Describes an elliptic curve-based signature algorithm that may be
used in a
Certificate issued
from a CaPool.
Values:
EC_SIGNATURE_ALGORITHM_UNSPECIFIED (0):
Not specified. Signifies that any signature
algorithm may be used.
ECDSA_P256 (1):
Refers to the Elliptic Curve Digital
Signature Algorithm over the NIST P-256 curve.
ECDSA_P384 (2):
Refers to the Elliptic Curve Digital
Signature Algorithm over the NIST P-384 curve.
EDDSA_25519 (3):
Refers to the Edwards-curve Digital Signature
Algorithm over curve 25519, as described in RFC
8410.