DES解密，但是key是36位元組的，怎麼處理？

和java端進行對接的，我用php解密，key是36位元組的，所以沒有頭緒了。我想著是不是有把這36位元組轉化成16或者32位元組的通用方法？先謝謝大家了。

下面是java的程式碼片段：

public static String DES_KEY="36位的key";

執行方法：

DesUtil.decrypt(rs.getString(i+1),Global.DES_KEY );

類：

    public class DesUtil {             private final static String DES = "DES";             private final static String PADDING="DES/ECB/PKCS5Padding";             private final static Log log= LogFactory.getLog(DesUtil.class);             public static byte[] encrypt(byte[] src, byte[] key)throws Exception {                     SecureRandom sr = new SecureRandom();                    DESKeySpec dks = new DESKeySpec(key);                     SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);                     SecretKey securekey = keyFactory.generateSecret(dks);                     Cipher cipher = Cipher.getInstance(PADDING);                     cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);                     return cipher.doFinal(src);                  }                public static byte[] decrypt(byte[] src, byte[] key)throws Exception {                     SecureRandom sr = new SecureRandom();                     DESKeySpec dks = new DESKeySpec(key);                    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);                     SecretKey securekey = keyFactory.generateSecret(dks);                     Cipher cipher = Cipher.getInstance(PADDING);                     cipher.init(Cipher.DECRYPT_MODE, securekey, sr);                   return cipher.doFinal(src);                  }              public final static String decrypt(String data,String key){                  try {                           return new String(decrypt(Base64.decode(data.getBytes()),                      key.getBytes()));                 }catch(Exception e) {                            log.error("Exception -->DesUtil");                       e.printStackTrace();                 }                 return null;               }               public final static String decrypt(String data,String key, String charset){                  try {                           return new String(decrypt(Base64.decode(data.getBytes()),                      key.getBytes()), charset);                 }catch(Exception e) {                          log.error("Exception -->DesUtil ");                          e.printStackTrace();                 }                 return null;               }               public final static String encrypt(String code,String key){                 try {                   return Base64.encodeBytes(encrypt(code.getBytes("utf-8"), key.getBytes()));                 }catch(Exception e) {                          log.error("Exception -->DesUtil");                          e.printStackTrace();                 }                 return null;               }/*    public static void main(String[] args) {         /**         * Convert byte[] string         *          * @param src         * @return         */         public static String bytesTo16HexString(byte[] src) {                   StringBuilder stringBuilder = new StringBuilder("");                   if (src == null || src.length <= 0) {                            return "";                   }                   for (int i = 0; i < src.length; i++) {                            int v = src[i] & 0xFF;                            String hv = Integer.toHexString(v);                            if (hv.length() < 2) {                                     stringBuilder.append(0);                            }                            stringBuilder.append(hv);                   }                   return stringBuilder.toString();         }}

回複內容：

和java端進行對接的，我用php解密，key是36位元組的，所以沒有頭緒了。我想著是不是有把這36位元組轉化成16或者32位元組的通用方法？先謝謝大家了。

下面是java的程式碼片段：

public static String DES_KEY="36位的key";

執行方法：

DesUtil.decrypt(rs.getString(i+1),Global.DES_KEY );

類：

    public class DesUtil {             private final static String DES = "DES";             private final static String PADDING="DES/ECB/PKCS5Padding";             private final static Log log= LogFactory.getLog(DesUtil.class);             public static byte[] encrypt(byte[] src, byte[] key)throws Exception {                     SecureRandom sr = new SecureRandom();                    DESKeySpec dks = new DESKeySpec(key);                     SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);                     SecretKey securekey = keyFactory.generateSecret(dks);                     Cipher cipher = Cipher.getInstance(PADDING);                     cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);                     return cipher.doFinal(src);                  }                public static byte[] decrypt(byte[] src, byte[] key)throws Exception {                     SecureRandom sr = new SecureRandom();                     DESKeySpec dks = new DESKeySpec(key);                    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);                     SecretKey securekey = keyFactory.generateSecret(dks);                     Cipher cipher = Cipher.getInstance(PADDING);                     cipher.init(Cipher.DECRYPT_MODE, securekey, sr);                   return cipher.doFinal(src);                  }              public final static String decrypt(String data,String key){                  try {                           return new String(decrypt(Base64.decode(data.getBytes()),                      key.getBytes()));                 }catch(Exception e) {                            log.error("Exception -->DesUtil");                       e.printStackTrace();                 }                 return null;               }               public final static String decrypt(String data,String key, String charset){                  try {                           return new String(decrypt(Base64.decode(data.getBytes()),                      key.getBytes()), charset);                 }catch(Exception e) {                          log.error("Exception -->DesUtil ");                          e.printStackTrace();                 }                 return null;               }               public final static String encrypt(String code,String key){                 try {                   return Base64.encodeBytes(encrypt(code.getBytes("utf-8"), key.getBytes()));                 }catch(Exception e) {                          log.error("Exception -->DesUtil");                          e.printStackTrace();                 }                 return null;               }/*    public static void main(String[] args) {         /**         * Convert byte[] string         *          * @param src         * @return         */         public static String bytesTo16HexString(byte[] src) {                   StringBuilder stringBuilder = new StringBuilder("");                   if (src == null || src.length <= 0) {                            return "";                   }                   for (int i = 0; i < src.length; i++) {                            int v = src[i] & 0xFF;                            String hv = Integer.toHexString(v);                            if (hv.length() < 2) {                                     stringBuilder.append(0);                            }                            stringBuilder.append(hv);                   }                   return stringBuilder.toString();         }}

用冗餘字元補全到48位元組。

