PHP代码
1 <?php 2 //DES加解密工具 3 class DesEncrypt { 4 var $key; 5 var $iv; 6 function DesEncrypt($key, $iv=0) { 7 $this->key = $key; 8 if($iv == 0){ 9 $this->iv = $key; 10 }else{ 11 $this->iv = $iv; 12 } 13 } 14 function encrypt($input) { 15 $size = mcrypt_get_block_size('des', 'ecb'); 16 $input = $this->pkcs5_pad($input, $size); 17 $td = mcrypt_module_open('des', '', 'ecb', ''); 18 $iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND); 19 @mcrypt_generic_init($td, $this->key, $iv); 20 $data = mcrypt_generic($td, $input); 21 mcrypt_generic_deinit($td); 22 mcrypt_module_close($td); 23 $data = base64_encode($data); 24 return $data; 25 26 } 27 function decrypt($encrypted) { 28 $encrypted = base64_decode($encrypted); 29 $td = mcrypt_module_open('des','','ecb',''); 30 //使用MCRYPT_DES算法,cbc模式 31 $iv = @mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND); 32 $ks = mcrypt_enc_get_key_size($td); 33 $key = substr($this->key, 0, $ks); 34 $rs = @mcrypt_generic_init($td, $key, $iv); 35 //初始处理 36 $decrypted = mdecrypt_generic($td, $encrypted); 37 //解密 38 mcrypt_generic_deinit($td); 39 //结束 40 mcrypt_module_close($td); 41 $y=$this->pkcs5_unpad($decrypted); 42 return $y; 43 } 44 function pkcs5_pad ($text, $blocksize) { 45 $pad = $blocksize - (strlen($text) % $blocksize); 46 return $text . str_repeat(chr($pad), $pad); 47 } 48 function pkcs5_unpad($text) { 49 $pad = ord($text{strlen($text)-1}); 50 if ($pad > strlen($text)) 51 return false; 52 if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) 53 return false; 54 return substr($text, 0, -1 * $pad); 55 } 56 } 57 58 $key = "123456789012345678901234567890123456"; //36位 59 $crypt = new DesEncrypt($key); 60 $str = "中国"; 61 $mstr = $crypt->encrypt($str); 62 echo "密文:" . $mstr . "<br/>"; 63 64 $str = $crypt->decrypt($mstr); 65 echo "明文:" . $str;
结果：
密文:Rm+8trB4CBQ=
明文:中国
Java代码
1 package com.util; 2 import java.security.Key; 3 import java.security.SecureRandom; 4 5 import javax.crypto.Cipher; 6 import javax.crypto.SecretKeyFactory; 7 import javax.crypto.spec.DESKeySpec; 8 9 import org.apache.commons.codec.binary.Base64; 10 11 import com.util.DesEncrypt; 12 13 /** 14 * 加密解密 15 * @author bian 16 * 2015 上午11:13:36 17 */ 18 public class DesEncrypt { 19 Key key; 20 public DesEncrypt(String str) { 21 try{ 22 String key = str; 23 setKey(key);// 生成密匙 24 }catch(Exception e){ 25 26 } 27 } 28 29 public DesEncrypt() { 30 setKey("heimazhifuqw233344"); 31 } 32 33 /** 34 * 根据参数生成KEY 35 */ 36 public void setKey(String strKey) { 37 try { 38 SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES"); 39 this.key = keyFactory.generateSecret(new DESKeySpec(strKey.getBytes("UTF8"))); 40 } catch (Exception e) { 41 throw new RuntimeException( 42 "Error initializing SqlMap class. Cause: " + e); 43 } 44 } 45 46 47 /** 48 * 加密String明文输入,String密文输出 49 */ 50 public String encrypt(String strMing) { 51 byte[] byteMi = null; 52 byte[] byteMing = null; 53 String strMi = ""; 54 //BASE64Encoder base64en = new BASE64Encoder(); 55 try { 56 byteMing = strMing.getBytes("UTF8"); 57 byteMi = this.getEncCode(byteMing); 58 strMi = new String(Base64.encodeBase64(byteMi), "UTF8"); 59 } catch (Exception e) { 60 throw new RuntimeException( 61 "Error initializing SqlMap class. Cause: " + e); 62 } finally { 63 //base64en = null; 64 byteMing = null; 65 byteMi = null; 66 } 67 return strMi; 68 } 69 70 /** 71 * 解密 以String密文输入,String明文输出 72 * 73 * @param strMi 74 * @return 75 */ 76 public String decrypt(String strMi) { 77 ///BASE64Decoder base64De = new BASE64Decoder(); 78 byte[] byteMing = null; 79 byte[] byteMi = null; 80 String strMing = ""; 81 try { 82 byteMi = Base64.decodeBase64(strMi); 83 byteMing = this.getDesCode(byteMi); 84 strMing = new String(byteMing, "UTF8"); 85 } catch (Exception e) { 86 throw new RuntimeException( 87 "Error initializing SqlMap class. Cause: " + e); 88 } finally { 89 //base64De = null; 90 byteMing = null; 91 byteMi = null; 92 } 93 return strMing; 94 } 95 96 /** 97 * 加密以byte[]明文输入,byte[]密文输出 98 * 99 * @param byteS 100 * @return 101 */ 102 private byte[] getEncCode(byte[] byteS) { 103 byte[] byteFina = null; 104 Cipher cipher; 105 try { 106 cipher = Cipher.getInstance("DES"); 107 cipher.init(Cipher.ENCRYPT_MODE, key,SecureRandom.getInstance("SHA1PRNG")); 108 byteFina = cipher.doFinal(byteS); 109 } catch (Exception e) { 110 throw new RuntimeException( 111 "Error initializing SqlMap class. Cause: " + e); 112 } finally { 113 cipher = null; 114 } 115 return byteFina; 116 } 117 118 /** 119 * 解密以byte[]密文输入,以byte[]明文输出 120 * 121 * @param byteD 122 * @return 123 */ 124 private byte[] getDesCode(byte[] byteD) { 125 Cipher cipher; 126 byte[] byteFina = null; 127 try { 128 cipher = Cipher.getInstance("DES"); 129 cipher.init(Cipher.DECRYPT_MODE, key,SecureRandom.getInstance("SHA1PRNG")); 130 byteFina = cipher.doFinal(byteD); 131 } catch (Exception e) { 132 throw new RuntimeException( 133 "Error initializing SqlMap class. Cause: " + e); 134 } finally { 135 cipher = null; 136 } 137 return byteFina; 138 } 139 140 141 142 public static void main(String args[]) { 143 String key = "123456789012345678901234567890123456";//36位 144 String str = "中国"; 145 DesEncrypt des = new DesEncrypt(key); 146 147 // DES加密 148 String mStr = des.encrypt(str); 149 // DES解密 150 String deStr = des.decrypt(mStr); 151 152 System.out.println("密文:" + mStr); 153 System.out.println("明文:" + deStr); 154 } 155 }
结果：
密文:Rm+8trB4CBQ=
明文:中国
