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/*
* libjingle
* Copyright 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_SHA1DIGEST_H_
#define TALK_BASE_SHA1DIGEST_H_
#include "talk/base/messagedigest.h"
#include "talk/base/sha1.h"
namespace talk_base {
// A simple wrapper for our SHA-1 implementation.
class Sha1Digest : public MessageDigest {
public:
enum { kSize = SHA1_DIGEST_SIZE };
Sha1Digest() {
SHA1Init(&ctx_);
}
virtual size_t Size() const {
return kSize;
}
virtual void Update(const void* buf, size_t len) {
SHA1Update(&ctx_, static_cast<const uint8*>(buf), len);
}
virtual size_t Finish(void* buf, size_t len) {
if (len < kSize) {
return 0;
}
SHA1Final(&ctx_, static_cast<uint8*>(buf));
SHA1Init(&ctx_); // Reset for next use.
return kSize;
}
private:
SHA1_CTX ctx_;
};
} // namespace talk_base
#endif // TALK_BASE_SHA1DIGEST_H_
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