Sign a JWS with an HMAC Key from BinData

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetMacKeyBd, which sets the symmetric MAC key for a signature from the raw bytes in a BinData.

Background. This is the in-memory equivalent of SetMacKey, for when the key material is already available as bytes.

Chilkat Go Downloads

    success := false

    jws := chilkat.NewJws()

    //  Protected header specifying HMAC-SHA256.
    header := chilkat.NewJsonObject()
    header.UpdateString("alg","HS256")
    success = jws.SetProtectedHeader(0,header)
    if success == false {
        fmt.Println(jws.LastErrorText())
        jws.DisposeJws()
        header.DisposeJsonObject()
        return
    }

    bIncludeBom := false
    success = jws.SetPayload("This is the content to sign.","utf-8",bIncludeBom)
    if success == false {
        fmt.Println(jws.LastErrorText())
        jws.DisposeJws()
        header.DisposeJsonObject()
        return
    }

    //  Set the symmetric MAC key for signature 0 from the raw bytes in a BinData.  In production, obtain
    //  the key material from a secure source.
    bdKey := chilkat.NewBinData()
    bdKey.AppendEncoded("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU=","base64")
    success = jws.SetMacKeyBd(0,bdKey)
    if success == false {
        fmt.Println(jws.LastErrorText())
        jws.DisposeJws()
        header.DisposeJsonObject()
        bdKey.DisposeBinData()
        return
    }

    jwsCompact := jws.CreateJws()
    if jws.LastMethodSuccess() == false {
        fmt.Println(jws.LastErrorText())
        jws.DisposeJws()
        header.DisposeJsonObject()
        bdKey.DisposeBinData()
        return
    }

    fmt.Println(*jwsCompact)

    jws.DisposeJws()
    header.DisposeJsonObject()
    bdKey.DisposeBinData()