Split sha.h into new files sha1.h and sha2.h.

1 files changed, 156 insertions, 0 deletions

diff --git a/sha2.h b/sha2.h
new file mode 100644
index 00000000..738261e2
--- /dev/null
+++ b/sha2.h
@@ -0,0 +1,156 @@
+/* sha2.h
+ *
+ * The sha2 family of hash functions.
+ */
+
+/* nettle, low-level cryptographics library
+ *
+ * Copyright (C) 2001, 2012 Niels Möller
+ *  
+ * The nettle library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at your
+ * option) any later version.
+ * 
+ * The nettle library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+ * License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with the nettle library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02111-1301, USA.
+ */
+ 
+#ifndef NETTLE_SHA2_H_INCLUDED
+#define NETTLE_SHA2_H_INCLUDED
+
+#include "nettle-types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Name mangling */
+#define sha224_init nettle_sha224_init
+#define sha224_digest nettle_sha224_digest
+#define sha256_init nettle_sha256_init
+#define sha256_update nettle_sha256_update
+#define sha256_digest nettle_sha256_digest
+#define sha384_init nettle_sha384_init
+#define sha384_digest nettle_sha384_digest
+#define sha512_init nettle_sha512_init
+#define sha512_update nettle_sha512_update
+#define sha512_digest nettle_sha512_digest
+
+/* SHA256 */
+
+#define SHA256_DIGEST_SIZE 32
+#define SHA256_DATA_SIZE 64
+
+/* Digest is kept internally as 8 32-bit words. */
+#define _SHA256_DIGEST_LENGTH 8
+
+struct sha256_ctx
+{
+  uint32_t state[_SHA256_DIGEST_LENGTH];    /* State variables */
+  uint32_t count_low, count_high;           /* 64-bit block count */
+  uint8_t block[SHA256_DATA_SIZE];          /* SHA256 data buffer */
+  unsigned int index;                       /* index into buffer */
+};
+
+void
+sha256_init(struct sha256_ctx *ctx);
+
+void
+sha256_update(struct sha256_ctx *ctx,
+	      unsigned length,
+	      const uint8_t *data);
+
+void
+sha256_digest(struct sha256_ctx *ctx,
+	      unsigned length,
+	      uint8_t *digest);
+
+/* Internal compression function. STATE points to 8 uint32_t words,
+   DATA points to 64 bytes of input data, possibly unaligned, and K
+   points to the table of constants. */
+void
+_nettle_sha256_compress(uint32_t *state, const uint8_t *data, const uint32_t *k);
+
+
+/* SHA224, a truncated SHA256 with different initial state. */
+
+#define SHA224_DIGEST_SIZE 28
+#define SHA224_DATA_SIZE SHA256_DATA_SIZE
+#define sha224_ctx sha256_ctx
+
+void
+sha224_init(struct sha256_ctx *ctx);
+
+#define sha224_update nettle_sha256_update
+
+void
+sha224_digest(struct sha256_ctx *ctx,
+	      unsigned length,
+	      uint8_t *digest);
+
+
+/* SHA512 */
+
+#define SHA512_DIGEST_SIZE 64
+#define SHA512_DATA_SIZE 128
+
+/* Digest is kept internally as 8 64-bit words. */
+#define _SHA512_DIGEST_LENGTH 8
+
+struct sha512_ctx
+{
+  uint64_t state[_SHA512_DIGEST_LENGTH];    /* State variables */
+  uint64_t count_low, count_high;           /* 128-bit block count */
+  uint8_t block[SHA512_DATA_SIZE];          /* SHA512 data buffer */
+  unsigned int index;                       /* index into buffer */
+};
+
+void
+sha512_init(struct sha512_ctx *ctx);
+
+void
+sha512_update(struct sha512_ctx *ctx,
+	      unsigned length,
+	      const uint8_t *data);
+
+void
+sha512_digest(struct sha512_ctx *ctx,
+	      unsigned length,
+	      uint8_t *digest);
+
+/* Internal compression function. STATE points to 8 uint64_t words,
+   DATA points to 128 bytes of input data, possibly unaligned, and K
+   points to the table of constants. */
+void
+_nettle_sha512_compress(uint64_t *state, const uint8_t *data, const uint64_t *k);
+
+
+/* SHA384, a truncated SHA512 with different initial state. */
+
+#define SHA384_DIGEST_SIZE 48
+#define SHA384_DATA_SIZE SHA512_DATA_SIZE
+#define sha384_ctx sha512_ctx
+
+void
+sha384_init(struct sha512_ctx *ctx);
+
+#define sha384_update nettle_sha512_update
+
+void
+sha384_digest(struct sha512_ctx *ctx,
+	      unsigned length,
+	      uint8_t *digest);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NETTLE_SHA2_H_INCLUDED */