How to use SIGHASH_ALL?

[shuijian-xu]

验证Point 是否有效的时候，不需要SIGHASH_ALL, 因此需要从数组中去掉，获得Der Signature

byte[] t1 = (byte[])stack.pop();
byte[] t2 =Arrays.copyOfRange(t1, 0, t1.length-1);