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authorMark Haines <mjark@negativecurvature.net>2015-02-26 16:43:06 +0000
committerMark Haines <mjark@negativecurvature.net>2015-02-26 16:43:06 +0000
commitc61e5359cb454ae20c0b7b057c3a7b53e2beefd6 (patch)
tree7304b549b7ff13c44cfc59a753d7515c8a6289b0 /sha256.h
Squashed 'lib/crypto-algorithms/' content from commit 100f4ff
git-subtree-dir: lib/crypto-algorithms git-subtree-split: 100f4ff91b5a5b31a84b3999365c3058df6251ea
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+/*********************************************************************
+* Filename: sha256.h
+* Author: Brad Conte (brad AT bradconte.com)
+* Copyright:
+* Disclaimer: This code is presented "as is" without any guarantees.
+* Details: Defines the API for the corresponding SHA1 implementation.
+*********************************************************************/
+
+#ifndef SHA256_H
+#define SHA256_H
+
+/*************************** HEADER FILES ***************************/
+#include <stddef.h>
+
+/****************************** MACROS ******************************/
+#define SHA256_BLOCK_SIZE 32 // SHA256 outputs a 32 byte digest
+
+/**************************** DATA TYPES ****************************/
+typedef unsigned char BYTE; // 8-bit byte
+typedef unsigned int WORD; // 32-bit word, change to "long" for 16-bit machines
+
+typedef struct {
+ BYTE data[64];
+ WORD datalen;
+ unsigned long long bitlen;
+ WORD state[8];
+} SHA256_CTX;
+
+/*********************** FUNCTION DECLARATIONS **********************/
+void sha256_init(SHA256_CTX *ctx);
+void sha256_update(SHA256_CTX *ctx, const BYTE data[], size_t len);
+void sha256_final(SHA256_CTX *ctx, BYTE hash[]);
+
+#endif // SHA256_H