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-rw-r--r--src/crypto/sha2.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/src/crypto/sha2.h b/src/crypto/sha2.h
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+++ b/src/crypto/sha2.h
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+// Copyright (c) 2014 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_SHA2_H
+#define BITCOIN_SHA2_H
+
+#include <stdint.h>
+#include <stdlib.h>
+
+/** A hasher class for SHA-256. */
+class CSHA256 {
+private:
+ uint32_t s[8];
+ unsigned char buf[64];
+ size_t bytes;
+
+public:
+ CSHA256();
+ CSHA256& Write(const unsigned char *data, size_t len);
+ void Finalize(unsigned char *hash);
+ CSHA256& Reset();
+};
+
+/** A hasher class for SHA-512. */
+class CSHA512 {
+private:
+ uint64_t s[8];
+ unsigned char buf[128];
+ size_t bytes;
+
+public:
+ CSHA512();
+ CSHA512& Write(const unsigned char *data, size_t len);
+ void Finalize(unsigned char *hash);
+ CSHA512& Reset();
+};
+
+/** A hasher class for HMAC-SHA-512. */
+class CHMAC_SHA512 {
+private:
+ CSHA512 outer;
+ CSHA512 inner;
+
+public:
+ CHMAC_SHA512(const unsigned char *key, size_t keylen);
+ CHMAC_SHA512& Write(const unsigned char *data, size_t len) {
+ inner.Write(data, len);
+ return *this;
+ }
+ void Finalize(unsigned char *hash);
+};
+
+#endif