[apple/javascriptcore.git] / wtf / SHA1.h

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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 COPYRIGHT
 * OWNER OR CONTRIBUTORS 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 WTF_SHA1_h
#define WTF_SHA1_h

#include <wtf/Vector.h>

namespace WTF {

class SHA1 {
public:
    SHA1();

    void addBytes(const Vector<uint8_t>& input)
    {
        addBytes(input.data(), input.size());
    }
    void addBytes(const uint8_t* input, size_t length);

    // computeHash has a side effect of resetting the state of the object.
    void computeHash(Vector<uint8_t, 20>&);

private:
    void finalize();
    void processBlock();
    void reset();

    uint8_t m_buffer[64];
    size_t m_cursor; // Number of bytes filled in m_buffer (0-64).
    uint64_t m_totalBytes; // Number of bytes added so far.
    uint32_t m_hash[5];
};

} // namespace WTF

using WTF::SHA1;

#endif // WTF_SHA1_h
Commit	Line	Data
14957cd0 A	1	/*
	2	* Copyright (C) 2011 Google Inc. All rights reserved.
	3	*
	4	* Redistribution and use in source and binary forms, with or without
	5	* modification, are permitted provided that the following conditions are
	6	* met:
	7	*
	8	* * Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* * Redistributions in binary form must reproduce the above
	11	* copyright notice, this list of conditions and the following disclaimer
	12	* in the documentation and/or other materials provided with the
	13	* distribution.
	14	* * Neither the name of Google Inc. nor the names of its
	15	* contributors may be used to endorse or promote products derived from
	16	* this software without specific prior written permission.
	17	*
	18	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	19	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	20	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	21	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	22	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	23	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	24	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	25	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	26	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	27	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	28	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	29	*/
	30
	31	#ifndef WTF_SHA1_h
	32	#define WTF_SHA1_h
	33
	34	#include <wtf/Vector.h>
	35
	36	namespace WTF {
	37
	38	class SHA1 {
	39	public:
	40	SHA1();
	41
	42	void addBytes(const Vector<uint8_t>& input)
	43	{
	44	addBytes(input.data(), input.size());
	45	}
	46	void addBytes(const uint8_t* input, size_t length);
	47
	48	// computeHash has a side effect of resetting the state of the object.
	49	void computeHash(Vector<uint8_t, 20>&);
	50
	51	private:
	52	void finalize();
	53	void processBlock();
	54	void reset();
	55
	56	uint8_t m_buffer[64];
	57	size_t m_cursor; // Number of bytes filled in m_buffer (0-64).
	58	uint64_t m_totalBytes; // Number of bytes added so far.
	59	uint32_t m_hash[5];
	60	};
	61
	62	} // namespace WTF
	63
	64	using WTF::SHA1;
65
66	#endif // WTF_SHA1_h