| /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| * |
| * Some utility functions for use with RSA signature verification. |
| */ |
| |
| #ifndef VBOOT_REFERENCE_RSA_UTILITY_H_ |
| #define VBOOT_REFERENCE_RSA_UTILITY_H_ |
| |
| #include "rsa.h" |
| |
| /* Returns the size of a pre-processed RSA public key in bytes with algorithm |
| * [algorithm]. */ |
| int RSAProcessedKeySize(int algorithm); |
| |
| /* Allocate a new RSAPublicKey structure and initialize its pointer fields to |
| * NULL */ |
| RSAPublicKey* RSAPublicKeyNew(void); |
| |
| /* Deep free the contents of [key]. */ |
| void RSAPublicKeyFree(RSAPublicKey* key); |
| |
| /* Create a RSAPublic key structure from binary blob [buf] of length |
| * [len]. |
| * |
| * Caller owns the returned key and must free it. |
| */ |
| RSAPublicKey* RSAPublicKeyFromBuf(const uint8_t* buf, int len); |
| |
| /* Perform RSA signature verification on [buf] of length [len] against expected |
| * signature [sig] using signature algorithm [algorithm]. The public key used |
| * for verification can either be in the form of a pre-process key blob |
| * [key_blob] or RSAPublicKey structure [key]. One of [key_blob] or [key] must |
| * be non-NULL, and the other NULL or the function will fail. |
| * |
| * Returns 1 on verification success, 0 on verification failure or invalid |
| * arguments. |
| * |
| * Note: This function is for use in the firmware and assumes all pointers point |
| * to areas in the memory of the right size. |
| * |
| */ |
| int RSAVerifyBinary_f(const uint8_t* key_blob, |
| const RSAPublicKey* key, |
| const uint8_t* buf, |
| int len, |
| const uint8_t* sig, |
| int algorithm); |
| |
| #endif /* VBOOT_REFERENCE_RSA_UTILITY_H_ */ |