Openssl-aes-256-cbc encryption in iOS - encryption

Question

I am working on Encryption,Decryption in swift OpenSSl AES-256-CBC. I have checked with many third- party libraries or pods i.e. CryptoSwift and many others. But I am always getting HMAc is Not valid from Php back end team.
Where as in android they have done this:
Following is my android method:
public EncryptedData encrypt(Object data) throws Exception {
String text;
if (data instanceof String) {
text = String.valueOf(data);
} else {
text = (new Gson()).toJson(data);
}
if (!this.doAction) {
return new EncryptedData(text, "");
} else {
this.ivspec = new IvParameterSpec(this.getIV1().getBytes());
this.keyspec = new SecretKeySpec(this.getKey1().getBytes(), "AES");
if (text != null && text.length() != 0) {
byte[] encrypted;
try {
this.cipher.init(Cipher.ENCRYPT_MODE, this.keyspec, this.ivspec);
encrypted = this.cipher.doFinal(this.padString(text).getBytes());
} catch (Exception var5) {
throw new Exception("[encrypt] " + var5.getMessage());
}
String encryptedData = new String(Base64.encode(encrypted, Base64.DEFAULT))
.replace("\n", "");
SecretKeySpec macKey = new SecretKeySpec(getKey1().getBytes(), "HmacSHA256");
Mac hmacSha256 = Mac.getInstance("HmacSHA256");
hmacSha256.init(macKey);
hmacSha256.update((Base64.encodeToString(getIV1().getBytes(), Base64.DEFAULT).trim() + encryptedData.trim()).getBytes());
byte[] calcMac = hmacSha256.doFinal();
return new EncryptedData(encryptedData, bytesToHex(calcMac));
} else {
throw new Exception("Empty string");
}
}
}
Any one know how this will works in iOS.
Any help will be appreciated.
Thanks

Answer 1

Here is a simple HMAC implement in Swift 4:
0xa6a/HMAC
No third-party library is needed. Just create a bridging header and import <CommonCrypto/CommonCrypto.h> in it.
Have a try and happy coding.