(Go) Generate new DSA Key from OpenSSL Parameters File

Generates a new DSA key from an OpenSSL-created parameters file (DER and PEM formats supported). Examples of using OpenSSL to create parameter files are shown here:

openssl dsaparam -outform DER 1024 <  seedData.txt >dsaparam.der

openssl dsaparam 1024 < seedData.txt >dsaparam.pem

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

    dsa := chilkat.NewDsa()

    success := dsa.GenKeyFromParamsDerFile("dsaparam.der")
    if success != true {
        fmt.Println(dsa.LastErrorText())
        dsa.DisposeDsa()
        return
    }

    // To generate a key from PEM, call GenKeyFromParamsPem 
    // (for an in-memory PEM string) or GenKeyFromParamsFilePem
    // for a PEM file.

    // The public and private keys may now be exported to PEM, DER,
    // and XML formatted files.

    var pemStr *string = new(string)
    var xmlStr *string = new(string)

    // First for the public key...
    // The public key never needs to be encrypted.

    // Save the public key in PEM format:
    pemStr = dsa.ToPublicPem()
    // This example will not check the return value of SaveText...
    success = dsa.SaveText(*pemStr,"dsa_pub.pem")

    // Save the public key in DER format:
    success = dsa.ToPublicDerFile("dsa_pub.der")

    bPublicOnly := true
    // Save to XML
    xmlStr = dsa.ToXml(bPublicOnly)
    success = dsa.SaveText(*pemStr,"dsa_pub.xml")

    // ------------------------------------
    // Now for the private key....
    // ------------------------------------

    // Unencrypted PEM:
    pemStr = dsa.ToPem()
    success = dsa.SaveText(*pemStr,"dsa_priv.pem")

    // Encrypted PEM:
    pemStr = dsa.ToEncryptedPem("myPassword")
    success = dsa.SaveText(*pemStr,"dsa_privEncrypted.pem")

    // DER:
    success = dsa.ToDerFile("dsa_priv.der")

    // XML:
    bPublicOnly = false
    xmlStr = dsa.ToXml(bPublicOnly)
    success = dsa.SaveText(*pemStr,"dsa_priv.xml")

    fmt.Println("Finished!")

    dsa.DisposeDsa()