Encrypt Content to a JWE

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.Encrypt, which encrypts a string and returns the resulting JWE. The charset argument converts the text to bytes before encryption.

Background. JWE (JSON Web Encryption) protects content with a content-encryption algorithm (the header enc value) while the content-encryption key is managed by the key-management algorithm (the header alg value). This example uses AES key wrapping with a symmetric wrapping key.

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    success := false

    jwe := chilkat.NewJwe()

    //  Set the JWE protected header, specifying the key-management algorithm (alg) and the content-
    //  encryption algorithm (enc).
    header := chilkat.NewJsonObject()
    header.UpdateString("alg","A256KW")
    header.UpdateString("enc","A256GCM")
    success = jwe.SetProtectedHeader(header)
    if success == false {
        fmt.Println(jwe.LastErrorText())
        jwe.DisposeJwe()
        header.DisposeJsonObject()
        return
    }

    //  The 256-bit key-wrapping key (base64) for recipient index 0.  In production, obtain the key
    //  from a secure source rather than hard-coding it.
    base64Key := "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU="
    success = jwe.SetWrappingKey(0,base64Key,"base64")
    if success == false {
        fmt.Println(jwe.LastErrorText())
        jwe.DisposeJwe()
        header.DisposeJsonObject()
        return
    }

    //  Encrypt the content.  The 2nd argument is the charset used to convert the text to bytes.  The
    //  returned string is the JWE (compact serialization by default).
    jweCompact := jwe.Encrypt("This is the secret content.","utf-8")
    if jwe.LastMethodSuccess() == false {
        fmt.Println(jwe.LastErrorText())
        jwe.DisposeJwe()
        header.DisposeJsonObject()
        return
    }

    fmt.Println(*jweCompact)

    jwe.DisposeJwe()
    header.DisposeJsonObject()