What about the AES decryption exception Given final block not properly padded
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On-line encryption and decryption of AES 128Blue192 and256-bit CBC/CFB/ECB/OFB/PCBC
Decrypted content: 1243CFEBD819AA6B1C717DE870459F7B
Secret key: http://www.it399.com
No fill vector iv is used
AES decryption exception Given final block not properly padded
Javax.crypto.BadPaddingException: Given final block not properly padded
At com.sun.crypto.provider.CipherCore.doFinal (CipherCore.java:966)
At com.sun.crypto.provider.CipherCore.doFinal (CipherCore.java:824)
At com.sun.crypto.provider.AESCipher.engineDoFinal (AESCipher.java:436)
At javax.crypto.Cipher.doFinal (Cipher.java:2165)
Reason: decryption directly to the input hexadecimal value: 1243CFEBD819AA6B1C717DE870459F7B took getBytes, so the length of the byte array obtained is 16, can not be operated directly.
InputValue.getBytes (AESUtil.CHARSET)
You need to convert the hexadecimal to-byte array so that the content is 32 bits, and it is different from the byte array directly obtained before.
TypeConvert.hexStringToBytes (inputValue)
Hexadecimal rotation byte array method
/ * *
* Convert hex string to byte []
*
* @ param hexString the hex string
* @ return byte []
, /
Public static byte [] hexStringToBytes (String hexString) {
If (hexString = = null | | hexString.equals ("")) {
Return null
}
HexString = hexString.toUpperCase ()
Int length = hexString.length () / 2
Char [] hexChars = hexString.toCharArray ()
Byte [] d = new byte [length]
For (int I = 0; I < length; iTunes +) {
Int pos = I * 2
D [I] = (byte) (charToByte (hexChars [pos]))
