113 lines
4.1 KiB
C#
113 lines
4.1 KiB
C#
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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using System;
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using System.IO;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.Pkcs;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.X509;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.IO;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Pkcs
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{
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/// <summary>
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/// A holding class for a PKCS#8 encrypted private key info object that allows for its decryption.
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/// </summary>
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public class Pkcs8EncryptedPrivateKeyInfo
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{
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private EncryptedPrivateKeyInfo encryptedPrivateKeyInfo;
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private static EncryptedPrivateKeyInfo parseBytes(byte[] pkcs8Encoding)
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{
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try
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{
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return EncryptedPrivateKeyInfo.GetInstance(pkcs8Encoding);
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}
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catch (ArgumentException e)
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{
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throw new PkcsIOException("malformed data: " + e.Message, e);
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}
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catch (Exception e)
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{
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throw new PkcsIOException("malformed data: " + e.Message, e);
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}
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}
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/// <summary>
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/// Base constructor from a PKCS#8 EncryptedPrivateKeyInfo object.
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/// </summary>
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/// <param name="encryptedPrivateKeyInfo">A PKCS#8 EncryptedPrivateKeyInfo object.</param>
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public Pkcs8EncryptedPrivateKeyInfo(EncryptedPrivateKeyInfo encryptedPrivateKeyInfo)
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{
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this.encryptedPrivateKeyInfo = encryptedPrivateKeyInfo;
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}
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/// <summary>
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/// Base constructor from a BER encoding of a PKCS#8 EncryptedPrivateKeyInfo object.
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/// </summary>
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/// <param name="encryptedPrivateKeyInfo">A BER encoding of a PKCS#8 EncryptedPrivateKeyInfo objects.</param>
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public Pkcs8EncryptedPrivateKeyInfo(byte[] encryptedPrivateKeyInfo) : this(parseBytes(encryptedPrivateKeyInfo))
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{
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}
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/// <summary>
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/// Returns the underlying ASN.1 structure inside this object.
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/// </summary>
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/// <returns>Return the EncryptedPrivateKeyInfo structure in this object.</returns>
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public EncryptedPrivateKeyInfo ToAsn1Structure()
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{
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return encryptedPrivateKeyInfo;
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}
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/// <summary>
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/// Returns a copy of the encrypted data in this structure.
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/// </summary>
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/// <returns>Return a copy of the encrypted data in this object.</returns>
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public byte[] GetEncryptedData()
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{
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return encryptedPrivateKeyInfo.GetEncryptedData();
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}
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/// <summary>
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/// Return a binary ASN.1 encoding of the EncryptedPrivateKeyInfo structure in this object.
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/// </summary>
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/// <returns>A byte array containing the encoded object.</returns>
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public byte[] GetEncoded()
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{
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return encryptedPrivateKeyInfo.GetEncoded();
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}
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/// <summary>
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/// Get a decryptor from the passed in provider and decrypt the encrypted private key info, returning the result.
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/// </summary>
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/// <param name="inputDecryptorProvider">A provider to query for decryptors for the object.</param>
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/// <returns>The decrypted private key info structure.</returns>
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public PrivateKeyInfo DecryptPrivateKeyInfo(IDecryptorBuilderProvider inputDecryptorProvider)
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{
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try
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{
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ICipherBuilder decryptorBuilder = inputDecryptorProvider.CreateDecryptorBuilder(encryptedPrivateKeyInfo.EncryptionAlgorithm);
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ICipher encIn = decryptorBuilder.BuildCipher(new MemoryInputStream(encryptedPrivateKeyInfo.GetEncryptedData()));
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byte[] data;
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using (var strm = encIn.Stream)
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{
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data = Streams.ReadAll(encIn.Stream);
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}
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return PrivateKeyInfo.GetInstance(data);
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}
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catch (Exception e)
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{
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throw new PkcsException("unable to read encrypted data: " + e.Message, e);
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}
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}
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}
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}
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#pragma warning restore
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#endif
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