Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 2 | * project 1999-2004. |
| 3 | */ |
| 4 | /* ==================================================================== |
| 5 | * Copyright (c) 1999 The OpenSSL Project. All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in |
| 16 | * the documentation and/or other materials provided with the |
| 17 | * distribution. |
| 18 | * |
| 19 | * 3. All advertising materials mentioning features or use of this |
| 20 | * software must display the following acknowledgment: |
| 21 | * "This product includes software developed by the OpenSSL Project |
| 22 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| 23 | * |
| 24 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 25 | * endorse or promote products derived from this software without |
| 26 | * prior written permission. For written permission, please contact |
| 27 | * licensing@OpenSSL.org. |
| 28 | * |
| 29 | * 5. Products derived from this software may not be called "OpenSSL" |
| 30 | * nor may "OpenSSL" appear in their names without prior written |
| 31 | * permission of the OpenSSL Project. |
| 32 | * |
| 33 | * 6. Redistributions of any form whatsoever must retain the following |
| 34 | * acknowledgment: |
| 35 | * "This product includes software developed by the OpenSSL Project |
| 36 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| 37 | * |
| 38 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 39 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 40 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 41 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 42 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 43 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 44 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 45 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 46 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 47 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 48 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 49 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 50 | * ==================================================================== |
| 51 | * |
| 52 | * This product includes cryptographic software written by Eric Young |
| 53 | * (eay@cryptsoft.com). This product includes software written by Tim |
| 54 | * Hudson (tjh@cryptsoft.com). */ |
| 55 | |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 56 | #include <openssl/pkcs8.h> |
| 57 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 58 | #include <limits.h> |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 59 | #include <string.h> |
| 60 | |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 61 | #include <openssl/bytestring.h> |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 62 | #include <openssl/cipher.h> |
| 63 | #include <openssl/err.h> |
| 64 | #include <openssl/mem.h> |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 65 | #include <openssl/nid.h> |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 66 | #include <openssl/rand.h> |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 67 | |
| 68 | #include "internal.h" |
Robert Sloan | 69939df | 2017-01-09 10:53:07 -0800 | [diff] [blame] | 69 | #include "../internal.h" |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 70 | |
| 71 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 72 | // 1.2.840.113549.1.5.12 |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 73 | static const uint8_t kPBKDF2[] = {0x2a, 0x86, 0x48, 0x86, 0xf7, |
| 74 | 0x0d, 0x01, 0x05, 0x0c}; |
| 75 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 76 | // 1.2.840.113549.1.5.13 |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 77 | static const uint8_t kPBES2[] = {0x2a, 0x86, 0x48, 0x86, 0xf7, |
| 78 | 0x0d, 0x01, 0x05, 0x0d}; |
| 79 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 80 | // 1.2.840.113549.2.7 |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 81 | static const uint8_t kHMACWithSHA1[] = {0x2a, 0x86, 0x48, 0x86, |
| 82 | 0xf7, 0x0d, 0x02, 0x07}; |
| 83 | |
| 84 | static const struct { |
| 85 | uint8_t oid[9]; |
| 86 | uint8_t oid_len; |
| 87 | int nid; |
| 88 | const EVP_CIPHER *(*cipher_func)(void); |
| 89 | } kCipherOIDs[] = { |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 90 | // 1.2.840.113549.3.2 |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 91 | {{0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x03, 0x02}, |
| 92 | 8, |
| 93 | NID_rc2_cbc, |
| 94 | &EVP_rc2_cbc}, |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 95 | // 1.2.840.113549.3.7 |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 96 | {{0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x03, 0x07}, |
| 97 | 8, |
| 98 | NID_des_ede3_cbc, |
| 99 | &EVP_des_ede3_cbc}, |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 100 | // 2.16.840.1.101.3.4.1.2 |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 101 | {{0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x01, 0x02}, |
| 102 | 9, |
| 103 | NID_aes_128_cbc, |
| 104 | &EVP_aes_128_cbc}, |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 105 | // 2.16.840.1.101.3.4.1.22 |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 106 | {{0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x01, 0x16}, |
| 107 | 9, |
| 108 | NID_aes_192_cbc, |
| 109 | &EVP_aes_192_cbc}, |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 110 | // 2.16.840.1.101.3.4.1.42 |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 111 | {{0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x01, 0x2a}, |
| 112 | 9, |
| 113 | NID_aes_256_cbc, |
| 114 | &EVP_aes_256_cbc}, |
| 115 | }; |
| 116 | |
| 117 | static const EVP_CIPHER *cbs_to_cipher(const CBS *cbs) { |
| 118 | for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kCipherOIDs); i++) { |
| 119 | if (CBS_mem_equal(cbs, kCipherOIDs[i].oid, kCipherOIDs[i].oid_len)) { |
| 120 | return kCipherOIDs[i].cipher_func(); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | return NULL; |
| 125 | } |
| 126 | |
| 127 | static int add_cipher_oid(CBB *out, int nid) { |
| 128 | for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kCipherOIDs); i++) { |
| 129 | if (kCipherOIDs[i].nid == nid) { |
| 130 | CBB child; |
| 131 | return CBB_add_asn1(out, &child, CBS_ASN1_OBJECT) && |
| 132 | CBB_add_bytes(&child, kCipherOIDs[i].oid, |
| 133 | kCipherOIDs[i].oid_len) && |
| 134 | CBB_flush(out); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_CIPHER); |
| 139 | return 0; |
| 140 | } |
| 141 | |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 142 | static int pkcs5_pbe2_cipher_init(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, |
Srinivas Paladugu | dd42a61 | 2019-08-09 19:30:39 +0000 | [diff] [blame^] | 143 | unsigned iterations, const char *pass, |
| 144 | size_t pass_len, const uint8_t *salt, |
| 145 | size_t salt_len, const uint8_t *iv, |
| 146 | size_t iv_len, int enc) { |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 147 | if (iv_len != EVP_CIPHER_iv_length(cipher)) { |
| 148 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_ERROR_SETTING_CIPHER_PARAMS); |
| 149 | return 0; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 150 | } |
| 151 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 152 | uint8_t key[EVP_MAX_KEY_LENGTH]; |
Srinivas Paladugu | dd42a61 | 2019-08-09 19:30:39 +0000 | [diff] [blame^] | 153 | int ret = PKCS5_PBKDF2_HMAC_SHA1(pass, pass_len, salt, salt_len, iterations, |
| 154 | EVP_CIPHER_key_length(cipher), key) && |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 155 | EVP_CipherInit_ex(ctx, cipher, NULL /* engine */, key, iv, enc); |
| 156 | OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH); |
| 157 | return ret; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 158 | } |
| 159 | |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 160 | int PKCS5_pbe2_encrypt_init(CBB *out, EVP_CIPHER_CTX *ctx, |
| 161 | const EVP_CIPHER *cipher, unsigned iterations, |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 162 | const char *pass, size_t pass_len, |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 163 | const uint8_t *salt, size_t salt_len) { |
| 164 | int cipher_nid = EVP_CIPHER_nid(cipher); |
| 165 | if (cipher_nid == NID_undef) { |
| 166 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER); |
| 167 | return 0; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 168 | } |
| 169 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 170 | // Generate a random IV. |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 171 | uint8_t iv[EVP_MAX_IV_LENGTH]; |
| 172 | if (!RAND_bytes(iv, EVP_CIPHER_iv_length(cipher))) { |
| 173 | return 0; |
| 174 | } |
| 175 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 176 | // See RFC 2898, appendix A. |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 177 | CBB algorithm, oid, param, kdf, kdf_oid, kdf_param, salt_cbb, cipher_cbb, |
| 178 | iv_cbb; |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 179 | if (!CBB_add_asn1(out, &algorithm, CBS_ASN1_SEQUENCE) || |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 180 | !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) || |
| 181 | !CBB_add_bytes(&oid, kPBES2, sizeof(kPBES2)) || |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 182 | !CBB_add_asn1(&algorithm, ¶m, CBS_ASN1_SEQUENCE) || |
| 183 | !CBB_add_asn1(¶m, &kdf, CBS_ASN1_SEQUENCE) || |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 184 | !CBB_add_asn1(&kdf, &kdf_oid, CBS_ASN1_OBJECT) || |
| 185 | !CBB_add_bytes(&kdf_oid, kPBKDF2, sizeof(kPBKDF2)) || |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 186 | !CBB_add_asn1(&kdf, &kdf_param, CBS_ASN1_SEQUENCE) || |
| 187 | !CBB_add_asn1(&kdf_param, &salt_cbb, CBS_ASN1_OCTETSTRING) || |
| 188 | !CBB_add_bytes(&salt_cbb, salt, salt_len) || |
| 189 | !CBB_add_asn1_uint64(&kdf_param, iterations) || |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 190 | // Specify a key length for RC2. |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 191 | (cipher_nid == NID_rc2_cbc && |
| 192 | !CBB_add_asn1_uint64(&kdf_param, EVP_CIPHER_key_length(cipher))) || |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 193 | // Omit the PRF. We use the default hmacWithSHA1. |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 194 | !CBB_add_asn1(¶m, &cipher_cbb, CBS_ASN1_SEQUENCE) || |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 195 | !add_cipher_oid(&cipher_cbb, cipher_nid) || |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 196 | // RFC 2898 says RC2-CBC and RC5-CBC-Pad use a SEQUENCE with version and |
| 197 | // IV, but OpenSSL always uses an OCTET STRING IV, so we do the same. |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 198 | !CBB_add_asn1(&cipher_cbb, &iv_cbb, CBS_ASN1_OCTETSTRING) || |
| 199 | !CBB_add_bytes(&iv_cbb, iv, EVP_CIPHER_iv_length(cipher)) || |
| 200 | !CBB_flush(out)) { |
| 201 | return 0; |
| 202 | } |
| 203 | |
Srinivas Paladugu | dd42a61 | 2019-08-09 19:30:39 +0000 | [diff] [blame^] | 204 | return pkcs5_pbe2_cipher_init(ctx, cipher, iterations, pass, pass_len, salt, |
| 205 | salt_len, iv, EVP_CIPHER_iv_length(cipher), |
| 206 | 1 /* encrypt */); |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 207 | } |
| 208 | |
| 209 | int PKCS5_pbe2_decrypt_init(const struct pbe_suite *suite, EVP_CIPHER_CTX *ctx, |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 210 | const char *pass, size_t pass_len, CBS *param) { |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 211 | CBS pbe_param, kdf, kdf_obj, enc_scheme, enc_obj; |
| 212 | if (!CBS_get_asn1(param, &pbe_param, CBS_ASN1_SEQUENCE) || |
| 213 | CBS_len(param) != 0 || |
| 214 | !CBS_get_asn1(&pbe_param, &kdf, CBS_ASN1_SEQUENCE) || |
| 215 | !CBS_get_asn1(&pbe_param, &enc_scheme, CBS_ASN1_SEQUENCE) || |
| 216 | CBS_len(&pbe_param) != 0 || |
| 217 | !CBS_get_asn1(&kdf, &kdf_obj, CBS_ASN1_OBJECT) || |
| 218 | !CBS_get_asn1(&enc_scheme, &enc_obj, CBS_ASN1_OBJECT)) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 219 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR); |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 220 | return 0; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 221 | } |
| 222 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 223 | // Only PBKDF2 is supported. |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 224 | if (!CBS_mem_equal(&kdf_obj, kPBKDF2, sizeof(kPBKDF2))) { |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 225 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION); |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 226 | return 0; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 227 | } |
| 228 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 229 | // See if we recognise the encryption algorithm. |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 230 | const EVP_CIPHER *cipher = cbs_to_cipher(&enc_obj); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 231 | if (cipher == NULL) { |
| 232 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_CIPHER); |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 233 | return 0; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 234 | } |
| 235 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 236 | // Parse the KDF parameters. See RFC 8018, appendix A.2. |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 237 | CBS pbkdf2_params, salt; |
| 238 | uint64_t iterations; |
| 239 | if (!CBS_get_asn1(&kdf, &pbkdf2_params, CBS_ASN1_SEQUENCE) || |
| 240 | CBS_len(&kdf) != 0 || |
| 241 | !CBS_get_asn1(&pbkdf2_params, &salt, CBS_ASN1_OCTETSTRING) || |
| 242 | !CBS_get_asn1_uint64(&pbkdf2_params, &iterations)) { |
| 243 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR); |
| 244 | return 0; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 245 | } |
| 246 | |
Robert Sloan | d9e572d | 2018-08-27 12:27:00 -0700 | [diff] [blame] | 247 | if (!pkcs12_iterations_acceptable(iterations)) { |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 248 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_ITERATION_COUNT); |
| 249 | return 0; |
| 250 | } |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 251 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 252 | // The optional keyLength parameter, if present, must match the key length of |
| 253 | // the cipher. |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 254 | if (CBS_peek_asn1_tag(&pbkdf2_params, CBS_ASN1_INTEGER)) { |
| 255 | uint64_t key_len; |
| 256 | if (!CBS_get_asn1_uint64(&pbkdf2_params, &key_len)) { |
| 257 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR); |
| 258 | return 0; |
| 259 | } |
| 260 | |
| 261 | if (key_len != EVP_CIPHER_key_length(cipher)) { |
| 262 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_KEYLENGTH); |
| 263 | return 0; |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | if (CBS_len(&pbkdf2_params) != 0) { |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 268 | CBS alg_id, prf; |
| 269 | if (!CBS_get_asn1(&pbkdf2_params, &alg_id, CBS_ASN1_SEQUENCE) || |
| 270 | !CBS_get_asn1(&alg_id, &prf, CBS_ASN1_OBJECT) || |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 271 | CBS_len(&pbkdf2_params) != 0) { |
| 272 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR); |
| 273 | return 0; |
| 274 | } |
| 275 | |
Srinivas Paladugu | dd42a61 | 2019-08-09 19:30:39 +0000 | [diff] [blame^] | 276 | // We only support hmacWithSHA1. It is the DEFAULT, so DER requires it be |
| 277 | // omitted, but we match OpenSSL in tolerating it being present. |
| 278 | if (!CBS_mem_equal(&prf, kHMACWithSHA1, sizeof(kHMACWithSHA1))) { |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 279 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_PRF); |
| 280 | return 0; |
| 281 | } |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 282 | |
Srinivas Paladugu | dd42a61 | 2019-08-09 19:30:39 +0000 | [diff] [blame^] | 283 | // hmacWithSHA1 has a NULL parameter. |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 284 | CBS null; |
| 285 | if (!CBS_get_asn1(&alg_id, &null, CBS_ASN1_NULL) || |
| 286 | CBS_len(&null) != 0 || |
| 287 | CBS_len(&alg_id) != 0) { |
| 288 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_DECODE_ERROR); |
| 289 | return 0; |
| 290 | } |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 291 | } |
| 292 | |
Robert Sloan | 8f860b1 | 2017-08-28 07:37:06 -0700 | [diff] [blame] | 293 | // Parse the encryption scheme parameters. Note OpenSSL does not match the |
| 294 | // specification. Per RFC 2898, this should depend on the encryption scheme. |
| 295 | // In particular, RC2-CBC uses a SEQUENCE with version and IV. We align with |
| 296 | // OpenSSL. |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 297 | CBS iv; |
| 298 | if (!CBS_get_asn1(&enc_scheme, &iv, CBS_ASN1_OCTETSTRING) || |
| 299 | CBS_len(&enc_scheme) != 0) { |
| 300 | OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_UNSUPPORTED_PRF); |
| 301 | return 0; |
| 302 | } |
| 303 | |
Srinivas Paladugu | dd42a61 | 2019-08-09 19:30:39 +0000 | [diff] [blame^] | 304 | return pkcs5_pbe2_cipher_init(ctx, cipher, (unsigned)iterations, pass, |
Robert Sloan | 6d0d00e | 2017-03-27 07:13:07 -0700 | [diff] [blame] | 305 | pass_len, CBS_data(&salt), CBS_len(&salt), |
Steven Valdez | b0b45c6 | 2017-01-17 16:23:54 -0500 | [diff] [blame] | 306 | CBS_data(&iv), CBS_len(&iv), 0 /* decrypt */); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 307 | } |