1 /* 2 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 #pragma ident "%Z%%M% %I% %E% SMI" 7 8 /* 9 * lib/crypto/pbkdf2.c 10 * 11 * Copyright 2002 by the Massachusetts Institute of Technology. 12 * All Rights Reserved. 13 * 14 * Export of this software from the United States of America may 15 * require a specific license from the United States Government. 16 * It is the responsibility of any person or organization contemplating 17 * export to obtain such a license before exporting. 18 * 19 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 20 * distribute this software and its documentation for any purpose and 21 * without fee is hereby granted, provided that the above copyright 22 * notice appear in all copies and that both that copyright notice and 23 * this permission notice appear in supporting documentation, and that 24 * the name of M.I.T. not be used in advertising or publicity pertaining 25 * to distribution of the software without specific, written prior 26 * permission. Furthermore if you modify this software you must label 27 * your software as modified software and not distribute it in such a 28 * fashion that it might be confused with the original M.I.T. software. 29 * M.I.T. makes no representations about the suitability of 30 * this software for any purpose. It is provided "as is" without express 31 * or implied warranty. 32 * 33 * 34 * Implementation of PBKDF2 from RFC 2898. 35 * Not currently used; likely to be used when we get around to AES support. 36 */ 37 38 #ifndef _KERNEL 39 40 #include <ctype.h> 41 #include <k5-int.h> 42 #include <hash_provider.h> 43 44 /* 45 * MIT code ripped out, use PBKDF2 algorithm from PKCS#11 46 * provider. 47 */ 48 krb5_error_code 49 krb5int_pbkdf2_hmac_sha1( 50 krb5_context context, 51 const krb5_data *out, 52 unsigned long count, 53 krb5_enctype enctype, 54 const krb5_data *pass, const krb5_data *salt) 55 { 56 krb5_error_code ret = 0; 57 CK_RV rv; 58 CK_PKCS5_PBKD2_PARAMS params; 59 CK_MECHANISM mechanism; 60 CK_OBJECT_CLASS class = CKO_SECRET_KEY; 61 CK_ATTRIBUTE tmpl[3]; 62 CK_KEY_TYPE keytype; 63 CK_OBJECT_HANDLE hKey; 64 int attrs = 0; 65 66 mechanism.mechanism = CKM_PKCS5_PBKD2; 67 mechanism.pParameter = ¶ms; 68 mechanism.ulParameterLen = sizeof (params); 69 70 tmpl[attrs].type = CKA_CLASS; 71 tmpl[attrs].pValue = &class; 72 tmpl[attrs].ulValueLen = sizeof (class); 73 attrs++; 74 75 rv = get_key_type(enctype, &keytype); 76 if (rv != CKR_OK) 77 return (PKCS_ERR); 78 79 tmpl[attrs].type = CKA_KEY_TYPE; 80 tmpl[attrs].pValue = &keytype; 81 tmpl[attrs].ulValueLen = sizeof (keytype); 82 attrs++; 83 84 /* 85 * For DES key types, do not include the value len attr. 86 */ 87 if (out->length > 0 && 88 enctype != ENCTYPE_DES_CBC_CRC && 89 enctype != ENCTYPE_DES_CBC_MD5 && 90 enctype != ENCTYPE_DES_CBC_RAW && 91 enctype != ENCTYPE_DES_HMAC_SHA1 && 92 enctype != ENCTYPE_DES3_CBC_SHA1 && 93 enctype != ENCTYPE_DES3_CBC_RAW) { 94 tmpl[attrs].type = CKA_VALUE_LEN; 95 tmpl[attrs].pValue = (void *)&out->length; 96 tmpl[attrs].ulValueLen = out->length; 97 attrs++; 98 } 99 100 params.saltSource = CKZ_SALT_SPECIFIED; 101 params.pSaltSourceData = (void *)salt->data; 102 params.ulSaltSourceDataLen = salt->length; 103 params.iterations = count; 104 params.prf = CKP_PKCS5_PBKD2_HMAC_SHA1; 105 params.pPrfData = NULL; 106 params.ulPrfDataLen = 0; 107 params.pPassword = (CK_UTF8CHAR_PTR)pass->data; 108 params.ulPasswordLen = (CK_ULONG *)&pass->length; 109 110 rv = C_GenerateKey(krb_ctx_hSession(context), &mechanism, tmpl, 111 attrs, &hKey); 112 113 if (rv != CKR_OK) 114 ret = PKCS_ERR; 115 else { 116 /* Get the value from the key object. */ 117 tmpl[0].type = CKA_VALUE; 118 tmpl[0].pValue = out->data; 119 tmpl[0].ulValueLen = out->length; 120 rv = C_GetAttributeValue(krb_ctx_hSession(context), hKey, 121 tmpl, 1); 122 if (rv != CKR_OK) 123 ret = PKCS_ERR; 124 } 125 126 (void) C_DestroyObject(krb_ctx_hSession(context), hKey); 127 return (ret); 128 } 129 #endif /* !_KERNEL */ 130