len(message); l != sha512Size { return errors.New("ed25519: bad Ed25519ph message hash length: " + strconv.Itoa(l)) } if l := len(context); l > 255 { return errors.New("ed25519: bad Ed25519ph context length: " + strconv.Itoa(l)) } return verifyWithDom(pub, message, sig, domPrefixPh, context) } func VerifyCtx(pub *PublicKey, message []byte, sig []byte, context string) error { fipsSelfTest() // FIPS 186-5 specifies Ed25519 and Ed25519ph (with context), but not Ed25519ctx. fips140.RecordNonApproved()...