Swift

Load a Public Key from a String

Demonstrates the Chilkat PublicKey.LoadFromString method, which loads a public key from a string. The only argument is the string. Chilkat examines the content and recognizes PEM public keys, unencrypted PEM private keys (taking only the public portion), XML, JWK, and more.

Background: This is the forgiving text loader: rather than requiring you to know the exact format, it inspects whatever string you provide and figures it out. A useful convenience is that it accepts an unencrypted private key too and keeps only the public half — handy when you have a key pair but need just the public key. Use it whenever the textual format is uncertain or varies by source.

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Swift


func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the PublicKey.LoadFromString method, which loads a public key from a string.  The
    //  only argument is the string.  Chilkat examines the content and recognizes PEM public keys,
    //  unencrypted PEM private keys (using only the public portion), XML, JWK, and more.

    let pubKey = CkoPublicKey()!

    //  The PEM text of a public key.
    var keyText: String? = "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkq...IDAQAB\n-----END PUBLIC KEY-----"

    success = pubKey.load(fromString: keyText)
    if success == false {
        print("\(pubKey.lastErrorText!)")
        return
    }

    print("Loaded a \(pubKey.keyType!) public key.")

}