What one-way hash function to use?
Posted by Jonas Elfström Tue, 27 Feb 2007 16:01:00 GMT
Cryptographic hash function takes a message of any length as input and outputs a very large but fixed length number. That number is called a message digest, fingerprint, or sometimes a cryptographic hash. They can be used to represent passwords without having to know the actual password. Such a hash can also be used as signature that makes it possible to verify that the content of a message hasn't been tampered with.
require 'digest/sha2' quickfox="The quick brown fox jumps over the lazy dog" Digest::SHA256.hexdigest(quickfox)
ASCIIEncoding byteConverter = new ASCIIEncoding(); string quickfox="The quick brown fox jumps over the lazy dog"; HashAlgorithm sha256 = new SHA256Managed(); byte hash = sha256.ComputeHash(byteConverter.GetBytes(quickfox)); crypt.Text = Convert.ToBase64String(hash);