1091d81d1SSam Leffler /* $OpenBSD: cryptosoft.c,v 1.35 2002/04/26 08:43:50 deraadt Exp $ */ 2091d81d1SSam Leffler 360727d8bSWarner Losh /*- 4091d81d1SSam Leffler * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu) 56810ad6fSSam Leffler * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting 6091d81d1SSam Leffler * 7091d81d1SSam Leffler * This code was written by Angelos D. Keromytis in Athens, Greece, in 8091d81d1SSam Leffler * February 2000. Network Security Technologies Inc. (NSTI) kindly 9091d81d1SSam Leffler * supported the development of this code. 10091d81d1SSam Leffler * 11091d81d1SSam Leffler * Copyright (c) 2000, 2001 Angelos D. Keromytis 1208fca7a5SJohn-Mark Gurney * Copyright (c) 2014 The FreeBSD Foundation 1308fca7a5SJohn-Mark Gurney * All rights reserved. 1408fca7a5SJohn-Mark Gurney * 1508fca7a5SJohn-Mark Gurney * Portions of this software were developed by John-Mark Gurney 1608fca7a5SJohn-Mark Gurney * under sponsorship of the FreeBSD Foundation and 1708fca7a5SJohn-Mark Gurney * Rubicon Communications, LLC (Netgate). 18091d81d1SSam Leffler * 19091d81d1SSam Leffler * Permission to use, copy, and modify this software with or without fee 20091d81d1SSam Leffler * is hereby granted, provided that this entire notice is included in 21091d81d1SSam Leffler * all source code copies of any software which is or includes a copy or 22091d81d1SSam Leffler * modification of this software. 23091d81d1SSam Leffler * 24091d81d1SSam Leffler * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR 25091d81d1SSam Leffler * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY 26091d81d1SSam Leffler * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE 27091d81d1SSam Leffler * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR 28091d81d1SSam Leffler * PURPOSE. 29091d81d1SSam Leffler */ 30091d81d1SSam Leffler 312c446514SDavid E. O'Brien #include <sys/cdefs.h> 322c446514SDavid E. O'Brien __FBSDID("$FreeBSD$"); 332c446514SDavid E. O'Brien 34091d81d1SSam Leffler #include <sys/param.h> 35091d81d1SSam Leffler #include <sys/systm.h> 36091d81d1SSam Leffler #include <sys/malloc.h> 37091d81d1SSam Leffler #include <sys/mbuf.h> 386810ad6fSSam Leffler #include <sys/module.h> 39091d81d1SSam Leffler #include <sys/sysctl.h> 40091d81d1SSam Leffler #include <sys/errno.h> 41091d81d1SSam Leffler #include <sys/random.h> 42091d81d1SSam Leffler #include <sys/kernel.h> 43091d81d1SSam Leffler #include <sys/uio.h> 44109919c6SBenno Rice #include <sys/lock.h> 45109919c6SBenno Rice #include <sys/rwlock.h> 4608fca7a5SJohn-Mark Gurney #include <sys/endian.h> 4708fca7a5SJohn-Mark Gurney #include <sys/limits.h> 48a7fcb1afSSean Eric Fagan #include <sys/mutex.h> 49091d81d1SSam Leffler 50091d81d1SSam Leffler #include <crypto/sha1.h> 51091d81d1SSam Leffler #include <opencrypto/rmd160.h> 52091d81d1SSam Leffler 53091d81d1SSam Leffler #include <opencrypto/cryptodev.h> 54091d81d1SSam Leffler #include <opencrypto/xform.h> 55091d81d1SSam Leffler 566810ad6fSSam Leffler #include <sys/kobj.h> 576810ad6fSSam Leffler #include <sys/bus.h> 586810ad6fSSam Leffler #include "cryptodev_if.h" 59091d81d1SSam Leffler 60c0341432SJohn Baldwin struct swcr_auth { 61c0341432SJohn Baldwin void *sw_ictx; 62c0341432SJohn Baldwin void *sw_octx; 63c0341432SJohn Baldwin struct auth_hash *sw_axf; 64c0341432SJohn Baldwin uint16_t sw_mlen; 65c0341432SJohn Baldwin }; 66c0341432SJohn Baldwin 67c0341432SJohn Baldwin struct swcr_encdec { 683e947048SJohn Baldwin void *sw_kschedule; 69c0341432SJohn Baldwin struct enc_xform *sw_exf; 70c0341432SJohn Baldwin }; 71c0341432SJohn Baldwin 72c0341432SJohn Baldwin struct swcr_compdec { 73c0341432SJohn Baldwin struct comp_algo *sw_cxf; 74c0341432SJohn Baldwin }; 75c0341432SJohn Baldwin 76c0341432SJohn Baldwin struct swcr_session { 77c0341432SJohn Baldwin struct mtx swcr_lock; 78c0341432SJohn Baldwin int (*swcr_process)(struct swcr_session *, struct cryptop *); 79c0341432SJohn Baldwin 80c0341432SJohn Baldwin struct swcr_auth swcr_auth; 81c0341432SJohn Baldwin struct swcr_encdec swcr_encdec; 82c0341432SJohn Baldwin struct swcr_compdec swcr_compdec; 83c0341432SJohn Baldwin }; 84507281e5SSean Eric Fagan 856810ad6fSSam Leffler static int32_t swcr_id; 866810ad6fSSam Leffler 871b0909d5SConrad Meyer static void swcr_freesession(device_t dev, crypto_session_t cses); 88091d81d1SSam Leffler 89c0341432SJohn Baldwin /* Used for CRYPTO_NULL_CBC. */ 90c0341432SJohn Baldwin static int 91c0341432SJohn Baldwin swcr_null(struct swcr_session *ses, struct cryptop *crp) 92c0341432SJohn Baldwin { 93c0341432SJohn Baldwin 94c0341432SJohn Baldwin return (0); 95c0341432SJohn Baldwin } 96c0341432SJohn Baldwin 97091d81d1SSam Leffler /* 98091d81d1SSam Leffler * Apply a symmetric encryption/decryption algorithm. 99091d81d1SSam Leffler */ 100091d81d1SSam Leffler static int 101c0341432SJohn Baldwin swcr_encdec(struct swcr_session *ses, struct cryptop *crp) 102091d81d1SSam Leffler { 1035d7ae54aSConrad Meyer unsigned char iv[EALG_MAX_BLOCK_LEN], blk[EALG_MAX_BLOCK_LEN]; 10408fca7a5SJohn-Mark Gurney unsigned char *ivp, *nivp, iv2[EALG_MAX_BLOCK_LEN]; 105c0341432SJohn Baldwin const struct crypto_session_params *csp; 106c0341432SJohn Baldwin struct swcr_encdec *sw; 107091d81d1SSam Leffler struct enc_xform *exf; 1089c0e3d3aSJohn Baldwin int i, blks, inlen, ivlen, outlen, resid; 1099c0e3d3aSJohn Baldwin struct crypto_buffer_cursor cc_in, cc_out; 11026d292d3SJohn Baldwin const unsigned char *inblk; 11126d292d3SJohn Baldwin unsigned char *outblk; 11208fca7a5SJohn-Mark Gurney int error; 113c0341432SJohn Baldwin bool encrypting; 11408fca7a5SJohn-Mark Gurney 11508fca7a5SJohn-Mark Gurney error = 0; 116091d81d1SSam Leffler 117c0341432SJohn Baldwin sw = &ses->swcr_encdec; 118091d81d1SSam Leffler exf = sw->sw_exf; 11908fca7a5SJohn-Mark Gurney ivlen = exf->ivsize; 120091d81d1SSam Leffler 121723d8764SJohn Baldwin if (exf->native_blocksize == 0) { 122091d81d1SSam Leffler /* Check for non-padded data */ 123723d8764SJohn Baldwin if ((crp->crp_payload_length % exf->blocksize) != 0) 124723d8764SJohn Baldwin return (EINVAL); 125723d8764SJohn Baldwin 126723d8764SJohn Baldwin blks = exf->blocksize; 127723d8764SJohn Baldwin } else 128723d8764SJohn Baldwin blks = exf->native_blocksize; 129091d81d1SSam Leffler 130c0341432SJohn Baldwin if (exf == &enc_xform_aes_icm && 131c0341432SJohn Baldwin (crp->crp_flags & CRYPTO_F_IV_SEPARATE) == 0) 13208fca7a5SJohn-Mark Gurney return (EINVAL); 13308fca7a5SJohn-Mark Gurney 134c0341432SJohn Baldwin if (crp->crp_cipher_key != NULL) { 135c0341432SJohn Baldwin csp = crypto_get_params(crp->crp_session); 1363e947048SJohn Baldwin error = exf->setkey(sw->sw_kschedule, 137c0341432SJohn Baldwin crp->crp_cipher_key, csp->csp_cipher_klen); 138c740ae4bSPoul-Henning Kamp if (error) 139c740ae4bSPoul-Henning Kamp return (error); 140c740ae4bSPoul-Henning Kamp } 141d295bdeeSPawel Jakub Dawidek 14220c128daSJohn Baldwin crypto_read_iv(crp, iv); 14320c128daSJohn Baldwin 14408fca7a5SJohn-Mark Gurney if (exf->reinit) { 145d295bdeeSPawel Jakub Dawidek /* 146d295bdeeSPawel Jakub Dawidek * xforms that provide a reinit method perform all IV 147d295bdeeSPawel Jakub Dawidek * handling themselves. 148d295bdeeSPawel Jakub Dawidek */ 149d295bdeeSPawel Jakub Dawidek exf->reinit(sw->sw_kschedule, iv); 150091d81d1SSam Leffler } 151091d81d1SSam Leffler 1529c0e3d3aSJohn Baldwin ivp = iv; 153091d81d1SSam Leffler 1549c0e3d3aSJohn Baldwin crypto_cursor_init(&cc_in, &crp->crp_buf); 1559c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc_in, crp->crp_payload_start); 1569c0e3d3aSJohn Baldwin inlen = crypto_cursor_seglen(&cc_in); 1579c0e3d3aSJohn Baldwin inblk = crypto_cursor_segbase(&cc_in); 1589c0e3d3aSJohn Baldwin if (CRYPTO_HAS_OUTPUT_BUFFER(crp)) { 1599c0e3d3aSJohn Baldwin crypto_cursor_init(&cc_out, &crp->crp_obuf); 1609c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc_out, crp->crp_payload_output_start); 1619c0e3d3aSJohn Baldwin } else 1629c0e3d3aSJohn Baldwin cc_out = cc_in; 1639c0e3d3aSJohn Baldwin outlen = crypto_cursor_seglen(&cc_out); 1649c0e3d3aSJohn Baldwin outblk = crypto_cursor_segbase(&cc_out); 1659c0e3d3aSJohn Baldwin 1669c0e3d3aSJohn Baldwin resid = crp->crp_payload_length; 167c0341432SJohn Baldwin encrypting = CRYPTO_OP_IS_ENCRYPT(crp->crp_op); 168091d81d1SSam Leffler 169091d81d1SSam Leffler /* 1709c0e3d3aSJohn Baldwin * Loop through encrypting blocks. 'inlen' is the remaining 1719c0e3d3aSJohn Baldwin * length of the current segment in the input buffer. 1729c0e3d3aSJohn Baldwin * 'outlen' is the remaining length of current segment in the 1739c0e3d3aSJohn Baldwin * output buffer. 174091d81d1SSam Leffler */ 1759c0e3d3aSJohn Baldwin while (resid >= blks) { 1769c0e3d3aSJohn Baldwin /* 1779c0e3d3aSJohn Baldwin * If the current block is not contained within the 1789c0e3d3aSJohn Baldwin * current input/output segment, use 'blk' as a local 1799c0e3d3aSJohn Baldwin * buffer. 1809c0e3d3aSJohn Baldwin */ 1819c0e3d3aSJohn Baldwin if (inlen < blks) { 1829c0e3d3aSJohn Baldwin crypto_cursor_copydata(&cc_in, blks, blk); 1839c0e3d3aSJohn Baldwin inblk = blk; 184d295bdeeSPawel Jakub Dawidek } 1859c0e3d3aSJohn Baldwin if (outlen < blks) 1869c0e3d3aSJohn Baldwin outblk = blk; 1879c0e3d3aSJohn Baldwin 1889c0e3d3aSJohn Baldwin /* 1899c0e3d3aSJohn Baldwin * Ciphers without a 'reinit' hook are assumed to be 1909c0e3d3aSJohn Baldwin * used in CBC mode where the chaining is done here. 1919c0e3d3aSJohn Baldwin */ 1929c0e3d3aSJohn Baldwin if (exf->reinit != NULL) { 1939c0e3d3aSJohn Baldwin if (encrypting) 1949c0e3d3aSJohn Baldwin exf->encrypt(sw->sw_kschedule, inblk, outblk); 1959c0e3d3aSJohn Baldwin else 1969c0e3d3aSJohn Baldwin exf->decrypt(sw->sw_kschedule, inblk, outblk); 197c0341432SJohn Baldwin } else if (encrypting) { 198091d81d1SSam Leffler /* XOR with previous block */ 1999c0e3d3aSJohn Baldwin for (i = 0; i < blks; i++) 2009c0e3d3aSJohn Baldwin outblk[i] = inblk[i] ^ ivp[i]; 201091d81d1SSam Leffler 2029c0e3d3aSJohn Baldwin exf->encrypt(sw->sw_kschedule, outblk, outblk); 203091d81d1SSam Leffler 204091d81d1SSam Leffler /* 205091d81d1SSam Leffler * Keep encrypted block for XOR'ing 206091d81d1SSam Leffler * with next block 207091d81d1SSam Leffler */ 2089c0e3d3aSJohn Baldwin memcpy(iv, outblk, blks); 209091d81d1SSam Leffler ivp = iv; 210091d81d1SSam Leffler } else { /* decrypt */ 211091d81d1SSam Leffler /* 212091d81d1SSam Leffler * Keep encrypted block for XOR'ing 213091d81d1SSam Leffler * with next block 214091d81d1SSam Leffler */ 21508fca7a5SJohn-Mark Gurney nivp = (ivp == iv) ? iv2 : iv; 2169c0e3d3aSJohn Baldwin memcpy(nivp, inblk, blks); 217091d81d1SSam Leffler 2189c0e3d3aSJohn Baldwin exf->decrypt(sw->sw_kschedule, inblk, outblk); 219091d81d1SSam Leffler 220091d81d1SSam Leffler /* XOR with previous block */ 2219c0e3d3aSJohn Baldwin for (i = 0; i < blks; i++) 2229c0e3d3aSJohn Baldwin outblk[i] ^= ivp[i]; 223091d81d1SSam Leffler 22408fca7a5SJohn-Mark Gurney ivp = nivp; 225091d81d1SSam Leffler } 226091d81d1SSam Leffler 2279c0e3d3aSJohn Baldwin if (inlen < blks) { 2289c0e3d3aSJohn Baldwin inlen = crypto_cursor_seglen(&cc_in); 2299c0e3d3aSJohn Baldwin inblk = crypto_cursor_segbase(&cc_in); 2309c0e3d3aSJohn Baldwin } else { 2319c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc_in, blks); 2329c0e3d3aSJohn Baldwin inlen -= blks; 2339c0e3d3aSJohn Baldwin inblk += blks; 23408fca7a5SJohn-Mark Gurney } 235091d81d1SSam Leffler 2369c0e3d3aSJohn Baldwin if (outlen < blks) { 2379c0e3d3aSJohn Baldwin crypto_cursor_copyback(&cc_out, blks, blk); 2389c0e3d3aSJohn Baldwin outlen = crypto_cursor_seglen(&cc_out); 2399c0e3d3aSJohn Baldwin outblk = crypto_cursor_segbase(&cc_out); 2409c0e3d3aSJohn Baldwin } else { 2419c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc_out, blks); 2429c0e3d3aSJohn Baldwin outlen -= blks; 2439c0e3d3aSJohn Baldwin outblk += blks; 244091d81d1SSam Leffler } 245091d81d1SSam Leffler 2469c0e3d3aSJohn Baldwin resid -= blks; 247f34a967bSPawel Jakub Dawidek } 248f34a967bSPawel Jakub Dawidek 249723d8764SJohn Baldwin /* Handle trailing partial block for stream ciphers. */ 2509c0e3d3aSJohn Baldwin if (resid > 0) { 251723d8764SJohn Baldwin KASSERT(exf->native_blocksize != 0, 252723d8764SJohn Baldwin ("%s: partial block of %d bytes for cipher %s", 253723d8764SJohn Baldwin __func__, i, exf->name)); 254723d8764SJohn Baldwin KASSERT(exf->reinit != NULL, 255723d8764SJohn Baldwin ("%s: partial block cipher %s without reinit hook", 256723d8764SJohn Baldwin __func__, exf->name)); 2579c0e3d3aSJohn Baldwin KASSERT(resid < blks, ("%s: partial block too big", __func__)); 258723d8764SJohn Baldwin 2599c0e3d3aSJohn Baldwin inlen = crypto_cursor_seglen(&cc_in); 2609c0e3d3aSJohn Baldwin outlen = crypto_cursor_seglen(&cc_out); 2619c0e3d3aSJohn Baldwin if (inlen < resid) { 2629c0e3d3aSJohn Baldwin crypto_cursor_copydata(&cc_in, resid, blk); 2639c0e3d3aSJohn Baldwin inblk = blk; 2649c0e3d3aSJohn Baldwin } else 2659c0e3d3aSJohn Baldwin inblk = crypto_cursor_segbase(&cc_in); 2669c0e3d3aSJohn Baldwin if (outlen < resid) 2679c0e3d3aSJohn Baldwin outblk = blk; 2689c0e3d3aSJohn Baldwin else 2699c0e3d3aSJohn Baldwin outblk = crypto_cursor_segbase(&cc_out); 2709c0e3d3aSJohn Baldwin if (encrypting) 2719c0e3d3aSJohn Baldwin exf->encrypt_last(sw->sw_kschedule, inblk, outblk, 2729c0e3d3aSJohn Baldwin resid); 2739c0e3d3aSJohn Baldwin else 2749c0e3d3aSJohn Baldwin exf->decrypt_last(sw->sw_kschedule, inblk, outblk, 2759c0e3d3aSJohn Baldwin resid); 2769c0e3d3aSJohn Baldwin if (outlen < resid) 2779c0e3d3aSJohn Baldwin crypto_cursor_copyback(&cc_out, resid, blk); 278723d8764SJohn Baldwin } 279723d8764SJohn Baldwin 28020c128daSJohn Baldwin explicit_bzero(blk, sizeof(blk)); 28120c128daSJohn Baldwin explicit_bzero(iv, sizeof(iv)); 28220c128daSJohn Baldwin explicit_bzero(iv2, sizeof(iv2)); 2839c0e3d3aSJohn Baldwin return (0); 284091d81d1SSam Leffler } 285091d81d1SSam Leffler 286c0341432SJohn Baldwin static void 287c0341432SJohn Baldwin swcr_authprepare(struct auth_hash *axf, struct swcr_auth *sw, 288c0341432SJohn Baldwin const uint8_t *key, int klen) 289f6c4bc3bSPawel Jakub Dawidek { 290f6c4bc3bSPawel Jakub Dawidek 291f6c4bc3bSPawel Jakub Dawidek switch (axf->type) { 292f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA1_HMAC: 293c97f39ceSConrad Meyer case CRYPTO_SHA2_224_HMAC: 294f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_256_HMAC: 295f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_384_HMAC: 296f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_512_HMAC: 297f6c4bc3bSPawel Jakub Dawidek case CRYPTO_NULL_HMAC: 298f6c4bc3bSPawel Jakub Dawidek case CRYPTO_RIPEMD160_HMAC: 299c0341432SJohn Baldwin hmac_init_ipad(axf, key, klen, sw->sw_ictx); 300c0341432SJohn Baldwin hmac_init_opad(axf, key, klen, sw->sw_octx); 301f6c4bc3bSPawel Jakub Dawidek break; 30225b7033bSConrad Meyer case CRYPTO_POLY1305: 3030e33efe4SConrad Meyer case CRYPTO_BLAKE2B: 3040e33efe4SConrad Meyer case CRYPTO_BLAKE2S: 3050e33efe4SConrad Meyer axf->Setkey(sw->sw_ictx, key, klen); 3060e33efe4SConrad Meyer axf->Init(sw->sw_ictx); 3070e33efe4SConrad Meyer break; 308f6c4bc3bSPawel Jakub Dawidek default: 309c0341432SJohn Baldwin panic("%s: algorithm %d doesn't use keys", __func__, axf->type); 310f6c4bc3bSPawel Jakub Dawidek } 311f6c4bc3bSPawel Jakub Dawidek } 312f6c4bc3bSPawel Jakub Dawidek 313091d81d1SSam Leffler /* 314c0341432SJohn Baldwin * Compute or verify hash. 315091d81d1SSam Leffler */ 316091d81d1SSam Leffler static int 317c0341432SJohn Baldwin swcr_authcompute(struct swcr_session *ses, struct cryptop *crp) 318091d81d1SSam Leffler { 319c0341432SJohn Baldwin u_char aalg[HASH_MAX_LEN]; 320c0341432SJohn Baldwin const struct crypto_session_params *csp; 321c0341432SJohn Baldwin struct swcr_auth *sw; 322091d81d1SSam Leffler struct auth_hash *axf; 323091d81d1SSam Leffler union authctx ctx; 324091d81d1SSam Leffler int err; 325091d81d1SSam Leffler 326c0341432SJohn Baldwin sw = &ses->swcr_auth; 327091d81d1SSam Leffler 328091d81d1SSam Leffler axf = sw->sw_axf; 329091d81d1SSam Leffler 330c0341432SJohn Baldwin if (crp->crp_auth_key != NULL) { 331c0341432SJohn Baldwin csp = crypto_get_params(crp->crp_session); 332c0341432SJohn Baldwin swcr_authprepare(axf, sw, crp->crp_auth_key, 333c0341432SJohn Baldwin csp->csp_auth_klen); 33425b7033bSConrad Meyer } 335f6c4bc3bSPawel Jakub Dawidek 336091d81d1SSam Leffler bcopy(sw->sw_ictx, &ctx, axf->ctxsize); 337091d81d1SSam Leffler 338c0341432SJohn Baldwin err = crypto_apply(crp, crp->crp_aad_start, crp->crp_aad_length, 3399b6b2f86SJohn Baldwin axf->Update, &ctx); 340091d81d1SSam Leffler if (err) 341091d81d1SSam Leffler return err; 342091d81d1SSam Leffler 3439c0e3d3aSJohn Baldwin if (CRYPTO_HAS_OUTPUT_BUFFER(crp) && 3449c0e3d3aSJohn Baldwin CRYPTO_OP_IS_ENCRYPT(crp->crp_op)) 3459c0e3d3aSJohn Baldwin err = crypto_apply_buf(&crp->crp_obuf, 3469c0e3d3aSJohn Baldwin crp->crp_payload_output_start, crp->crp_payload_length, 3479b6b2f86SJohn Baldwin axf->Update, &ctx); 3489c0e3d3aSJohn Baldwin else 3499c0e3d3aSJohn Baldwin err = crypto_apply(crp, crp->crp_payload_start, 3509b6b2f86SJohn Baldwin crp->crp_payload_length, axf->Update, &ctx); 351c0341432SJohn Baldwin if (err) 352c0341432SJohn Baldwin return err; 353c0341432SJohn Baldwin 354c0341432SJohn Baldwin switch (axf->type) { 355c4729f6eSConrad Meyer case CRYPTO_SHA1: 356c4729f6eSConrad Meyer case CRYPTO_SHA2_224: 357c4729f6eSConrad Meyer case CRYPTO_SHA2_256: 358c4729f6eSConrad Meyer case CRYPTO_SHA2_384: 359c4729f6eSConrad Meyer case CRYPTO_SHA2_512: 360c4729f6eSConrad Meyer axf->Final(aalg, &ctx); 361c4729f6eSConrad Meyer break; 362c4729f6eSConrad Meyer 363091d81d1SSam Leffler case CRYPTO_SHA1_HMAC: 364c97f39ceSConrad Meyer case CRYPTO_SHA2_224_HMAC: 365f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_256_HMAC: 366f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_384_HMAC: 367f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_512_HMAC: 368091d81d1SSam Leffler case CRYPTO_RIPEMD160_HMAC: 369091d81d1SSam Leffler if (sw->sw_octx == NULL) 370091d81d1SSam Leffler return EINVAL; 371091d81d1SSam Leffler 372091d81d1SSam Leffler axf->Final(aalg, &ctx); 373091d81d1SSam Leffler bcopy(sw->sw_octx, &ctx, axf->ctxsize); 374091d81d1SSam Leffler axf->Update(&ctx, aalg, axf->hashsize); 375091d81d1SSam Leffler axf->Final(aalg, &ctx); 376091d81d1SSam Leffler break; 377091d81d1SSam Leffler 3780e33efe4SConrad Meyer case CRYPTO_BLAKE2B: 3790e33efe4SConrad Meyer case CRYPTO_BLAKE2S: 380091d81d1SSam Leffler case CRYPTO_NULL_HMAC: 38125b7033bSConrad Meyer case CRYPTO_POLY1305: 382091d81d1SSam Leffler axf->Final(aalg, &ctx); 383091d81d1SSam Leffler break; 384091d81d1SSam Leffler } 385091d81d1SSam Leffler 386c0341432SJohn Baldwin if (crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) { 38720c128daSJohn Baldwin u_char uaalg[HASH_MAX_LEN]; 38820c128daSJohn Baldwin 389c0341432SJohn Baldwin crypto_copydata(crp, crp->crp_digest_start, sw->sw_mlen, uaalg); 390c0341432SJohn Baldwin if (timingsafe_bcmp(aalg, uaalg, sw->sw_mlen) != 0) 39120c128daSJohn Baldwin err = EBADMSG; 39220c128daSJohn Baldwin explicit_bzero(uaalg, sizeof(uaalg)); 393c0341432SJohn Baldwin } else { 394091d81d1SSam Leffler /* Inject the authentication data */ 395c0341432SJohn Baldwin crypto_copyback(crp, crp->crp_digest_start, sw->sw_mlen, aalg); 396c0341432SJohn Baldwin } 39720c128daSJohn Baldwin explicit_bzero(aalg, sizeof(aalg)); 39820c128daSJohn Baldwin return (err); 399091d81d1SSam Leffler } 400091d81d1SSam Leffler 40108fca7a5SJohn-Mark Gurney CTASSERT(INT_MAX <= (1ll<<39) - 256); /* GCM: plain text < 2^39-256 */ 40208fca7a5SJohn-Mark Gurney CTASSERT(INT_MAX <= (uint64_t)-1); /* GCM: associated data <= 2^64-1 */ 40308fca7a5SJohn-Mark Gurney 40408fca7a5SJohn-Mark Gurney static int 405c0341432SJohn Baldwin swcr_gmac(struct swcr_session *ses, struct cryptop *crp) 40608fca7a5SJohn-Mark Gurney { 40726d292d3SJohn Baldwin uint32_t blkbuf[howmany(AES_BLOCK_LEN, sizeof(uint32_t))]; 40808fca7a5SJohn-Mark Gurney u_char *blk = (u_char *)blkbuf; 40926d292d3SJohn Baldwin u_char tag[GMAC_DIGEST_LEN]; 41026d292d3SJohn Baldwin u_char iv[AES_BLOCK_LEN]; 4119c0e3d3aSJohn Baldwin struct crypto_buffer_cursor cc; 41226d292d3SJohn Baldwin const u_char *inblk; 41308fca7a5SJohn-Mark Gurney union authctx ctx; 414c0341432SJohn Baldwin struct swcr_auth *swa; 415c0341432SJohn Baldwin struct auth_hash *axf; 41608fca7a5SJohn-Mark Gurney uint32_t *blkp; 41720c128daSJohn Baldwin int blksz, error, ivlen, len, resid; 41808fca7a5SJohn-Mark Gurney 419c0341432SJohn Baldwin swa = &ses->swcr_auth; 42008fca7a5SJohn-Mark Gurney axf = swa->sw_axf; 421c0341432SJohn Baldwin 42208fca7a5SJohn-Mark Gurney bcopy(swa->sw_ictx, &ctx, axf->ctxsize); 42326d292d3SJohn Baldwin blksz = GMAC_BLOCK_LEN; 42426d292d3SJohn Baldwin KASSERT(axf->blocksize == blksz, ("%s: axf block size mismatch", 42526d292d3SJohn Baldwin __func__)); 42608fca7a5SJohn-Mark Gurney 42708fca7a5SJohn-Mark Gurney /* Initialize the IV */ 428c0341432SJohn Baldwin ivlen = AES_GCM_IV_LEN; 42929fe41ddSJohn Baldwin crypto_read_iv(crp, iv); 43008fca7a5SJohn-Mark Gurney 43108fca7a5SJohn-Mark Gurney axf->Reinit(&ctx, iv, ivlen); 4329c0e3d3aSJohn Baldwin crypto_cursor_init(&cc, &crp->crp_buf); 4339c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc, crp->crp_payload_start); 43426d292d3SJohn Baldwin for (resid = crp->crp_payload_length; resid >= blksz; resid -= len) { 43526d292d3SJohn Baldwin len = crypto_cursor_seglen(&cc); 43626d292d3SJohn Baldwin if (len >= blksz) { 43726d292d3SJohn Baldwin inblk = crypto_cursor_segbase(&cc); 43826d292d3SJohn Baldwin len = rounddown(MIN(len, resid), blksz); 43926d292d3SJohn Baldwin crypto_cursor_advance(&cc, len); 44026d292d3SJohn Baldwin } else { 44126d292d3SJohn Baldwin len = blksz; 4429c0e3d3aSJohn Baldwin crypto_cursor_copydata(&cc, len, blk); 44326d292d3SJohn Baldwin inblk = blk; 44426d292d3SJohn Baldwin } 44526d292d3SJohn Baldwin axf->Update(&ctx, inblk, len); 44626d292d3SJohn Baldwin } 44726d292d3SJohn Baldwin if (resid > 0) { 44826d292d3SJohn Baldwin memset(blk, 0, blksz); 44926d292d3SJohn Baldwin crypto_cursor_copydata(&cc, resid, blk); 45008fca7a5SJohn-Mark Gurney axf->Update(&ctx, blk, blksz); 45108fca7a5SJohn-Mark Gurney } 45208fca7a5SJohn-Mark Gurney 45308fca7a5SJohn-Mark Gurney /* length block */ 45426d292d3SJohn Baldwin memset(blk, 0, blksz); 45508fca7a5SJohn-Mark Gurney blkp = (uint32_t *)blk + 1; 456c0341432SJohn Baldwin *blkp = htobe32(crp->crp_payload_length * 8); 45708fca7a5SJohn-Mark Gurney axf->Update(&ctx, blk, blksz); 458c0341432SJohn Baldwin 459c0341432SJohn Baldwin /* Finalize MAC */ 46026d292d3SJohn Baldwin axf->Final(tag, &ctx); 461c0341432SJohn Baldwin 46220c128daSJohn Baldwin error = 0; 463c0341432SJohn Baldwin if (crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) { 46426d292d3SJohn Baldwin u_char tag2[GMAC_DIGEST_LEN]; 46520c128daSJohn Baldwin 466c0341432SJohn Baldwin crypto_copydata(crp, crp->crp_digest_start, swa->sw_mlen, 46726d292d3SJohn Baldwin tag2); 46826d292d3SJohn Baldwin if (timingsafe_bcmp(tag, tag2, swa->sw_mlen) != 0) 46920c128daSJohn Baldwin error = EBADMSG; 47026d292d3SJohn Baldwin explicit_bzero(tag2, sizeof(tag2)); 471c0341432SJohn Baldwin } else { 472c0341432SJohn Baldwin /* Inject the authentication data */ 47326d292d3SJohn Baldwin crypto_copyback(crp, crp->crp_digest_start, swa->sw_mlen, tag); 474c0341432SJohn Baldwin } 47520c128daSJohn Baldwin explicit_bzero(blkbuf, sizeof(blkbuf)); 47626d292d3SJohn Baldwin explicit_bzero(tag, sizeof(tag)); 47720c128daSJohn Baldwin explicit_bzero(iv, sizeof(iv)); 47820c128daSJohn Baldwin return (error); 479c0341432SJohn Baldwin } 480c0341432SJohn Baldwin 481c0341432SJohn Baldwin static int 482c0341432SJohn Baldwin swcr_gcm(struct swcr_session *ses, struct cryptop *crp) 483c0341432SJohn Baldwin { 48426d292d3SJohn Baldwin uint32_t blkbuf[howmany(AES_BLOCK_LEN, sizeof(uint32_t))]; 485c0341432SJohn Baldwin u_char *blk = (u_char *)blkbuf; 48626d292d3SJohn Baldwin u_char tag[GMAC_DIGEST_LEN]; 48726d292d3SJohn Baldwin u_char iv[AES_BLOCK_LEN]; 4889c0e3d3aSJohn Baldwin struct crypto_buffer_cursor cc_in, cc_out; 48926d292d3SJohn Baldwin const u_char *inblk; 49026d292d3SJohn Baldwin u_char *outblk; 491c0341432SJohn Baldwin union authctx ctx; 492c0341432SJohn Baldwin struct swcr_auth *swa; 493c0341432SJohn Baldwin struct swcr_encdec *swe; 494c0341432SJohn Baldwin struct auth_hash *axf; 495c0341432SJohn Baldwin struct enc_xform *exf; 496c0341432SJohn Baldwin uint32_t *blkp; 49720c128daSJohn Baldwin int blksz, error, ivlen, len, r, resid; 498c0341432SJohn Baldwin 499c0341432SJohn Baldwin swa = &ses->swcr_auth; 500c0341432SJohn Baldwin axf = swa->sw_axf; 501c0341432SJohn Baldwin 502c0341432SJohn Baldwin bcopy(swa->sw_ictx, &ctx, axf->ctxsize); 50326d292d3SJohn Baldwin blksz = GMAC_BLOCK_LEN; 50426d292d3SJohn Baldwin KASSERT(axf->blocksize == blksz, ("%s: axf block size mismatch", 50526d292d3SJohn Baldwin __func__)); 506c0341432SJohn Baldwin 507c0341432SJohn Baldwin swe = &ses->swcr_encdec; 508c0341432SJohn Baldwin exf = swe->sw_exf; 509723d8764SJohn Baldwin KASSERT(axf->blocksize == exf->native_blocksize, 510723d8764SJohn Baldwin ("%s: blocksize mismatch", __func__)); 511c0341432SJohn Baldwin 512c0341432SJohn Baldwin if ((crp->crp_flags & CRYPTO_F_IV_SEPARATE) == 0) 513c0341432SJohn Baldwin return (EINVAL); 514c0341432SJohn Baldwin 515c0341432SJohn Baldwin /* Initialize the IV */ 516c0341432SJohn Baldwin ivlen = AES_GCM_IV_LEN; 517c0341432SJohn Baldwin bcopy(crp->crp_iv, iv, ivlen); 518c0341432SJohn Baldwin 519c0341432SJohn Baldwin /* Supply MAC with IV */ 520c0341432SJohn Baldwin axf->Reinit(&ctx, iv, ivlen); 521c0341432SJohn Baldwin 522c0341432SJohn Baldwin /* Supply MAC with AAD */ 5239c0e3d3aSJohn Baldwin crypto_cursor_init(&cc_in, &crp->crp_buf); 5249c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc_in, crp->crp_aad_start); 52526d292d3SJohn Baldwin for (resid = crp->crp_aad_length; resid >= blksz; resid -= len) { 52626d292d3SJohn Baldwin len = crypto_cursor_seglen(&cc_in); 52726d292d3SJohn Baldwin if (len >= blksz) { 52826d292d3SJohn Baldwin inblk = crypto_cursor_segbase(&cc_in); 52926d292d3SJohn Baldwin len = rounddown(MIN(len, resid), blksz); 53026d292d3SJohn Baldwin crypto_cursor_advance(&cc_in, len); 53126d292d3SJohn Baldwin } else { 53226d292d3SJohn Baldwin len = blksz; 5339c0e3d3aSJohn Baldwin crypto_cursor_copydata(&cc_in, len, blk); 53426d292d3SJohn Baldwin inblk = blk; 53526d292d3SJohn Baldwin } 53626d292d3SJohn Baldwin axf->Update(&ctx, inblk, len); 53726d292d3SJohn Baldwin } 53826d292d3SJohn Baldwin if (resid > 0) { 53926d292d3SJohn Baldwin memset(blk, 0, blksz); 54026d292d3SJohn Baldwin crypto_cursor_copydata(&cc_in, resid, blk); 541c0341432SJohn Baldwin axf->Update(&ctx, blk, blksz); 542c0341432SJohn Baldwin } 543c0341432SJohn Baldwin 544c0341432SJohn Baldwin exf->reinit(swe->sw_kschedule, iv); 545c0341432SJohn Baldwin 546c0341432SJohn Baldwin /* Do encryption with MAC */ 5479c0e3d3aSJohn Baldwin crypto_cursor_init(&cc_in, &crp->crp_buf); 5489c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc_in, crp->crp_payload_start); 5499c0e3d3aSJohn Baldwin if (CRYPTO_HAS_OUTPUT_BUFFER(crp)) { 5509c0e3d3aSJohn Baldwin crypto_cursor_init(&cc_out, &crp->crp_obuf); 5519c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc_out, crp->crp_payload_output_start); 5529c0e3d3aSJohn Baldwin } else 5539c0e3d3aSJohn Baldwin cc_out = cc_in; 55426d292d3SJohn Baldwin for (resid = crp->crp_payload_length; resid >= blksz; resid -= blksz) { 55526d292d3SJohn Baldwin if (crypto_cursor_seglen(&cc_in) < blksz) { 55626d292d3SJohn Baldwin crypto_cursor_copydata(&cc_in, blksz, blk); 55726d292d3SJohn Baldwin inblk = blk; 558c0341432SJohn Baldwin } else { 55926d292d3SJohn Baldwin inblk = crypto_cursor_segbase(&cc_in); 56026d292d3SJohn Baldwin crypto_cursor_advance(&cc_in, blksz); 561c0341432SJohn Baldwin } 56226d292d3SJohn Baldwin if (CRYPTO_OP_IS_ENCRYPT(crp->crp_op)) { 56326d292d3SJohn Baldwin if (crypto_cursor_seglen(&cc_out) < blksz) 56426d292d3SJohn Baldwin outblk = blk; 56526d292d3SJohn Baldwin else 56626d292d3SJohn Baldwin outblk = crypto_cursor_segbase(&cc_out); 56726d292d3SJohn Baldwin exf->encrypt(swe->sw_kschedule, inblk, outblk); 56826d292d3SJohn Baldwin axf->Update(&ctx, outblk, blksz); 56926d292d3SJohn Baldwin if (outblk == blk) 57026d292d3SJohn Baldwin crypto_cursor_copyback(&cc_out, blksz, blk); 57126d292d3SJohn Baldwin else 57226d292d3SJohn Baldwin crypto_cursor_advance(&cc_out, blksz); 57326d292d3SJohn Baldwin } else { 57426d292d3SJohn Baldwin axf->Update(&ctx, inblk, blksz); 57526d292d3SJohn Baldwin } 57626d292d3SJohn Baldwin } 57726d292d3SJohn Baldwin if (resid > 0) { 57826d292d3SJohn Baldwin crypto_cursor_copydata(&cc_in, resid, blk); 57926d292d3SJohn Baldwin if (CRYPTO_OP_IS_ENCRYPT(crp->crp_op)) { 58026d292d3SJohn Baldwin exf->encrypt_last(swe->sw_kschedule, blk, blk, resid); 58126d292d3SJohn Baldwin crypto_cursor_copyback(&cc_out, resid, blk); 58226d292d3SJohn Baldwin } 58326d292d3SJohn Baldwin axf->Update(&ctx, blk, resid); 584c0341432SJohn Baldwin } 585c0341432SJohn Baldwin 586c0341432SJohn Baldwin /* length block */ 58726d292d3SJohn Baldwin memset(blk, 0, blksz); 588c0341432SJohn Baldwin blkp = (uint32_t *)blk + 1; 589c0341432SJohn Baldwin *blkp = htobe32(crp->crp_aad_length * 8); 590c0341432SJohn Baldwin blkp = (uint32_t *)blk + 3; 591c0341432SJohn Baldwin *blkp = htobe32(crp->crp_payload_length * 8); 592c0341432SJohn Baldwin axf->Update(&ctx, blk, blksz); 593c0341432SJohn Baldwin 594c0341432SJohn Baldwin /* Finalize MAC */ 59526d292d3SJohn Baldwin axf->Final(tag, &ctx); 596c0341432SJohn Baldwin 597c0341432SJohn Baldwin /* Validate tag */ 59820c128daSJohn Baldwin error = 0; 599c0341432SJohn Baldwin if (!CRYPTO_OP_IS_ENCRYPT(crp->crp_op)) { 60026d292d3SJohn Baldwin u_char tag2[GMAC_DIGEST_LEN]; 60120c128daSJohn Baldwin 60226d292d3SJohn Baldwin crypto_copydata(crp, crp->crp_digest_start, swa->sw_mlen, tag2); 603c0341432SJohn Baldwin 60426d292d3SJohn Baldwin r = timingsafe_bcmp(tag, tag2, swa->sw_mlen); 60526d292d3SJohn Baldwin explicit_bzero(tag2, sizeof(tag2)); 60620c128daSJohn Baldwin if (r != 0) { 60720c128daSJohn Baldwin error = EBADMSG; 60820c128daSJohn Baldwin goto out; 60920c128daSJohn Baldwin } 610c0341432SJohn Baldwin 611c0341432SJohn Baldwin /* tag matches, decrypt data */ 6129c0e3d3aSJohn Baldwin crypto_cursor_init(&cc_in, &crp->crp_buf); 6139c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc_in, crp->crp_payload_start); 61426d292d3SJohn Baldwin for (resid = crp->crp_payload_length; resid > blksz; 61526d292d3SJohn Baldwin resid -= blksz) { 61626d292d3SJohn Baldwin if (crypto_cursor_seglen(&cc_in) < blksz) { 61726d292d3SJohn Baldwin crypto_cursor_copydata(&cc_in, blksz, blk); 61826d292d3SJohn Baldwin inblk = blk; 61926d292d3SJohn Baldwin } else { 62026d292d3SJohn Baldwin inblk = crypto_cursor_segbase(&cc_in); 62126d292d3SJohn Baldwin crypto_cursor_advance(&cc_in, blksz); 62226d292d3SJohn Baldwin } 62326d292d3SJohn Baldwin if (crypto_cursor_seglen(&cc_out) < blksz) 62426d292d3SJohn Baldwin outblk = blk; 62526d292d3SJohn Baldwin else 62626d292d3SJohn Baldwin outblk = crypto_cursor_segbase(&cc_out); 62726d292d3SJohn Baldwin exf->decrypt(swe->sw_kschedule, inblk, outblk); 62826d292d3SJohn Baldwin if (outblk == blk) 62926d292d3SJohn Baldwin crypto_cursor_copyback(&cc_out, blksz, blk); 63026d292d3SJohn Baldwin else 63126d292d3SJohn Baldwin crypto_cursor_advance(&cc_out, blksz); 63226d292d3SJohn Baldwin } 63326d292d3SJohn Baldwin if (resid > 0) { 63426d292d3SJohn Baldwin crypto_cursor_copydata(&cc_in, resid, blk); 63526d292d3SJohn Baldwin exf->decrypt_last(swe->sw_kschedule, blk, blk, resid); 63626d292d3SJohn Baldwin crypto_cursor_copyback(&cc_out, resid, blk); 637c0341432SJohn Baldwin } 638c0341432SJohn Baldwin } else { 639c0341432SJohn Baldwin /* Inject the authentication data */ 64026d292d3SJohn Baldwin crypto_copyback(crp, crp->crp_digest_start, swa->sw_mlen, tag); 641c0341432SJohn Baldwin } 642c0341432SJohn Baldwin 64320c128daSJohn Baldwin out: 64420c128daSJohn Baldwin explicit_bzero(blkbuf, sizeof(blkbuf)); 64526d292d3SJohn Baldwin explicit_bzero(tag, sizeof(tag)); 64620c128daSJohn Baldwin explicit_bzero(iv, sizeof(iv)); 64720c128daSJohn Baldwin 64820c128daSJohn Baldwin return (error); 649c0341432SJohn Baldwin } 650c0341432SJohn Baldwin 651c0341432SJohn Baldwin static int 652c0341432SJohn Baldwin swcr_ccm_cbc_mac(struct swcr_session *ses, struct cryptop *crp) 653c0341432SJohn Baldwin { 65426d292d3SJohn Baldwin u_char tag[AES_CBC_MAC_HASH_LEN]; 65526d292d3SJohn Baldwin u_char iv[AES_BLOCK_LEN]; 656c0341432SJohn Baldwin union authctx ctx; 657c0341432SJohn Baldwin struct swcr_auth *swa; 658c0341432SJohn Baldwin struct auth_hash *axf; 65926d292d3SJohn Baldwin int error, ivlen; 660c0341432SJohn Baldwin 661c0341432SJohn Baldwin swa = &ses->swcr_auth; 662c0341432SJohn Baldwin axf = swa->sw_axf; 663c0341432SJohn Baldwin 664c0341432SJohn Baldwin bcopy(swa->sw_ictx, &ctx, axf->ctxsize); 665c0341432SJohn Baldwin 666c0341432SJohn Baldwin /* Initialize the IV */ 667c0341432SJohn Baldwin ivlen = AES_CCM_IV_LEN; 66829fe41ddSJohn Baldwin crypto_read_iv(crp, iv); 669c0341432SJohn Baldwin 670c0341432SJohn Baldwin /* 671c0341432SJohn Baldwin * AES CCM-CBC-MAC needs to know the length of both the auth 672c0341432SJohn Baldwin * data and payload data before doing the auth computation. 673c0341432SJohn Baldwin */ 674c0341432SJohn Baldwin ctx.aes_cbc_mac_ctx.authDataLength = crp->crp_payload_length; 675c0341432SJohn Baldwin ctx.aes_cbc_mac_ctx.cryptDataLength = 0; 676c0341432SJohn Baldwin 677c0341432SJohn Baldwin axf->Reinit(&ctx, iv, ivlen); 67826d292d3SJohn Baldwin error = crypto_apply(crp, crp->crp_payload_start, 67926d292d3SJohn Baldwin crp->crp_payload_length, axf->Update, &ctx); 68026d292d3SJohn Baldwin if (error) 68126d292d3SJohn Baldwin return (error); 682c0341432SJohn Baldwin 683c0341432SJohn Baldwin /* Finalize MAC */ 68426d292d3SJohn Baldwin axf->Final(tag, &ctx); 685c0341432SJohn Baldwin 686c0341432SJohn Baldwin if (crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) { 68726d292d3SJohn Baldwin u_char tag2[AES_CBC_MAC_HASH_LEN]; 68820c128daSJohn Baldwin 689c0341432SJohn Baldwin crypto_copydata(crp, crp->crp_digest_start, swa->sw_mlen, 69026d292d3SJohn Baldwin tag2); 69126d292d3SJohn Baldwin if (timingsafe_bcmp(tag, tag2, swa->sw_mlen) != 0) 69220c128daSJohn Baldwin error = EBADMSG; 69326d292d3SJohn Baldwin explicit_bzero(tag2, sizeof(tag)); 694c0341432SJohn Baldwin } else { 695c0341432SJohn Baldwin /* Inject the authentication data */ 69626d292d3SJohn Baldwin crypto_copyback(crp, crp->crp_digest_start, swa->sw_mlen, tag); 697c0341432SJohn Baldwin } 69826d292d3SJohn Baldwin explicit_bzero(tag, sizeof(tag)); 69920c128daSJohn Baldwin explicit_bzero(iv, sizeof(iv)); 70020c128daSJohn Baldwin return (error); 701c0341432SJohn Baldwin } 702c0341432SJohn Baldwin 703c0341432SJohn Baldwin static int 704c0341432SJohn Baldwin swcr_ccm(struct swcr_session *ses, struct cryptop *crp) 705c0341432SJohn Baldwin { 70626d292d3SJohn Baldwin uint32_t blkbuf[howmany(AES_BLOCK_LEN, sizeof(uint32_t))]; 707c0341432SJohn Baldwin u_char *blk = (u_char *)blkbuf; 70826d292d3SJohn Baldwin u_char tag[AES_CBC_MAC_HASH_LEN]; 70926d292d3SJohn Baldwin u_char iv[AES_BLOCK_LEN]; 7109c0e3d3aSJohn Baldwin struct crypto_buffer_cursor cc_in, cc_out; 71126d292d3SJohn Baldwin const u_char *inblk; 71226d292d3SJohn Baldwin u_char *outblk; 713c0341432SJohn Baldwin union authctx ctx; 714c0341432SJohn Baldwin struct swcr_auth *swa; 715c0341432SJohn Baldwin struct swcr_encdec *swe; 716c0341432SJohn Baldwin struct auth_hash *axf; 717c0341432SJohn Baldwin struct enc_xform *exf; 71826d292d3SJohn Baldwin int blksz, error, ivlen, r, resid; 719c0341432SJohn Baldwin 720c0341432SJohn Baldwin swa = &ses->swcr_auth; 721c0341432SJohn Baldwin axf = swa->sw_axf; 722c0341432SJohn Baldwin 723c0341432SJohn Baldwin bcopy(swa->sw_ictx, &ctx, axf->ctxsize); 72426d292d3SJohn Baldwin blksz = AES_BLOCK_LEN; 72526d292d3SJohn Baldwin KASSERT(axf->blocksize == blksz, ("%s: axf block size mismatch", 72626d292d3SJohn Baldwin __func__)); 727c0341432SJohn Baldwin 728c0341432SJohn Baldwin swe = &ses->swcr_encdec; 729c0341432SJohn Baldwin exf = swe->sw_exf; 730723d8764SJohn Baldwin KASSERT(axf->blocksize == exf->native_blocksize, 731723d8764SJohn Baldwin ("%s: blocksize mismatch", __func__)); 732c0341432SJohn Baldwin 733c0341432SJohn Baldwin if ((crp->crp_flags & CRYPTO_F_IV_SEPARATE) == 0) 734c0341432SJohn Baldwin return (EINVAL); 735c0341432SJohn Baldwin 736c0341432SJohn Baldwin /* Initialize the IV */ 737c0341432SJohn Baldwin ivlen = AES_CCM_IV_LEN; 738c0341432SJohn Baldwin bcopy(crp->crp_iv, iv, ivlen); 739c0341432SJohn Baldwin 740c0341432SJohn Baldwin /* 741c0341432SJohn Baldwin * AES CCM-CBC-MAC needs to know the length of both the auth 742c0341432SJohn Baldwin * data and payload data before doing the auth computation. 743c0341432SJohn Baldwin */ 744c0341432SJohn Baldwin ctx.aes_cbc_mac_ctx.authDataLength = crp->crp_aad_length; 745c0341432SJohn Baldwin ctx.aes_cbc_mac_ctx.cryptDataLength = crp->crp_payload_length; 746c0341432SJohn Baldwin 747c0341432SJohn Baldwin /* Supply MAC with IV */ 748c0341432SJohn Baldwin axf->Reinit(&ctx, iv, ivlen); 749c0341432SJohn Baldwin 750c0341432SJohn Baldwin /* Supply MAC with AAD */ 75126d292d3SJohn Baldwin error = crypto_apply(crp, crp->crp_aad_start, crp->crp_aad_length, 75226d292d3SJohn Baldwin axf->Update, &ctx); 75326d292d3SJohn Baldwin if (error) 75426d292d3SJohn Baldwin return (error); 755c0341432SJohn Baldwin 756c0341432SJohn Baldwin exf->reinit(swe->sw_kschedule, iv); 757c0341432SJohn Baldwin 758c0341432SJohn Baldwin /* Do encryption/decryption with MAC */ 7599c0e3d3aSJohn Baldwin crypto_cursor_init(&cc_in, &crp->crp_buf); 7609c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc_in, crp->crp_payload_start); 7619c0e3d3aSJohn Baldwin if (CRYPTO_HAS_OUTPUT_BUFFER(crp)) { 7629c0e3d3aSJohn Baldwin crypto_cursor_init(&cc_out, &crp->crp_obuf); 7639c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc_out, crp->crp_payload_output_start); 7649c0e3d3aSJohn Baldwin } else 7659c0e3d3aSJohn Baldwin cc_out = cc_in; 76626d292d3SJohn Baldwin for (resid = crp->crp_payload_length; resid >= blksz; resid -= blksz) { 76726d292d3SJohn Baldwin if (crypto_cursor_seglen(&cc_in) < blksz) { 76826d292d3SJohn Baldwin crypto_cursor_copydata(&cc_in, blksz, blk); 76926d292d3SJohn Baldwin inblk = blk; 77026d292d3SJohn Baldwin } else { 77126d292d3SJohn Baldwin inblk = crypto_cursor_segbase(&cc_in); 77226d292d3SJohn Baldwin crypto_cursor_advance(&cc_in, blksz); 77326d292d3SJohn Baldwin } 774c0341432SJohn Baldwin if (CRYPTO_OP_IS_ENCRYPT(crp->crp_op)) { 77526d292d3SJohn Baldwin if (crypto_cursor_seglen(&cc_out) < blksz) 77626d292d3SJohn Baldwin outblk = blk; 77726d292d3SJohn Baldwin else 77826d292d3SJohn Baldwin outblk = crypto_cursor_segbase(&cc_out); 77926d292d3SJohn Baldwin axf->Update(&ctx, inblk, blksz); 78026d292d3SJohn Baldwin exf->encrypt(swe->sw_kschedule, inblk, outblk); 78126d292d3SJohn Baldwin if (outblk == blk) 78226d292d3SJohn Baldwin crypto_cursor_copyback(&cc_out, blksz, blk); 78326d292d3SJohn Baldwin else 78426d292d3SJohn Baldwin crypto_cursor_advance(&cc_out, blksz); 785c0341432SJohn Baldwin } else { 786c0341432SJohn Baldwin /* 787c0341432SJohn Baldwin * One of the problems with CCM+CBC is that 788c0341432SJohn Baldwin * the authentication is done on the 78926d292d3SJohn Baldwin * unencrypted data. As a result, we have to 790c0341432SJohn Baldwin * decrypt the data twice: once to generate 791c0341432SJohn Baldwin * the tag and a second time after the tag is 792c0341432SJohn Baldwin * verified. 793c0341432SJohn Baldwin */ 79426d292d3SJohn Baldwin exf->decrypt(swe->sw_kschedule, inblk, blk); 79526d292d3SJohn Baldwin axf->Update(&ctx, blk, blksz); 79626d292d3SJohn Baldwin } 79726d292d3SJohn Baldwin } 79826d292d3SJohn Baldwin if (resid > 0) { 79926d292d3SJohn Baldwin crypto_cursor_copydata(&cc_in, resid, blk); 80026d292d3SJohn Baldwin if (CRYPTO_OP_IS_ENCRYPT(crp->crp_op)) { 80126d292d3SJohn Baldwin axf->Update(&ctx, blk, resid); 80226d292d3SJohn Baldwin exf->encrypt_last(swe->sw_kschedule, blk, blk, resid); 80326d292d3SJohn Baldwin crypto_cursor_copyback(&cc_out, resid, blk); 80426d292d3SJohn Baldwin } else { 80526d292d3SJohn Baldwin exf->decrypt_last(swe->sw_kschedule, blk, blk, resid); 80626d292d3SJohn Baldwin axf->Update(&ctx, blk, resid); 807c0341432SJohn Baldwin } 80808fca7a5SJohn-Mark Gurney } 80908fca7a5SJohn-Mark Gurney 81008fca7a5SJohn-Mark Gurney /* Finalize MAC */ 81126d292d3SJohn Baldwin axf->Final(tag, &ctx); 81208fca7a5SJohn-Mark Gurney 81308fca7a5SJohn-Mark Gurney /* Validate tag */ 81420c128daSJohn Baldwin error = 0; 815c0341432SJohn Baldwin if (!CRYPTO_OP_IS_ENCRYPT(crp->crp_op)) { 81626d292d3SJohn Baldwin u_char tag2[AES_CBC_MAC_HASH_LEN]; 81720c128daSJohn Baldwin 818c0341432SJohn Baldwin crypto_copydata(crp, crp->crp_digest_start, swa->sw_mlen, 81926d292d3SJohn Baldwin tag2); 82008fca7a5SJohn-Mark Gurney 82126d292d3SJohn Baldwin r = timingsafe_bcmp(tag, tag2, swa->sw_mlen); 82226d292d3SJohn Baldwin explicit_bzero(tag2, sizeof(tag2)); 82320c128daSJohn Baldwin if (r != 0) { 82420c128daSJohn Baldwin error = EBADMSG; 82520c128daSJohn Baldwin goto out; 82620c128daSJohn Baldwin } 827c0341432SJohn Baldwin 82808fca7a5SJohn-Mark Gurney /* tag matches, decrypt data */ 829507281e5SSean Eric Fagan exf->reinit(swe->sw_kschedule, iv); 8309c0e3d3aSJohn Baldwin crypto_cursor_init(&cc_in, &crp->crp_buf); 8319c0e3d3aSJohn Baldwin crypto_cursor_advance(&cc_in, crp->crp_payload_start); 83226d292d3SJohn Baldwin for (resid = crp->crp_payload_length; resid > blksz; 83326d292d3SJohn Baldwin resid -= blksz) { 83426d292d3SJohn Baldwin if (crypto_cursor_seglen(&cc_in) < blksz) { 83526d292d3SJohn Baldwin crypto_cursor_copydata(&cc_in, blksz, blk); 83626d292d3SJohn Baldwin inblk = blk; 83726d292d3SJohn Baldwin } else { 83826d292d3SJohn Baldwin inblk = crypto_cursor_segbase(&cc_in); 83926d292d3SJohn Baldwin crypto_cursor_advance(&cc_in, blksz); 84026d292d3SJohn Baldwin } 84126d292d3SJohn Baldwin if (crypto_cursor_seglen(&cc_out) < blksz) 84226d292d3SJohn Baldwin outblk = blk; 84326d292d3SJohn Baldwin else 84426d292d3SJohn Baldwin outblk = crypto_cursor_segbase(&cc_out); 84526d292d3SJohn Baldwin exf->decrypt(swe->sw_kschedule, inblk, outblk); 84626d292d3SJohn Baldwin if (outblk == blk) 84726d292d3SJohn Baldwin crypto_cursor_copyback(&cc_out, blksz, blk); 84826d292d3SJohn Baldwin else 84926d292d3SJohn Baldwin crypto_cursor_advance(&cc_out, blksz); 85026d292d3SJohn Baldwin } 85126d292d3SJohn Baldwin if (resid > 0) { 85226d292d3SJohn Baldwin crypto_cursor_copydata(&cc_in, resid, blk); 85326d292d3SJohn Baldwin exf->decrypt_last(swe->sw_kschedule, blk, blk, resid); 85426d292d3SJohn Baldwin crypto_cursor_copyback(&cc_out, resid, blk); 85508fca7a5SJohn-Mark Gurney } 85608fca7a5SJohn-Mark Gurney } else { 85708fca7a5SJohn-Mark Gurney /* Inject the authentication data */ 85826d292d3SJohn Baldwin crypto_copyback(crp, crp->crp_digest_start, swa->sw_mlen, tag); 85908fca7a5SJohn-Mark Gurney } 86008fca7a5SJohn-Mark Gurney 86120c128daSJohn Baldwin out: 86220c128daSJohn Baldwin explicit_bzero(blkbuf, sizeof(blkbuf)); 86326d292d3SJohn Baldwin explicit_bzero(tag, sizeof(tag)); 86420c128daSJohn Baldwin explicit_bzero(iv, sizeof(iv)); 86520c128daSJohn Baldwin return (error); 86608fca7a5SJohn-Mark Gurney } 86708fca7a5SJohn-Mark Gurney 868091d81d1SSam Leffler /* 869c0341432SJohn Baldwin * Apply a cipher and a digest to perform EtA. 870c0341432SJohn Baldwin */ 871c0341432SJohn Baldwin static int 872c0341432SJohn Baldwin swcr_eta(struct swcr_session *ses, struct cryptop *crp) 873c0341432SJohn Baldwin { 874c0341432SJohn Baldwin int error; 875c0341432SJohn Baldwin 876c0341432SJohn Baldwin if (CRYPTO_OP_IS_ENCRYPT(crp->crp_op)) { 877c0341432SJohn Baldwin error = swcr_encdec(ses, crp); 878c0341432SJohn Baldwin if (error == 0) 879c0341432SJohn Baldwin error = swcr_authcompute(ses, crp); 880c0341432SJohn Baldwin } else { 881c0341432SJohn Baldwin error = swcr_authcompute(ses, crp); 882c0341432SJohn Baldwin if (error == 0) 883c0341432SJohn Baldwin error = swcr_encdec(ses, crp); 884c0341432SJohn Baldwin } 885c0341432SJohn Baldwin return (error); 886c0341432SJohn Baldwin } 887c0341432SJohn Baldwin 888c0341432SJohn Baldwin /* 889091d81d1SSam Leffler * Apply a compression/decompression algorithm 890091d81d1SSam Leffler */ 891091d81d1SSam Leffler static int 892c0341432SJohn Baldwin swcr_compdec(struct swcr_session *ses, struct cryptop *crp) 893091d81d1SSam Leffler { 894091d81d1SSam Leffler u_int8_t *data, *out; 895091d81d1SSam Leffler struct comp_algo *cxf; 896091d81d1SSam Leffler int adj; 897091d81d1SSam Leffler u_int32_t result; 898091d81d1SSam Leffler 899c0341432SJohn Baldwin cxf = ses->swcr_compdec.sw_cxf; 900091d81d1SSam Leffler 901091d81d1SSam Leffler /* We must handle the whole buffer of data in one time 902091d81d1SSam Leffler * then if there is not all the data in the mbuf, we must 903091d81d1SSam Leffler * copy in a buffer. 904091d81d1SSam Leffler */ 905091d81d1SSam Leffler 906c0341432SJohn Baldwin data = malloc(crp->crp_payload_length, M_CRYPTO_DATA, M_NOWAIT); 907091d81d1SSam Leffler if (data == NULL) 908091d81d1SSam Leffler return (EINVAL); 909c0341432SJohn Baldwin crypto_copydata(crp, crp->crp_payload_start, crp->crp_payload_length, 910c0341432SJohn Baldwin data); 911091d81d1SSam Leffler 912c0341432SJohn Baldwin if (CRYPTO_OP_IS_COMPRESS(crp->crp_op)) 913c0341432SJohn Baldwin result = cxf->compress(data, crp->crp_payload_length, &out); 914091d81d1SSam Leffler else 915c0341432SJohn Baldwin result = cxf->decompress(data, crp->crp_payload_length, &out); 916091d81d1SSam Leffler 9171ede983cSDag-Erling Smørgrav free(data, M_CRYPTO_DATA); 918091d81d1SSam Leffler if (result == 0) 919c0341432SJohn Baldwin return (EINVAL); 920c0341432SJohn Baldwin crp->crp_olen = result; 921c0341432SJohn Baldwin 922c0341432SJohn Baldwin /* Check the compressed size when doing compression */ 923c0341432SJohn Baldwin if (CRYPTO_OP_IS_COMPRESS(crp->crp_op)) { 924c0341432SJohn Baldwin if (result >= crp->crp_payload_length) { 925c0341432SJohn Baldwin /* Compression was useless, we lost time */ 926c0341432SJohn Baldwin free(out, M_CRYPTO_DATA); 927c0341432SJohn Baldwin return (0); 928c0341432SJohn Baldwin } 929c0341432SJohn Baldwin } 930091d81d1SSam Leffler 931091d81d1SSam Leffler /* Copy back the (de)compressed data. m_copyback is 932091d81d1SSam Leffler * extending the mbuf as necessary. 933091d81d1SSam Leffler */ 934c0341432SJohn Baldwin crypto_copyback(crp, crp->crp_payload_start, result, out); 935c0341432SJohn Baldwin if (result < crp->crp_payload_length) { 9369c0e3d3aSJohn Baldwin switch (crp->crp_buf.cb_type) { 937c0341432SJohn Baldwin case CRYPTO_BUF_MBUF: 938c0341432SJohn Baldwin adj = result - crp->crp_payload_length; 9399c0e3d3aSJohn Baldwin m_adj(crp->crp_buf.cb_mbuf, adj); 940c0341432SJohn Baldwin break; 941c0341432SJohn Baldwin case CRYPTO_BUF_UIO: { 9429c0e3d3aSJohn Baldwin struct uio *uio = crp->crp_buf.cb_uio; 943091d81d1SSam Leffler int ind; 944091d81d1SSam Leffler 945c0341432SJohn Baldwin adj = crp->crp_payload_length - result; 946091d81d1SSam Leffler ind = uio->uio_iovcnt - 1; 947091d81d1SSam Leffler 948091d81d1SSam Leffler while (adj > 0 && ind >= 0) { 949091d81d1SSam Leffler if (adj < uio->uio_iov[ind].iov_len) { 950091d81d1SSam Leffler uio->uio_iov[ind].iov_len -= adj; 951091d81d1SSam Leffler break; 952091d81d1SSam Leffler } 953091d81d1SSam Leffler 954091d81d1SSam Leffler adj -= uio->uio_iov[ind].iov_len; 955091d81d1SSam Leffler uio->uio_iov[ind].iov_len = 0; 956091d81d1SSam Leffler ind--; 957091d81d1SSam Leffler uio->uio_iovcnt--; 958091d81d1SSam Leffler } 959091d81d1SSam Leffler } 960c0341432SJohn Baldwin break; 9619c0e3d3aSJohn Baldwin default: 9629c0e3d3aSJohn Baldwin break; 963c0341432SJohn Baldwin } 964091d81d1SSam Leffler } 9651ede983cSDag-Erling Smørgrav free(out, M_CRYPTO_DATA); 966091d81d1SSam Leffler return 0; 967091d81d1SSam Leffler } 968091d81d1SSam Leffler 969091d81d1SSam Leffler static int 9703e947048SJohn Baldwin swcr_setup_cipher(struct swcr_session *ses, 971c0341432SJohn Baldwin const struct crypto_session_params *csp) 972091d81d1SSam Leffler { 973c0341432SJohn Baldwin struct swcr_encdec *swe; 974091d81d1SSam Leffler struct enc_xform *txf; 975f6c4bc3bSPawel Jakub Dawidek int error; 976091d81d1SSam Leffler 977c0341432SJohn Baldwin swe = &ses->swcr_encdec; 978c0341432SJohn Baldwin txf = crypto_cipher(csp); 979c0341432SJohn Baldwin MPASS(txf->ivsize == csp->csp_ivlen); 9803e947048SJohn Baldwin if (txf->ctxsize != 0) { 9813e947048SJohn Baldwin swe->sw_kschedule = malloc(txf->ctxsize, M_CRYPTO_DATA, 9823e947048SJohn Baldwin M_NOWAIT); 9833e947048SJohn Baldwin if (swe->sw_kschedule == NULL) 9843e947048SJohn Baldwin return (ENOMEM); 9853e947048SJohn Baldwin } 986c0341432SJohn Baldwin if (csp->csp_cipher_key != NULL) { 9873e947048SJohn Baldwin error = txf->setkey(swe->sw_kschedule, 988c0341432SJohn Baldwin csp->csp_cipher_key, csp->csp_cipher_klen); 989c0341432SJohn Baldwin if (error) 990c0341432SJohn Baldwin return (error); 991091d81d1SSam Leffler } 992c0341432SJohn Baldwin swe->sw_exf = txf; 993c0341432SJohn Baldwin return (0); 994f6c4bc3bSPawel Jakub Dawidek } 995091d81d1SSam Leffler 996c0341432SJohn Baldwin static int 997c0341432SJohn Baldwin swcr_setup_auth(struct swcr_session *ses, 998c0341432SJohn Baldwin const struct crypto_session_params *csp) 999c0341432SJohn Baldwin { 1000c0341432SJohn Baldwin struct swcr_auth *swa; 1001c0341432SJohn Baldwin struct auth_hash *axf; 1002c0341432SJohn Baldwin 1003c0341432SJohn Baldwin swa = &ses->swcr_auth; 1004c0341432SJohn Baldwin 1005c0341432SJohn Baldwin axf = crypto_auth_hash(csp); 1006c0341432SJohn Baldwin swa->sw_axf = axf; 1007c0341432SJohn Baldwin if (csp->csp_auth_mlen < 0 || csp->csp_auth_mlen > axf->hashsize) 1008c0341432SJohn Baldwin return (EINVAL); 1009c0341432SJohn Baldwin if (csp->csp_auth_mlen == 0) 1010c0341432SJohn Baldwin swa->sw_mlen = axf->hashsize; 1011c0341432SJohn Baldwin else 1012c0341432SJohn Baldwin swa->sw_mlen = csp->csp_auth_mlen; 1013c0341432SJohn Baldwin swa->sw_ictx = malloc(axf->ctxsize, M_CRYPTO_DATA, M_NOWAIT); 1014c0341432SJohn Baldwin if (swa->sw_ictx == NULL) 1015c0341432SJohn Baldwin return (ENOBUFS); 1016c0341432SJohn Baldwin 1017c0341432SJohn Baldwin switch (csp->csp_auth_alg) { 1018091d81d1SSam Leffler case CRYPTO_SHA1_HMAC: 1019c97f39ceSConrad Meyer case CRYPTO_SHA2_224_HMAC: 1020f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_256_HMAC: 1021f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_384_HMAC: 1022f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_512_HMAC: 1023091d81d1SSam Leffler case CRYPTO_NULL_HMAC: 1024091d81d1SSam Leffler case CRYPTO_RIPEMD160_HMAC: 10253a0b6a93SJohn Baldwin swa->sw_octx = malloc(axf->ctxsize, M_CRYPTO_DATA, 1026091d81d1SSam Leffler M_NOWAIT); 1027c0341432SJohn Baldwin if (swa->sw_octx == NULL) 1028c0341432SJohn Baldwin return (ENOBUFS); 1029c0341432SJohn Baldwin 1030c0341432SJohn Baldwin if (csp->csp_auth_key != NULL) { 1031c0341432SJohn Baldwin swcr_authprepare(axf, swa, csp->csp_auth_key, 1032c0341432SJohn Baldwin csp->csp_auth_klen); 1033091d81d1SSam Leffler } 1034091d81d1SSam Leffler 1035c0341432SJohn Baldwin if (csp->csp_mode == CSP_MODE_DIGEST) 1036c0341432SJohn Baldwin ses->swcr_process = swcr_authcompute; 1037091d81d1SSam Leffler break; 1038091d81d1SSam Leffler case CRYPTO_SHA1: 1039c4729f6eSConrad Meyer case CRYPTO_SHA2_224: 1040c4729f6eSConrad Meyer case CRYPTO_SHA2_256: 1041c4729f6eSConrad Meyer case CRYPTO_SHA2_384: 1042c4729f6eSConrad Meyer case CRYPTO_SHA2_512: 1043c0341432SJohn Baldwin axf->Init(swa->sw_ictx); 1044c0341432SJohn Baldwin if (csp->csp_mode == CSP_MODE_DIGEST) 1045c0341432SJohn Baldwin ses->swcr_process = swcr_authcompute; 1046c0341432SJohn Baldwin break; 1047c0341432SJohn Baldwin case CRYPTO_AES_NIST_GMAC: 1048c0341432SJohn Baldwin axf->Init(swa->sw_ictx); 1049c0341432SJohn Baldwin axf->Setkey(swa->sw_ictx, csp->csp_auth_key, 1050c0341432SJohn Baldwin csp->csp_auth_klen); 1051c0341432SJohn Baldwin if (csp->csp_mode == CSP_MODE_DIGEST) 1052c0341432SJohn Baldwin ses->swcr_process = swcr_gmac; 1053c0341432SJohn Baldwin break; 1054c0341432SJohn Baldwin case CRYPTO_POLY1305: 1055c0341432SJohn Baldwin case CRYPTO_BLAKE2B: 1056c0341432SJohn Baldwin case CRYPTO_BLAKE2S: 1057c0341432SJohn Baldwin /* 1058c0341432SJohn Baldwin * Blake2b and Blake2s support an optional key but do 1059c0341432SJohn Baldwin * not require one. 1060c0341432SJohn Baldwin */ 1061c0341432SJohn Baldwin if (csp->csp_auth_klen == 0 || csp->csp_auth_key != NULL) 1062c0341432SJohn Baldwin axf->Setkey(swa->sw_ictx, csp->csp_auth_key, 1063c0341432SJohn Baldwin csp->csp_auth_klen); 1064c0341432SJohn Baldwin axf->Init(swa->sw_ictx); 1065c0341432SJohn Baldwin if (csp->csp_mode == CSP_MODE_DIGEST) 1066c0341432SJohn Baldwin ses->swcr_process = swcr_authcompute; 1067c0341432SJohn Baldwin break; 1068c0341432SJohn Baldwin case CRYPTO_AES_CCM_CBC_MAC: 1069c0341432SJohn Baldwin axf->Init(swa->sw_ictx); 1070c0341432SJohn Baldwin axf->Setkey(swa->sw_ictx, csp->csp_auth_key, 1071c0341432SJohn Baldwin csp->csp_auth_klen); 1072c0341432SJohn Baldwin if (csp->csp_mode == CSP_MODE_DIGEST) 1073c0341432SJohn Baldwin ses->swcr_process = swcr_ccm_cbc_mac; 1074c0341432SJohn Baldwin break; 1075091d81d1SSam Leffler } 1076091d81d1SSam Leffler 1077c0341432SJohn Baldwin return (0); 1078c0341432SJohn Baldwin } 107908fca7a5SJohn-Mark Gurney 1080c0341432SJohn Baldwin static int 1081c0341432SJohn Baldwin swcr_setup_gcm(struct swcr_session *ses, 1082c0341432SJohn Baldwin const struct crypto_session_params *csp) 1083c0341432SJohn Baldwin { 1084c0341432SJohn Baldwin struct swcr_auth *swa; 1085c0341432SJohn Baldwin struct auth_hash *axf; 1086c0341432SJohn Baldwin 1087c0341432SJohn Baldwin if (csp->csp_ivlen != AES_GCM_IV_LEN) 1088c0341432SJohn Baldwin return (EINVAL); 1089c0341432SJohn Baldwin 1090c0341432SJohn Baldwin /* First, setup the auth side. */ 1091c0341432SJohn Baldwin swa = &ses->swcr_auth; 1092c0341432SJohn Baldwin switch (csp->csp_cipher_klen * 8) { 1093c0341432SJohn Baldwin case 128: 1094c0341432SJohn Baldwin axf = &auth_hash_nist_gmac_aes_128; 1095c0341432SJohn Baldwin break; 1096c0341432SJohn Baldwin case 192: 1097c0341432SJohn Baldwin axf = &auth_hash_nist_gmac_aes_192; 1098c0341432SJohn Baldwin break; 1099c0341432SJohn Baldwin case 256: 1100c0341432SJohn Baldwin axf = &auth_hash_nist_gmac_aes_256; 1101c0341432SJohn Baldwin break; 1102c0341432SJohn Baldwin default: 1103c0341432SJohn Baldwin return (EINVAL); 1104c0341432SJohn Baldwin } 1105c0341432SJohn Baldwin swa->sw_axf = axf; 1106c0341432SJohn Baldwin if (csp->csp_auth_mlen < 0 || csp->csp_auth_mlen > axf->hashsize) 1107c0341432SJohn Baldwin return (EINVAL); 1108c0341432SJohn Baldwin if (csp->csp_auth_mlen == 0) 1109c0341432SJohn Baldwin swa->sw_mlen = axf->hashsize; 1110c0341432SJohn Baldwin else 1111c0341432SJohn Baldwin swa->sw_mlen = csp->csp_auth_mlen; 1112c0341432SJohn Baldwin swa->sw_ictx = malloc(axf->ctxsize, M_CRYPTO_DATA, M_NOWAIT); 1113c0341432SJohn Baldwin if (swa->sw_ictx == NULL) 1114c0341432SJohn Baldwin return (ENOBUFS); 1115c0341432SJohn Baldwin axf->Init(swa->sw_ictx); 1116c0341432SJohn Baldwin if (csp->csp_cipher_key != NULL) 1117c0341432SJohn Baldwin axf->Setkey(swa->sw_ictx, csp->csp_cipher_key, 1118c0341432SJohn Baldwin csp->csp_cipher_klen); 1119c0341432SJohn Baldwin 1120c0341432SJohn Baldwin /* Second, setup the cipher side. */ 11213e947048SJohn Baldwin return (swcr_setup_cipher(ses, csp)); 1122c0341432SJohn Baldwin } 1123c0341432SJohn Baldwin 1124c0341432SJohn Baldwin static int 1125c0341432SJohn Baldwin swcr_setup_ccm(struct swcr_session *ses, 1126c0341432SJohn Baldwin const struct crypto_session_params *csp) 1127c0341432SJohn Baldwin { 1128c0341432SJohn Baldwin struct swcr_auth *swa; 1129c0341432SJohn Baldwin struct auth_hash *axf; 1130c0341432SJohn Baldwin 1131c0341432SJohn Baldwin if (csp->csp_ivlen != AES_CCM_IV_LEN) 1132c0341432SJohn Baldwin return (EINVAL); 1133c0341432SJohn Baldwin 1134c0341432SJohn Baldwin /* First, setup the auth side. */ 1135c0341432SJohn Baldwin swa = &ses->swcr_auth; 1136c0341432SJohn Baldwin switch (csp->csp_cipher_klen * 8) { 1137507281e5SSean Eric Fagan case 128: 1138507281e5SSean Eric Fagan axf = &auth_hash_ccm_cbc_mac_128; 1139507281e5SSean Eric Fagan break; 1140507281e5SSean Eric Fagan case 192: 1141507281e5SSean Eric Fagan axf = &auth_hash_ccm_cbc_mac_192; 1142507281e5SSean Eric Fagan break; 1143507281e5SSean Eric Fagan case 256: 1144507281e5SSean Eric Fagan axf = &auth_hash_ccm_cbc_mac_256; 1145507281e5SSean Eric Fagan break; 1146507281e5SSean Eric Fagan default: 1147c0341432SJohn Baldwin return (EINVAL); 1148507281e5SSean Eric Fagan } 1149c0341432SJohn Baldwin swa->sw_axf = axf; 1150c0341432SJohn Baldwin if (csp->csp_auth_mlen < 0 || csp->csp_auth_mlen > axf->hashsize) 1151c0341432SJohn Baldwin return (EINVAL); 1152c0341432SJohn Baldwin if (csp->csp_auth_mlen == 0) 1153c0341432SJohn Baldwin swa->sw_mlen = axf->hashsize; 1154c0341432SJohn Baldwin else 1155c0341432SJohn Baldwin swa->sw_mlen = csp->csp_auth_mlen; 1156c0341432SJohn Baldwin swa->sw_ictx = malloc(axf->ctxsize, M_CRYPTO_DATA, M_NOWAIT); 1157c0341432SJohn Baldwin if (swa->sw_ictx == NULL) 1158c0341432SJohn Baldwin return (ENOBUFS); 1159c0341432SJohn Baldwin axf->Init(swa->sw_ictx); 1160c0341432SJohn Baldwin if (csp->csp_cipher_key != NULL) 1161c0341432SJohn Baldwin axf->Setkey(swa->sw_ictx, csp->csp_cipher_key, 1162c0341432SJohn Baldwin csp->csp_cipher_klen); 116308fca7a5SJohn-Mark Gurney 1164c0341432SJohn Baldwin /* Second, setup the cipher side. */ 11653e947048SJohn Baldwin return (swcr_setup_cipher(ses, csp)); 11662e2e26d1SJohn Baldwin } 1167a2bc81bfSJohn-Mark Gurney 1168c0341432SJohn Baldwin static bool 1169c0341432SJohn Baldwin swcr_auth_supported(const struct crypto_session_params *csp) 1170109919c6SBenno Rice { 1171091d81d1SSam Leffler struct auth_hash *axf; 1172091d81d1SSam Leffler 1173c0341432SJohn Baldwin axf = crypto_auth_hash(csp); 1174c0341432SJohn Baldwin if (axf == NULL) 1175c0341432SJohn Baldwin return (false); 1176c0341432SJohn Baldwin switch (csp->csp_auth_alg) { 1177091d81d1SSam Leffler case CRYPTO_SHA1_HMAC: 1178c97f39ceSConrad Meyer case CRYPTO_SHA2_224_HMAC: 1179f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_256_HMAC: 1180f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_384_HMAC: 1181f6c4bc3bSPawel Jakub Dawidek case CRYPTO_SHA2_512_HMAC: 1182091d81d1SSam Leffler case CRYPTO_NULL_HMAC: 1183c0341432SJohn Baldwin case CRYPTO_RIPEMD160_HMAC: 1184091d81d1SSam Leffler break; 1185c0341432SJohn Baldwin case CRYPTO_AES_NIST_GMAC: 1186c0341432SJohn Baldwin switch (csp->csp_auth_klen * 8) { 1187c0341432SJohn Baldwin case 128: 1188c0341432SJohn Baldwin case 192: 1189c0341432SJohn Baldwin case 256: 1190c0341432SJohn Baldwin break; 1191c0341432SJohn Baldwin default: 1192c0341432SJohn Baldwin return (false); 1193c0341432SJohn Baldwin } 1194c0341432SJohn Baldwin if (csp->csp_auth_key == NULL) 1195c0341432SJohn Baldwin return (false); 1196c0341432SJohn Baldwin if (csp->csp_ivlen != AES_GCM_IV_LEN) 1197c0341432SJohn Baldwin return (false); 1198c0341432SJohn Baldwin break; 119925b7033bSConrad Meyer case CRYPTO_POLY1305: 1200c0341432SJohn Baldwin if (csp->csp_auth_klen != POLY1305_KEY_LEN) 1201c0341432SJohn Baldwin return (false); 1202c0341432SJohn Baldwin break; 1203c0341432SJohn Baldwin case CRYPTO_AES_CCM_CBC_MAC: 1204c0341432SJohn Baldwin switch (csp->csp_auth_klen * 8) { 1205c0341432SJohn Baldwin case 128: 1206c0341432SJohn Baldwin case 192: 1207c0341432SJohn Baldwin case 256: 1208c0341432SJohn Baldwin break; 1209c0341432SJohn Baldwin default: 1210c0341432SJohn Baldwin return (false); 1211c0341432SJohn Baldwin } 1212c0341432SJohn Baldwin if (csp->csp_auth_key == NULL) 1213c0341432SJohn Baldwin return (false); 1214c0341432SJohn Baldwin if (csp->csp_ivlen != AES_CCM_IV_LEN) 1215c0341432SJohn Baldwin return (false); 1216c0341432SJohn Baldwin break; 1217c0341432SJohn Baldwin } 1218c0341432SJohn Baldwin return (true); 1219c0341432SJohn Baldwin } 1220091d81d1SSam Leffler 1221c0341432SJohn Baldwin static bool 1222c0341432SJohn Baldwin swcr_cipher_supported(const struct crypto_session_params *csp) 1223c0341432SJohn Baldwin { 1224c0341432SJohn Baldwin struct enc_xform *txf; 1225c0341432SJohn Baldwin 1226c0341432SJohn Baldwin txf = crypto_cipher(csp); 1227c0341432SJohn Baldwin if (txf == NULL) 1228c0341432SJohn Baldwin return (false); 1229c0341432SJohn Baldwin if (csp->csp_cipher_alg != CRYPTO_NULL_CBC && 1230c0341432SJohn Baldwin txf->ivsize != csp->csp_ivlen) 1231c0341432SJohn Baldwin return (false); 1232c0341432SJohn Baldwin return (true); 1233c0341432SJohn Baldwin } 1234c0341432SJohn Baldwin 1235c0341432SJohn Baldwin static int 1236c0341432SJohn Baldwin swcr_probesession(device_t dev, const struct crypto_session_params *csp) 1237c0341432SJohn Baldwin { 1238c0341432SJohn Baldwin 12399c0e3d3aSJohn Baldwin if ((csp->csp_flags & ~(CSP_F_SEPARATE_OUTPUT)) != 0) 1240c0341432SJohn Baldwin return (EINVAL); 1241c0341432SJohn Baldwin switch (csp->csp_mode) { 1242c0341432SJohn Baldwin case CSP_MODE_COMPRESS: 1243c0341432SJohn Baldwin switch (csp->csp_cipher_alg) { 1244c0341432SJohn Baldwin case CRYPTO_DEFLATE_COMP: 1245c0341432SJohn Baldwin break; 1246c0341432SJohn Baldwin default: 1247c0341432SJohn Baldwin return (EINVAL); 12485fbc5b5aSConrad Meyer } 1249091d81d1SSam Leffler break; 1250c0341432SJohn Baldwin case CSP_MODE_CIPHER: 1251c0341432SJohn Baldwin switch (csp->csp_cipher_alg) { 1252c0341432SJohn Baldwin case CRYPTO_AES_NIST_GCM_16: 1253c0341432SJohn Baldwin case CRYPTO_AES_CCM_16: 1254c0341432SJohn Baldwin return (EINVAL); 1255c0341432SJohn Baldwin default: 1256c0341432SJohn Baldwin if (!swcr_cipher_supported(csp)) 1257c0341432SJohn Baldwin return (EINVAL); 1258091d81d1SSam Leffler break; 1259091d81d1SSam Leffler } 1260c0341432SJohn Baldwin break; 1261c0341432SJohn Baldwin case CSP_MODE_DIGEST: 1262c0341432SJohn Baldwin if (!swcr_auth_supported(csp)) 1263c0341432SJohn Baldwin return (EINVAL); 1264c0341432SJohn Baldwin break; 1265c0341432SJohn Baldwin case CSP_MODE_AEAD: 1266c0341432SJohn Baldwin switch (csp->csp_cipher_alg) { 1267c0341432SJohn Baldwin case CRYPTO_AES_NIST_GCM_16: 1268c0341432SJohn Baldwin case CRYPTO_AES_CCM_16: 1269c0341432SJohn Baldwin break; 1270c0341432SJohn Baldwin default: 1271c0341432SJohn Baldwin return (EINVAL); 1272c0341432SJohn Baldwin } 1273c0341432SJohn Baldwin break; 1274c0341432SJohn Baldwin case CSP_MODE_ETA: 1275c0341432SJohn Baldwin /* AEAD algorithms cannot be used for EtA. */ 1276c0341432SJohn Baldwin switch (csp->csp_cipher_alg) { 1277c0341432SJohn Baldwin case CRYPTO_AES_NIST_GCM_16: 1278c0341432SJohn Baldwin case CRYPTO_AES_CCM_16: 1279c0341432SJohn Baldwin return (EINVAL); 1280c0341432SJohn Baldwin } 1281c0341432SJohn Baldwin switch (csp->csp_auth_alg) { 1282c0341432SJohn Baldwin case CRYPTO_AES_NIST_GMAC: 1283c0341432SJohn Baldwin case CRYPTO_AES_CCM_CBC_MAC: 1284c0341432SJohn Baldwin return (EINVAL); 1285c0341432SJohn Baldwin } 1286c0341432SJohn Baldwin 1287c0341432SJohn Baldwin if (!swcr_cipher_supported(csp) || 1288c0341432SJohn Baldwin !swcr_auth_supported(csp)) 1289c0341432SJohn Baldwin return (EINVAL); 1290c0341432SJohn Baldwin break; 1291c0341432SJohn Baldwin default: 1292c0341432SJohn Baldwin return (EINVAL); 1293c0341432SJohn Baldwin } 1294c0341432SJohn Baldwin 1295c0341432SJohn Baldwin return (CRYPTODEV_PROBE_SOFTWARE); 1296c0341432SJohn Baldwin } 1297c0341432SJohn Baldwin 1298c0341432SJohn Baldwin /* 1299c0341432SJohn Baldwin * Generate a new software session. 1300c0341432SJohn Baldwin */ 1301c0341432SJohn Baldwin static int 1302c0341432SJohn Baldwin swcr_newsession(device_t dev, crypto_session_t cses, 1303c0341432SJohn Baldwin const struct crypto_session_params *csp) 1304c0341432SJohn Baldwin { 1305c0341432SJohn Baldwin struct swcr_session *ses; 1306c0341432SJohn Baldwin struct swcr_encdec *swe; 1307c0341432SJohn Baldwin struct swcr_auth *swa; 1308c0341432SJohn Baldwin struct comp_algo *cxf; 1309c0341432SJohn Baldwin int error; 1310c0341432SJohn Baldwin 1311c0341432SJohn Baldwin ses = crypto_get_driver_session(cses); 1312c0341432SJohn Baldwin mtx_init(&ses->swcr_lock, "swcr session lock", NULL, MTX_DEF); 1313c0341432SJohn Baldwin 1314c0341432SJohn Baldwin error = 0; 1315c0341432SJohn Baldwin swe = &ses->swcr_encdec; 1316c0341432SJohn Baldwin swa = &ses->swcr_auth; 1317c0341432SJohn Baldwin switch (csp->csp_mode) { 1318c0341432SJohn Baldwin case CSP_MODE_COMPRESS: 1319c0341432SJohn Baldwin switch (csp->csp_cipher_alg) { 1320c0341432SJohn Baldwin case CRYPTO_DEFLATE_COMP: 1321c0341432SJohn Baldwin cxf = &comp_algo_deflate; 1322c0341432SJohn Baldwin break; 1323c0341432SJohn Baldwin #ifdef INVARIANTS 1324c0341432SJohn Baldwin default: 1325c0341432SJohn Baldwin panic("bad compression algo"); 1326c0341432SJohn Baldwin #endif 1327c0341432SJohn Baldwin } 1328c0341432SJohn Baldwin ses->swcr_compdec.sw_cxf = cxf; 1329c0341432SJohn Baldwin ses->swcr_process = swcr_compdec; 1330c0341432SJohn Baldwin break; 1331c0341432SJohn Baldwin case CSP_MODE_CIPHER: 1332c0341432SJohn Baldwin switch (csp->csp_cipher_alg) { 1333c0341432SJohn Baldwin case CRYPTO_NULL_CBC: 1334c0341432SJohn Baldwin ses->swcr_process = swcr_null; 1335c0341432SJohn Baldwin break; 1336c0341432SJohn Baldwin #ifdef INVARIANTS 1337c0341432SJohn Baldwin case CRYPTO_AES_NIST_GCM_16: 1338c0341432SJohn Baldwin case CRYPTO_AES_CCM_16: 1339c0341432SJohn Baldwin panic("bad cipher algo"); 1340c0341432SJohn Baldwin #endif 1341c0341432SJohn Baldwin default: 13423e947048SJohn Baldwin error = swcr_setup_cipher(ses, csp); 1343c0341432SJohn Baldwin if (error == 0) 1344c0341432SJohn Baldwin ses->swcr_process = swcr_encdec; 1345c0341432SJohn Baldwin } 1346c0341432SJohn Baldwin break; 1347c0341432SJohn Baldwin case CSP_MODE_DIGEST: 1348c0341432SJohn Baldwin error = swcr_setup_auth(ses, csp); 1349c0341432SJohn Baldwin break; 1350c0341432SJohn Baldwin case CSP_MODE_AEAD: 1351c0341432SJohn Baldwin switch (csp->csp_cipher_alg) { 1352c0341432SJohn Baldwin case CRYPTO_AES_NIST_GCM_16: 1353c0341432SJohn Baldwin error = swcr_setup_gcm(ses, csp); 1354c0341432SJohn Baldwin if (error == 0) 1355c0341432SJohn Baldwin ses->swcr_process = swcr_gcm; 1356c0341432SJohn Baldwin break; 1357c0341432SJohn Baldwin case CRYPTO_AES_CCM_16: 1358c0341432SJohn Baldwin error = swcr_setup_ccm(ses, csp); 1359c0341432SJohn Baldwin if (error == 0) 1360c0341432SJohn Baldwin ses->swcr_process = swcr_ccm; 1361c0341432SJohn Baldwin break; 1362c0341432SJohn Baldwin #ifdef INVARIANTS 1363c0341432SJohn Baldwin default: 1364c0341432SJohn Baldwin panic("bad aead algo"); 1365c0341432SJohn Baldwin #endif 1366c0341432SJohn Baldwin } 1367c0341432SJohn Baldwin break; 1368c0341432SJohn Baldwin case CSP_MODE_ETA: 1369c0341432SJohn Baldwin #ifdef INVARIANTS 1370c0341432SJohn Baldwin switch (csp->csp_cipher_alg) { 1371c0341432SJohn Baldwin case CRYPTO_AES_NIST_GCM_16: 1372c0341432SJohn Baldwin case CRYPTO_AES_CCM_16: 1373c0341432SJohn Baldwin panic("bad eta cipher algo"); 1374c0341432SJohn Baldwin } 1375c0341432SJohn Baldwin switch (csp->csp_auth_alg) { 1376c0341432SJohn Baldwin case CRYPTO_AES_NIST_GMAC: 1377c0341432SJohn Baldwin case CRYPTO_AES_CCM_CBC_MAC: 1378c0341432SJohn Baldwin panic("bad eta auth algo"); 1379c0341432SJohn Baldwin } 1380c0341432SJohn Baldwin #endif 1381c0341432SJohn Baldwin 1382c0341432SJohn Baldwin error = swcr_setup_auth(ses, csp); 1383c0341432SJohn Baldwin if (error) 1384c0341432SJohn Baldwin break; 1385c0341432SJohn Baldwin if (csp->csp_cipher_alg == CRYPTO_NULL_CBC) { 1386c0341432SJohn Baldwin /* Effectively degrade to digest mode. */ 1387c0341432SJohn Baldwin ses->swcr_process = swcr_authcompute; 1388c0341432SJohn Baldwin break; 1389c0341432SJohn Baldwin } 1390c0341432SJohn Baldwin 13913e947048SJohn Baldwin error = swcr_setup_cipher(ses, csp); 1392c0341432SJohn Baldwin if (error == 0) 1393c0341432SJohn Baldwin ses->swcr_process = swcr_eta; 1394c0341432SJohn Baldwin break; 1395c0341432SJohn Baldwin default: 1396c0341432SJohn Baldwin error = EINVAL; 1397c0341432SJohn Baldwin } 1398c0341432SJohn Baldwin 1399c0341432SJohn Baldwin if (error) 1400c0341432SJohn Baldwin swcr_freesession(dev, cses); 1401c0341432SJohn Baldwin return (error); 1402c0341432SJohn Baldwin } 1403c0341432SJohn Baldwin 1404c0341432SJohn Baldwin static void 1405c0341432SJohn Baldwin swcr_freesession(device_t dev, crypto_session_t cses) 1406c0341432SJohn Baldwin { 1407c0341432SJohn Baldwin struct swcr_session *ses; 1408c0341432SJohn Baldwin struct swcr_auth *swa; 1409c0341432SJohn Baldwin struct auth_hash *axf; 1410c0341432SJohn Baldwin 1411c0341432SJohn Baldwin ses = crypto_get_driver_session(cses); 1412c0341432SJohn Baldwin 1413c0341432SJohn Baldwin mtx_destroy(&ses->swcr_lock); 1414c0341432SJohn Baldwin 14153e947048SJohn Baldwin zfree(ses->swcr_encdec.sw_kschedule, M_CRYPTO_DATA); 1416c0341432SJohn Baldwin 1417c0341432SJohn Baldwin axf = ses->swcr_auth.sw_axf; 1418c0341432SJohn Baldwin if (axf != NULL) { 1419c0341432SJohn Baldwin swa = &ses->swcr_auth; 1420c0341432SJohn Baldwin if (swa->sw_ictx != NULL) { 1421c0341432SJohn Baldwin explicit_bzero(swa->sw_ictx, axf->ctxsize); 1422c0341432SJohn Baldwin free(swa->sw_ictx, M_CRYPTO_DATA); 1423c0341432SJohn Baldwin } 1424c0341432SJohn Baldwin if (swa->sw_octx != NULL) { 14253a0b6a93SJohn Baldwin explicit_bzero(swa->sw_octx, axf->ctxsize); 1426c0341432SJohn Baldwin free(swa->sw_octx, M_CRYPTO_DATA); 1427c0341432SJohn Baldwin } 1428091d81d1SSam Leffler } 1429091d81d1SSam Leffler } 1430091d81d1SSam Leffler 1431091d81d1SSam Leffler /* 1432091d81d1SSam Leffler * Process a software request. 1433091d81d1SSam Leffler */ 1434091d81d1SSam Leffler static int 14356810ad6fSSam Leffler swcr_process(device_t dev, struct cryptop *crp, int hint) 1436091d81d1SSam Leffler { 1437c0341432SJohn Baldwin struct swcr_session *ses; 1438091d81d1SSam Leffler 14391b0909d5SConrad Meyer ses = crypto_get_driver_session(crp->crp_session); 1440a7fcb1afSSean Eric Fagan mtx_lock(&ses->swcr_lock); 1441091d81d1SSam Leffler 1442c0341432SJohn Baldwin crp->crp_etype = ses->swcr_process(ses, crp); 1443091d81d1SSam Leffler 1444a7fcb1afSSean Eric Fagan mtx_unlock(&ses->swcr_lock); 1445091d81d1SSam Leffler crypto_done(crp); 1446c0341432SJohn Baldwin return (0); 1447091d81d1SSam Leffler } 1448091d81d1SSam Leffler 1449091d81d1SSam Leffler static void 14503f147ab2SWarner Losh swcr_identify(driver_t *drv, device_t parent) 1451091d81d1SSam Leffler { 14526810ad6fSSam Leffler /* NB: order 10 is so we get attached after h/w devices */ 14536810ad6fSSam Leffler if (device_find_child(parent, "cryptosoft", -1) == NULL && 145486c585d9SMarius Strobl BUS_ADD_CHILD(parent, 10, "cryptosoft", 0) == 0) 14556810ad6fSSam Leffler panic("cryptosoft: could not attach"); 14566810ad6fSSam Leffler } 1457f6c4bc3bSPawel Jakub Dawidek 14586810ad6fSSam Leffler static int 14596810ad6fSSam Leffler swcr_probe(device_t dev) 14606810ad6fSSam Leffler { 14616810ad6fSSam Leffler device_set_desc(dev, "software crypto"); 146286c585d9SMarius Strobl return (BUS_PROBE_NOWILDCARD); 14636810ad6fSSam Leffler } 1464f6c4bc3bSPawel Jakub Dawidek 14656810ad6fSSam Leffler static int 14666810ad6fSSam Leffler swcr_attach(device_t dev) 14676810ad6fSSam Leffler { 14686810ad6fSSam Leffler 14699ebbebe4SConrad Meyer swcr_id = crypto_get_driverid(dev, sizeof(struct swcr_session), 14706810ad6fSSam Leffler CRYPTOCAP_F_SOFTWARE | CRYPTOCAP_F_SYNC); 14716810ad6fSSam Leffler if (swcr_id < 0) { 14726810ad6fSSam Leffler device_printf(dev, "cannot initialize!"); 1473c0341432SJohn Baldwin return (ENXIO); 14746810ad6fSSam Leffler } 14756810ad6fSSam Leffler 1476c0341432SJohn Baldwin return (0); 1477091d81d1SSam Leffler } 14784b465da2SPawel Jakub Dawidek 14793f147ab2SWarner Losh static int 14806810ad6fSSam Leffler swcr_detach(device_t dev) 14814b465da2SPawel Jakub Dawidek { 14826810ad6fSSam Leffler crypto_unregister_all(swcr_id); 14833f147ab2SWarner Losh return 0; 14844b465da2SPawel Jakub Dawidek } 14856810ad6fSSam Leffler 14866810ad6fSSam Leffler static device_method_t swcr_methods[] = { 14876810ad6fSSam Leffler DEVMETHOD(device_identify, swcr_identify), 14886810ad6fSSam Leffler DEVMETHOD(device_probe, swcr_probe), 14896810ad6fSSam Leffler DEVMETHOD(device_attach, swcr_attach), 14906810ad6fSSam Leffler DEVMETHOD(device_detach, swcr_detach), 14916810ad6fSSam Leffler 1492c0341432SJohn Baldwin DEVMETHOD(cryptodev_probesession, swcr_probesession), 14936810ad6fSSam Leffler DEVMETHOD(cryptodev_newsession, swcr_newsession), 14946810ad6fSSam Leffler DEVMETHOD(cryptodev_freesession,swcr_freesession), 14956810ad6fSSam Leffler DEVMETHOD(cryptodev_process, swcr_process), 14966810ad6fSSam Leffler 14976810ad6fSSam Leffler {0, 0}, 14986810ad6fSSam Leffler }; 14996810ad6fSSam Leffler 15006810ad6fSSam Leffler static driver_t swcr_driver = { 15016810ad6fSSam Leffler "cryptosoft", 15026810ad6fSSam Leffler swcr_methods, 15036810ad6fSSam Leffler 0, /* NB: no softc */ 15046810ad6fSSam Leffler }; 15056810ad6fSSam Leffler static devclass_t swcr_devclass; 15066810ad6fSSam Leffler 15076810ad6fSSam Leffler /* 15086810ad6fSSam Leffler * NB: We explicitly reference the crypto module so we 15096810ad6fSSam Leffler * get the necessary ordering when built as a loadable 15106810ad6fSSam Leffler * module. This is required because we bundle the crypto 15116810ad6fSSam Leffler * module code together with the cryptosoft driver (otherwise 15126810ad6fSSam Leffler * normal module dependencies would handle things). 15136810ad6fSSam Leffler */ 15146810ad6fSSam Leffler extern int crypto_modevent(struct module *, int, void *); 15156810ad6fSSam Leffler /* XXX where to attach */ 15166810ad6fSSam Leffler DRIVER_MODULE(cryptosoft, nexus, swcr_driver, swcr_devclass, crypto_modevent,0); 15176810ad6fSSam Leffler MODULE_VERSION(cryptosoft, 1); 15186810ad6fSSam Leffler MODULE_DEPEND(cryptosoft, crypto, 1, 1, 1); 1519