NAME: SHA-256
CREATOR: NIST and NSA
PB AUTHOR: Greg Turgeon
DESCRIPTION: Creates a 256-bit hash (message digest) from messages up to 264 bits
NOTES: Produces a message digest of 256 bits, providing no more than 128 bits of security against collision attacks.
SOURCE: http://www.powerbasic.com/support/forums/Forum7/HTML/000812.html