73 lines
2.6 KiB
C#
73 lines
2.6 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 BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.Cms;
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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.Crypto.Parameters;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Security;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.X509;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Cms
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{
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public class KeyTransRecipientInfoGenerator
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: RecipientInfoGenerator
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{
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private readonly IKeyWrapper m_keyWrapper;
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private IssuerAndSerialNumber m_issuerAndSerialNumber;
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private Asn1OctetString m_subjectKeyIdentifier;
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public KeyTransRecipientInfoGenerator(X509Certificate recipCert, IKeyWrapper keyWrapper)
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: this(new IssuerAndSerialNumber(recipCert.IssuerDN, new DerInteger(recipCert.SerialNumber)), keyWrapper)
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{
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}
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public KeyTransRecipientInfoGenerator(IssuerAndSerialNumber issuerAndSerial, IKeyWrapper keyWrapper)
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{
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m_issuerAndSerialNumber = issuerAndSerial;
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m_keyWrapper = keyWrapper;
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}
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public KeyTransRecipientInfoGenerator(byte[] subjectKeyID, IKeyWrapper keyWrapper)
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{
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m_subjectKeyIdentifier = new DerOctetString(subjectKeyID);
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m_keyWrapper = keyWrapper;
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}
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public RecipientInfo Generate(KeyParameter contentEncryptionKey, SecureRandom random)
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{
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AlgorithmIdentifier keyEncryptionAlgorithm = AlgorithmDetails;
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byte[] encryptedKeyBytes = GenerateWrappedKey(contentEncryptionKey);
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RecipientIdentifier recipId;
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if (m_issuerAndSerialNumber != null)
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{
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recipId = new RecipientIdentifier(m_issuerAndSerialNumber);
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}
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else
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{
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recipId = new RecipientIdentifier(m_subjectKeyIdentifier);
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}
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return new RecipientInfo(new KeyTransRecipientInfo(recipId, keyEncryptionAlgorithm,
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new DerOctetString(encryptedKeyBytes)));
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}
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protected virtual AlgorithmIdentifier AlgorithmDetails
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{
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get { return (AlgorithmIdentifier)m_keyWrapper.AlgorithmDetails; }
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}
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protected virtual byte[] GenerateWrappedKey(KeyParameter contentEncryptionKey)
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{
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return m_keyWrapper.Wrap(contentEncryptionKey.GetKey()).Collect();
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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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