diff options
| -rw-r--r-- | src/Makefile.am | 2 | ||||
| -rw-r--r-- | src/crypto/hmac_sha256.cpp | 34 | ||||
| -rw-r--r-- | src/crypto/hmac_sha256.h | 32 | ||||
| -rw-r--r-- | src/test/crypto_tests.cpp | 43 |
4 files changed, 111 insertions, 0 deletions
diff --git a/src/Makefile.am b/src/Makefile.am index e1e6915185..1a5c57a3fa 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -205,11 +205,13 @@ crypto_libbitcoin_crypto_a_SOURCES = \ crypto/sha1.cpp \ crypto/sha256.cpp \ crypto/sha512.cpp \ + crypto/hmac_sha256.cpp \ crypto/hmac_sha512.cpp \ crypto/ripemd160.cpp \ crypto/common.h \ crypto/sha256.h \ crypto/sha512.h \ + crypto/hmac_sha256.h \ crypto/hmac_sha512.h \ crypto/sha1.h \ crypto/ripemd160.h diff --git a/src/crypto/hmac_sha256.cpp b/src/crypto/hmac_sha256.cpp new file mode 100644 index 0000000000..435896538b --- /dev/null +++ b/src/crypto/hmac_sha256.cpp @@ -0,0 +1,34 @@ +// 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. + +#include "crypto/hmac_sha256.h" + +#include <string.h> + +CHMAC_SHA256::CHMAC_SHA256(const unsigned char* key, size_t keylen) +{ + unsigned char rkey[64]; + if (keylen <= 64) { + memcpy(rkey, key, keylen); + memset(rkey + keylen, 0, 64 - keylen); + } else { + CSHA256().Write(key, keylen).Finalize(rkey); + memset(rkey + 32, 0, 32); + } + + for (int n = 0; n < 64; n++) + rkey[n] ^= 0x5c; + outer.Write(rkey, 64); + + for (int n = 0; n < 64; n++) + rkey[n] ^= 0x5c ^ 0x36; + inner.Write(rkey, 64); +} + +void CHMAC_SHA256::Finalize(unsigned char hash[OUTPUT_SIZE]) +{ + unsigned char temp[32]; + inner.Finalize(temp); + outer.Write(temp, 32).Finalize(hash); +} 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 <stdint.h> +#include <stdlib.h> + +/** 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 diff --git a/src/test/crypto_tests.cpp b/src/test/crypto_tests.cpp index b3783133d5..466b38fca9 100644 --- a/src/test/crypto_tests.cpp +++ b/src/test/crypto_tests.cpp @@ -6,6 +6,7 @@ #include "crypto/sha1.h" #include "crypto/sha256.h" #include "crypto/sha512.h" +#include "crypto/hmac_sha256.h" #include "crypto/hmac_sha512.h" #include "random.h" #include "utilstrencodings.h" @@ -50,6 +51,11 @@ void TestSHA256(const std::string &in, const std::string &hexout) { TestVector(C void TestSHA512(const std::string &in, const std::string &hexout) { TestVector(CSHA512(), in, ParseHex(hexout));} void TestRIPEMD160(const std::string &in, const std::string &hexout) { TestVector(CRIPEMD160(), in, ParseHex(hexout));} +void TestHMACSHA256(const std::string &hexkey, const std::string &hexin, const std::string &hexout) { + std::vector<unsigned char> key = ParseHex(hexkey); + TestVector(CHMAC_SHA256(&key[0], key.size()), ParseHex(hexin), ParseHex(hexout)); +} + void TestHMACSHA512(const std::string &hexkey, const std::string &hexin, const std::string &hexout) { std::vector<unsigned char> key = ParseHex(hexkey); TestVector(CHMAC_SHA512(&key[0], key.size()), ParseHex(hexin), ParseHex(hexout)); @@ -160,6 +166,43 @@ BOOST_AUTO_TEST_CASE(sha512_testvectors) { "37de8c3ef5459d76a52cedc02dc499a3c9ed9dedbfb3281afd9653b8a112fafc"); } +BOOST_AUTO_TEST_CASE(hmac_sha256_testvectors) { + // test cases 1, 2, 3, 4, 6 and 7 of RFC 4231 + TestHMACSHA256("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", + "4869205468657265", + "b0344c61d8db38535ca8afceaf0bf12b881dc200c9833da726e9376c2e32cff7"); + TestHMACSHA256("4a656665", + "7768617420646f2079612077616e7420666f72206e6f7468696e673f", + "5bdcc146bf60754e6a042426089575c75a003f089d2739839dec58b964ec3843"); + TestHMACSHA256("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", + "dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd" + "dddddddddddddddddddddddddddddddddddd", + "773ea91e36800e46854db8ebd09181a72959098b3ef8c122d9635514ced565fe"); + TestHMACSHA256("0102030405060708090a0b0c0d0e0f10111213141516171819", + "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd" + "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd", + "82558a389a443c0ea4cc819899f2083a85f0faa3e578f8077a2e3ff46729665b"); + TestHMACSHA256("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" + "aaaaaa", + "54657374205573696e67204c6172676572205468616e20426c6f636b2d53697a" + "65204b6579202d2048617368204b6579204669727374", + "60e431591ee0b67f0d8a26aacbf5b77f8e0bc6213728c5140546040f0ee37f54"); + TestHMACSHA256("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" + "aaaaaa", + "5468697320697320612074657374207573696e672061206c6172676572207468" + "616e20626c6f636b2d73697a65206b657920616e642061206c61726765722074" + "68616e20626c6f636b2d73697a6520646174612e20546865206b6579206e6565" + "647320746f20626520686173686564206265666f7265206265696e6720757365" + "642062792074686520484d414320616c676f726974686d2e", + "9b09ffa71b942fcb27635fbcd5b0e944bfdc63644f0713938a7f51535c3a35e2"); +} + BOOST_AUTO_TEST_CASE(hmac_sha512_testvectors) { // test cases 1, 2, 3, 4, 6 and 7 of RFC 4231 TestHMACSHA512("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", |