cm/signed/ed25519-blake2b

    [cm/signed/] with Ed25519-BLAKE2b.

    EdDSA with Edwards25519 is used similarly as in RFC 8032.
    But BLAKE2b is used instead of SHA2-512 hash.
    => RFC 8032, EdDSA

    Strict ZIP-0215 validation rules should be used while verifying the signature.
    => ZIP-0215

    PureEdDSA *must* be used when no detached data exists and
    "ed25519-blake2b" algorithm identifier is used in signature.

    HashEdDSA *must* be used otherwise, using BLAKE2b-512 as a
    hash, using "ed25519ph-blake2b" algorithm identifier for
    signature.