Security.addProvider(new com.sun.crypto.provider.SunJCE());
Key key = new SecretKeySpec(secretKey.getBytes(), "DES");
encryptCipher = Cipher.getInstance("DES");
encryptCipher.init(Cipher.ENCRYPT_MODE, key);
Key key = new SecretKeySpec(secretKey.getBytes(), "DES");
encryptCipher = Cipher.getInstance("DES");
encryptCipher.init(Cipher.ENCRYPT_MODE, key);
8个密钥字符串，
3des是最少是16个密钥字符串。这个是关键。
基本思路：签约号取后10位+yyMMdd 16位作为des密钥，生成密钥的话就是8个密钥串。