Encryption message in java -

i project using java's bouncycastle encryption.

however, when encrypt message, throws exception me.

javax.crypto.illegalblocksizeexception: data not block size aligned

i using blowfish/ecb/nopadding, , message xml.

public static void main(string args[]){       string message = "<abc>abcdefg</abc>";       string key = "key";       byte[] b = encrypt(message.getbytes(), key.getbytes()); }  public byte[] encrypt(byte encrypt[], byte en_key[]) {       try {             secretkeyspec key = new secretkeyspec(en_key, "blowfish");             cipher cipher = cipher.getinstance("blowfish/ecb/nopadding");             cipher.init(cipher.encrypt_mode, en_key);             return cipher.dofinal(encrypt);       } catch (exception e) {             e.printstacktrace();            return null;           }  }  

could can me?

thank you

you using nopadding , size of input data must not match block size of cipher, illegalblocksizeexception being thrown. if use nopadding need make sure input multiple of 8 bytes.

specify padding scheme. change blowfish/cbc/pkcs5padding , should work.

padding manually null bytes:
create new array bigger size multiple of 8 , copy old array it.

public static byte[] encrypt(byte encrypt[], byte en_key[]) {      if(encrypt.length % 8 != 0){ //not multiple of 8         //create new array size multiple of 8         byte[] padded = new byte[encrypt.length + 8 - (encrypt.length % 8)];          //copy old array         system.arraycopy(encrypt, 0, padded, 0, encrypt.length);         encrypt = padded;     }      try {         secretkeyspec key = new secretkeyspec(en_key, "blowfish");         cipher cipher = cipher.getinstance("blowfish/ecb/nopadding");         cipher.init(cipher.encrypt_mode, key);         return cipher.dofinal(encrypt);     } catch (exception e) {         e.printstacktrace();         return null;     } }