/// <summary>
/// Encrypt data with the specified key, and return the result.
/// </summary>
/// <param name="sourceData">A byte array with the source data.</param>
/// <param name="useSharedKey">Whether to use the Zymbit cloud key.</param>
/// <returns>The encrypted data.</returns>
public byte[] LockData(byte[] sourceData, bool useSharedKey = false)
{
NativeHelper.Validate(NativeMethods.zkLockDataB2B(_ref, sourceData, sourceData.Length, out var output, out var outputLen, useSharedKey));
return(NativeHelper.PtrToArray(output, outputLen));
}
/// <summary>
/// Return the ECDSA public key at the specified slot.
/// </summary>
/// <param name="slot">The Zymkey slot.</param>
/// <returns>The ECDSA public key.</returns>
public byte[] GetEcdsaPubkey(int slot = 0)
{
NativeHelper.Validate(NativeMethods.zkGetECDSAPubKey(_ref, out var publicKey, out var publicKeyLen, slot));
return(NativeHelper.PtrToArray(publicKey, publicKeyLen));
}
/// <summary>
/// Encrypt data from a file with the specified key, and return the result.
/// </summary>
/// <param name="sourceFile">The source filename.</param>
/// <param name="useSharedKey">Whether to use the Zymbit cloud key.</param>
/// <returns>The encrypted data.</returns>
public byte[] LockData(string sourceFile, bool useSharedKey = false)
{
NativeHelper.Validate(NativeMethods.zkLockDataF2B(_ref, sourceFile, out var output, out var outputLen, useSharedKey));
return(NativeHelper.PtrToArray(output, outputLen));
}
/// <summary>
/// Generate an ECDSA signature from a digest.
/// </summary>
/// <param name="digest">The digest to sign.</param>
/// <param name="slot">The Zymkey key slot to use for the operation.</param>
/// <returns>The ECDSA signature.</returns>
public byte[] GenerateEcdsaSignatureFromDigest(byte[] digest, int slot = 0)
{
NativeHelper.Validate(NativeMethods.zkGenECDSASigFromDigest(_ref, digest, slot, out var output, out var outputLen));
return(NativeHelper.PtrToArray(output, outputLen));
}