| /* 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_SIGNATURE_DIGEST_H_ |
| #define VBOOT_REFERENCE_SIGNATURE_DIGEST_H_ |
| |
| #include <stdint.h> |
| |
| /* Returns a buffer with DigestInfo (which depends on [algorithm]) |
| * prepended to [digest]. |
| */ |
| uint8_t* PrependDigestInfo(unsigned int algorithm, uint8_t* digest); |
| |
| /* Function that outputs the message digest of the contents of a buffer in a |
| * format that can be used as input to OpenSSL for an RSA signature. |
| * Needed until the stable OpenSSL release supports SHA-256/512 digests for |
| * RSA signatures. |
| * |
| * Returns DigestInfo || Digest where DigestInfo is the OID depending on the |
| * choice of the hash algorithm (see padding.c). Caller owns the returned |
| * pointer and must Free() it. |
| */ |
| uint8_t* SignatureDigest(const uint8_t* buf, uint64_t len, |
| unsigned int algorithm); |
| |
| /* Calculates the signature on a buffer [buf] of length [len] using |
| * the private RSA key file from [key_file] and signature algorithm |
| * [algorithm]. |
| * |
| * Returns the signature. Caller owns the buffer and must Free() it. |
| */ |
| uint8_t* SignatureBuf(const uint8_t* buf, uint64_t len, const char* key_file, |
| unsigned int algorithm); |
| #endif /* VBOOT_REFERENCE_SIGNATURE_DIGEST_H_ */ |
