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xfox111
1b989e7b35
* New 2.0 version + DependencyInjection library * Updated docs and repo settings (devcontainers, vscode, github, etc.) * Added tests * Fixed bugs * Minor test project refactoring * Updated projects - Added symbol packages - Updated package versions to pre-release * Updated SECURITY.md * Added GitHub Actions workflows
60 lines
2.2 KiB
C#
60 lines
2.2 KiB
C#
using System.Security.Cryptography;
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namespace SimpleOTP;
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/// <summary>
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/// Provides methods for registering and retrieving <see cref="KeyedHashAlgorithm"/> providers.
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/// </summary>
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public static class HashAlgorithmProviders
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{
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private static readonly Dictionary<OtpAlgorithm, Func<KeyedHashAlgorithm>> _registeredProviders = new()
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{
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{ OtpAlgorithm.SHA1, () => new HMACSHA1() },
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{ OtpAlgorithm.SHA256, () => new HMACSHA256() },
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{ OtpAlgorithm.SHA512, () => new HMACSHA512() },
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{ OtpAlgorithm.MD5, () => new HMACMD5() }
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};
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/// <summary>
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/// Registers a new <see cref="KeyedHashAlgorithm"/> provider.
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/// </summary>
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/// <param name="algorithm">The algorithm to register.</param>
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public static void AddProvider<TAlgorithm>(OtpAlgorithm algorithm)
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where TAlgorithm : KeyedHashAlgorithm, new() =>
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_registeredProviders[algorithm] = () => new TAlgorithm();
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/// <summary>
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/// Retrieves a <see cref="KeyedHashAlgorithm"/> provider.
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/// </summary>
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/// <param name="algorithm">The algorithm to retrieve.</param>
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/// <returns>The <see cref="KeyedHashAlgorithm"/> provider, or <c>null</c> if not found.</returns>
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public static KeyedHashAlgorithm? GetProvider(OtpAlgorithm algorithm)
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{
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if (_registeredProviders.TryGetValue(algorithm, out var provider))
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return provider();
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return null;
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}
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/// <summary>
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/// Removes a <see cref="KeyedHashAlgorithm"/> provider.
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/// </summary>
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/// <param name="algorithm">The algorithm to remove.</param>
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public static void RemoveProvider(OtpAlgorithm algorithm) =>
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_registeredProviders.Remove(algorithm);
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/// <summary>
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/// Determines whether a <see cref="KeyedHashAlgorithm"/> provider is registered.
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/// </summary>
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/// <param name="algorithm">The algorithm to check.</param>
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/// <returns><c>true</c> if the <see cref="KeyedHashAlgorithm"/> provider is registered; otherwise, <c>false</c>.</returns>
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public static bool IsRegistered(OtpAlgorithm algorithm) =>
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_registeredProviders.ContainsKey(algorithm);
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/// <summary>
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/// Removes all registered <see cref="KeyedHashAlgorithm"/> providers.
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/// </summary>
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/// <remarks>This method also clears default providers. Use with caution.</remarks>
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public static void ClearProviders() => _registeredProviders.Clear();
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}
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