62 lines
2.4 KiB
C#
62 lines
2.4 KiB
C#
using System;
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using gehGassi.Core.Interfaces;
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using Org.BouncyCastle.Crypto;
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using Org.BouncyCastle.Crypto.Generators;
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using Org.BouncyCastle.Pkcs;
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using Org.BouncyCastle.Security;
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using Org.BouncyCastle.X509;
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namespace gehGassi.Core.Services
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{
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/// <summary>
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/// Service der eine Kombination aus private und public Key erstellen kann
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/// </summary>
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public class KeyGeneratorService : IKeyGeneratorService
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{
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/// <summary>
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/// Erstellt einen public und einen Private key mit Standard 1024 bit Verschlüsselung
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/// </summary>
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/// <returns>PrivateKey und Public Key</returns>
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public Tuple<string, string> GenerateKeys()
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{
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return GenerateKeys(1024);
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}
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/// <summary>
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/// Erstellt einen public und einen Private key
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/// </summary>
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/// <param name="keySize">Schlüssel Größe</param>
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/// <returns>PrivateKey und Public Key</returns>
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public Tuple<string, string> GenerateKeys(int keySize)
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{
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var secureRandom = new SecureRandom();
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return GenerateKeys(keySize, secureRandom.GenerateSeed(32));
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}
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/// <summary>
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/// Erstellt einen public und einen Private key
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/// </summary>
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/// <param name="keySize">Schlüssel Größe</param>
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/// <param name="seed">Seed</param>
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/// <returns>PrivateKey und Public Key</returns>
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public Tuple<string, string> GenerateKeys(int keySize, byte[] seed)
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{
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var generator = new RsaKeyPairGenerator();
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var secureRandom = new SecureRandom();
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secureRandom.SetSeed(seed);
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generator.Init(new KeyGenerationParameters(secureRandom, keySize));
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var pair = generator.GenerateKeyPair();
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var privateKeyInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(pair.Private);
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var serializedPrivateBytes = privateKeyInfo.ToAsn1Object().GetDerEncoded();
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var serializedPrivate = Convert.ToBase64String(serializedPrivateBytes);
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var publicKeyInfo = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(pair.Public);
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var serializedPublicBytes = publicKeyInfo.ToAsn1Object().GetDerEncoded();
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var serializedPublic = Convert.ToBase64String(serializedPublicBytes);
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return new Tuple<string, string>(serializedPrivate, serializedPublic);
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}
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}
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}
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