ica_ec_key_new
Purpose
Creates an ICA_EC_KEY data structure for a new elliptic curve key.
Format
ICA_EC_KEY* ica_ec_key_new(unsigned int nid,
unsigned int *privlen);Required hardware support
None.
Parameters
- unsigned int nid
- The identifier of the elliptic curve, on which the new key (
ICA_EC_KEY) shall be based. These identifiers are defined by OpenSSL.NID value NID name (OpenSSL) Elliptic curve D length (bytes) 409 NID_X9_62_prime192v secp192r1 24 713 NID_secp224r1 secp224r1 28 415 NID_X9_62_prime256v1 secp256r1 32 715 NID_secp384r1 secp384r1 48 716 NID_secp521r1 secp521r1 66 921 NID_brainpoolP160r1 brainpoolP160r1 20 923 NID_brainpoolP192r1 brainpoolP192r1 24 925 NID_brainpoolP224r1 brainpoolP224r1 28 927 NID_brainpoolP256r1 brainpoolP256r1 32 929 NID_brainpoolP320r1 brainpoolP320r1 40 931 NID_brainpoolP384r1 brainpoolP384r1 48 933 NID_brainpoolP512r1 brainpoolP512r1 64 - unsigned int *privlen
- Pointer to an unsigned integer buffer where the length of the private
Dvalue of the key (ICA_EC_KEY) is returned.
Note: The lengths of
X and Y are the same as the length of
D. Therefore, the public key (X,Y) has twice the
length of D. Also, an ECDSA signature has twice the length of
D.Return codes
Returns a pointer to the opaque ICA_EC_KEY structure if successful.
Returns NULL if no memory could be allocated.
For return codes indicating exceptions, see Return codes.