gsk_encode_ec_parameters()

Encodes the EC domain parameters for an ECC key

Format

   #include <gskcms.h>

   gsk_status gsk_encode_ec_parameters (
                                          int               arg_count,
                                          x509_ecurve_type  ec_curve,
                                          gsk_buffer *      key_params,
                                          ...)

Parameters

arg_count: Specifies the number of parameters following the arg_count parameter. Currently, arg_count must be set to 2.
ec_curve: Specifies the EC named curve
key_params: Returns the ASN.1 stream for the EC domain parameters. The application should call the gsk_free_buffer function to release the storage when it is no longer needed.

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_NO_MEMORY]: Insufficient memory is available.
[CMSERR_BAD_ARG_COUNT]: Variable argument count is not valid.
[CMSERR_ECURVE_NOT_SUPPORTED]: Elliptic Curve is not supported

Usage

The gsk_encode_ec_parameters() routine will encode the EC domain parameters of an elliptic curve as an ASN.1 stream. The EC domain parameters will be encoded as described in SEC1 (Elliptic Curve Cryptography).