Secure Hash Algorithm; a hashing algorithm that produces a 160-bit digest based upon the input. The algorithm produces SHA passwords that are irreversible or prohibitively expensive to reverse.
a popular algorithm used to generate Digital Signatures. SHA-1 produces a 160-bit hash value. This produces a larger message digest, making it more secure, but slightly slower that the MD5 algorithm.
A hash algorithm developed by the National Institute of Standards and Technology and the National Security Agency. See Certificate, Digital Signature.