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41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
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/*********************************************************************
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* Filename: sha256.h
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* Author: Brad Conte (brad AT bradconte.com)
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* Copyright:
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* Disclaimer: This code is presented "as is" without any guarantees.
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* Details: Defines the API for the corresponding SHA1 implementation.
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*********************************************************************/
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#if defined (__cplusplus)
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extern "C" {
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#endif
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#ifndef SHA256_H
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#define SHA256_H
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/*************************** HEADER FILES ***************************/
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#include <stddef.h>
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/****************************** MACROS ******************************/
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#define SHA256_BLOCK_SIZE 32 // SHA256 outputs a 32 byte digest
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/**************************** DATA TYPES ****************************/
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typedef unsigned char BYTE; // 8-bit byte
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typedef unsigned int WORD; // 32-bit word, change to "long" for 16-bit machines
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typedef struct {
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BYTE data[64];
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WORD datalen;
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unsigned long long bitlen;
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WORD state[8];
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} SHA256_CTX;
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/*********************** FUNCTION DECLARATIONS **********************/
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void sha256_init(SHA256_CTX *ctx);
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void sha256_update(SHA256_CTX *ctx, const BYTE data[], size_t len);
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void sha256_final(SHA256_CTX *ctx, BYTE hash[]);
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#endif // SHA256_H
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#if defined (__cplusplus)
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}
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#endif
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