ippsHashDRBG_Init

ippsHashDRBG_Init#

Initializes the Hash DRBG state.

Syntax#

IppStatus ippsHashDRBG_Init(const IppsHashMethod* pHashMethod,
                            IppsHashDRBGState* pDrbgCtx);

Include Files#

ippcp.h

Parameters#

pHashMethod

Pointer to the hash method (may be NULL).

pDrbgCtx

Pointer to the IppsHashDRBGState context. The size is equal to the value returned by the ippsHashDRBG_GetSize.

Description#

The function initializes the IppsHashDRBGState. Additionally, sets security strength according to the user-selected hashing method as shown in the Table 1: Maximum security strengths for hash functions in bits.

Note

If the hash method is not specified (NULL pointer is passed), SHA-256 will be set by default.

Return Values#

ippStsNoErr

Indicates no error. All single operations executed without errors. Any other value indicates an error.

ippStsNullPtrErr

pDrbgCtx is a NULL pointer.

ippStsNotSupportedModeErr

The hash algorithm is not supported.

ippStsErr

Functions invoked inside ippsHashDRBG_Init failed with this error status code.
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