The SHA-1 data processor calculates the SHA-1 sum of the source column data.
In cryptography, SHA-1 is a cryptographic hash function designed by the United States National Security Agency and published by the United States NIST as a U.S. Federal Information Processing Standard. SHA stands for "secure hash algorithm". SHA-1 is the most widely used of the existing SHA hash functions, and is employed in several widely used applications and protocols.
