1/* rsa.h 2** 3** Copyright 2008, The Android Open Source Project 4** 5** Redistribution and use in source and binary forms, with or without 6** modification, are permitted provided that the following conditions are met: 7** * Redistributions of source code must retain the above copyright 8** notice, this list of conditions and the following disclaimer. 9** * Redistributions in binary form must reproduce the above copyright 10** notice, this list of conditions and the following disclaimer in the 11** documentation and/or other materials provided with the distribution. 12** * Neither the name of Google Inc. nor the names of its contributors may 13** be used to endorse or promote products derived from this software 14** without specific prior written permission. 15** 16** THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR 17** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19** EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26*/ 27 28#ifndef CONSTRAINEDCRYPTO_RSA_H_ 29#define CONSTRAINEDCRYPTO_RSA_H_ 30 31#include <inttypes.h> 32 33#ifdef __cplusplus 34extern "C" { 35#endif 36 37#define RSANUMBYTES 256 /* 2048 bit key length */ 38#define RSANUMWORDS (RSANUMBYTES / sizeof(uint32_t)) 39 40typedef struct RSAPublicKey { 41 int len; /* Length of n[] in number of uint32_t */ 42 uint32_t n0inv; /* -1 / n[0] mod 2^32 */ 43 uint32_t n[RSANUMWORDS]; /* modulus as little endian array */ 44 uint32_t rr[RSANUMWORDS]; /* R^2 as little endian array */ 45 int exponent; /* 3 or 65537 */ 46} RSAPublicKey; 47 48int RSA_verify(const RSAPublicKey *key, 49 const uint8_t* signature, 50 const int len, 51 const uint8_t* hash, 52 const int hash_len); 53 54#ifdef __cplusplus 55} 56#endif 57 58#endif // CONSTRAINEDCRYPTO_RSA_H_ 59