RSACryptor

RSA encryption and decryption class written in Swift 2

What It Is

This is the wrapper for Security framework written in Swift 2. It can do three things:

• It can generate public/private RSA keys
• It can encrypt NSData with public key
• It can decrypt NSData with private key

Sample Usage

let text = "Hello World"
print("text to encrypt => \(text)")
    
let cryptor = RSACryptor(keySize: 1024)
    
guard let
  data = text.dataUsingEncoding(NSUTF8StringEncoding),
  rsaKeys = cryptor.generateKeyPair(),
  encryptedData = cryptor.encryptData(data, key: rsaKeys.publicKey),
  decryptedData = cryptor.decryptData(encryptedData, key: rsaKeys.privateKey),
  decryptedText = String(data: decryptedData, encoding: NSUTF8StringEncoding)
else {
  print("error")
  return true
}

print("data to encrypt => \(data)")
print("encrypted data => \(encryptedData)")
print("decrypted text => \(decryptedText)")

Note : The keySize parameter is important. If you choose 1024 as keySize then you can encrypt max 1024 bit data. That means data.length <= 128. Otherwise the encryption will be failed.

Licence

There is no licence. You can use it anyway you want.