Get the signature of the transaction packet
This does a rudimentry verification to make sure the packet at least
contains the signature data and it returns the reference to the signature.
Check if a transaction given its signature matches the randomly selected mask.
The signaure should be from the reference of Signature
Check if a transaction packet’s signature matches the mask.
This does a rudimentry verification to make sure the packet at least
contains the signature data and it returns the reference to the signature.