The digital signature method

Digital signatures are a lot of ways, the current use of digital signatures is more public-key encryption technology, such as RSA Date Security based on the company's PKCS (Public Key Cryptography Standards), Digital Signature Algorithm, x.509, PGP (Pretty Good Privacy). In 1994 the United States Institute of Standards and Technology published the Digital Signature Standard by the wider use of public key cryptography. Public key encryption system used in non-symmetric encryption algorithm.