anchor.diff:  	A = crypto:exor(TEMP, OPc),
   	B = rot(A, ?r2),
   	C = crypto:exor(B, ?c2),
  -	?BLOCK_ENCRYPT(aes_cfb128, K, C, OPc).
  +	?BLOCK_ENCRYPT_CFB(K, C, OPc).
   
   -spec out3(OPc, K, TEMP) -> OUT3
   	when
  
positive.code: 	A = crypto:exor(TEMP, OPc),
  	B = rot(A, ?r3),
  	C = crypto:exor(B, ?c3),
  	?BLOCK_ENCRYPT(aes_cfb128, K, C, OPc).
  
  -spec out4(OPc, K, TEMP) -> OUT4
  	when
  
negative.code: 	A = crypto:exor(TEMP, OPc),
  	B = rot(A, ?r4),
  	C = crypto:exor(B, ?c4),
  	?BLOCK_ENCRYPT_CFB(K, C, OPc).
  
  -spec out5(OPc, K, TEMP) -> OUT5
  	when
  