BCRYPT_DSA_PARAMETER_HEADER_V2 Structure

The BCRYPT_DSA_PARAMETER_HEADER_V2 structure is contains parameter header information for a Digital Signature Algorithm (DSA) key. This structure is used with the BCRYPT_DSA_PARAMETERS property in the BCryptSetProperty function.

Syntax

typedef struct _BCRYPT_DSA_PARAMETER_HEADER_V2 {
    ULONG cbLength;
    ULONG dwMagic;
    ULONG cbKeyLength;
    HASHALGORITHM_ENUM hashAlgorithm;
    DSAFIPSVERSION_ENUM standardVersion;
    ULONG cbSeedLength;
    ULONG cbGroupSize;
    UCHAR Count[4];
} BCRYPT_DSA_PARAMETER_HEADER_V2;  

Members

cbLength
The total size, in bytes, of this structure and the buffer that immediately follows this structure in memory.

dwMagic
The magic value for the key.

cbKeyLength
The size, in bytes, of the key that this structure applies to.

hashAlgorithm
A HASHALGORITHM_ENUM enumeration value that specifies the hashing algorithm to use.

standardVersion
A DSAFIPSVERSION_ENUM enumeration value that specifies the Federal Information Processing Standard(FIPS) to apply.

cbSeedLength
Length of the seed used to generate the prime number q.

cbGroupSize

Size of the prime number q . Currently, if the key is less than 128 bits, q is 20 bytes long. If the key exceeds 256 bits, q is 32 bytes long.

Count

The number of iterations performed to generate the prime number q from the seed. For more information, see NIST standard FIPS186-3.

Requirements

Header: Declared in bcrypt.h.

Library: Use bcrypt.lib.