65 lines
2.6 KiB
C
65 lines
2.6 KiB
C
|
/*
|
||
|
|
* libjingle
|
||
|
|
* Copyright 2004--2012, Google Inc.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions are met:
|
||
|
|
*
|
||
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
||
|
|
* this list of conditions and the following disclaimer.
|
||
|
|
* 2. 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.
|
||
|
|
* 3. The name of the author may not be used to endorse or promote products
|
||
|
|
* derived from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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;
|
||
|
|
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||
|
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||
|
|
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef TALK_BASE_OPENSSLDIGEST_H_
|
||
|
|
#define TALK_BASE_OPENSSLDIGEST_H_
|
||
|
|
|
||
|
|
#include <openssl/evp.h>
|
||
|
|
|
||
|
|
#include "talk/base/messagedigest.h"
|
||
|
|
|
||
|
|
namespace talk_base {
|
||
|
|
|
||
|
|
// An implementation of the digest class that uses OpenSSL.
|
||
|
|
class OpenSSLDigest : public MessageDigest {
|
||
|
|
public:
|
||
|
|
// Creates an OpenSSLDigest with |algorithm| as the hash algorithm.
|
||
|
|
explicit OpenSSLDigest(const std::string& algorithm);
|
||
|
|
~OpenSSLDigest();
|
||
|
|
// Returns the digest output size (e.g. 16 bytes for MD5).
|
||
|
|
virtual size_t Size() const;
|
||
|
|
// Updates the digest with |len| bytes from |buf|.
|
||
|
|
virtual void Update(const void* buf, size_t len);
|
||
|
|
// Outputs the digest value to |buf| with length |len|.
|
||
|
|
virtual size_t Finish(void* buf, size_t len);
|
||
|
|
|
||
|
|
// Helper function to look up a digest.
|
||
|
|
static bool GetDigestEVP(const std::string &algorithm,
|
||
|
|
const EVP_MD** md);
|
||
|
|
// Helper function to get the length of a digest.
|
||
|
|
static bool GetDigestSize(const std::string &algorithm,
|
||
|
|
size_t* len);
|
||
|
|
|
||
|
|
private:
|
||
|
|
EVP_MD_CTX ctx_;
|
||
|
|
const EVP_MD* md_;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace talk_base
|
||
|
|
|
||
|
|
#endif // TALK_BASE_OPENSSLDIGEST_H_
|