blob: c2dcf4715c3440625a42c84992c832abf4eb72a5
| 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person |
| 5 | * obtaining a copy of this software and associated documentation |
| 6 | * files (the "Software"), to deal in the Software without |
| 7 | * restriction, including without limitation the rights to use, copy, |
| 8 | * modify, merge, publish, distribute, sublicense, and/or sell copies |
| 9 | * of the Software, and to permit persons to whom the Software is |
| 10 | * furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be |
| 13 | * included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 18 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 19 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 20 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 21 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | /* Copyright (c) 2011 The Chromium OS Authors. All rights reserved. |
| 26 | * Use of this source code is governed by a BSD-style license that can be |
| 27 | * found in the LICENSE file. |
| 28 | */ |
| 29 | |
| 30 | #ifdef AVB_INSIDE_LIBAVB_H |
| 31 | #error "You can't include avb_rsa.h in the public header libavb.h." |
| 32 | #endif |
| 33 | |
| 34 | #ifndef AVB_COMPILATION |
| 35 | #error "Never include this file, it may only be used from internal avb code." |
| 36 | #endif |
| 37 | |
| 38 | #ifndef AVB_RSA_H_ |
| 39 | #define AVB_RSA_H_ |
| 40 | |
| 41 | #ifdef __cplusplus |
| 42 | extern "C" { |
| 43 | #endif |
| 44 | |
| 45 | #include "avb_crypto.h" |
| 46 | #include "avb_sysdeps.h" |
| 47 | |
| 48 | /* Using the key given by |key|, verify a RSA signature |sig| of |
| 49 | * length |sig_num_bytes| against an expected |hash| of length |
| 50 | * |hash_num_bytes|. The padding to expect must be passed in using |
| 51 | * |padding| of length |padding_num_bytes|. |
| 52 | * |
| 53 | * The data in |key| must match the format defined in |
| 54 | * |AvbRSAPublicKeyHeader|, including the two large numbers |
| 55 | * following. The |key_num_bytes| must be the size of the entire |
| 56 | * serialized key. |
| 57 | * |
| 58 | * Returns false if verification fails, true otherwise. |
| 59 | */ |
| 60 | bool avb_rsa_verify(const uint8_t* key, |
| 61 | size_t key_num_bytes, |
| 62 | const uint8_t* sig, |
| 63 | size_t sig_num_bytes, |
| 64 | const uint8_t* hash, |
| 65 | size_t hash_num_bytes, |
| 66 | const uint8_t* padding, |
| 67 | size_t padding_num_bytes) AVB_ATTR_WARN_UNUSED_RESULT; |
| 68 | |
| 69 | #ifdef __cplusplus |
| 70 | } |
| 71 | #endif |
| 72 | |
| 73 | #endif /* AVB_RSA_H_ */ |
| 74 |