DES decryption, but the key is 36 bytes. How can this problem be solved?

I used php to decrypt the connection with the java client. The key is 36 bytes, so I have no clue. I think there is a general method to convert these 36 bytes into 16 or 32 bytes? Thank you. The following is a java code snippet: {code ...} execution method: {code ...} class: {code... I used php to decrypt the connection with the java client. The key is 36 bytes, so I have no clue. I think there is a general method to convert these 36 bytes into 16 or 32 bytes? Thank you.

The following is a java code snippet:

Public static String DES_KEY = "36-bit key ";

Execution method:

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

Class:

    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();         }}

Reply content:

I used php to decrypt the connection with the java client. The key is 36 bytes, so I have no clue. I think there is a general method to convert these 36 bytes into 16 or 32 bytes? Thank you.

The following is a java code snippet:

Public static String DES_KEY = "36-bit key ";

Execution method:

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

Class:

    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();         }}

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