3 * AUTHOR: Aaron D. Gifford - http://www.aarongifford.com/
5 * Copyright (c) 2000-2001, Aaron D. Gifford
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9 * modification, are permitted provided that the following conditions
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12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
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15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the copyright holder nor the names of contributors
17 * may be used to endorse or promote products derived from this software
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20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
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27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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38 /*** SHA-256/384/512 Various Length Definitions ***********************/
39 #define SHA256_BLOCK_LENGTH 64
40 #define SHA256_DIGEST_LENGTH 32
41 #define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
42 #define SHA384_BLOCK_LENGTH 128
43 #define SHA384_DIGEST_LENGTH 48
44 #define SHA384_DIGEST_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1)
45 #define SHA512_BLOCK_LENGTH 128
46 #define SHA512_DIGEST_LENGTH 64
47 #define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1)
50 /*** SHA-256/384/512 Context Structures *******************************/
51 typedef UINT8 sha2_byte; /* Exactly 1 byte */
52 typedef UINT32 sha2_word32; /* Exactly 4 bytes */
53 typedef UINT64 sha2_word64; /* Exactly 8 bytes */
55 typedef struct _SHA256_CTX {
58 sha2_byte buffer[SHA256_BLOCK_LENGTH];
60 typedef struct _SHA512_CTX {
62 sha2_word64 bitcount[2];
63 sha2_byte buffer[SHA512_BLOCK_LENGTH];
66 typedef SHA512_CTX SHA384_CTX;
69 /*** SHA-256/384/512 Function Prototypes ******************************/
71 void SHA256_Init(SHA256_CTX *);
72 void SHA256_Update(SHA256_CTX*, const sha2_byte*, size_t);
73 void SHA256_Final(sha2_byte[SHA256_DIGEST_LENGTH], SHA256_CTX*);
74 char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
75 char* SHA256_Data(const sha2_byte*, size_t, char[SHA256_DIGEST_STRING_LENGTH]);
77 void SHA384_Init(SHA384_CTX*);
78 void SHA384_Update(SHA384_CTX*, const sha2_byte*, size_t);
79 void SHA384_Final(sha2_byte[SHA384_DIGEST_LENGTH], SHA384_CTX*);
80 char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]);
81 char* SHA384_Data(const sha2_byte*, size_t, char[SHA384_DIGEST_STRING_LENGTH]);
83 void SHA512_Init(SHA512_CTX*);
84 void SHA512_Update(SHA512_CTX*, const sha2_byte*, size_t);
85 void SHA512_Final(sha2_byte[SHA512_DIGEST_LENGTH], SHA512_CTX*);
86 char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
87 char* SHA512_Data(const sha2_byte*, size_t, char[SHA512_DIGEST_STRING_LENGTH]);
89 #endif /* __SHA2_H__ */