gsk_factor_public

Factorizes a public key into its component values.

Format

   #include <gskcms.h>

   gsk_status gsk_factor_public_key(
                                     x509_public_key_info *     public_key,
                                     gsk_public_key *           public_key_factors)

Parameters

public_key: Specifies the public key.
public_key_factors: Returns the public key components.

Results

The function return value will be 0 if no error is detected. Otherwise, it will be one of the return codes listed in the gskcms.h include file. These are some possible errors:

[ASN_ELEMENTS_MISSING]: Required data element is missing.
[CMSERR_ALG_NOT_SUPPORTED]: Cryptographic algorithm not supported.
[CMSERR_PUBLIC_KEY_INFO_NOT_SUPPLIED]: Public key information not supplied.
[CMSERR_PUBLIC_KEY_NOT_SUPPLIED]: Public key structure not supplied.
[CMSERR_STRUCTURE_TOO_SMALL]: Size specified for supplied structure is too small.

Usage

The gsk_factor_public_key() function deconstructs the public key into its public key components, formatted for use with ICSF PKCS #11 tokens.

Before calling the function, the application must initialize the size field in public_key_factors to the size of the gsk_public_key structure. It must also prime public_key with the appropriate public key to be factorized before calling the routine.

The routine will return the factorized component of the public key in public_key_factors. The x509_algorithm_identifier is set with the appropriate value for the public key type when returned.