# Module: Google::Cloud::Security::PrivateCA::V1::CaPool::IssuancePolicy::AllowedKeyType::EcKeyType::EcSignatureAlgorithm

- Defined in:
- proto_docs/google/cloud/security/privateca/v1/resources.rb

## Overview

Describes an elliptic curve-based signature algorithm that may be used in a Certificate issued from a CaPool.

## Constant Summary collapse

- EC_SIGNATURE_ALGORITHM_UNSPECIFIED =
Not specified. Signifies that any signature algorithm may be used.

`0`

- ECDSA_P256 =
Refers to the Elliptic Curve Digital Signature Algorithm over the NIST P-256 curve.

`1`

- ECDSA_P384 =
Refers to the Elliptic Curve Digital Signature Algorithm over the NIST P-384 curve.

`2`

- EDDSA_25519 =
Refers to the Edwards-curve Digital Signature Algorithm over curve 25519, as described in RFC 8410.

`3`