1 /* $OpenBSD: m_md5_sha1.c,v 1.2 2018/08/10 17:30:29 jsing Exp $ */ 2 /* 3 * Copyright (c) 2017 Joel Sing <jsing@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <openssl/evp.h> 19 #include <openssl/md5.h> 20 #include <openssl/objects.h> 21 #include <openssl/sha.h> 22 23 #ifndef OPENSSL_NO_RSA 24 #include <openssl/rsa.h> 25 #endif 26 27 struct md5_sha1_ctx { 28 MD5_CTX md5; 29 SHA_CTX sha1; 30 }; 31 32 static int 33 md5_sha1_init(EVP_MD_CTX *ctx) 34 { 35 struct md5_sha1_ctx *mdctx = ctx->md_data; 36 37 if (!MD5_Init(&mdctx->md5)) 38 return 0; 39 if (!SHA1_Init(&mdctx->sha1)) 40 return 0; 41 42 return 1; 43 } 44 45 static int 46 md5_sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count) 47 { 48 struct md5_sha1_ctx *mdctx = ctx->md_data; 49 50 if (!MD5_Update(&mdctx->md5, data, count)) 51 return 0; 52 if (!SHA1_Update(&mdctx->sha1, data, count)) 53 return 0; 54 55 return 1; 56 } 57 58 static int 59 md5_sha1_final(EVP_MD_CTX *ctx, unsigned char *out) 60 { 61 struct md5_sha1_ctx *mdctx = ctx->md_data; 62 63 if (!MD5_Final(out, &mdctx->md5)) 64 return 0; 65 if (!SHA1_Final(out + MD5_DIGEST_LENGTH, &mdctx->sha1)) 66 return 0; 67 68 return 1; 69 } 70 71 static const EVP_MD md5_sha1_md = { 72 .type = NID_md5_sha1, 73 .pkey_type = NID_md5_sha1, 74 .md_size = MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH, 75 .flags = 0, 76 .init = md5_sha1_init, 77 .update = md5_sha1_update, 78 .final = md5_sha1_final, 79 .block_size = MD5_CBLOCK, /* MD5_CBLOCK == SHA_CBLOCK */ 80 .ctx_size = sizeof(EVP_MD *) + sizeof(struct md5_sha1_ctx), 81 #ifndef OPENSSL_NO_RSA 82 .sign = (evp_sign_method *)RSA_sign, 83 .verify = (evp_verify_method *)RSA_verify, 84 .required_pkey_type = { 85 EVP_PKEY_RSA, EVP_PKEY_RSA2, 0, 0, 86 }, 87 #endif 88 }; 89 90 const EVP_MD * 91 EVP_md5_sha1(void) 92 { 93 return &md5_sha1_md; 94 } 95