gsk_factor_private_key

Factorizes an RSA private key into its component values.

Note: This function is deprecated. Use gsk_factor_private_key() instead.

Format

   #include <gskcms.h>

   gsk_status gsk_factor_private_key_rsa (
                                          pkcs_private_key_info * private_key,
                                          gsk_buffer *            modulus,
                                          gsk_buffer *            public_exponent,
                                          gsk_buffer *            private_exponent,
                                          gsk_buffer *            prime1,
                                          gsk_buffer *            prime2,
                                          gsk_buffer *            prime_exponent1,
                                          gsk_buffer *            prime_exponent2,
                                          gsk_buffer *            coefficient)

Parameters

private_key: Specifies the private key.
modulus: Returns the modulus (n).
public_exponent: Returns the public exponent (e).
private_exponent: Returns the private exponent (d).
prime1: Returns the 1st prime (p).
prime2: Returns the 2nd prime (q).
prime_exponent1: Returns the private exponent d modulo p-1.
prime_exponent2: Returns the private exponent d modulo q-1.
coefficient: Returns the CRT coefficient q^-1 mod p.

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.

Usage

The gsk_factor_private_key_rsa() function deconstructs the pkcs_private_key_info into its RSA private key components.