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66 lines
1.9 KiB
66 lines
1.9 KiB
#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.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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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Cms |
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{ |
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/** |
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* the RecipientInfo class for a recipient who has been sent a message |
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* encrypted using a secret key known to the other side. |
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*/ |
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public class KekRecipientInformation |
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: RecipientInformation |
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{ |
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private KekRecipientInfo info; |
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internal KekRecipientInformation( |
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KekRecipientInfo info, |
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CmsSecureReadable secureReadable) |
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: base(info.KeyEncryptionAlgorithm, secureReadable) |
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{ |
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this.info = info; |
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this.rid = new RecipientID(); |
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KekIdentifier kekId = info.KekID; |
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rid.KeyIdentifier = kekId.KeyIdentifier.GetOctets(); |
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} |
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/** |
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* decrypt the content and return an input stream. |
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*/ |
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public override CmsTypedStream GetContentStream( |
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ICipherParameters key) |
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{ |
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try |
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{ |
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byte[] encryptedKey = info.EncryptedKey.GetOctets(); |
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IWrapper keyWrapper = WrapperUtilities.GetWrapper(keyEncAlg.Algorithm.Id); |
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keyWrapper.Init(false, key); |
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KeyParameter sKey = ParameterUtilities.CreateKeyParameter( |
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GetContentAlgorithmName(), keyWrapper.Unwrap(encryptedKey, 0, encryptedKey.Length)); |
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return GetContentFromSessionKey(sKey); |
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} |
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catch (SecurityUtilityException e) |
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{ |
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throw new CmsException("couldn't create cipher.", e); |
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} |
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catch (InvalidKeyException e) |
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{ |
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throw new CmsException("key invalid in 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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