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| 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 | |
| 3 * found in the LICENSE file. | |
| 4 * | |
| 5 * Some utility functions for use with RSA signature verification. | |
| 6 */ | |
| 7 | |
| 8 #ifndef VBOOT_REFERENCE_RSA_UTILITY_H_ | |
| 9 #define VBOOT_REFERENCE_RSA_UTILITY_H_ | |
| 10 | |
| 11 #include "rsa.h" | |
| 12 | |
| 13 /* Returns the size of a pre-processed RSA public key in bytes with algorithm | |
| 14 * [algorithm]. */ | |
| 15 int RSAProcessedKeySize(int algorithm); | |
| 16 | |
| 17 /* Allocate a new RSAPublicKey structure and initialize its pointer fields to | |
| 18 * NULL */ | |
| 19 RSAPublicKey* RSAPublicKeyNew(void); | |
| 20 | |
| 21 /* Deep free the contents of [key]. */ | |
| 22 void RSAPublicKeyFree(RSAPublicKey* key); | |
| 23 | |
| 24 /* Create a RSAPublic key structure from binary blob [buf] of length | |
| 25 * [len]. | |
| 26 * | |
| 27 * Caller owns the returned key and must free it. | |
| 28 */ | |
| 29 RSAPublicKey* RSAPublicKeyFromBuf(const uint8_t* buf, int len); | |
| 30 | |
| 31 /* Perform RSA signature verification on [buf] of length [len] against expected | |
| 32 * signature [sig] using signature algorithm [algorithm]. The public key used | |
| 33 * for verification can either be in the form of a pre-process key blob | |
| 34 * [key_blob] or RSAPublicKey structure [key]. One of [key_blob] or [key] must | |
| 35 * be non-NULL, and the other NULL or the function will fail. | |
| 36 * | |
| 37 * Returns 1 on verification success, 0 on verification failure or invalid | |
| 38 * arguments. | |
| 39 * | |
| 40 * Note: This function is for use in the firmware and assumes all pointers point | |
| 41 * to areas in the memory of the right size. | |
| 42 * | |
| 43 */ | |
| 44 int RSAVerifyBinary_f(const uint8_t* key_blob, | |
| 45 const RSAPublicKey* key, | |
| 46 const uint8_t* buf, | |
| 47 uint64_t len, | |
| 48 const uint8_t* sig, | |
| 49 int algorithm); | |
| 50 | |
| 51 /* Version of RSAVerifyBinary_f() where instead of the raw binary blob | |
| 52 * of data, its digest is passed as the argument. */ | |
| 53 int RSAVerifyBinaryWithDigest_f(const uint8_t* key_blob, | |
| 54 const RSAPublicKey* key, | |
| 55 const uint8_t* digest, | |
| 56 const uint8_t* sig, | |
| 57 int algorithm); | |
| 58 #endif /* VBOOT_REFERENCE_RSA_UTILITY_H_ */ | |
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Chromium Code Reviews
Issue 1574005:
VBoot Reference: Refactor Part 2 - Crypto Libraries (Closed)
