encryption - AES in java can run in windows but not in linux -
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i finished aes class decrypt or encrpyt ,and runs on windows can't run on linux throwing errors following :
given final block not padded
the full code following :
/** * aestest.java * * @author liuyincan * @time 2013-12-12 下午1:25:44 */ public class aes { public static string generatekey(int len) { try { keygenerator keygen = keygenerator.getinstance("aes"); keygen.init(len); key key = keygen.generatekey(); return parserstringutils.tohexstring(key.getencoded()); } catch (exception e) { return null; } } /** * 加密 * * @param content * 待加密内容 * @param key * 加密的密钥 * @return */ public static string encode(string content, string key) { try { keygenerator kgen = keygenerator.getinstance("aes"); kgen.init(128, new securerandom(key.getbytes())); secretkey secretkey = kgen.generatekey(); byte[] encodeformat = secretkey.getencoded(); secretkeyspec secretkeyspec = new secretkeyspec(encodeformat, "aes"); cipher cipher = cipher.getinstance("aes"); byte[] bytecontent = content.getbytes("utf-8"); cipher.init(cipher.encrypt_mode, secretkeyspec); byte[] byterresult = cipher.dofinal(bytecontent); stringbuffer sb = new stringbuffer(); (int = 0; < byterresult.length; i++) { string hex = integer.tohexstring(byterresult[i] & 0xff); if (hex.length() == 1) { hex = '0' + hex; } sb.append(hex.touppercase()); } return sb.tostring(); } catch (nosuchalgorithmexception e) { e.printstacktrace(); } catch (nosuchpaddingexception e) { e.printstacktrace(); } catch (invalidkeyexception e) { e.printstacktrace(); } catch (unsupportedencodingexception e) { e.printstacktrace(); } catch (illegalblocksizeexception e) { e.printstacktrace(); } catch (badpaddingexception e) { e.printstacktrace(); } return null; } /** * 解密 * * @param content * 待解密内容 * @param key * 解密的密钥 * @return */ public static string decode(string content, string key) { if (content.length() < 1) return null; byte[] byterresult = new byte[content.length() / 2]; (int = 0; < content.length() / 2; i++) { int high = integer.parseint(content.substring(i * 2, * 2 + 1), 16); int low = integer.parseint(content.substring(i * 2 + 1, * 2 + 2), 16); byterresult[i] = (byte) (high * 16 + low); } try { keygenerator kgen = keygenerator.getinstance("aes"); kgen.init(128, new securerandom(key.getbytes())); secretkey secretkey = kgen.generatekey(); byte[] encodeformat = secretkey.getencoded(); secretkeyspec secretkeyspec = new secretkeyspec(encodeformat, "aes"); cipher cipher = cipher.getinstance("aes"); cipher.init(cipher.decrypt_mode, secretkeyspec); byte[] result = cipher.dofinal(byterresult); return new string(result); } catch (nosuchalgorithmexception e) { e.printstacktrace(); } catch (nosuchpaddingexception e) { e.printstacktrace(); } catch (invalidkeyexception e) { e.printstacktrace(); } catch (illegalblocksizeexception e) { e.printstacktrace(); } catch (badpaddingexception e) { e.printstacktrace(); } return null; } please me fix problem or else boss fire me ,thanks lot
cipher.getinstance("aes"); - gives default implementation of aes.
somewhere between oracle java 6 , late java 7 changed form aes/ecb/nopadding aes/ecb/pkcs5padding.
change such lines to:
cipher.getinstance("aes/ecb/pkcs5padding");
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