66 lines
2.0 KiB
C#
66 lines
2.0 KiB
C#
using DigitalData.Core.Abstractions.Security;
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using Microsoft.IdentityModel.Tokens;
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using System.Security.Cryptography;
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namespace DigitalData.Core.Security.Cryptographer
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{
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public class RSAPrivateKey : RSAKeyBase, IAsymmetricPrivateKey, IAsymmetricKey
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{
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private string? _pem;
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public override string Pem
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{
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#pragma warning disable CS8603 // Possible null reference return.
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get => _pem;
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#pragma warning restore CS8603 // Possible null reference return.
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init
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{
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_pem = value;
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Init();
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}
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}
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public bool IsPemNull => _pem is null;
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public bool IsEncrypted { get; init; }
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private readonly Lazy<IAsymmetricPublicKey> _lazyPublicKey;
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public IAsymmetricPublicKey PublicKey => _lazyPublicKey.Value;
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public RSAPrivateKey()
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{
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_lazyPublicKey = new(() => new RSAPublicKey()
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{
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Pem = RSA.ExportRSAPublicKeyPem(),
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Padding = Padding
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});
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}
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public byte[] Decrypt(byte[] data) => RSA.Decrypt(data, Padding);
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public string Decrypt(string data) => RSA.Decrypt(data.Base64ToByte(), Padding).BytesToString();
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internal void SetPem(string pem)
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{
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_pem = pem;
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Init();
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}
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private void Init()
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{
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if (string.IsNullOrEmpty(_pem))
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throw PemIsNullException;
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if (IsEncrypted)
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RSA.ImportFromEncryptedPem(Pem, Secrets.PBE_PASSWORD.AsSpan());
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else
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RSA.ImportFromPem(Pem);
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}
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private InvalidOperationException PemIsNullException => new($"Pem is null or empty. Issuer: {Issuer}, Audience: {Audience}.");
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public SigningCredentials CreateSigningCredentials(string algorithm = SecurityAlgorithms.RsaSha256, string? digest = null)
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=> digest is null ? new(RsaSecurityKey, algorithm) : new(RsaSecurityKey, algorithm, digest);
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}
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} |