Add SHA-384/512 and HMAC-SHA-384/512 crypto hash

lib/Modules

 sha256.c
 sha256.h
+sha512.c
+sha512.h
 sha1.c
 sha1.h
 birdlib.h

lib/sha512.h

+/*
+ *	BIRD Library -- SHA-512 and SHA-384 Hash Functions,
+ *			HMAC-SHA-512 and HMAC-SHA-384 Functions
+ *
+ *	(c) 2015 CZ.NIC z.s.p.o.
+ *
+ *	Based on the code from libgcrypt-1.6.0, which is
+ *	(c) 2003, 2006, 2008, 2009 Free Software Foundation, Inc.
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#ifndef _BIRD_SHA512_H_
+#define _BIRD_SHA512_H_
+
+#include "lib/sha256.h"
+
+#define SHA384_SIZE 		48
+#define SHA384_HEX_SIZE		97
+#define SHA384_BLOCK_SIZE	128
+
+#define SHA512_SIZE 		64
+#define SHA512_HEX_SIZE		129
+#define SHA512_BLOCK_SIZE	128
+
+struct sha512_state
+{
+  u64 h0, h1, h2, h3, h4, h5, h6, h7;
+};
+
+struct sha512_context
+{
+  struct sha256_context bctx;
+  struct sha512_state state;
+};
+#define sha384_context sha512_context	/* aliasing 'struct sha384_context' to 'struct sha512_context' */
+
+
+void sha512_init(struct sha512_context *ctx);
+void sha384_init(struct sha384_context *ctx);
+
+void sha512_update(struct sha512_context *ctx, const byte *in_buf, size_t in_len);
+static inline void sha384_update(struct sha384_context *ctx, const byte *in_buf, size_t in_len)
+{
+  sha512_update(ctx, in_buf, in_len);
+}
+
+byte* sha512_final(struct sha512_context *ctx);
+static inline byte* sha384_final(struct sha384_context *ctx)
+{
+  return sha512_final(ctx);
+}
+
+/*
+ *	HMAC-SHA512, HMAC-SHA384
+ */
+struct sha512_hmac_context
+{
+  struct sha512_context ictx;
+  struct sha512_context octx;
+} ;
+#define sha384_hmac_context sha512_hmac_context	/* aliasing 'struct sha384_hmac_context' to 'struct sha384_hmac_context' */
+
+void sha512_hmac_init(struct sha512_hmac_context *ctx, const byte *key, size_t keylen);
+void sha384_hmac_init(struct sha384_hmac_context *ctx, const byte *key, size_t keylen);
+
+void sha512_hmac_update(struct sha512_hmac_context *ctx, const byte *buf, size_t buflen);
+void sha384_hmac_update(struct sha384_hmac_context *ctx, const byte *buf, size_t buflen);
+
+byte *sha512_hmac_final(struct sha512_hmac_context *ctx);
+byte *sha384_hmac_final(struct sha384_hmac_context *ctx);
+
+#endif /* _BIRD_SHA512_H_ */