How to Use Digital Signatures with Message Encryption
Message Encryption is the process of encoding sent messages and documents (such as emails) so that only the intended recipient can decode and read it. This can be done with the use of encryption protocols like PGP and S/MIME. They allow for a user to generate public and private keys which are used for encryption and decryption respectively. Message encryption performs the following functions: - Privacy: Encryption ensures that only the person for whom the message is intended can decrypt and read it. - Prevention of Tampering: An encoded message or document usually cannot be altered in transit. However, the use of some types of encryption algorithm renders messages susceptible to tampering. A Digital Signature is a way of providing authenticity to messages and digital documents. It is the digital equivalent of physically signing a letter or a document. It has the following functions: - Authentication of Emails and Documents: ...