Encryption Framework

The Encryption framework is a Swift package that provides data encryption and decryption using the AES and RSA algorithms.

Installation

To install the framework using the Swift Package Manager, follow these steps:

1. Open your project in Xcode.
2. Select the xcodeproject file in the navigator.
3. In the "Frameworks, Libraries, and Embedded Content" section, press the + button.
4. Select Add Other..., then Add package dependency.
5. Enter the framework URL in the search field: https://github.com/qodeca/Encryption
6. Press Add package and confirm in the dialog window by pressing Add package.

Configuration

To use the encryption features in your code, you need to import the Encryption framework using import Encryption. To use AES or RSA encryption, you will need to provide encryption keys to these algorithms. You can load these keys from a String or from a file in the application bundle. Be sure not to store sensitive keys in unencrypted form, as they could be retrieved from the application.

Examples

AES

import Encryption
import CommonCrypto

class AESWrapper {

    private let aes: AES

    init(aesKey: AESKey) {
        self.aes = .init(key: aesKey, options: CCOptions(ccPKCS7Padding))
    }
    
    func encrypt(message: String) {
        let decrypted = try! DecryptedValue(decryptedString: message)
        let encrypted = try! decrypted.encrypted(using: aes)
        print(encrypted)
    }
    
    func decrypt(message: String) {
        let encrypted = try! EncryptedValue(encryptedString: message)
        let decrypted = try! encrypted.decrypted(using: aes)
        print(try! decrypted.string())
    }
    
}

let aesKey = AESKey(
    secret: "t6w9z$C&F)J@NcRf",
    initialVector: "6CF105AB-4D16-44"
)

let aesWrapper = AESWrapper(aesKey: aesKey)
aesWrapper.encrypt(message: "Hello World!")
aesWrapper.decrypt(message: "aE0Pq1ddC6a1agsa0RI2NQ==")

RSA

import Encryption
import CommonCrypto

class RSAWrapper {

    private let rsa: RSA

    init(privateKey: RSAKey, publicKey: RSAKey) {
        self.rsa = .init(publicKey: publicKey, privateKey: privateKey, padding: .OAEP)
    }
    
    func encrypt(message: String) {
        let decrypted = try! DecryptedValue(decryptedString: message)
        let encrypted = try! decrypted.encrypted(using: rsa)
        print(encrypted.base64String)
    }
    
    func decrypt(message: String) {
        let encrypted = try! EncryptedValue(encryptedString: message)
        let decrypted = try! encrypted.decrypted(using: rsa)
        print(try! decrypted.string())
    }
    
}

let rsaPublicKeyClient = try! RSAKey(
    publicKey: """
    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCTI9m6COiT141l0ROqI548PDlU
    5IfkAI2VzKsC3AbXU8SVky1SVAbHPYqTWxJA5qpZgqO402XojmEIr2dk752udgB5
    IB3PTzPT5D27QZTRKmTnZ7kBovdQIJnTDvnU6F3Nu2PPh+dosi6R7qzKLm5LgSOF
    L4JLwC5rCy2+kvk4hwIDAQAB
    """
)

let rsaPublicKeyServer = try! RSAKey(
    publicKey: """
    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC7/125XuLT7TWDnpZcjRakD9ng
    ygXzBVoOoXJcdr7UiSAMmd8YqpHZBx8PQGqZaqj/NDB9ZhUQalNZSwFRfoom+S01
    R4QdkG4fzN366YpwXHL6zM5bVviVX9bBJbHMj2LTGMVq8an3BWpSoRCIo7ame0Tj
    FVWrW+78Cj3cxMnV+QIDAQAB
    """
)

let rsaPrivateKeyClient = try! RSAKey(
    privateKey: """
    MIICXAIBAAKBgQC7/125XuLT7TWDnpZcjRakD9ngygXzBVoOoXJcdr7UiSAMmd8Y
    qpHZBx8PQGqZaqj/NDB9ZhUQalNZSwFRfoom+S01R4QdkG4fzN366YpwXHL6zM5b
    VviVX9bBJbHMj2LTGMVq8an3BWpSoRCIo7ame0TjFVWrW+78Cj3cxMnV+QIDAQAB
    AoGAX1NSY99QJuO94dp1JcLIuzHqaYgm0h5hls+YXHg9tSk+3gTb0fcTczegMSyZ
    oOcrgBQnjj5H6gXv83QL3BXM2K0lj9Xb+drqlz7trrNxHiJvJZuhnqRqita1cTgo
    k6dABlxSHH4Zai7l4puiCXjWNzhzDTKpQb2f19gi+YZF4t0CQQDsIpqHOrH/w5G9
    aJ4Byadq9X8KjIlqA8fvc27LHm+OSW7U9Eolj7yprrY9+ojQyCuuNUdjJ+dhBFIP
    DGGbGiXbAkEAy9ASgkIqYK0//NLpQ8w0e2YUVNE6pBvvYR3/QfLZ+2C6/2Wr3KiH
    EaGDxRgxrNzOnJJ1GGEtNoHx1VTMGHE9uwJAcP8KFUYIIYzzc8DZQ5+8xpkdpu2j
    YCDZDwOc9APnfB41tCAGTz0eGdCqErSNveLbzCxgsdlJhoprvhm9p1v22wJATutu
    D1RRloffjCWbP6518AZx/vnZrCxJACEec0n3UFh/cF/NMa9sRc51+L7KlXYW5xfr
    EZqnaEDfBM1GDnzi+wJBAML1lFZoKg0cPNAqKXGIvrfI9jPUgI4G8ITLPNkioZ0t
    bma0mK2oKM5Y3IISCtf99yJswvf4FFf521vftr+s7yg=
    """
)

let rsaPrivateKeyServer = try! RSAKey(
    privateKey: """
    MIICXgIBAAKBgQCTI9m6COiT141l0ROqI548PDlU5IfkAI2VzKsC3AbXU8SVky1S
    VAbHPYqTWxJA5qpZgqO402XojmEIr2dk752udgB5IB3PTzPT5D27QZTRKmTnZ7kB
    ovdQIJnTDvnU6F3Nu2PPh+dosi6R7qzKLm5LgSOFL4JLwC5rCy2+kvk4hwIDAQAB
    AoGAImHUNKZ0QmeyAMK0R6N/DDA+bVnhbyO58fEbXNWxO4u1egYkJwK/ersksH4t
    a8D6uWPPghbTz13FytPB41IilBBtpJGYz/9A2EMz6+wdQkBvmx130Wbnlr27jQPv
    rXXJM9UVRXMFjnspE5u+OnhWPwFAaiB8SAEoeUZkVGVg+VECQQDZr4hSaWt2HsCW
    gGzARiWgPwhpiTSqWctBacElcCx9pNpdGLzV18CjoV8D0Jo62gvJnazLFUhbWTF0
    pr9dp0UbAkEArQmtYYY5p2LZh6Slu37GUy+KdIaLw4ozTjclNkGEwJoZE5We6Rv3
    4ksFbyi2gv8ljACOdLN7mLaxZifdlD+NBQJBAJMyAXEQfayqkLlz75V4GVspJCwQ
    rf7+ptT9iLAjEMKI5WsMHixPLqC2roPq208uP8g+CShtpLa4MhvZ4Q6X278CQQCo
    Ke55B+RB+zwiqe1zIQqGz34ELrnniAjCa69bYiMsttXGBbORImAuaPBYDj4JYwNP
    Yz8OxVtJl8sh135s07ItAkEAij7iUcAjHrdMYrfAzhL190fm5G0v7ji7SG8ix38U
    FPMsJKfgpYJ/1zHdhJw57R86zbizpfaF06VFLm7x6XKV7g==
    """
)

let rsaWrapperClient = RSAWrapper(privateKey: rsaPrivateKeyClient, publicKey: rsaPublicKeyClient)
let rsaWrapperServer = RSAWrapper(privateKey: rsaPrivateKeyServer, publicKey: rsaPublicKeyServer)
rsaWrapperServer.encrypt(message: "Hello World!")
rsaWrapperClient.decrypt(message: "aNlCRLZa1msSqQkCm0INRvgx++TKZ695pMwXPgmTOhmJceaJf4nEikyh5jbdH9cYEx8wQLbsraE16Ri86luoFd02mcRT0EBEXan2mRYnJVZhbRkdxgFJVipvTAt/fAp6+JcvoquN7boJvH2zzX3RxPkNbsGNqhUNaVk58p87YWc=")