SignatureAlgorithm

The algorithm that the client should use / has used to sign data using its private key for proof-of-posession.

Enums
SIGNATURE_ALGORITHM_UNSPECIFIED Default value. This value is unused.
SIGNATURE_ALGORITHM_RSA_PKCS1_V1_5_SHA256 The server-side builds the PKCS#1 DigestInfo and sends a SHA256 hash of it to the client. The client should sign using RSA with PKCS#1 v1.5 padding.
SIGNATURE_ALGORITHM_ECDSA_SHA256 The server-side builds the PKCS#1 DigestInfo and sends it unhashed to the client. The client is responsible for signing and hashing using the P-256 curve.