fun KeyPair.sign(bytesToSign: ByteArray): WithKey
Helper function to sign with a key pair.
bytesToSign - the data/message to be signed in ByteArray form (usually the Merkle root).
IllegalArgumentException - if the signature scheme is not supported for this private key.
InvalidKeyException - if the private key is invalid.
SignatureException - if signing is not possible due to malformed data or private key.
Return
the digital signature (in ByteArray) on the input message.
fun KeyPair.sign(bytesToSign: OpaqueBytes): WithKey
Helper function to sign the bytes of bytesToSign with a key pair.
fun KeyPair.sign(signableData: SignableData): TransactionSignature
Helper function for signing a SignableData object.
signableData - the object to be signed.
IllegalArgumentException - if the signature scheme is not supported for this private key.
InvalidKeyException - if the private key is invalid.
SignatureException - if signing is not possible due to malformed data or private key.
Return
a TransactionSignature object.