69 lines
2.1 KiB
C#
69 lines
2.1 KiB
C#
using MfGames.Crypto.Hashes;
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namespace MfGames.Crypto.Extensions;
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/// <summary>
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/// Extension methods on byte arrays.
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/// </summary>
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public static class CryptoByteArrayExtensions
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{
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/// <summary>
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/// Converts the input into a hash string, such as hex or base64.
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/// </summary>
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/// <param name="input"></param>
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/// <param name="format"></param>
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/// <returns></returns>
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public static string? ToByteString(
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this byte[]? input,
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ByteStringFormat format = ByteStringFormat.LowercaseHex
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)
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{
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if (input == null)
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{
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return null;
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}
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switch (format)
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{
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case ByteStringFormat.LowercaseHex:
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return Convert.ToHexString(input).ToLowerInvariant();
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case ByteStringFormat.UppercaseHex:
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return Convert.ToHexString(input);
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case ByteStringFormat.Base64:
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return Convert.ToBase64String(input);
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default:
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throw new ArgumentOutOfRangeException(nameof(format), format, null);
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}
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}
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/// <summary>
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/// Hashes the given input and returns the results.
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/// </summary>
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/// <param name="input">A byte array or null.</param>
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/// <param name="hash">The type of hash requested.</param>
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/// <returns>Null if input is null, otherwise the hash value.</returns>
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public static byte[]? ToHashBytes(this byte[]? input, HashType hash = HashType.Sha512)
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{
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return input == null ? null : hash.CreateHash().ComputeHash(input);
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}
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/// <summary>
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/// Hashes the given input and returns the results as a string.
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/// </summary>
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/// <param name="input">A byte array or null.</param>
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/// <param name="hash">The type of hash requested.</param>
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/// <param name="format">The format of the requested string.</param>
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/// <returns>Null if input is null, otherwise the hash value.</returns>
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public static string? ToHashString(
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this byte[]? input,
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HashType hash = HashType.Sha512,
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ByteStringFormat format = ByteStringFormat.LowercaseHex
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)
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{
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return input?.ToHashBytes(hash)?.ToByteString(format);
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}
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}
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