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simple_mte_core_console

using System;

namespace MTE {
class demoCsMin {
static int Main() {
// Status.
MteStatus status;

// Input.
string input = "hello";

// Personalization string.
string personal = "demo";

// Initialize MTE license. If a license code is not required (e.g., trial
// mode), this can be skipped. This demo attempts to load the license
// info from the environment if required.
MteBase baseObj = new MteBase();
if (!baseObj.InitLicense("YOUR_COMPANY", "YOUR_LICENSE")) {
string company = Environment.GetEnvironmentVariable("MTE_COMPANY");
string license = Environment.GetEnvironmentVariable("MTE_LICENSE");
if (company == null || license == null ||
!baseObj.InitLicense(company, license)) {
status = MteStatus.mte_status_license_error;
Console.Error.WriteLine("License init error ({0}): {1}",
baseObj.GetStatusName(status),
baseObj.GetStatusDescription(status));
return (int)status;
}
}

// Output original data.
Console.WriteLine("Original data: {0}", input);

// Create the Encoder and Decoder.
MteEnc encoder = new MteEnc();
MteDec decoder = new MteDec();

// Create all-zero entropy for this demo. The nonce will also be set to 0.
// This should never be done in real applications.
int entropyBytes = encoder.GetDrbgsEntropyMinBytes(encoder.GetDrbg());
byte[] entropy = new byte[entropyBytes];

// Instantiate the Encoder.
encoder.SetEntropy(entropy);
encoder.SetNonce(0);
status = encoder.Instantiate(personal);
if (status != MteStatus.mte_status_success) {
Console.Error.WriteLine("Encoder instantiate error ({0}): {1}",
encoder.GetStatusName(status),
encoder.GetStatusDescription(status));
return (int)status;
}

// Encode the input.
string encoded = encoder.EncodeB64(input, out status);
if (status != MteStatus.mte_status_success) {
Console.Error.WriteLine("Encode error ({0}): {1}",
encoder.GetStatusName(status),
encoder.GetStatusDescription(status));
return (int)status;
}

// Display the message.
Console.WriteLine("Base64 message: {0}", encoded);

// Instantiate the Decoder.
decoder.SetEntropy(entropy);
decoder.SetNonce(0);
status = decoder.Instantiate(personal);
if (status != MteStatus.mte_status_success) {
Console.Error.WriteLine("Decoder instantiate error ({0}): {1}",
decoder.GetStatusName(status),
decoder.GetStatusDescription(status));
return (int)status;
}

// Decode the message.
string decoded = decoder.DecodeStrB64(encoded, out status);
if (decoder.StatusIsError(status)) {
Console.Error.WriteLine("Decode error ({0}): {1}",
decoder.GetStatusName(status),
decoder.GetStatusDescription(status));
return (int)status;
} else if (status != MteStatus.mte_status_success) {
Console.Error.WriteLine("Decode warning ({0}): {1}",
decoder.GetStatusName(status),
decoder.GetStatusDescription(status));
}

// Output the decoded data.
Console.WriteLine("Decoded data: {0}", decoded);

// Compare the decoded data against the original data.
if (decoded == input) {
Console.WriteLine("The original data and decoded data match.");
} else {
Console.WriteLine("The original data and decoded data DO NOT match.");
return -1;
}

// Success.
return 0;
}
}
}