Digital signature is based on public key system

Digital signature is based on public key system

Digital Signature is a public-key encryption technology, the other applications. Its main way that the message from the sender of the message text to generate a 128-bit hash value (or message digest). To send in their own private key of the hash value is encrypted to form a sender's digital signature. Then, the digital signature will serve as a message of the Annex and the message to send to the recipient of the message. The message from the first recipient to receive the original message out in 128-bit hash value (or message digest), and then re-use sender's public key to the message attached to the digital signature to decrypt. If the two hash values of the same, then the recipient will be able to confirm the digital signature is the sender. Can be achieved through the digital signature on the identification of the original message.