blob: ac0cd11b5b3c202b5fe0634309118b56f60b3814 [file] [log] [blame]
/* 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.
#include <stdint.h>
/* Returns a buffer with DigestInfo (which depends on [algorithm])
* prepended to [digest].
uint8_t* PrependDigestInfo(enum vb2_hash_algorithm hash_alg, 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);