iOS和Java都是常見的開發(fā)平臺，它們之間通過AES加密算法可以進行安全的數(shù)據(jù)傳輸。

AES算法是一種對稱加密算法，含有加密密鑰和解密密鑰，因此需要保護密鑰的安全性。對于iOS平臺，可以使用CommonCrypto庫來實現(xiàn)AES加密算法。

以下是iOS中使用AES加密的示例代碼：

//加密
+ (NSData *)AES128Encrypt:(NSData *)data key:(NSString *)key
{
char keyPtr[kCCKeySizeAES128 + 1];
bzero(keyPtr, sizeof(keyPtr));
[key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
NSUInteger dataLength = [data length];
size_t bufferSize = dataLength + kCCBlockSizeAES128;
void *buffer = malloc(bufferSize);
size_t numBytesEncrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt,
kCCAlgorithmAES128,
kCCOptionPKCS7Padding | kCCOptionECBMode,
keyPtr,
kCCBlockSizeAES128,
NULL,
[data bytes],
dataLength,
buffer,
bufferSize,
&numBytesEncrypted);
if (cryptStatus == kCCSuccess) {
NSData *result = [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];
return result;
}
free(buffer);
return nil;
}
//解密
+ (NSData *)AES128Decrypt:(NSData *)data key:(NSString *)key
{
char keyPtr[kCCKeySizeAES128 + 1];
bzero(keyPtr, sizeof(keyPtr));
[key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
NSUInteger dataLength = [data length];
size_t bufferSize = dataLength + kCCBlockSizeAES128;
void *buffer = malloc(bufferSize);
size_t numBytesDecrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt,
kCCAlgorithmAES128,
kCCOptionPKCS7Padding | kCCOptionECBMode,
keyPtr,
kCCBlockSizeAES128,
NULL,
[data bytes],
dataLength,
buffer,
bufferSize,
&numBytesDecrypted);
if (cryptStatus == kCCSuccess) {
NSData *result = [NSData dataWithBytesNoCopy:buffer length:numBytesDecrypted];
return result;
}
free(buffer);
return nil;
}

對于Java平臺，可以使用javax.crypto庫中的Cipher類來實現(xiàn)AES加密算法：

//加密
public static byte[] encrypt(byte[] data, byte[] key) throws Exception {
SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, keySpec);
return cipher.doFinal(data);
}
//解密
public static byte[] decrypt(byte[] data, byte[] key) throws Exception {
SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, keySpec);
return cipher.doFinal(data);
}

以上是兩種平臺下使用AES加密算法的示例代碼，可以為數(shù)據(jù)傳輸?shù)陌踩蕴峁┍Ｕ稀?/p>