SHA of Message digest algorithm for information encryption

SHA is an implementation of the Message digest algorithm, which has already summed up the implementation of MD2\4\5, and then summarizes SHA's implementation for you.

The JDK implementation of SHA:

Private Static void sha_jdk () {        try  {            = messagedigest.getinstance ("SHA");   We can get different message digest key             digest.update (Src.getbytes ()) through sha\sha-1\sha-384\sha-256\sha-512;            System.out.println ("SHA:" +hex.encodehexstring (Digest.digest ()));         Catch (nosuchalgorithmexception e) {            e.printstacktrace ();        }    }

The BC implementation of SHA:

Private Static void SHA_BC () {        new  sha1digest ();         0, Src.getbytes (). length);         byte New byte [Digest.getdigestsize ()];         0);        System.out.println ("shabyte:" +hex.encodehexstring (shabyte));    }

There is no implementation for the Sha224,java JDK, the following are the methods implemented using BC:

Private Static void SHA224_BC () {        new  sha224digest ();         0, Src.getbytes (). length);         byte New byte [Digest.getdigestsize ()];         0);        System.out.println ("sha224byte:" +hex.encodehexstring (sha224byte));    }

There is also a JDK-like implementation for SHA224:

Private Static void sha224_bc_jdk () {        security.addprovider(new  Bouncycastleprovider ());         Try {            = messagedigest.getinstance ("SHA-224");            Digest.update (Src.getbytes ());            System.out.println ("SHA224_BC_JDK:" +hex.encodehexstring (Digest.digest ()));         Catch (nosuchalgorithmexception e) {            e.printstacktrace ();        }    }

Finally, a brief introduction to the CC's SHA implementation:

private static void Sha_cc_byte () {System.out.println ("SHA_CC_BYTE_SHA1:" +digestutils.sha1hex (Src.getbytes ())); System.out.println ("sha_cc_byte_sha256:" +digestutils.sha256hex (Src.getbytes ())); System.out.println ("sha_cc_byte_sha384:" +digestutils.sha384hex (Src.getbytes ())); System.out.println ("sha_cc_byte_sha512:" +digestutils.sha512hex (Src.getbytes ()));} private static void Sha_cc () {System.out.println ("SHA_CC_SHA1:" +digestutils.sha1hex (SRC)); System.out.println ("sha_cc_sha256:" +digestutils.sha256hex (SRC)); System.out.println ("sha_cc_sha384:" +digestutils.sha384hex (SRC)); System.out.println ("sha_cc_sha512:" +digestutils.sha512hex (SRC));}

Here Sha's implementation summary is complete.

SHA of Message digest algorithm for information encryption