Go

Get ECC Private Key in JWK Format (JSON Web Key)

See more ECC Examples

Demonstrates how to get an ECC private key in JWK (JSON Web Key) format.

Note: This example requires Chilkat v9.5.0.66 or later.

Go

    success := false

    // Note: This example requires Chilkat v9.5.0.66 or later.

    // Load a PEM file into memory.
    sbPem := chilkat.NewStringBuilder()
    success = sbPem.LoadFile("qa_data/pem/ecc_privKey.pem","utf-8")
    if success != true {
        fmt.Println("Failed to load PEM file.")
        sbPem.DisposeStringBuilder()
        return
    }

    // Load the PEM into a private key object.
    privKey := chilkat.NewPrivateKey()
    success = privKey.LoadPem(*sbPem.GetAsString())
    if success != true {
        fmt.Println(privKey.LastErrorText())
        sbPem.DisposeStringBuilder()
        privKey.DisposePrivateKey()
        return
    }

    // Get the private key in JWK format:
    jwk := privKey.GetJwk()

    // The GetJwk method will return the JWK in the most compact JSON format possible,
    // as a single line with no extra whitespace.  To get a more human-readable JWK (for this example),
    // load into a Chilkat JSON object and emit non-compact:

    json := chilkat.NewJsonObject()
    json.Load(*jwk)
    json.SetEmitCompact(false)
    fmt.Println("ECC Private Key in JWK format:")
    fmt.Println(*json.Emit())

    // Sample output:
    // { 
    //   "kty": "EC",
    //   "crv": "P-256",
    //   "x": "oBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxE",
    //   "y": "vvQyxZkUjJQUPU_0bCy3Pj5qQdfu8jwEfqEeYGZ95CU",
    //   "d": "EbVzfPnZPxfAyxqEZV05laAoJAl-_6Xt2O4mOB611sM"
    // }
    // 

    // Additional information can be added like this:
    json.AppendString("use","enc")
    json.AppendString("kid","123ABC")

    // Now examine the JSON:
    fmt.Println(*json.Emit())

    // { 
    //   "kty": "EC",
    //   "crv": "P-256",
    //   "x": "oBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxE",
    //   "y": "vvQyxZkUjJQUPU_0bCy3Pj5qQdfu8jwEfqEeYGZ95CU",
    //   "d": "EbVzfPnZPxfAyxqEZV05laAoJAl-_6Xt2O4mOB611sM",
    //   "use": "enc",
    //   "kid": "123ABC"
    // }

    sbPem.DisposeStringBuilder()
    privKey.DisposePrivateKey()
    json.DisposeJsonObject()