3DES导致Java产生3DES iOS版本的不同结果

我真的很….真的需要帮助………..

-更新-

我需要帮助，因为与iOS 3DESfunction相比，我的javafunction给了我一个不同的结果。 我发布了来自ios和java的代码; 当指定明文为“tutor.1”且MD5键为“spO13 + QLZCRAe93pIXMXLg ==”（MD5，清楚地，两者都相同）时的结果。

JAVA 3DES （简单而简单）

public static String encrypt(String plaintext, String enctoken){ if(enctoken == null) enctoken = "sfdjf48mdfdf3054"; String encrypted = null; byte[] plaintextByte = EncodingUtils.getBytes(plaintext,"UTF-8"); byte[] hash = Connessione.md5(enctoken); Log.i("ENCRYPT", "MD5: "+Base64.encodeToString(hash, 0)); try { Cipher cipher = Cipher.getInstance("DESEDE/ECB/PKCS5Padding"); SecretKeySpec myKey = new SecretKeySpec(hash,"DESede"); cipher.init(Cipher.ENCRYPT_MODE, myKey); try { byte[] encryptedPlainText = cipher.doFinal(plaintextByte); encrypted = Base64.encodeToString(encryptedPlainText, 0); Log.i("ENCRYPT", "Pwd encrypted: "+encrypted); return encrypted; } catch (IllegalBlockSizeException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (BadPaddingException e) { // TODO Auto-generated catch block e.printStackTrace(); } } catch (NoSuchAlgorithmException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (NoSuchPaddingException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (InvalidKeyException e) { // TODO Auto-generated catch block e.printStackTrace(); } return ""; } 

结果： R4mXAaHcFxM =

IOS 3DES – 再次更新

 // key value in parameters is MD5 value! It is the same for both version + (NSString *) encrypt:(NSString *) dataToEncrypt withKey:(NSString*) key{ NSData *data = [dataToEncrypt dataUsingEncoding:NSUTF8StringEncoding]; NSData *mData = [key dataUsingEncoding:NSUTF8StringEncoding]; CCCryptorStatus ccStatus = kCCSuccess; // Begin to calculate bytesNeeded.... size_t bytesNeeded = 0; ccStatus = CCCrypt(kCCEncrypt, kCCAlgorithm3DES, kCCOptionECBMode | kCCOptionPKCS7Padding, [mData bytes], [mData length], nil, [data bytes], [data length], NULL, 0, &bytesNeeded); if(kCCBufferTooSmall != ccStatus){ NSLog(@"Here it must return BUFFER TOO SMALL !!"); return nil; } // .....End // Now i do the real Crypting char* cypherBytes = malloc(bytesNeeded); size_t bufferLength = bytesNeeded; if(NULL == cypherBytes) NSLog(@"cypherBytes NULL"); ccStatus = CCCrypt(kCCEncrypt, kCCAlgorithm3DES, kCCOptionECBMode | kCCOptionPKCS7Padding, [mData bytes], [mData length], nil, [data bytes], [data length], cypherBytes, bufferLength, &bytesNeeded); if(kCCSuccess != ccStatus){ NSLog(@"kCCSuccess NO!"); return nil; } return [Base64 encode:[NSData dataWithBytes:cypherBytes length:bufferLength]]; 

}

结果： YBAva5J2khY =

我需要iOS版本返回与Java版本相同的结果。

我在这里find了Base64类： http : //www.imthi.com/blog/programming/iphone-sdk-base64-encode-decode.php

我做错了什么？

Thx为您的帮助和时间

Answer 1

好吧，我开始使用DESencryption更容易。 另外，我正在跳过Base64和密钥哈希 – 一旦确定encryption工作正常，所有这些都可以轻松添加，并且可以一次添加一个。

这是iOS代码：

 #import <UIKit/UIKit.h> #import <CommonCrypto/CommonCrypto.h> #import <CommonCrypto/CommonCryptor.h> int main(int argc, char *argv[]) { @autoreleasepool { BOOL encryptOrDecrypt = kCCEncrypt; NSString *plainText = @"abcdefghijklmnop"; NSString *key = @"01234567"; const void *vplainText; size_t plainTextBufferSize; NSData *tempData = [plainText dataUsingEncoding:NSASCIIStringEncoding]; plainTextBufferSize = [tempData length]; vplainText = [tempData bytes]; CCCryptorStatus ccStatus; uint8_t *bufferPtr = NULL; size_t bufferPtrSize = 0; size_t movedBytes = 0; bufferPtrSize = [plainText length]; if (bufferPtrSize % 8) { bufferPtrSize += 8 - (bufferPtrSize % 8); } // bufferPtrSize = (plainTextBufferSize + kCCBlockSize3DES) & ~(kCCBlockSize3DES - 1); bufferPtr = malloc( bufferPtrSize * sizeof(uint8_t) + 1); // To null-terminate a string if req'd memset((void *)bufferPtr, 0x0, bufferPtrSize+1); NSData *_keyData = [key dataUsingEncoding:NSASCIIStringEncoding]; NSLog(@"key byte is %s", [_keyData bytes]); // Initialization vector; dummy in this case 0's. // uint8_t iv[kCCBlockSize3DES]; // memset((void *) iv, 0x0, (size_t) sizeof(iv)); ccStatus = CCCrypt(encryptOrDecrypt, kCCAlgorithmDES, kCCOptionECBMode, //kCCOptionPKCS7Padding | kCCOptionECBMode, (const void *)[_keyData bytes], //key kCCKeySizeDES, nil, //iv, vplainText, //plainText, plainTextBufferSize, (void *)bufferPtr, bufferPtrSize, &movedBytes); //if (ccStatus == kCCSuccess) NSLog(@"SUCCESS"); /*else*/ switch (ccStatus) { case kCCParamError: NSLog(@"PARAM ERROR"); break; case kCCBufferTooSmall: NSLog(@"BUFFER TOO SMALL"); break; case kCCMemoryFailure: NSLog(@"MEMORY FAILURE"); break; case kCCAlignmentError: NSLog(@"ALIGNMENT ERROR"); break; case kCCDecodeError: NSLog(@"DECODE ERROR"); break; case kCCUnimplemented: NSLog(@"UNIMPLEMENTED"); break; default: NSLog(@"encrypt seems to have worked"); break; } for (size_t i=0; i<movedBytes; i++) { printf("%02x ", (int) bufferPtr[i]); } printf("\n"); return UIApplicationMain(argc, argv, nil, NSStringFromClass([FAAppDelegate class])); } } 

这里是Java代码：

 import java.io.UnsupportedEncodingException; import java.security.InvalidKeyException; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.Arrays; import javax.crypto.BadPaddingException; import javax.crypto.Cipher; import javax.crypto.IllegalBlockSizeException; import javax.crypto.KeyGenerator; import javax.crypto.NoSuchPaddingException; import javax.crypto.SecretKey; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; import javax.xml.bind.DatatypeConverter; public class DesRun { /** * @param args */ public static void main(String[] args) { String theKey = "01234567"; String message = "abcdefghijklmnop"; Cipher ecipher, dcipher; try { // generate secret key using DES algorithm SecretKeySpec key = new SecretKeySpec(theKey.getBytes("UTF-8"), "DES"); ecipher = Cipher.getInstance("DES"); dcipher = Cipher.getInstance("DES"); // initialize the ciphers with the given key ecipher.init(Cipher.ENCRYPT_MODE, key); dcipher.init(Cipher.DECRYPT_MODE, key); byte[] encrypted = ecipher.doFinal(message.getBytes("UTF-8")); System.out.println(DatatypeConverter.printHexBinary(encrypted)); String decrypted = new String(dcipher.doFinal(encrypted), "UTF-8"); System.out.println("Decrypted: " + decrypted); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } } 

都打印出encryption数据的hex字节，他们同意。

现在应该是（相对）容易移动到3DES。

只有在3DES同意iOS和Java之后，才会开始在密钥上添加散列。

Answer 2

find错误。 keydata编码是不同的