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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Simple class for computing SHA1. */
/*
* To compute the SHA1 of a buffer using this class you should write something
* like:
* void SHA1(const uint8_t* buf, unsigned size, uint8_t hash[20])
* {
* SHA1Sum S;
* S.update(buf, size);
* S.finish(hash);
* }
* If there are multiple buffers or chunks, the update method can be called
* multiple times and the SHA1 is computed on the concatenation of all the
* buffers passed to it.
* The finish method may only be called once and cannot be followed by calls
* to update.
*/
#ifndef mozilla_SHA1_h_
#define mozilla_SHA1_h_
#include "mozilla/StandardInteger.h"
namespace mozilla {
class SHA1Sum {
union {
uint32_t w[16]; /* input buffer */
uint8_t b[64];
} u;
uint64_t size; /* count of hashed bytes. */
unsigned H[22]; /* 5 state variables, 16 tmp values, 1 extra */
bool mDone;
public:
static const unsigned int HashSize = 20;
SHA1Sum();
void update(const uint8_t *dataIn, uint32_t len);
void finish(uint8_t hashout[20]);
};
}
#endif /* mozilla_SHA1_h_ */
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