1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Copyright (C) 2016 The Android Open Source Project 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Permission is hereby granted, free of charge, to any person 5*4882a593Smuzhiyun * obtaining a copy of this software and associated documentation 6*4882a593Smuzhiyun * files (the "Software"), to deal in the Software without 7*4882a593Smuzhiyun * restriction, including without limitation the rights to use, copy, 8*4882a593Smuzhiyun * modify, merge, publish, distribute, sublicense, and/or sell copies 9*4882a593Smuzhiyun * of the Software, and to permit persons to whom the Software is 10*4882a593Smuzhiyun * furnished to do so, subject to the following conditions: 11*4882a593Smuzhiyun * 12*4882a593Smuzhiyun * The above copyright notice and this permission notice shall be 13*4882a593Smuzhiyun * included in all copies or substantial portions of the Software. 14*4882a593Smuzhiyun * 15*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16*4882a593Smuzhiyun * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17*4882a593Smuzhiyun * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18*4882a593Smuzhiyun * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 19*4882a593Smuzhiyun * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 20*4882a593Smuzhiyun * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21*4882a593Smuzhiyun * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22*4882a593Smuzhiyun * SOFTWARE. 23*4882a593Smuzhiyun */ 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun /* Copyright (c) 2011 The Chromium OS Authors. All rights reserved. 26*4882a593Smuzhiyun * Use of this source code is governed by a BSD-style license that can be 27*4882a593Smuzhiyun * found in the LICENSE file. 28*4882a593Smuzhiyun */ 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun /* 31*4882a593Smuzhiyun #ifdef AVB_INSIDE_LIBAVB_H 32*4882a593Smuzhiyun #error "You can't include avb_rsa.h in the public header libavb.h." 33*4882a593Smuzhiyun #endif 34*4882a593Smuzhiyun */ 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun /* 37*4882a593Smuzhiyun #ifndef AVB_COMPILATION 38*4882a593Smuzhiyun #error "Never include this file, it may only be used from internal avb code." 39*4882a593Smuzhiyun #endif 40*4882a593Smuzhiyun */ 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun #ifndef AVB_RSA_H_ 43*4882a593Smuzhiyun #define AVB_RSA_H_ 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun #ifdef __cplusplus 46*4882a593Smuzhiyun extern "C" { 47*4882a593Smuzhiyun #endif 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun #include <android_avb/avb_crypto.h> 50*4882a593Smuzhiyun #include <android_avb/avb_sysdeps.h> 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun /* Using the key given by |key|, verify a RSA signature |sig| of 53*4882a593Smuzhiyun * length |sig_num_bytes| against an expected |hash| of length 54*4882a593Smuzhiyun * |hash_num_bytes|. The padding to expect must be passed in using 55*4882a593Smuzhiyun * |padding| of length |padding_num_bytes|. 56*4882a593Smuzhiyun * 57*4882a593Smuzhiyun * The data in |key| must match the format defined in 58*4882a593Smuzhiyun * |AvbRSAPublicKeyHeader|, including the two large numbers 59*4882a593Smuzhiyun * following. The |key_num_bytes| must be the size of the entire 60*4882a593Smuzhiyun * serialized key. 61*4882a593Smuzhiyun * 62*4882a593Smuzhiyun * Returns false if verification fails, true otherwise. 63*4882a593Smuzhiyun */ 64*4882a593Smuzhiyun bool avb_rsa_verify(const uint8_t* key, 65*4882a593Smuzhiyun size_t key_num_bytes, 66*4882a593Smuzhiyun const uint8_t* sig, 67*4882a593Smuzhiyun size_t sig_num_bytes, 68*4882a593Smuzhiyun const uint8_t* hash, 69*4882a593Smuzhiyun size_t hash_num_bytes, 70*4882a593Smuzhiyun const uint8_t* padding, 71*4882a593Smuzhiyun size_t padding_num_bytes) AVB_ATTR_WARN_UNUSED_RESULT; 72*4882a593Smuzhiyun 73*4882a593Smuzhiyun #ifdef __cplusplus 74*4882a593Smuzhiyun } 75*4882a593Smuzhiyun #endif 76*4882a593Smuzhiyun 77*4882a593Smuzhiyun #endif /* AVB_RSA_H_ */ 78