Function SHA.start
SHA initialization. Begins an SHA1/SHA2 operation.
Prototype
void start();
Note
For this SHA Digest implementation calling start after default construction
is not necessary. Calling start is only necessary to reset the Digest.
Generic code which deals with different Digest types should always call start though.
Examples
SHA1 digest; //digest.start(); //Not necessary digest.put(0);
Authors
The routines and algorithms are derived from the Secure Hash Signature Standard (SHS) (FIPS PUB 180-2). Kai Nacke, Johannes Pfau, Nick Sabalausky