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Side by Side Diff: src/platform/vboot_reference/crypto/rsa.c

Issue 660261: Refactor siglen_map[] to store key size in bytes instead of 32-bit words. (Closed)
Patch Set: Created 10 years, 9 months ago
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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
(...skipping 129 matching lines...) Expand 10 before | Expand all | Expand 10 after
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
145 if (sig_type >= kNumAlgorithms) { 145 if (sig_type >= kNumAlgorithms) {
146 fprintf(stderr, "Invalid signature type!\n"); 146 fprintf(stderr, "Invalid signature type!\n");
147 return 0; 147 return 0;
148 } 148 }
149 149
150 if (key->len != siglen_map[sig_type]) { 150 if (key->len != siglen_map[sig_type] / sizeof(uint32_t)) {
151 fprintf(stderr, "Wrong key passed in!\n"); 151 fprintf(stderr, "Wrong key passed in!\n");
152 return 0; 152 return 0;
153 } 153 }
154 154
155 buf = (uint8_t*) Malloc(sig_len); 155 buf = (uint8_t*) Malloc(sig_len);
156 Memcpy(buf, sig, sig_len); 156 Memcpy(buf, sig, sig_len);
157 157
158 modpowF4(key, buf); 158 modpowF4(key, buf);
159 159
160 /* Determine padding to use depending on the signature type. */ 160 /* Determine padding to use depending on the signature type. */
(...skipping 20 matching lines...) Expand all
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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