She produces a hash value of the message , raises it to the power of -LRB- as she does when decrypting a message -RRB- , and attaches it as a `` signature '' to the message .

She produces a hash value of the message , raises it to the power of d mod n -LRB- just like when decrypting a message -RRB- , and attaches it as a `` signature '' to the message .
