我需要使用CBC Rijndael加密对文本进行编码/解码。Bouncycastle java编码/解码。缺少字节?
输入: 力是强在这个looooooooooooooooooo000000000oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong字符串
编码输入:†'Ú½mÎ-“AŽyÝ¢ƒô] 5X-A;“BC†.Ìμ¼èüÈíÖXÈ*©Ã¼ç,hKBμ $híƒEu-ȸU¤'AÓÈÿ?æûä¸:OW?B>ÐZ¡ ,zëë(C'®5ÐixRÉp% ì%q'ÕQÚ5μッ
解码输入: “的力量是强大的在这looooooooooooooooooo000000000ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo” - 在地方结束的32位(字节值是0)
我错过了最后的字节。谁能告诉我为什么?
这是我的代码:
公共类BouncyDecoder {
byte[] IV = null;
byte[] encryptionKey = null;
Cipher cipher;
SecretKeySpec key;
BlockCipher blockCipher;
ParametersWithIV _param;
PaddedBufferedBlockCipher mode;
int blockSize;
public BouncyDecoder() {
Security.addProvider(new BouncyCastleProvider());
try {
IV = "1234567891234567891234567891234".getBytes("UTF-8");
encryptionKey = "1234567891123453456789123456781".getBytes("UTF-8");
blockCipher = new CBCBlockCipher(new RijndaelEngine(256));
_param = new ParametersWithIV(new KeyParameter(encryptionKey), IV);
mode = new PaddedBufferedBlockCipher(blockCipher);
blockSize = blockCipher.getBlockSize();
} catch (Exception e) {
}
}
public byte[] decrypt(byte[] encodedText) {
byte[] decoded = new byte[mode.getOutputSize(encodedText.length)];
try {
mode.init(false, _param);
int bytesProcessed = 0;
int i=0;
for (i = 0; i < (encodedText.length/32) ; i++){
bytesProcessed += mode.processBytes(encodedText, i * blockSize, blockSize, decoded, bytesProcessed);
}
mode.doFinal(decoded, (i-1)*blockSize);
} catch (Exception e) {
}
return decoded;
}
public byte[] encrypt(byte[] normalText) {
byte[] encryptedText = new byte[mode.getOutputSize(normalText.length)];
try {
mode.init(true, _param);
int bytesProcessed = 0;
int i=0;
for (i = 0; i < (normalText.length/32); i++) {
bytesProcessed += mode
.processBytes(normalText, i * blockSize, blockSize, encryptedText, bytesProcessed);
}
mode.doFinal(encryptedText, (i-1)*blockSize);
} catch (Exception e) {
e.printStackTrace();
}
return encryptedText;
}
}
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