The family of SHA (blocked algorithm of parasitic information) is a whole of relative cryptographic functions of parasitic information. The function most generally used in the family, Sha-1, is used in a large variety of popular applications of safety and proclaims a protocol, including TLS, SSL, PGP, SSH, S/mime, and IPSec. Sha-1 is regarded as the successor with MD5, a first, employee usually function of parasitic information. The algorithms of SHA were designed by the agency of national safety (NSA) and published like normalizes government of the USA. The first member of the family, published in 1993, is called officially SHA; however, this is often called Sha-0 to avoid confusion with its successors. Two years afterwards, Sha-1, the first successor of SHA, was published. Four additional alternatives since were published with increased ranges of output and a slightly different design: Sha-224, Sha-256, Sha-384, and Sha-512 -- sometimes collectively indicated under the name of Sha-2. Attacks for were found Sha-0 and Sha-1. No attack still was returned Sha-2 account of the alternatives, but since they are similar to Sha-1, researchers is worried, and develops candidates for a news, better standard of jamming.