76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
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#ifndef FT_SHA_H
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# define FT_SHA_H
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#include <stdint.h>
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# define FT_SHA256_BLOCK_SIZE 64
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# define FT_SHA256_WORDS_COUNT 16
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# define FT_SHA256_MESSAGE_LENGTH_BYTE 8
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# define FT_SHA256_DIGEST_LENGTH_BYTE 32
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# define FT_SHA256_STRING_SIZE_BYTE 65
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# define FT_SHA256_REG_SIZE_BYTE 4
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/* Define the SHA shift, rotate left, and rotate right macros */
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#define SHR(bits, word) ((word) >> (bits))
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#define ROTL(bits, word) (((word) << (bits)) | ((word) >> (32 - (bits))))
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#define ROTR(bits, word) (((word) >> (bits)) | ((word) << (32 - (bits))))
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/* Define the SHA SIGMA and sigma macros */
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#define SHA256_SIGMA0(w) (ROTR(2, w) ^ ROTR(13, w) ^ ROTR(22, w))
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#define SHA256_SIGMA1(word) (ROTR(6, word) ^ ROTR(11, word) ^ ROTR(25, word))
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#define SHA256_sigma0(word) (ROTR(7, word) ^ ROTR(18, word) ^ SHR(3, word))
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#define SHA256_sigma1(word) (ROTR(17, word) ^ ROTR(19, word) ^ SHR(10, word))
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#define SHA_Ch(x, y, z) (((x) & ((y) ^ (z))) ^ (z))
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#define SHA_Maj(x, y, z) (((x) & ((y) | (z))) | ((y) & (z)))
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typedef uint64_t BYTE8;
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typedef uint32_t BYTE4;
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typedef unsigned char BYTE1;
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typedef struct s_sha256_ctx
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{
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BYTE4 a;
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BYTE4 b;
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BYTE4 c;
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BYTE4 d;
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BYTE4 e;
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BYTE4 f;
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BYTE4 g;
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BYTE4 h;
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BYTE1 block[FT_SHA256_BLOCK_SIZE];
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BYTE8 bit_len;
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} t_sha256_ctx;
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typedef struct s_temp_registers
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{
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BYTE4 a;
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BYTE4 b;
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BYTE4 c;
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BYTE4 d;
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BYTE4 e;
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BYTE4 f;
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BYTE4 g;
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BYTE4 h;
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} t_temp_registers;
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void ft_sha256_init(t_sha256_ctx *ctx);
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void ft_sha256_update(t_sha256_ctx *ctx,
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BYTE1 *message, BYTE8 len);
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void ft_sha256_final(BYTE1 digest[FT_SHA256_DIGEST_LENGTH_BYTE],
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t_sha256_ctx *ctx);
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void ft_sha256_transform(t_sha256_ctx *ctx,
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BYTE1 block[FT_SHA256_BLOCK_SIZE]);
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void ft_sha256_decode(BYTE4 w[FT_SHA256_WORDS_COUNT],
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BYTE1 b[FT_SHA256_BLOCK_SIZE]);
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void ft_sha256_encode_len(BYTE1 b[FT_SHA256_MESSAGE_LENGTH_BYTE],
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BYTE8 len);
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void ft_sha256_encode_register(
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BYTE1 digest_part[FT_SHA256_REG_SIZE_BYTE], BYTE4 reg);
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void ft_sha256_padding(BYTE1 padding[FT_SHA256_BLOCK_SIZE]);
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void ft_sha256_digest_string(
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BYTE1 digest[FT_SHA256_DIGEST_LENGTH_BYTE],
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BYTE1 digst_string[FT_SHA256_STRING_SIZE_BYTE]);
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BYTE4 *ft_sha256_constants(void);
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#endif
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