platform_system_core/include/mincrypt/rsa.h
Doug Zongker 515e1639ef mincrypt: support SHA-256 hash algorithm
- adds a library to compute the SHA-256 hash

- updates the RSA verifier to take an argument specifying either SHA-1
  or SHA-256

- updates DumpPublicKey to with new "key" version numbers for
  specifying SHA-256

- adds new argument to adb auth code to maintain existing behavior

Change-Id: I5b1406cf57c2b8993f6032eda3e29139f7740839
2013-04-10 14:33:31 -07:00

58 lines
2.3 KiB
C

/* rsa.h
**
** Copyright 2008, The Android Open Source Project
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** * Neither the name of Google Inc. nor the names of its contributors may
** be used to endorse or promote products derived from this software
** without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
** EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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*/
#ifndef _EMBEDDED_RSA_H_
#define _EMBEDDED_RSA_H_
#include <inttypes.h>
#ifdef __cplusplus
extern "C" {
#endif
#define RSANUMBYTES 256 /* 2048 bit key length */
#define RSANUMWORDS (RSANUMBYTES / sizeof(uint32_t))
typedef struct RSAPublicKey {
int len; /* Length of n[] in number of uint32_t */
uint32_t n0inv; /* -1 / n[0] mod 2^32 */
uint32_t n[RSANUMWORDS]; /* modulus as little endian array */
uint32_t rr[RSANUMWORDS]; /* R^2 as little endian array */
int exponent; /* 3 or 65537 */
} RSAPublicKey;
int RSA_verify(const RSAPublicKey *key,
const uint8_t* signature,
const int len,
const uint8_t* hash,
const int hash_len);
#ifdef __cplusplus
}
#endif
#endif