// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Diagnostics.CodeAnalysis;
 
namespace Microsoft.AspNetCore.DataProtection;
 
/// <summary>
/// An interface that can provide data protection services.
/// </summary>
public interface IDataProtector : IDataProtectionProvider
{
    /// <summary>
    /// Cryptographically protects a piece of plaintext data.
    /// </summary>
    /// <param name="plaintext">The plaintext data to protect.</param>
    /// <returns>The protected form of the plaintext data.</returns>
    byte[] Protect(byte[] plaintext);
 
    /// <summary>
    /// Cryptographically unprotects a piece of protected data.
    /// </summary>
    /// <param name="protectedData">The protected data to unprotect.</param>
    /// <returns>The plaintext form of the protected data.</returns>
    /// <exception cref="System.Security.Cryptography.CryptographicException">
    /// Thrown if the protected data is invalid or malformed.
    /// </exception>
    byte[] Unprotect(byte[] protectedData);
}