Base64 Encoding is different in Java and C# how to get same? [duplicate]

StackOverflow https://stackoverflow.com/questions/23646997

题

in C#:

encryptionKey="Wb2bLNGXABcl4Lz........AxqA5Xhsoqi7w52RKA=";

var key = Convert.FromBase64String(encryptionKey);

key value={89,189,155,44,209,151,0,23,37,224,188,250,186,104,35,70,250,81,212,12,106,3,149,225,178,138,162,239,14,118,68,160}

in java: 

byte[] key= Base64.decodeBase64(encryptionKey);

key={89,-67,-101,44,-47,-105,0,23,37,-32,-68,-6,-70,104,-21,70,-6,81,-44,12,106,3,-107,-31,-78,-118,-94,-17,14,118,68,-96};

key value is different in Java and C#. how to get same value in Java?

有帮助吗？

解决方案

It's the same. In the first case bytes are unsigned and Java bytes are signed. What we see in array is different interpretation of the same value, eg 189 and -67 = 0xBD

byte b = (byte) 189;

now b = -67

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