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QuickHash Library
QuickHash Library Overview
QuickHash Library Applications
QuickHash Library Installation
Register QuickHash Library
MD2
CMD2 ( C++ Interface )
CMD2 class members
MD2 API ( QuickHash API )
MD2 API Functions
MD2 ( QuickHash Type Library )
MD4
CMD4 ( C++ Interface )
CMD4 class members
MD4 API ( QuickHash API )
MD4 API Functions
MD4 ( QuickHash Type Library )
MD5
CMD5 ( C++ Interface )
CMD5 class members
MD5 API ( QuickHash API )
MD5 API Functions
MD5 ( QuickHash Type Library )
SHA-1
CSHA1 ( C++ Interface )
CSHA1 class members
SHA1 API ( QuickHash API )
SHA1 API Functions
SHA1 ( QuickHash Type Library )
SHA-2 (256)
CSHA256 ( C++ Interface )
CSHA256 class members
SHA256 API ( QuickHash API )
SHA256 API Functions
SHA256 ( QuickHash Type Library )
SHA-2 (384)
CSHA384 ( C++ Interface )
CSHA384 class members
SHA384 API ( QuickHash API )
SHA384 API Functions
SHA384 ( QuickHash Type Library )
SHA-2 (512)
CSHA512 ( C++ Interface )
CSHA512 class members
SHA512 API ( QuickHash API )
SHA512 API Functions
SHA512 ( QuickHash Type Library )
RIPEMD-128
CRIPEMD128 ( C++ Interface )
CRIPEMD128 ( C++ Interface )
RIPEMD128 API ( QuickHash API )
RIPEMD128 API Functions
RIPEMD128 ( QuickHash Type Library )
RIPEMD-160
CRIPEMD160 ( C++ Interface )
CRIPEMD160 ( C++ Interface )
RIPEMD160 API ( QuickHash API )
RIPEMD160 API Functions
RIPEMD160 ( QuickHash Type Library )
RIPEMD-256
CRIPEMD256 ( C++ Interface )
CRIPEMD256 ( C++ Interface )
RIPEMD256 API ( QuickHash API )
RIPEMD256 API Functions
RIPEMD256 ( QuickHash Type Library )
RIPEMD-320
CRIPEMD320 ( C++ Interface )
CRIPEMD320 ( C++ Interface )
RIPEMD320 API ( QuickHash API )
RIPEMD320 API Functions
RIPEMD320 ( QuickHash Type Library )
PANAMA
CPanama ( C++ Interface )
CPanama class members
PANAMA API ( QuickHash API )
PANAMA API Functions
PANAMA ( QuickHash Type Library )
TIGER
CTiger
CTiger class members
TIGER API ( QuickHash API )
TIGER API Functions
TIGER ( QuickHash Type Library )
CRC16
CCRC16 ( C++ Interface )
CCRC16 class members
CRC16 API ( QuickHash API )
CRC16 API Functions
CRC16 ( QuickHash Type Library )
CRC16C
CCRC16C ( C++ Interface )
CCRC16C class members
CRC16C API ( QuickHash API )
CRC16C API Functions
CRC16C ( QuickHash Type Library )
CRC32
CCRC32 ( C++ Interface )
CCRC32 class members
CRC32 API ( QuickHash API )
CRC32 API Functions
CRC32 ( QuickHash Type Library )
ADLER32
CAdler32 ( C++ Interface )
CAdler32 class members
ADLER32 API ( QuickHash API )
ADLER32 API Functions
ADLER32 ( QuickHash Type Library )
HMAC
CHMAC ( C++ Interface )
CHMAC class members
HMAC API ( QuickHash API )
HMAC API Functions
HMAC ( QuickHash Type Library )
QuickHash Type Library
Type Library Overview
Type Library Functions
Type Library Constants
Type Library Types
Type Library Error Codes
QuickHash Library Run-Time Dynamic Linking
Function Indicies in QuickHash.dll
License Agreement
Samples

SlavaSoft QuickHash Library Online Help

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QuickHash Library API

SL_HMAC_Init

int SL_HASHCALL SL_HMAC_Init( void* pContext, unsigned int nAlgID, const void* pKey, unsigned int nKeyLength );

Return value

Nonzero if initialization is successful, otherwise 0. In particular, this function returns 0 when nAlgID is invalid.

Parameters

pContext

    [out] Pointer to the memory buffer that will be used as a context.

nAlgID

    [in] The ID of the hash algorithm selected for calculations. For example, nAlgID has to be set to SLC_SHA1_ALGID when you need to calculate the HMAC using SHA-1 hash algorithm.

    All supported hash algorithms with their corresponding IDs are listed in Table1.

 pKey

    [in] Pointer to the key which represents a continuous memory block.

 nKeyLength

    [in] Length in bytes of the key.

Remarks

Initializes the context pointed by pContext with the key pointed by pKey. Before calling SL_HMAC_Init allocate at least SLC_HMAC_CONTEXTSIZE( CONTEXTSIZE, BLOCKSIZE ) bytes for the context. CONTEXTSIZE and BLOCKSIZE from the previous notation are predefined constants for the context size and the block size for a specific hash algorithm. For example, you have to allocate at least SLC_HMAC_CONTEXTSIZE( SLC_SHA1_CONTEXTSIZE, SLC_SHA1_BLOCKSIZE ) bytes for the context if you need to calculate the HMAC using SHA-1 hash algorithm.

All supported hash algorithms with their corresponding CONTEXTSIZEs and BLOCKSIZEs are listed in Table1.

Table1. Supported hash algorithms, their IDs, CONTEXTSIZEs and BLOCKSIZEs.

 

 

Algorithm Name Algorithm ID Algorithm CONTEXTSIZE Algorithm BLOCKSIZE
MD4 SLC_MD4_ALGID SLC_MD4_CONTEXTSIZE SLC_MD4_BLOCKSIZE
MD5 SLC_MD5_ALGID SLC_MD5_CONTEXTSIZE SLC_MD5_BLOCKSIZE
SHA-1 SLC_SHA1_ALGID SLC_SHA1_CONTEXTSIZE SLC_SHA1_BLOCKSIZE
SHA-256 SLC_SHA256_ALGID SLC_SHA256_CONTEXTSIZE SLC_SHA256_BLOCKSIZE
SHA-512 SLC_SHA512_ALGID SLC_SHA512_CONTEXTSIZE SLC_SHA512_BLOCKSIZE
SHA-384 SLC_SHA384_ALGID SLC_SHA384_CONTEXTSIZE SLC_SHA384_BLOCKSIZE
RIPEMD128 SLC_RIPEMD128_ALGID SLC_RIPEMD128_CONTEXTSIZE SLC_RIPEMD128_BLOCKSIZE
RIPEMD160 SLC_RIPEMD160_ALGID SLC_RIPEMD160_CONTEXTSIZE SLC_RIPEMD160_BLOCKSIZE
RIPEMD256 SLC_RIPEMD256_ALGID SLC_RIPEMD256_CONTEXTSIZE SLC_RIPEMD256_BLOCKSIZE
RIPEMD320 SLC_RIPEMD320_ALGID SLC_RIPEMD320_CONTEXTSIZE SLC_RIPEMD320_BLOCKSIZE
PANAMA SLC_PANAMA_ALGID SLC_PANAMA_CONTEXTSIZE SLC_PANAMA_BLOCKSIZE
TIGER SLC_TIGER_ALGID SLC_TIGER_CONTEXTSIZE SLC_TIGER_BLOCKSIZE

Example

See the example for SL_HMAC_Final.

 

HMAC API Overview   |   HMAC API Functions   |   Useful Links   |   HashCalc

 

See Also    SL_HMAC_InitKeyStr, SL_HMAC_Final, SL_HMAC_FinalHex, SL_HMAC_Update, SL_HMAC_UpdateStr


 

 

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