1 files changed, 72 insertions, 0 deletions
diff --git a/sha.h b/sha.h
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+++ b/sha.h
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+#ifndef CRYPTOPP_SHA_H
+#define CRYPTOPP_SHA_H
+
+#include "iterhash.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+/// <a href="http://www.weidai.com/scan-mirror/md.html#SHA-1">SHA-1</a>
+class SHA : public IteratedHashWithStaticTransform<word32, BigEndian, 64, SHA>
+{
+public:
+	enum {DIGESTSIZE = 20};
+	SHA() : IteratedHashWithStaticTransform<word32, BigEndian, 64, SHA>(DIGESTSIZE) {Init();}
+	static void Transform(word32 *digest, const word32 *data);
+	static const char *StaticAlgorithmName() {return "SHA-1";}
+
+protected:
+	void Init();
+};
+
+typedef SHA SHA1;
+
+//! implements the SHA-256 standard
+class SHA256 : public IteratedHashWithStaticTransform<word32, BigEndian, 64, SHA256>
+{
+public:
+	enum {DIGESTSIZE = 32};
+	SHA256() : IteratedHashWithStaticTransform<word32, BigEndian, 64, SHA256>(DIGESTSIZE) {Init();}
+	static void Transform(word32 *digest, const word32 *data);
+	static const char *StaticAlgorithmName() {return "SHA-256";}
+
+protected:
+	void Init();
+
+	static const word32 K[64];
+};
+
+#ifdef WORD64_AVAILABLE
+
+//! implements the SHA-512 standard
+class SHA512 : public IteratedHashWithStaticTransform<word64, BigEndian, 128, SHA512>
+{
+public:
+	enum {DIGESTSIZE = 64};
+	SHA512() : IteratedHashWithStaticTransform<word64, BigEndian, 128, SHA512>(DIGESTSIZE) {Init();}
+	static void Transform(word64 *digest, const word64 *data);
+	static const char *StaticAlgorithmName() {return "SHA-512";}
+
+protected:
+	void Init();
+
+	static const word64 K[80];
+};
+
+//! implements the SHA-384 standard
+class SHA384 : public IteratedHashWithStaticTransform<word64, BigEndian, 128, SHA512>
+{
+public:
+	enum {DIGESTSIZE = 48};
+	SHA384() : IteratedHashWithStaticTransform<word64, BigEndian, 128, SHA512>(64) {Init();}
+	unsigned int DigestSize() const {return DIGESTSIZE;};
+	static const char *StaticAlgorithmName() {return "SHA-384";}
+
+protected:
+	void Init();
+};
+
+#endif
+
+NAMESPACE_END
+
+#endif