From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- mfbt/SHA1.h | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 mfbt/SHA1.h (limited to 'mfbt/SHA1.h') diff --git a/mfbt/SHA1.h b/mfbt/SHA1.h new file mode 100644 index 000000000..ddccaa67e --- /dev/null +++ b/mfbt/SHA1.h @@ -0,0 +1,63 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* 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. */ + +#ifndef mozilla_SHA1_h +#define mozilla_SHA1_h + +#include "mozilla/Types.h" + +#include +#include + +namespace mozilla { + +/** + * This class computes the SHA1 hash of a byte sequence, or of the concatenation + * of multiple sequences. For example, computing the SHA1 of two sequences of + * bytes could be done as follows: + * + * void SHA1(const uint8_t* buf1, uint32_t size1, + * const uint8_t* buf2, uint32_t size2, + * SHA1Sum::Hash& hash) + * { + * SHA1Sum s; + * s.update(buf1, size1); + * s.update(buf2, size2); + * s.finish(hash); + * } + * + * The finish method may only be called once and cannot be followed by calls + * to update. + */ +class SHA1Sum +{ + union + { + uint32_t mW[16]; /* input buffer */ + uint8_t mB[64]; + } mU; + uint64_t mSize; /* count of hashed bytes. */ + unsigned mH[22]; /* 5 state variables, 16 tmp values, 1 extra */ + bool mDone; + +public: + MFBT_API SHA1Sum(); + + static const size_t kHashSize = 20; + typedef uint8_t Hash[kHashSize]; + + /* Add len bytes of dataIn to the data sequence being hashed. */ + MFBT_API void update(const void* aData, uint32_t aLength); + + /* Compute the final hash of all data into hashOut. */ + MFBT_API void finish(SHA1Sum::Hash& aHashOut); +}; + +} /* namespace mozilla */ + +#endif /* mozilla_SHA1_h */ -- cgit v1.2.3