Examples of java.security.Signature.update()

java.security.Signature.update()
Updates the data to be signed or verified by a byte. @param b the byte to use for the update. @exception SignatureException if this signature object is not initialized properly.

      // Sort roles before adding it to the signature to preserve the order
      Arrays.sort(roles);
    }
    for (int r = 0; r < roles.length; r++) {
      try {
        signature.update(((String)roles[r]).getBytes());
      } catch (SignatureException e) {
        if (logger.isLoggable(BasicLevel.ERROR))
          logger.log(BasicLevel.ERROR, "EXCEPTION:: validate", e);
        throw new Exception("Cannot add the bytes for the role '" + roles[r] + "' : " + e.getMessage());
      }

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            break;
          }
          
          if ( output == null ){
            
            sig.update( buffer, 0, len );
            
          }else{
            
            output.write( buffer, 0, len );
          }

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    Signature  sig = Signature.getInstance("MD5withRSA" );


    sig.initVerify( public_key );
    
    sig.update( data.getBytes( "UTF-8" ));
      
    if ( !sig.verify( signature )){
      
      throw( new AEVerifierException( AEVerifierException.FT_SIGNATURE_BAD, "Data verification failed, signature doesn't match data" ));
    }

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            ByteArrayOutputStream   bOut = new ByteArrayOutputStream();
            DEROutputStream         dOut = new DEROutputStream(bOut);


            dOut.writeObject(tbsCert);


            sig.update(bOut.toByteArray());
        }
        catch (Exception e)
        {
            throw new SecurityException("exception encoding TBS cert - " + e);
        }

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    }


    Signature sig = Signature.getInstance(getSigAlgName(), sigProvider);


    sig.initVerify(key);
    sig.update(this.getTBSCertList());
    if ( !sig.verify(this.getSignature()) )
    {
      throw new SignatureException("CRL does not verify with supplied public key.");
    }
  }

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        remotePubKey = CryptoECCUtils.rawdataToPubkey(rawRemoteOtherPubkey);
        
        Signature check = CryptoECCUtils.getSignature(remotePubKey); 
  
        check.update(rawRemoteOtherPubkey);
        
        check.update(rawRemoteEphemeralPubkey);
        
        if ( check.verify(remoteSig)){

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        Signature check = CryptoECCUtils.getSignature(remotePubKey); 
  
        check.update(rawRemoteOtherPubkey);
        
        check.update(rawRemoteEphemeralPubkey);
        
        if ( check.verify(remoteSig)){
                    
          ecDH.doPhase(CryptoECCUtils.rawdataToPubkey(rawRemoteEphemeralPubkey), true);

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        final byte[] remoteSig = getBytes( message, 65535);
              
        Signature check = CryptoECCUtils.getSignature( remotePubKey );
        
        check.update(IV);
          
        check.update(sharedSecret);
          
        if ( !check.verify(remoteSig)){

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        Signature check = CryptoECCUtils.getSignature( remotePubKey );
        
        check.update(IV);
          
        check.update(sharedSecret);
          
        if ( !check.verify(remoteSig)){
  
          throw( new CryptoManagerException( "Signature check failed" ));
        }

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        final byte[] rawMyPubkey = CryptoECCUtils.keyToRawdata(myPublicKey);
        
        final byte[] rawEphemeralPubkey = CryptoECCUtils.keyToRawdata(ephemeralKeyPair.getPublic());
        
        sig.update(rawMyPubkey);
          
        sig.update(rawEphemeralPubkey);
          
        final byte[] rawSign = sig.sign();

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