Static PKCS_ECDSA_P521_SHA256 

pub static PKCS_ECDSA_P521_SHA256: SignatureAlgorithm

Available on crate feature rustls and (crate features aws-lc or ring) and crate feature aws_lc_rs only.

ECDSA signing using the P-521 curves and SHA-256 hashing as per RFC 5758

Note that this algorithm is not widely supported, and is not supported in TLS 1.3.

Only supported with the aws_lc_rs backend.