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| 1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. | 1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| 2 * Use of this source code is governed by a BSD-style license that can be | 2 * Use of this source code is governed by a BSD-style license that can be |
| 3 * found in the LICENSE file. | 3 * found in the LICENSE file. |
| 4 */ | 4 */ |
| 5 | 5 |
| 6 /* Implementation of RSA signature verification which uses a pre-processed | 6 /* Implementation of RSA signature verification which uses a pre-processed |
| 7 * key for computation. The code extends Android's RSA verification code to | 7 * key for computation. The code extends Android's RSA verification code to |
| 8 * support multiple RSA key lengths and hash digest algorithms. | 8 * support multiple RSA key lengths and hash digest algorithms. |
| 9 */ | 9 */ |
| 10 | 10 |
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| 120 } | 120 } |
| 121 | 121 |
| 122 Free(a); | 122 Free(a); |
| 123 Free(aR); | 123 Free(aR); |
| 124 Free(aaR); | 124 Free(aaR); |
| 125 } | 125 } |
| 126 | 126 |
| 127 /* Verify a RSA PKCS1.5 signature against an expected hash. | 127 /* Verify a RSA PKCS1.5 signature against an expected hash. |
| 128 * Returns 0 on failure, 1 on success. | 128 * Returns 0 on failure, 1 on success. |
| 129 */ | 129 */ |
| 130 int RSA_verify(const RSAPublicKey *key, | 130 int RSAVerify(const RSAPublicKey *key, |
| 131 const uint8_t *sig, | 131 const uint8_t *sig, |
| 132 const int sig_len, | 132 const int sig_len, |
| 133 const uint8_t sig_type, | 133 const uint8_t sig_type, |
| 134 const uint8_t *hash) { | 134 const uint8_t *hash) { |
| 135 int i; | 135 int i; |
| 136 uint8_t* buf; | 136 uint8_t* buf; |
| 137 const uint8_t* padding; | 137 const uint8_t* padding; |
| 138 int success = 1; | 138 int success = 1; |
| 139 | 139 |
| 140 if (sig_len != (key->len * sizeof(uint32_t))) { | 140 if (sig_len != (key->len * sizeof(uint32_t))) { |
| 141 fprintf(stderr, "Signature is of incorrect length!\n"); | 141 fprintf(stderr, "Signature is of incorrect length!\n"); |
| 142 return 0; | 142 return 0; |
| 143 } | 143 } |
| 144 | 144 |
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| 181 buf[i]); | 181 buf[i]); |
| 182 #endif | 182 #endif |
| 183 success = 0; | 183 success = 0; |
| 184 } | 184 } |
| 185 } | 185 } |
| 186 | 186 |
| 187 Free(buf); | 187 Free(buf); |
| 188 | 188 |
| 189 return success; | 189 return success; |
| 190 } | 190 } |
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