for IOS?

Thank you for useful example. I have been searching for exactly this solution (PHP on server-side + java for mobile side). I tried to include your nice code in my project and found a tiny mistake.

Please change this code
AesCipher encrypted = AesCipher.encrypt(secretKey, text);
AesCipher decrypted = AesCipher.decrypt(secretKey, encrypted);
to
AesCipher encrypted = AesCipher.encrypt(secretKey, text);
AesCipher decrypted = AesCipher.decrypt(secretKey, encrypted.getData());
in USAGE description for Java code.

Thank you bro!

Hi, I tried to decrypt php, when encrypted in java. but its not working in php code

For iOS Code:
===========

 import Foundation
 import CommonCrypto

 extension String {
    func aesEncrypt(key:String, iv:String, options:Int = kCCOptionPKCS7Padding) -> String? {
        if let keyData = key.data(using: String.Encoding.utf8),
            let data = self.data(using: String.Encoding.utf8),
            let cryptData    = NSMutableData(length: Int((data.count)) + kCCBlockSizeAES128) {
            let keyLength              = size_t(kCCKeySizeAES128)
            let operation: CCOperation = UInt32(kCCEncrypt)
            let algoritm:  CCAlgorithm = UInt32(kCCAlgorithmAES128)
            let options:   CCOptions   = UInt32(options)
            
            var numBytesEncrypted :size_t = 0
            
            let cryptStatus = CCCrypt(operation,
                                      algoritm,
                                      options,
                                      (keyData as NSData).bytes, keyLength,
                                      iv,
                                      (data as NSData).bytes, data.count,
                                      cryptData.mutableBytes, cryptData.length,
                                      &numBytesEncrypted)
            
            if cryptStatus == kCCSuccess {
                cryptData.length = Int(numBytesEncrypted)
                let base64cryptString = cryptData.base64EncodedString(options: .lineLength64Characters)
                return base64cryptString
            }
            else {
                return nil
            }
        }
        return nil
    }
    
    func aesDecrypt(key:String, iv:String, options:Int = kCCOptionPKCS7Padding) -> String? {
        if let keyData = key.data(using: String.Encoding.utf8),
            let data = NSData(base64Encoded: self, options: .ignoreUnknownCharacters),
            let cryptData    = NSMutableData(length: Int((data.length)) + kCCBlockSizeAES128) {
            
            let keyLength              = size_t(kCCKeySizeAES128)
            let operation: CCOperation = UInt32(kCCDecrypt)
            let algoritm:  CCAlgorithm = UInt32(kCCAlgorithmAES128)
            let options:   CCOptions   = UInt32(options)
            
            var numBytesEncrypted :size_t = 0
            
            let cryptStatus = CCCrypt(operation,
                                      algoritm,
                                      options,
                                      (keyData as NSData).bytes, keyLength,
                                      iv,
                                      data.bytes, data.length,
                                      cryptData.mutableBytes, cryptData.length,
                                      &numBytesEncrypted)
            
            if cryptStatus == kCCSuccess {
                cryptData.length = Int(numBytesEncrypted)
                let unencryptedMessage = String(data: cryptData as Data, encoding:String.Encoding.utf8)
                return unencryptedMessage
            }
            else {
                return nil
            }
        }
        return nil
    }
}

let messgeBody = "Test message"
let AES_KEY = "Your AES KEY"
let AES_IV = "Your AES IV"

let encryptedMsg = messgeBody.aesEncrypt(key: AES_KEY, iv: AES_IV)
print(encryptedMsg!)

let decryptMsg = encryptedMsg?.aesDecrypt(key: AES_KEY, iv: AES_IV)
print(decryptMsg!)

Generate Dynamic AES_IV in iOS:

//
// AESEncryption.swift
// Created by Brahmam Mannam on 6/24/19.
//

import Foundation
import CommonCrypto

protocol Cryptable {
    func encrypt(_ string: String) throws -> Data
    func decrypt(_ data: Data) throws -> String
}

struct AES {
    private let key: Data
    private let ivSize: Int         = kCCBlockSizeAES128
    private let options: CCOptions  = CCOptions(kCCOptionPKCS7Padding)
    
    init(keyString: String) throws {
        //        guard keyString.count == kCCKeySizeAES256 else {
        //            throw Error.invalidKeySize
        //        }
        self.key = Data(keyString.utf8)
    }
}

extension AES {
    enum Error: Swift.Error {
        case invalidKeySize
        case generateRandomIVFailed
        case encryptionFailed
        case decryptionFailed
        case dataToStringFailed
    }
}

private extension AES {
    func generateRandomIV(for data: inout Data) throws {
        try data.withUnsafeMutableBytes { dataBytes in
            guard let dataBytesBaseAddress = dataBytes.baseAddress else {
                throw Error.generateRandomIVFailed
            }
            
            let status: Int32 = SecRandomCopyBytes(
                kSecRandomDefault,
                kCCBlockSizeAES128,
                dataBytesBaseAddress
            )
            
            guard status == 0 else {
                throw Error.generateRandomIVFailed
            }
        }
    }
}

extension AES: Cryptable {
    func encrypt(_ string: String) throws -> Data {
        let dataToEncrypt = Data(string.utf8)
        
        let bufferSize: Int = ivSize + dataToEncrypt.count + kCCBlockSizeAES128
        var buffer = Data(count: bufferSize)
        try generateRandomIV(for: &buffer)
        
        var numberBytesEncrypted: Int = 0
        
        do {
            try key.withUnsafeBytes { keyBytes in
                try dataToEncrypt.withUnsafeBytes { dataToEncryptBytes in
                    try buffer.withUnsafeMutableBytes { bufferBytes in
                        
                        guard let keyBytesBaseAddress = keyBytes.baseAddress,
                            let dataToEncryptBytesBaseAddress = dataToEncryptBytes.baseAddress,
                            let bufferBytesBaseAddress = bufferBytes.baseAddress else {
                                throw Error.encryptionFailed
                        }
                        
                        let cryptStatus: CCCryptorStatus = CCCrypt( // Stateless, one-shot encrypt operation
                            CCOperation(kCCEncrypt),                // op: CCOperation
                            CCAlgorithm(kCCAlgorithmAES),           // alg: CCAlgorithm
                            options,                                // options: CCOptions
                            keyBytesBaseAddress,                    // key: the "password"
                            key.count,                              // keyLength: the "password" size
                            bufferBytesBaseAddress,                 // iv: Initialization Vector
                            dataToEncryptBytesBaseAddress,          // dataIn: Data to encrypt bytes
                            dataToEncryptBytes.count,               // dataInLength: Data to encrypt size
                            bufferBytesBaseAddress + ivSize,        // dataOut: encrypted Data buffer
                            bufferSize,                             // dataOutAvailable: encrypted Data buffer size
                            &numberBytesEncrypted                   // dataOutMoved: the number of bytes written
                        )
                        
                        guard cryptStatus == CCCryptorStatus(kCCSuccess) else {
                            throw Error.encryptionFailed
                        }
                    }
                }
            }
            
        } catch {
            throw Error.encryptionFailed
        }
        
        let encryptedData: Data = buffer[..<(numberBytesEncrypted + ivSize)]
        return encryptedData
    }
    
    func decrypt(_ data: Data) throws -> String {
        let bufferSize: Int = data.count - ivSize
        var buffer = Data(count: bufferSize)
        
        var numberBytesDecrypted: Int = 0
        
        do {
            try key.withUnsafeBytes { keyBytes in
                try data.withUnsafeBytes { dataToDecryptBytes in
                    try buffer.withUnsafeMutableBytes { bufferBytes in
                        
                        guard let keyBytesBaseAddress = keyBytes.baseAddress,
                            let dataToDecryptBytesBaseAddress = dataToDecryptBytes.baseAddress,
                            let bufferBytesBaseAddress = bufferBytes.baseAddress else {
                                throw Error.encryptionFailed
                        }
                        
                        let cryptStatus: CCCryptorStatus = CCCrypt( // Stateless, one-shot encrypt operation
                            CCOperation(kCCDecrypt),                // op: CCOperation
                            CCAlgorithm(kCCAlgorithmAES128),        // alg: CCAlgorithm
                            options,                                // options: CCOptions
                            keyBytesBaseAddress,                    // key: the "password"
                            key.count,                              // keyLength: the "password" size
                            dataToDecryptBytesBaseAddress,          // iv: Initialization Vector
                            dataToDecryptBytesBaseAddress + ivSize, // dataIn: Data to decrypt bytes
                            bufferSize,                             // dataInLength: Data to decrypt size
                            bufferBytesBaseAddress,                 // dataOut: decrypted Data buffer
                            bufferSize,                             // dataOutAvailable: decrypted Data buffer size
                            &numberBytesDecrypted                   // dataOutMoved: the number of bytes written
                        )
                        
                        guard cryptStatus == CCCryptorStatus(kCCSuccess) else {
                            throw Error.decryptionFailed
                        }
                    }
                }
            }
        } catch {
            throw Error.encryptionFailed
        }
        
        let decryptedData: Data = buffer[..<numberBytesDecrypted]
        
        guard let decryptedString = String(data: decryptedData, encoding: .utf8) else {
            throw Error.dataToStringFailed
        }
        
        return decryptedString
    }
    
}

**How To Use:

To Encrypt Your String:
**************************
let messgeBody = "Your Message Here"
do {
       let aes = try AES(keyString: aes128_key) //aes128_key = "Your AES_KEY"
       let encryptedData: Data = try aes.encrypt(messgeBody)
       let encryptedMsgStr : String = encryptedData.base64EncodedString()
      print(encryptedMsgStr)
    } catch {
        print("Something went wrong: \(error)")
    }

To Decrypt:
*************
var messageData = NSData()
 messageData = NSData(base64Encoded: "encrypted message string here..", options: [])!
  do {
           let aes = try AES(keyString: aes128_key) //aes128_key = "Your AES_KEY"
           let decryptedMessageStr: String = try aes.decrypt(messageData as Data)
          print(decryptedMessageStr)
       } catch {
            print("Something went wrong: \(error)")
   }

It still doesnt work after i changed CIPHER = 'AES-128-CBC' to CIPHER = 'AES-256-CBC' and IVlength t0 32.Can you please suggest a solution?

my php decrypt code ：

    $key = "Cw3eLYMOXslhAg5iK4N36khd/NdjIX70WOzzJmb4DCU="
    list($encrypted, $iv) = explode('::', base64_decode($cipherStr), 2); 
    $result = openssl_decrypt($encrypted, "AES-128-CBC", base64_decode($key), 0, $iv);

   it work！

but my java decrypt code :

    byte[] cipherBytes = Base64Utils.decodeFromString(test);
    byte[] iv =   Arrays.copyOfRange(cipherBytes, 130, 146);
    byte[] content = Arrays.copyOfRange(cipherBytes, 0, 128);
    byte[] key = Base64Utils.decodeFromString("Cw3eLYMOXslhAg5iK4N36khd/NdjIX70WOzzJmb4DCU=");

    Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
    SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES"); 
    IvParameterSpec ivParameterSpec = new IvParameterSpec(iv, 0, cipher.getBlockSize());
    cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, ivParameterSpec);
    String result = new String(cipher.doFinal(content));

It still doesnt work 。 i cant change the encrypt code
Please help me to solve this

hi sir i want this code in angular.

Hi. Is there a swift equivalent to above provided Java Decrypt Function?

    public static AesCipher decrypt(String secretKey, String cipherText) {
        try {
            // Check secret length
            if (!isKeyLengthValid(secretKey)) {
                throw new Exception("Secret key's length must be 128, 192 or 256 bits");
            }

            // Get raw encoded data
            byte[] encrypted = Base64.decode(cipherText, Base64.DEFAULT);

            // Slice initialization vector
            IvParameterSpec ivParameterSpec = new IvParameterSpec(encrypted, 0, INIT_VECTOR_LENGTH);
            // Set secret password
            SecretKeySpec secretKeySpec = new SecretKeySpec(secretKey.getBytes("UTF-8"), "AES");

            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, ivParameterSpec);

            // Trying to get decrypted text
            String result = new String(cipher.doFinal(encrypted, INIT_VECTOR_LENGTH, encrypted.length - INIT_VECTOR_LENGTH));

            // Return successful decoded object
            return new AesCipher(bytesToHex(ivParameterSpec.getIV()), result, null);
        } catch (Throwable t) {
            t.printStackTrace();
            // Operation failed
            return new AesCipher(null, null, t.getMessage());
        }
    }

my php decrypt code ：

    $key = "Cw3eLYMOXslhAg5iK4N36khd/NdjIX70WOzzJmb4DCU="
    list($encrypted, $iv) = explode('::', base64_decode($cipherStr), 2); 
    $result = openssl_decrypt($encrypted, "AES-128-CBC", base64_decode($key), 0, $iv);

   it work！

but my java decrypt code :

    byte[] cipherBytes = Base64Utils.decodeFromString(test);
    byte[] iv =   Arrays.copyOfRange(cipherBytes, 130, 146);
    byte[] content = Arrays.copyOfRange(cipherBytes, 0, 128);
    byte[] key = Base64Utils.decodeFromString("Cw3eLYMOXslhAg5iK4N36khd/NdjIX70WOzzJmb4DCU=");

    Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
    SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES"); 
    IvParameterSpec ivParameterSpec = new IvParameterSpec(iv, 0, cipher.getBlockSize());
    cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, ivParameterSpec);
    String result = new String(cipher.doFinal(content));

It still doesnt work 。 i cant change the encrypt code
Please help me to solve this

Hello, I also encountered such a problem. Have you solved it?

How to encrypt and decrypt above example in javascript?

Thank you so much.