From 5d55afabe1a44e976a9e6beae203195eb5f97a4c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se>
Date: Sun, 7 Oct 2001 20:50:45 +0200
Subject: [PATCH] * sha.h: Renamed sha1.h to sha.h, and added declarations for
SHA-256.
Rev: src/nettle/sha.h:1.1
Rev: src/nettle/sha1.c:1.5
Rev: src/nettle/sha1.h:1.4(DEAD)
---
sha1.h => sha.h | 47 +++++++++++++++++++++++++++++++++++++++++------
sha1.c | 2 +-
2 files changed, 42 insertions(+), 7 deletions(-)
rename sha1.h => sha.h (62%)
diff --git a/sha1.h b/sha.h
similarity index 62%
rename from sha1.h
rename to sha.h
index ab1a88b3..0cf9b8ca 100644
--- a/sha1.h
+++ b/sha.h
@@ -1,6 +1,6 @@
-/* sha1.h
+/* sha.h
*
- * The sha1 hash function.
+ * The sha1 and sha256 hash functions.
*/
/* nettle, low-level cryptographics library
@@ -23,15 +23,17 @@
* MA 02111-1307, USA.
*/
-#ifndef NETTLE_SHA1_H_INCLUDED
-#define NETTLE_SHA1_H_INCLUDED
+#ifndef NETTLE_SHA_H_INCLUDED
+#define NETTLE_SHA_H_INCLUDED
#include <inttypes.h>
+/* SHA1 */
+
#define SHA1_DIGEST_SIZE 20
#define SHA1_DATA_SIZE 64
-/* Digest is kept internally as 4 32-bit words. */
+/* Digest is kept internally as 5 32-bit words. */
#define _SHA1_DIGEST_LENGTH 5
struct sha1_ctx
@@ -58,4 +60,37 @@ sha1_digest(const struct sha1_ctx *ctx,
unsigned length,
uint8_t *digest);
-#endif /* NETTLE_SHA1_H_INCLUDED */
+/* 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_final(struct sha256_ctx *ctx);
+
+void
+sha256_digest(const struct sha256_ctx *ctx,
+ unsigned length,
+ uint8_t *digest);
+
+
+#endif /* NETTLE_SHA_H_INCLUDED */
diff --git a/sha1.c b/sha1.c
index 8c044b71..a0982fb4 100644
--- a/sha1.c
+++ b/sha1.c
@@ -35,7 +35,7 @@
* effort (for example the reengineering of a great many Capstone chips).
*/
-#include "sha1.h"
+#include "sha.h"
#include "macros.h"
--
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