php、java、android、ios通用的3des方法(推荐)

 pkcs5_pad($input, $size); $key = str_pad($this->key,24,'0'); $td = mcrypt_module_open(MCRYPT_3DES, '', MCRYPT_MODE_CBC, ''); if( $this->iv == '' ) { $iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND); } else { $iv = $this->iv; } @mcrypt_generic_init($td, $key, $iv); $data = mcrypt_generic($td, $input); mcrypt_generic_deinit($td); mcrypt_module_close($td); $data = base64_encode($data); return $data; } function decrypt($encrypted){ $encrypted = base64_decode($encrypted); $key = str_pad($this->key,24,'0'); $td = mcrypt_module_open(MCRYPT_3DES,'',MCRYPT_MODE_CBC,''); if( $this->iv == '' ) { $iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND); } else { $iv = $this->iv; } $ks = mcrypt_enc_get_key_size($td); @mcrypt_generic_init($td, $key, $iv); $decrypted = mdecrypt_generic($td, $encrypted); mcrypt_generic_deinit($td); mcrypt_module_close($td); $y=$this->pkcs5_unpad($decrypted); return $y; } function pkcs5_pad ($text, $blocksize) { $pad = $blocksize - (strlen($text) % $blocksize); return $text . str_repeat(chr($pad), $pad); } function pkcs5_unpad($text){ $pad = ord($text{strlen($text)-1}); if ($pad > strlen($text)) { return false; } if (strspn($text, chr($pad), strlen($text) - $pad) != $pad){ return false; } return substr($text, 0, -1 * $pad); } function PaddingPKCS7($data) { $block_size = mcrypt_get_block_size(MCRYPT_3DES, MCRYPT_MODE_CBC); $padding_char = $block_size - (strlen($data) % $block_size); $data .= str_repeat(chr($padding_char),$padding_char); return $data; } } $des = new DES3(); echo $ret = $des->encrypt("来自http://gaodaima.com的博客") . "\n"; echo $des->decrypt($ret) . "\n"; 

 import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.OutputStream; import java.io.UnsupportedEncodingException; import java.security.Key; import javax.crypto.Cipher; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.DESedeKeySpec; import javax.crypto.spec.IvParameterSpec; /** * 3DES加密工具类 */ public class DES3 { // 密钥 private final static String secretKey = "my.oschina.net/penngo?#@" ; // 向量 private final static String iv = "01234567" ; // 加解密统一使用的编码方式 private final static String encoding = "utf-8" ; /** * 3DES加密 * * @param plainText 普通文本 * @return * @throws Exception */ public static String encode(String plainText) throws Exception { Key deskey = null ; DESedeKeySpec spec = new DESedeKeySpec(secretKey.getBytes()); SecretKeyFactory keyfactory = SecretKeyFactory.getInstance( "desede" ); deskey = keyfactory.generateSecret(spec); Cipher cipher = Cipher.getInstance( "desede/CBC/PKCS5Padding" ); IvParameterSpec ips = new IvParameterSpec(iv.getBytes()); cipher.init(Cipher.ENCRYPT_MODE, deskey, ips); byte [] encryptData = cipher.doFinal(plainText.getBytes(encoding)); return Base64.encode(encryptData); } /** * 3DES解密 * * @param encryptText 加密文本 * @return * @throws Exception */ public static String decode(String encryptText) throws Exception { Key deskey = null ; DESedeKeySpec spec = new DESedeKeySpec(secretKey.getBytes()); SecretKeyFactory keyfactory = SecretKeyFactory.getInstance( "desede" ); deskey = keyfactory.generateSecret(spec); Cipher cipher = Cipher.getInstance( "desede/CBC/PKCS5Padding" ); IvParameterSpec ips = new IvParameterSpec(iv.getBytes()); cipher.init(Cipher.DECRYPT_MODE, deskey, ips); byte [] decryptData = cipher.doFinal(Base64.decode(encryptText)); return new String(decryptData, encoding); } public static String padding(String str) { byte[] oldByteArray; try { oldByteArray = str.getBytes("UTF8"); int numberToPad = 8 - oldByteArray.length % 8; byte[] newByteArray = new byte[oldByteArray.length + numberToPad]; System.arraycopy(oldByteArray, 0, newByteArray, 0, oldByteArray.length); for (int i = oldByteArray.length; i <newByteArray.length; ++i) { newByteArray[i] = 0; } return new String(newByteArray, "UTF8"); } catch (UnsupportedEncodingException e) { System.out.println("Crypter.padding UnsupportedEncodingException"); } return null; } /** * Base64编码工具类 * */ public static class Base64 { private static final char [] legalChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" .toCharArray(); public static String encode( byte [] data) { int start = 0 ; int len = data.length; StringBuffer buf = new StringBuffer(data.length * 3 / 2 ); int end = len - 3 ; int i = start; int n = 0 ; while (i <= end) { int d = (((( int ) data[i]) & 0x0ff ) << 16 ) | (((( int ) data[i + 1 ]) & 0x0ff ) <> 18 ) & 63 ]); buf.append(legalChars[(d >> 12 ) & 63 ]); buf.append(legalChars[(d >> 6 ) & 63 ]); buf.append(legalChars[d & 63 ]); i += 3 ; if (n++ >= 14 ) { n = 0 ; buf.append( " " ); } } if (i == start + len - 2 ) { int d = (((( int ) data[i]) & 0x0ff ) << 16 ) | (((( int ) data[i + 1 ]) & 255 ) <> 18 ) & 63 ]); buf.append(legalChars[(d >> 12 ) & 63 ]); buf.append(legalChars[(d >> 6 ) & 63 ]); buf.append( "=" ); } else if (i == start + len - 1 ) { int d = ((( int ) data[i]) & 0x0ff ) <> 18 ) & 63 ]); buf.append(legalChars[(d >> 12 ) & 63 ]); buf.append( "==" ); } return buf.toString(); } private static int decode( char c) { if (c >= 'A' && c = 'a' && c = '0' && c <= '9' ) return (( int ) c) - 48 + 26 + 26 ; else switch (c) { case '+' : return 62 ; case '/' : return 63 ; case '=' : return 0 ; default : throw new RuntimeException( "unexpected code: " + c); } } /** * Decodes the given Base64 encoded String to a new byte array. The byte array holding the decoded data is returned. */ public static byte [] decode(String s) { ByteArrayOutputStream bos = new ByteArrayOutputStream(); try { decode(s, bos); } catch (IOException e) { throw new RuntimeException(); } byte [] decodedBytes = bos.toByteArray(); try { bos.close(); bos = null ; } catch (IOException ex) { System.err.println( "Error while decoding BASE64: " + ex.toString()); } return decodedBytes; } private static void decode(String s, OutputStream os) throws IOException { int i = 0 ; int len = s.length(); while ( true ) { while (i <len && s.charat(i) <='' ) i++; if (i== len) break ; int tri=(decode(s.charAt(i)) <> 16 ) & 255 ); if (s.charAt(i + 2 ) == '=' ) break ; os.write((tri >> 8 ) & 255 ); if (s.charAt(i + 3 ) == '=' ) break ; os.write(tri & 255 ); i += 4 ; } } } public static void main(String[] args) throws Exception{ String plainText = "来自http://gaodaima.com的博客"; String encryptText = DES3.encode(plainText); System.out.println(encryptText); System.out.println(DES3.decode(encryptText)); } }

 // // DES3Util.h // #import  @interface DES3Util : NSObject { } // 加密方法 + (NSString*)encrypt:(NSString*)plainText; // 解密方法 + (NSString*)decrypt:(NSString*)encryptText; @end // // DES3Util.m // #import "DES3Util.h" #import  #import "GTMBase64.h" #define gkey      @"my.oschina.net/penngo?#@" #define gIv       @"01234567" @implementation DES3Util // 加密方法 + (NSString*)encrypt:(NSString*)plainText { NSData* data = [plainText dataUsingEncoding:NSUTF8StringEncoding]; size_t plainTextBufferSize = [data length]; const void *vplainText = (const void *)[data bytes]; CCCryptorStatus ccStatus; uint8_t *bufferPtr = NULL; size_t bufferPtrSize = 0; size_t movedBytes = 0; bufferPtrSize = (plainTextBufferSize + kCCBlockSize3DES) & ~(kCCBlockSize3DES - 1); bufferPtr = malloc( bufferPtrSize * sizeof(uint8_t)); memset((void *)bufferPtr, 0x0, bufferPtrSize); const void *vkey = (const void *) [gkey UTF8String]; const void *vinitVec = (const void *) [gIv UTF8String]; ccStatus = CCCrypt(kCCEncrypt, kCCAlgorithm3DES, kCCOptionPKCS7Padding, vkey, kCCKeySize3DES, vinitVec, vplainText, plainTextBufferSize, (void *)bufferPtr, bufferPtrSize, &movedBytes); NSData *myData = [NSData dataWithBytes:(const void *)bufferPtr length:(NSUInteger)movedBytes]; NSString *result = [GTMBase64 stringByEncodingData:myData]; return result; } // 解密方法 + (NSString*)decrypt:(NSString*)encryptText { NSData *encryptData = [GTMBase64 decodeData:[encryptText dataUsingEncoding:NSUTF8StringEncoding]]; size_t plainTextBufferSize = [encryptData length]; const void *vplainText = [encryptData bytes]; CCCryptorStatus ccStatus; uint8_t *bufferPtr = NULL; size_t bufferPtrSize = 0; size_t movedBytes = 0; bufferPtrSize = (plainTextBufferSize + kCCBlockSize3DES) & ~(kCCBlockSize3DES - 1); bufferPtr = malloc( bufferPtrSize * sizeof(uint8_t)); memset((void *)bufferPtr, 0x0, bufferPtrSize); const void *vkey = (const void *) [gkey UTF8String]; const void *vinitVec = (const void *) [gIv UTF8String]; ccStatus = CCCrypt(kCCDecrypt, kCCAlgorithm3DES, kCCOptionPKCS7Padding, vkey, kCCKeySize3DES, vinitVec, vplainText, plainTextBufferSize, (void *)bufferPtr, bufferPtrSize, &movedBytes); NSString *result = [[[NSString alloc] initWithData:[NSData dataWithBytes:(const void *)bufferPtr length:(NSUInteger)movedBytes] encoding:NSUTF8StringEncoding] autorelease]; return result; } @end // // GTMBase64.h // // Copyright 2006-2008 Google Inc. // // Licensed under the Apache License, Version 2.0 (the "License"); you may not // use this file except in compliance with the License. You may obtain a copy // of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the // License for the specific language governing permissions and limitations under // the License. // David Lee make changes: // Remove dependency on GTMDefines.h // add some string to string function #import  // GTMBase64 // /// Helper for handling Base64 and WebSafeBase64 encodings // /// The webSafe methods use different character set and also the results aren't /// always padded to a multiple of 4 characters. This is done so the resulting /// data can be used in urls and url query arguments without needing any /// encoding. You must use the webSafe* methods together, the data does not /// interop with the RFC methods. // @interface GTMBase64 : NSObject // // Standard Base64 (RFC) handling // // encodeData: // /// Base64 encodes contents of the NSData object. // /// Returns: ///  A new autoreleased NSData with the encoded payload. nil for any error. // +(NSData *)encodeData:(NSData *)data; // decodeData: // /// Base64 decodes contents of the NSData object. // /// Returns: ///  A new autoreleased NSData with the decoded payload. nil for any error. // +(NSData *)decodeData:(NSData *)data; // encodeBytes:length: // /// Base64 encodes the data pointed at by |bytes|. // /// Returns: ///  A new autoreleased NSData with the encoded payload. nil for any error. // +(NSData *)encodeBytes:(const void *)bytes length:(NSUInteger)length; // decodeBytes:length: // /// Base64 decodes the data pointed at by |bytes|. // /// Returns: ///  A new autoreleased NSData with the encoded payload. nil for any error. // +(NSData *)decodeBytes:(const void *)bytes length:(NSUInteger)length; // stringByEncodingData: // /// Base64 encodes contents of the NSData object. // /// Returns: ///  A new autoreleased NSString with the encoded payload. nil for any error. // +(NSString *)stringByEncodingData:(NSData *)data; // stringByEncodingBytes:length: // /// Base64 encodes the data pointed at by |bytes|. // /// Returns: ///  A new autoreleased NSString with the encoded payload. nil for any error. // +(NSString *)stringByEncodingBytes:(const void *)bytes length:(NSUInteger)length; // decodeString: // /// Base64 decodes contents of the NSString. // /// Returns: ///  A new autoreleased NSData with the decoded payload. nil for any error. // +(NSData *)decodeString:(NSString *)string; // // Modified Base64 encoding so the results can go onto urls. // // The changes are in the characters generated and also allows the result to // not be padded to a multiple of 4. // Must use the matching call to encode/decode, won't interop with the // RFC versions. // // webSafeEncodeData:padded: // /// WebSafe Base64 encodes contents of the NSData object. If |padded| is YES /// then padding characters are added so the result length is a multiple of 4. // /// Returns: ///  A new autoreleased NSData with the encoded payload. nil for any error. // +(NSData *)webSafeEncodeData:(NSData *)data padded:(BOOL)padded; // webSafeDecodeData: // /// WebSafe Base64 decodes contents of the NSData object. // /// Returns: ///  A new autoreleased NSData with the decoded payload. nil for any error. // +(NSData *)webSafeDecodeData:(NSData *)data; // webSafeEncodeBytes:length:padded: // /// WebSafe Base64 encodes the data pointed at by |bytes|. If |padded| is YES /// then padding characters are added so the result length is a multiple of 4. // /// Returns: ///  A new autoreleased NSData with the encoded payload. nil for any error. // +(NSData *)webSafeEncodeBytes:(const void *)bytes length:(NSUInteger)length padded:(BOOL)padded; // webSafeDecodeBytes:length: // /// WebSafe Base64 decodes the data pointed at by |bytes|. // /// Returns: ///  A new autoreleased NSData with the encoded payload. nil for any error. // +(NSData *)webSafeDecodeBytes:(const void *)bytes length:(NSUInteger)length; // stringByWebSafeEncodingData:padded: // /// WebSafe Base64 encodes contents of the NSData object. If |padded| is YES /// then padding characters are added so the result length is a multiple of 4. // /// Returns: ///  A new autoreleased NSString with the encoded payload. nil for any error. // +(NSString *)stringByWebSafeEncodingData:(NSData *)data padded:(BOOL)padded; // stringByWebSafeEncodingBytes:length:padded: // /// WebSafe Base64 encodes the data pointed at by |bytes|. If |padded| is YES /// then padding characters are added so the result length is a multiple of 4. // /// Returns: ///  A new autoreleased NSString with the encoded payload. nil for any error. // +(NSString *)stringByWebSafeEncodingBytes:(const void *)bytes length:(NSUInteger)length padded:(BOOL)padded; // webSafeDecodeString: // /// WebSafe Base64 decodes contents of the NSString. // /// Returns: ///  A new autoreleased NSData with the decoded payload. nil for any error. // +(NSData *)webSafeDecodeString:(NSString *)string; // David Lee new added function /// Returns: // A new autoreleased NSString with Base64 encoded NSString +(NSString *)stringByBase64String:(NSString *)base64String; // David Lee new added function /// Returns: // A new autoreleased Base64 encoded NSString with NSString +(NSString *)base64StringBystring:(NSString *)string; @end // // GTMBase64.m // // Copyright 2006-2008 Google Inc. // // Licensed under the Apache License, Version 2.0 (the "License"); you may not // use this file except in compliance with the License. You may obtain a copy // of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, <strong style="color:transparent">来源gaodai#ma#com搞@@代~&码网</strong>software // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the // License for the specific language governing permissions and limitations under // the License. // David Lee make changes: // Remove dependency on GTMDefines.h // add some string to string function #import "GTMBase64.h" static const char *kBase64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; static const char *kWebSafeBase64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"; static const char kBase64PaddingChar = '='; static const char kBase64InvalidChar = 99; static const char kBase64DecodeChars[] = { // This array was generated by the following code: // #include  // #include  // #include  // main() // { //  static const char Base64[] = //   "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; //  char *pos; //  int idx, i, j; //  printf("  "); //  for (i = 0; i <255; i += 8) { //   for (j = i; j <i> // #include  // #include  // main() // { //  static const char Base64[] = //   "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"; //  char *pos; //  int idx, i, j; //  printf("  "); //  for (i = 0; i <255; i += 8) { //   for (j = i; j <i> 2) { // space? NSAssert(destLen >= 4, @"our calc for encoded length was wrong"); curDest[0] = charset[curSrc[0] >> 2]; curDest[1] = charset[((curSrc[0] & 0x03) <> 4)]; curDest[2] = charset[((curSrc[1] & 0x0f) <> 6)]; curDest[3] = charset[curSrc[2] & 0x3f]; curDest += 4; curSrc += 3; srcLen -= 3; destLen -= 4; } // now deal with the tail (= 2, @"our calc for encoded length was wrong"); curDest[0] = charset[curSrc[0] >> 2]; curDest[1] = charset[(curSrc[0] & 0x03) <= 2, @"our calc for encoded length was wrong"); curDest[0] = kBase64PaddingChar; curDest[1] = kBase64PaddingChar; curDest += 2; } break; case 2: // Two bytes left: this encodes to three characters, and (optionally) // one pad character to round out the four-character cypherblock. NSAssert(destLen >= 3, @"our calc for encoded length was wrong"); curDest[0] = charset[curSrc[0] >> 2]; curDest[1] = charset[((curSrc[0] & 0x03) <> 4)]; curDest[2] = charset[(curSrc[1] & 0x0f) <= 1, @"our calc for encoded length was wrong"); curDest[0] = kBase64PaddingChar; curDest += 1; } break; } // return the length return (curDest - destBytes); } // // baseDecode:srcLen:destBytes:destLen:charset:requirePadding: // // Decodes the buffer into the larger. returns the length of the decoded // data, or zero for an error. // |charset| is the character decoding buffer to use // // Returns: //  the length of the encoded data. zero if any error. // +(NSUInteger)baseDecode:(const char *)srcBytes srcLen:(NSUInteger)srcLen destBytes:(char *)destBytes destLen:(NSUInteger)destLen charset:(const char *)charset requirePadding:(BOOL)requirePadding { if (!srcLen || !destLen || !srcBytes || !destBytes) { return 0; } int decode; NSUInteger destIndex = 0; int state = 0; char ch = 0; while (srcLen-- && (ch = *srcBytes++) != 0) { if (IsSpace(ch)) // Skip whitespace continue; if (ch == kBase64PaddingChar) break; decode = charset[(unsigned int)ch]; if (decode == kBase64InvalidChar) return 0; // Four cyphertext characters decode to three bytes. // Therefore we can be in one of four states. switch (state) { case 0: // We're at the beginning of a four-character cyphertext block. // This sets the high six bits of the first byte of the // plaintext block. NSAssert(destIndex <destLen, @"our calc for decoded length was wrong"); destBytes[destIndex] = decode << 2; state = 1; break; case 1: // We're one character into a four-character cyphertext block. // This sets the low two bits of the first plaintext byte, // and the high four bits of the second plaintext byte. NSAssert((destIndex+1) > 4; destBytes[destIndex+1] = (decode & 0x0f) << 4; destIndex++; state = 2; break; case 2: // We're two characters into a four-character cyphertext block. // This sets the low four bits of the second plaintext // byte, and the high two bits of the third plaintext byte. // However, if this is the end of data, and those two // bits are zero, it could be that those two bits are // leftovers from the encoding of data that had a length // of two mod three. NSAssert((destIndex+1) > 2; destBytes[destIndex+1] = (decode & 0x03) << 6; destIndex++; state = 3; break; case 3: // We're at the last character of a four-character cyphertext block. // This sets the low six bits of the third plaintext byte. NSAssert(destIndex  0)) { if (!IsSpace(ch)) break; } if (ch != kBase64PaddingChar) { return 0; } } // state = 1 or 2, check if all remain padding is space while ((ch = *srcBytes++) && (srcLen-- > 0)) { if (!IsSpace(ch)) { return 0; } } } } else { // We ended by seeing the end of the string. if (requirePadding) { // If we require padding, then anything but state 0 is an error. if (state != 0) { return 0; } } else { // Make sure we have no partial bytes lying around. Note that we do not // require trailing '=', so states 2 and 3 are okay too. if (state == 1) { return 0; } } } // If then next piece of output was valid and got written to it means we got a // very carefully crafted input that appeared valid but contains some trailing // bits past the real length, so just toss the thing. if ((destIndex <destLen) && (destBytes[destIndex] != 0)) { return 0; } return destIndex; }