是否有支持iOS（Swift）和C＃应用程序的跨平台AES 256加密和解密。除了 https://github.com/Pakhee/Cross-platform-AES-encryption
我正在尝试加密和解密所有数据。
答案 0 :(得分：1)
我在C＃，IOS和Android中使用相同的类（https://github.com/Pakhee/Cross-platform-AES-encryption）进行AES加密/解密。它可以与C＃和android一起使用，但不能与IOS一起工作。最后发现以下解决方案工作正常IOS。
#import <CommonCrypto/CommonCryptor.h>
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSString *sData = @"Meet me at the secret location at 8pm";
NSString *sIv = @"4QesEr03HwE5H1C+ICw7SA==";
NSString *sKey = @"ovA6siPkyM5Lb9oNcnxLz676K6JK6FrJKk4efEUWBzg=";
NSData *dData = [sData dataUsingEncoding:NSUTF8StringEncoding];
NSData *dEncrypt = [self doCipher:dData key:sKey iv:sIv context:kCCEncrypt];
NSData *base64 = [dEncrypt base64EncodedDataWithOptions:0];
NSString *sBase64 = [[NSString alloc] initWithData:base64 encoding:NSUTF8StringEncoding];
NSLog(@"Base64 String: %@",sBase64);
NSData *dDecrypt= [self decrypt:dEncrypt key:sKey iv:sIv];
NSString *sDecrypt = [[NSString alloc] initWithData:dDecrypt encoding:NSUTF8StringEncoding];
NSLog(@"Decrypted Data: %@",sDecrypt);
}
- (NSData *)doCipher:(NSData *)plainText
key:(NSString *)key
iv:(NSString *)iv
context:(CCOperation)encryptOrDecrypt
{
NSUInteger dataLength = [plainText length];
size_t buffSize = dataLength + kCCBlockSizeAES128;
void *buff = malloc(buffSize);
size_t numBytesEncrypted = 0;
NSData *dIv = [iv dataUsingEncoding:NSUTF8StringEncoding];
NSData *dKey = [key dataUsingEncoding:NSUTF8StringEncoding];
CCCryptorStatus status = CCCrypt(encryptOrDecrypt,
kCCAlgorithmAES128,
kCCOptionPKCS7Padding,
dKey.bytes, kCCKeySizeAES256,
dIv.bytes,
[plainText bytes], [plainText length],
buff, buffSize,
&numBytesEncrypted);
if (status == kCCSuccess) {
return [NSData dataWithBytesNoCopy:buff length:numBytesEncrypted];
}
free(buff);
return nil;
}
有关详细信息，请查看此主题。 Decrypt a base64 string using C# generated by iOs CCCrypt function using AES
答案 1 :(得分：0)
在其中一个项目中，需要跨平台（C＃，Android，IOS）AES加密/解密。 我尝试过https://github.com/Pakhee/Cross-platform-AES-encryption，但它会产生IOS问题。 所以我已经实现了AES，它适用于C＃，IOS和Android。
<强> C＃
public class AESCrypto
{
/// <summary>
/// Encrpyts the sourceString, returns this result as an Aes encrpyted, BASE64 encoded string
/// </summary>
/// <param name="plainSourceStringToEncrypt">a plain, Framework string (ASCII, null terminated)</param>
/// <param name="passPhrase">The pass phrase.</param>
/// <returns>
/// returns an Aes encrypted, BASE64 encoded string
/// </returns>
public static string EncryptString(string plainSourceStringToEncrypt, string passPhrase)
{
//Set up the encryption objects
using (AesCryptoServiceProvider acsp = GetProvider(Encoding.Default.GetBytes(passPhrase)))
{
byte[] sourceBytes = Encoding.ASCII.GetBytes(plainSourceStringToEncrypt);
ICryptoTransform ictE = acsp.CreateEncryptor();
//Set up stream to contain the encryption
MemoryStream msS = new MemoryStream();
//Perform the encrpytion, storing output into the stream
CryptoStream csS = new CryptoStream(msS, ictE, CryptoStreamMode.Write);
csS.Write(sourceBytes, 0, sourceBytes.Length);
csS.FlushFinalBlock();
//sourceBytes are now encrypted as an array of secure bytes
byte[] encryptedBytes = msS.ToArray(); //.ToArray() is important, don't mess with the buffer
//return the encrypted bytes as a BASE64 encoded string
return Convert.ToBase64String(encryptedBytes);
}
}
/// <summary>
/// Decrypts a BASE64 encoded string of encrypted data, returns a plain string
/// </summary>
/// <param name="base64StringToDecrypt">an Aes encrypted AND base64 encoded string</param>
/// <param name="passphrase">The passphrase.</param>
/// <returns>returns a plain string</returns>
public static string DecryptString(string base64StringToDecrypt, string passphrase)
{
//Set up the encryption objects
using (AesCryptoServiceProvider acsp = GetProvider(Encoding.Default.GetBytes(passphrase)))
{
byte[] RawBytes = Convert.FromBase64String(base64StringToDecrypt);
ICryptoTransform ictD = acsp.CreateDecryptor();
//RawBytes now contains original byte array, still in Encrypted state
//Decrypt into stream
MemoryStream msD = new MemoryStream(RawBytes, 0, RawBytes.Length);
CryptoStream csD = new CryptoStream(msD, ictD, CryptoStreamMode.Read);
//csD now contains original byte array, fully decrypted
//return the content of msD as a regular string
return (new StreamReader(csD)).ReadToEnd();
}
}
private static AesCryptoServiceProvider GetProvider(byte[] key)
{
AesCryptoServiceProvider result = new AesCryptoServiceProvider();
result.BlockSize = 128;
result.KeySize = 128;
result.Mode = CipherMode.CBC;
result.Padding = PaddingMode.PKCS7;
result.GenerateIV();
result.IV = new byte[] {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
byte[] RealKey = GetKey(key, result);
result.Key = RealKey;
// result.IV = RealKey;
return result;
}
private static byte[] GetKey(byte[] suggestedKey, SymmetricAlgorithm p)
{
byte[] kRaw = suggestedKey;
List<byte> kList = new List<byte>();
for (int i = 0; i < p.LegalKeySizes[0].MinSize; i += 8)
{
kList.Add(kRaw[(i / 8) % kRaw.Length]);
}
byte[] k = kList.ToArray();
return k;
}
}
**JAVA -Andorid**
public class AESHelper {
/*This method use to encript the sting */
public static String encrypt(String inputString) throws Exception {
byte[] result = encrypt(inputString.getBytes());
String result1 = Base64.encodeToString(result,
Base64.NO_WRAP);//Instead of Default
return result1;
}
public static String decrypt(String encrypted) throws Exception {
byte[] data = Base64.decode(encrypted, Base64.NO_WRAP);
byte[] result = decrypt(data);
String original = new String(result, "UTF-8");
return new String(original);
}
/*This method return encrypted text with byte code*/
private static byte[] encrypt( byte[] message) throws Exception {
byte[] KEY = ConstantData.key.getBytes();//Key for encryption
SecretKeySpec skeySpec = new SecretKeySpec(KEY, "AES");
byte[] ivx = new byte[] {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};//make same as web team
IvParameterSpec ivSpec = new IvParameterSpec(ivx);
Cipher ecipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
ecipher.init(Cipher.ENCRYPT_MODE, skeySpec, ivSpec);
byte[] encrypted = ecipher.doFinal(message);
return encrypted;
}
private static byte[] decrypt(byte[] encrypted) throws Exception {
byte[] KEY = ConstantData.key.getBytes();//Key for decrypt
SecretKeySpec skeySpec = new SecretKeySpec(KEY, "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
byte[] ivx = new byte[] {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};//make same as web team
IvParameterSpec ivSpec = new IvParameterSpec(ivx);
cipher.init(Cipher.DECRYPT_MODE, skeySpec,ivSpec);
byte[] decrypted = cipher.doFinal(encrypted);
return decrypted;
}
对于 IOS ，文件很少，因此无法在此处输入代码。您可以从以下网址找到源代码。 https://drive.google.com/file/d/0B05dZSkNGcb-RXkxcjBNd21TNXc/view?usp=sharing