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sha256 for oracle

Posted on 2012-03-21
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Is there sample coding using sha256 for oracle, please show me.
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Question by:Renshi04
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by:sdstuber
sdstuber earned 2000 total points
ID: 37752674
there is no built in sha256 in Oracle,  dbms_crypto only has sha-1  support.

You could use a java stored procedure though
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sdstuber earned 2000 total points
ID: 37752944
The java might looks something like this...
for production use you'll probably want to include some exception handlers but this is the core of it.


CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED sha256 AS
import java.security.MessageDigest;
import oracle.sql.*;

public class sha256
{
   public static oracle.sql.RAW get_digest( String p_string ) throws Exception
   {
      MessageDigest v_md = MessageDigest.getInstance( "SHA-256" );
      byte[] v_digest;
      v_digest = v_md.digest( p_string.getBytes( "UTF-8" ) );
      return RAW.newRAW(v_digest);
   }  
}
/


CREATE OR REPLACE FUNCTION sha256_digest(p_string VARCHAR2)
    RETURN RAW
AS
    LANGUAGE JAVA
    NAME 'sha256.get_digest( java.lang.String ) return oracle.sql.RAW';
/


SELECT sha256_digest('this is my test string') FROM DUAL;
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