anchor.diff:  	A = crypto:exor(TEMP, OPc),
   	B = rot(A, ?r5),
   	C = crypto:exor(B, ?c5),
  -	?BLOCK_ENCRYPT(aes_cfb128, K, C, OPc).
  +	?BLOCK_ENCRYPT_CFB(K, C, OPc).
   
   -spec rot(X, R) -> binary()
   	when
  
positive.code: 	A = crypto:exor(TEMP, OPc),
  	B = rot(A, ?r2),
  	C = crypto:exor(B, ?c2),
  	?BLOCK_ENCRYPT(aes_cfb128, K, C, OPc).
  
  -spec out3(OPc, K, TEMP) -> OUT3
  	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
  