/*
* SHA-1 Hash Function (FIPS 180-1, RFC 3174)
*
- * (c) 2008 Martin Mares <mj@ucw.cz>
+ * (c) 2008--2009 Martin Mares <mj@ucw.cz>
*
* Based on the code from libgcrypt-1.2.3, which was:
*
#ifndef _UCW_SHA1_H
#define _UCW_SHA1_H
+#ifdef CONFIG_UCW_CLEAN_ABI
+#define sha1_final ucw_sha1_final
+#define sha1_hash_buffer ucw_sha1_hash_buffer
+#define sha1_hmac ucw_sha1_hmac
+#define sha1_hmac_final ucw_sha1_hmac_final
+#define sha1_hmac_init ucw_sha1_hmac_init
+#define sha1_hmac_update ucw_sha1_hmac_update
+#define sha1_init ucw_sha1_init
+#define sha1_update ucw_sha1_update
+#endif
+
/**
* Internal SHA1 state.
* You should use it just as an opaque handle only.
* Push another @inlen bytes of data pointed to by @inbuf onto the
* SHA1 hash currently in @hd. You can call this any times you want on
* the same hash (and you do not need to reinitialize it by
- * sha1_init()). It has the same effect as concatenating all the data
+ * @sha1_init()). It has the same effect as concatenating all the data
* together and passing them at once.
*/
-void sha1_update(sha1_context *hd, const byte *inbuf, uns inlen);
+void sha1_update(sha1_context *hd, const byte *inbuf, uint inlen);
/**
- * No more sha1_update() calls will be done. This terminates the hash
+ * No more @sha1_update() calls will be done. This terminates the hash
* and returns a pointer to it.
*
* Note that the pointer points into data in the @hd context. If it ceases
* sha1_update(&hd, buffer, length);
* memcpy(outbuf, sha1_final(&hd), SHA1_SIZE);
*/
-void sha1_hash_buffer(byte *outbuf, const byte *buffer, uns length);
+void sha1_hash_buffer(byte *outbuf, const byte *buffer, uint length);
/**
* SHA1 HMAC message authentication. If you provide @key and @data,
* the result will be stored in @outbuf.
*/
-void sha1_hmac(byte *outbuf, const byte *key, uns keylen, const byte *data, uns datalen);
+void sha1_hmac(byte *outbuf, const byte *key, uint keylen, const byte *data, uint datalen);
+
+/**
+ * The HMAC also exists in a stream version in a way analogous to the
+ * plain SHA1. Pass this as a context.
+ */
+typedef struct {
+ sha1_context ictx;
+ sha1_context octx;
+} sha1_hmac_context;
+
+void sha1_hmac_init(sha1_hmac_context *hd, const byte *key, uint keylen); /** Initialize HMAC with context @hd and the given key. See sha1_init(). */
+void sha1_hmac_update(sha1_hmac_context *hd, const byte *data, uint datalen); /** Hash another @datalen bytes of data. See sha1_update(). */
+byte *sha1_hmac_final(sha1_hmac_context *hd); /** Terminate the HMAC and return a pointer to the allocated hash. See sha1_final(). */
#define SHA1_SIZE 20 /** Size of the SHA1 hash in its binary representation **/
#define SHA1_HEX_SIZE 41 /** Buffer length for a string containing SHA1 in hexadecimal format. **/