summaryrefslogtreecommitdiffstats
path: root/src/sha256.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/sha256.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/src/sha256.h b/src/sha256.h
new file mode 100644
index 0000000..a0d90a7
--- /dev/null
+++ b/src/sha256.h
@@ -0,0 +1,35 @@
+/*********************************************************************
+* 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 SHA256 implementation.
+*********************************************************************/
+
+#ifndef SHA256_H
+#define SHA256_H
+
+/*************************** HEADER FILES ***************************/
+#include <stddef.h>
+#include <stdint.h>
+
+/****************************** MACROS ******************************/
+#define SHA256_BLOCK_SIZE 32 // SHA256 outputs a 32 byte digest
+
+/**************************** DATA TYPES ****************************/
+typedef uint8_t BYTE; // 8-bit byte
+typedef uint32_t WORD; // 32-bit word
+
+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