Encrypt a JWE with a Recipient Public Key

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.SetPublicKey, which sets the public key used to encrypt for a recipient. The example uses RSA-OAEP-256 key management with AES-256-GCM content encryption.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

func chilkatTest() {
    var success: Bool = false

    let jwe = CkoJwe()!

    //  Protected header: RSA-OAEP-256 key management with AES-256-GCM content encryption.
    let header = CkoJsonObject()!
    header.updateString(jsonPath: "alg", value: "RSA-OAEP-256")
    header.updateString(jsonPath: "enc", value: "A256GCM")
    success = jwe.setProtectedHeader(json: header)
    if success == false {
        print("\(jwe.lastErrorText!)")
        return
    }

    //  The file path is relative to the application's current working directory.  An absolute path
    //  may also be used.  Supply the path appropriate to your own environment.
    //  Load the recipient's public key.
    let pubKey = CkoPublicKey()!
    success = pubKey.load(fromFile: "qa_data/recipient_pubkey.pem")
    if success == false {
        print("\(pubKey.lastErrorText!)")
        return
    }

    //  Set the public key used to encrypt for recipient 0.
    success = jwe.setPublicKey(index: 0, pubKey: pubKey)
    if success == false {
        print("\(jwe.lastErrorText!)")
        return
    }

    var jweCompact: String? = jwe.encrypt(content: "This is the secret content.", charset: "utf-8")
    if jwe.lastMethodSuccess == false {
        print("\(jwe.lastErrorText!)")
        return
    }

    print("\(jweCompact!)")

}