Swift

RSASSA-PSS Algorithm with SHA256 Hashing

See more RSA Examples

RSA encrypt a SHA256 hash with OAEP padding. Swift

func chilkatTest() {
    var success: Bool = false

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let privkey = CkoPrivateKey()!

    // Load the private key object from a PEM file.
    // (To load from a PEM string, call LoadPem instead.)
    success = privkey.loadPemFile(path: "somePath/myPrivateKey.pem")
    if success == false {
        print("\(privkey.lastErrorText!)")
        return
    }

    let rsa = CkoRsa()!
    // Use RSA-PSS by setting PkcsPadding = false
    rsa.pkcsPadding = false
    // Use SHA256
    rsa.oaepHash = "SHA-256"

    rsa.usePrivateKey(privKey: privkey)

    // Generate a base64 signature.
    rsa.encodingMode = "base64"

    var sigStr: String? = rsa.signStringENC(str: "String to be signed", hashAlg: "SHA-256")
    if rsa.lastMethodSuccess == false {
        print("\(rsa.lastErrorText!)")
        return
    }

    print("Signature: \(sigStr!)")

}