44 lines
2.0 KiB
C#
44 lines
2.0 KiB
C#
using DigitalData.Core.Abstractions.Security;
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using Microsoft.Extensions.Logging;
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using System.Text;
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namespace DigitalData.Core.Security
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{
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public class CryptFactory : RSAFactory, ICryptFactory
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{
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private readonly IDictionary<string, IRSADecryptor> _decryptors;
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public IRSADecryptor this[string key] { get => _decryptors[key]; set => _decryptors[key] = value; }
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public Func<IRSADecryptor, string, string, string, string> RSADecryptorKeyFormatter { get; }
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public CryptFactory(ILogger<CryptFactory> logger, IDictionary<string, IRSADecryptor> decryptors, Func<IRSADecryptor, string, string, string, string> rsaDecryptorKeyFormatter) : base()
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{
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_decryptors = decryptors ?? new Dictionary<string, IRSADecryptor>();
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RSADecryptorKeyFormatter = rsaDecryptorKeyFormatter;
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logger?.LogInformation("Core.Secrets version: {Version}, Created on: {CreationDate}.", Secrets.Version, Secrets.CreationDate.ToString("dd.MM.yyyy"));
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}
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public bool TryGetRSADecryptor(string key, out IRSADecryptor? decryptor) => _decryptors.TryGetValue(key, out decryptor);
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public static string DefaultRSADecryptorKeyFormatter(IRSADecryptor decryptor, string issuer, string audience, string separator = "-_-")
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{
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var sb = new StringBuilder(issuer.Length + audience.Length + separator.Length * 2 + 20);
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sb.Append(issuer).Append(separator).Append(audience).Append(separator);
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if (decryptor.HasEncryptedPem)
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sb.Append("e-private").Append(separator).Append(decryptor.PasswordVersion);
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else
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sb.Append("private");
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var rsaKey = sb.Append(".pem").ToString();
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if (Path.GetInvalidFileNameChars().Any(rsaKey.Contains))
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throw new ArgumentException("RSA decryptor key name creation is forbidden. The key contains forbidden characters that are not allowed in file naming.", nameof(rsaKey));
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return rsaKey;
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}
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}
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} |