Major refactoring of structures, with unit tests.

vboot_firmware/lib/cryptolib/include/rsa.h

 /* 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.
  */
 
 #ifndef VBOOT_REFERENCE_RSA_H_
 #define VBOOT_REFERENCE_RSA_H_
 
 #ifndef VBOOT_REFERENCE_CRYPTOLIB_H_
 #error "Do not include this file directly. Use cryptolib.h instead."
 #endif
 
 #include <stdint.h>
 
 #define RSA1024NUMBYTES 128  /* 1024 bit key length */
 #define RSA2048NUMBYTES 256  /* 2048 bit key length */
 #define RSA4096NUMBYTES 512  /* 4096 bit key length */
 #define RSA8192NUMBYTES 1024  /* 8192 bit key length */
 
 #define RSA1024NUMWORDS (RSA1024NUMBYTES / sizeof(uint32_t))
 #define RSA2048NUMWORDS (RSA2048NUMBYTES / sizeof(uint32_t))
 #define RSA4096NUMWORDS (RSA4096NUMBYTES / sizeof(uint32_t))
 #define RSA8192NUMWORDS (RSA8192NUMBYTES / sizeof(uint32_t))
 
 typedef struct RSAPublicKey {
-  int len;  /* Length of n[] in number of uint32_t */
+  uint32_t len;  /* Length of n[] in number of uint32_t */
   uint32_t n0inv;  /* -1 / n[0] mod 2^32 */
   uint32_t* n;  /* modulus as little endian array */
   uint32_t* rr; /* R^2 as little endian array */
+  int algorithm; /* Algorithm to use when verifying binaries with the key */
 } RSAPublicKey;
 
 /* Verify a RSA PKCS1.5 signature [sig] of [sig_type] and length [sig_len]
  * against an expected [hash] using [key]. Returns 0 on failure, 1 on success.
  */
 int RSAVerify(const RSAPublicKey *key,
               const uint8_t* sig,
               const int sig_len,
               const uint8_t sig_type,
               const uint8_t* hash);
@@ skipping 42 matching lines @@
 
 /* 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);
 
 
 #endif  /* VBOOT_REFERENCE_RSA_H_ */