From a8f5087e5318211b58b0c87ebd4e036e6c6721e5 Mon Sep 17 00:00:00 2001 From: Pieter Wuille Date: Sun, 26 Oct 2014 01:38:13 -0700 Subject: Add HMAC-SHA256 --- src/crypto/hmac_sha256.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 src/crypto/hmac_sha256.h (limited to 'src/crypto/hmac_sha256.h') diff --git a/src/crypto/hmac_sha256.h b/src/crypto/hmac_sha256.h new file mode 100644 index 0000000000..4ceac70944 --- /dev/null +++ b/src/crypto/hmac_sha256.h @@ -0,0 +1,32 @@ +// Copyright (c) 2014 The Bitcoin developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#ifndef BITCOIN_HMAC_SHA256_H +#define BITCOIN_HMAC_SHA256_H + +#include "crypto/sha256.h" + +#include +#include + +/** A hasher class for HMAC-SHA-512. */ +class CHMAC_SHA256 +{ +private: + CSHA256 outer; + CSHA256 inner; + +public: + static const size_t OUTPUT_SIZE = 32; + + CHMAC_SHA256(const unsigned char* key, size_t keylen); + CHMAC_SHA256& Write(const unsigned char* data, size_t len) + { + inner.Write(data, len); + return *this; + } + void Finalize(unsigned char hash[OUTPUT_SIZE]); +}; + +#endif // BITCOIN_SHA256_H -- cgit v1.2.3