std/signature/error
std/signature/src/error.trb
SignatureError: why bytes or a text are not an Ed25519 key or signature.
type SignatureError
type SignatureError with Show, ErrorWhy bytes or a text are not an Ed25519 key or signature. A failed verification is not one: verifies of a public key
answers false, since a signature that does not verify has nothing more to say.
case WrongLength
case WrongLength(what: String, expected: Int, found: Int)what has expected bytes, and found were given.
case NotHexadecimal
case NotHexadecimal(what: String, reason: String)The text of what is not two hexadecimal digits per byte: reason says where.
case NotAPoint
case NotAPointThe 32 bytes of a public key do not encode a point of the curve, or not in the one canonical way.
case ScalarOutOfRange
case ScalarOutOfRangeThe S half of a signature is not below the group order L, which RFC 8032 section 5.1.7 refuses.
fn show
fn show(): StringOne line: what was expected, and what was there instead.