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342 lines
14 KiB
342 lines
14 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.Collections; |
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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.Kisa; |
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.Nist; |
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.Ntt; |
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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.Asn1.X9; |
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto; |
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Operators; |
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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.Utilities; |
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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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/** |
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* General class for generating a CMS enveloped-data message. |
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* |
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* A simple example of usage. |
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* |
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* <pre> |
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* CMSEnvelopedDataGenerator fact = new CMSEnvelopedDataGenerator(); |
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* |
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* fact.addKeyTransRecipient(cert); |
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* |
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* CMSEnvelopedData data = fact.generate(content, algorithm, "BC"); |
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* </pre> |
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*/ |
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public class CmsEnvelopedGenerator |
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{ |
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// Note: These tables are complementary: If rc2Table[i]==j, then rc2Ekb[j]==i |
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internal static readonly short[] rc2Table = |
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{ |
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0xbd, 0x56, 0xea, 0xf2, 0xa2, 0xf1, 0xac, 0x2a, 0xb0, 0x93, 0xd1, 0x9c, 0x1b, 0x33, 0xfd, 0xd0, |
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0x30, 0x04, 0xb6, 0xdc, 0x7d, 0xdf, 0x32, 0x4b, 0xf7, 0xcb, 0x45, 0x9b, 0x31, 0xbb, 0x21, 0x5a, |
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0x41, 0x9f, 0xe1, 0xd9, 0x4a, 0x4d, 0x9e, 0xda, 0xa0, 0x68, 0x2c, 0xc3, 0x27, 0x5f, 0x80, 0x36, |
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0x3e, 0xee, 0xfb, 0x95, 0x1a, 0xfe, 0xce, 0xa8, 0x34, 0xa9, 0x13, 0xf0, 0xa6, 0x3f, 0xd8, 0x0c, |
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0x78, 0x24, 0xaf, 0x23, 0x52, 0xc1, 0x67, 0x17, 0xf5, 0x66, 0x90, 0xe7, 0xe8, 0x07, 0xb8, 0x60, |
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0x48, 0xe6, 0x1e, 0x53, 0xf3, 0x92, 0xa4, 0x72, 0x8c, 0x08, 0x15, 0x6e, 0x86, 0x00, 0x84, 0xfa, |
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0xf4, 0x7f, 0x8a, 0x42, 0x19, 0xf6, 0xdb, 0xcd, 0x14, 0x8d, 0x50, 0x12, 0xba, 0x3c, 0x06, 0x4e, |
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0xec, 0xb3, 0x35, 0x11, 0xa1, 0x88, 0x8e, 0x2b, 0x94, 0x99, 0xb7, 0x71, 0x74, 0xd3, 0xe4, 0xbf, |
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0x3a, 0xde, 0x96, 0x0e, 0xbc, 0x0a, 0xed, 0x77, 0xfc, 0x37, 0x6b, 0x03, 0x79, 0x89, 0x62, 0xc6, |
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0xd7, 0xc0, 0xd2, 0x7c, 0x6a, 0x8b, 0x22, 0xa3, 0x5b, 0x05, 0x5d, 0x02, 0x75, 0xd5, 0x61, 0xe3, |
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0x18, 0x8f, 0x55, 0x51, 0xad, 0x1f, 0x0b, 0x5e, 0x85, 0xe5, 0xc2, 0x57, 0x63, 0xca, 0x3d, 0x6c, |
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0xb4, 0xc5, 0xcc, 0x70, 0xb2, 0x91, 0x59, 0x0d, 0x47, 0x20, 0xc8, 0x4f, 0x58, 0xe0, 0x01, 0xe2, |
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0x16, 0x38, 0xc4, 0x6f, 0x3b, 0x0f, 0x65, 0x46, 0xbe, 0x7e, 0x2d, 0x7b, 0x82, 0xf9, 0x40, 0xb5, |
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0x1d, 0x73, 0xf8, 0xeb, 0x26, 0xc7, 0x87, 0x97, 0x25, 0x54, 0xb1, 0x28, 0xaa, 0x98, 0x9d, 0xa5, |
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0x64, 0x6d, 0x7a, 0xd4, 0x10, 0x81, 0x44, 0xef, 0x49, 0xd6, 0xae, 0x2e, 0xdd, 0x76, 0x5c, 0x2f, |
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0xa7, 0x1c, 0xc9, 0x09, 0x69, 0x9a, 0x83, 0xcf, 0x29, 0x39, 0xb9, 0xe9, 0x4c, 0xff, 0x43, 0xab |
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}; |
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// internal static readonly short[] rc2Ekb = |
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// { |
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// 0x5d, 0xbe, 0x9b, 0x8b, 0x11, 0x99, 0x6e, 0x4d, 0x59, 0xf3, 0x85, 0xa6, 0x3f, 0xb7, 0x83, 0xc5, |
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// 0xe4, 0x73, 0x6b, 0x3a, 0x68, 0x5a, 0xc0, 0x47, 0xa0, 0x64, 0x34, 0x0c, 0xf1, 0xd0, 0x52, 0xa5, |
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// 0xb9, 0x1e, 0x96, 0x43, 0x41, 0xd8, 0xd4, 0x2c, 0xdb, 0xf8, 0x07, 0x77, 0x2a, 0xca, 0xeb, 0xef, |
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// 0x10, 0x1c, 0x16, 0x0d, 0x38, 0x72, 0x2f, 0x89, 0xc1, 0xf9, 0x80, 0xc4, 0x6d, 0xae, 0x30, 0x3d, |
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// 0xce, 0x20, 0x63, 0xfe, 0xe6, 0x1a, 0xc7, 0xb8, 0x50, 0xe8, 0x24, 0x17, 0xfc, 0x25, 0x6f, 0xbb, |
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// 0x6a, 0xa3, 0x44, 0x53, 0xd9, 0xa2, 0x01, 0xab, 0xbc, 0xb6, 0x1f, 0x98, 0xee, 0x9a, 0xa7, 0x2d, |
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// 0x4f, 0x9e, 0x8e, 0xac, 0xe0, 0xc6, 0x49, 0x46, 0x29, 0xf4, 0x94, 0x8a, 0xaf, 0xe1, 0x5b, 0xc3, |
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// 0xb3, 0x7b, 0x57, 0xd1, 0x7c, 0x9c, 0xed, 0x87, 0x40, 0x8c, 0xe2, 0xcb, 0x93, 0x14, 0xc9, 0x61, |
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// 0x2e, 0xe5, 0xcc, 0xf6, 0x5e, 0xa8, 0x5c, 0xd6, 0x75, 0x8d, 0x62, 0x95, 0x58, 0x69, 0x76, 0xa1, |
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// 0x4a, 0xb5, 0x55, 0x09, 0x78, 0x33, 0x82, 0xd7, 0xdd, 0x79, 0xf5, 0x1b, 0x0b, 0xde, 0x26, 0x21, |
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// 0x28, 0x74, 0x04, 0x97, 0x56, 0xdf, 0x3c, 0xf0, 0x37, 0x39, 0xdc, 0xff, 0x06, 0xa4, 0xea, 0x42, |
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// 0x08, 0xda, 0xb4, 0x71, 0xb0, 0xcf, 0x12, 0x7a, 0x4e, 0xfa, 0x6c, 0x1d, 0x84, 0x00, 0xc8, 0x7f, |
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// 0x91, 0x45, 0xaa, 0x2b, 0xc2, 0xb1, 0x8f, 0xd5, 0xba, 0xf2, 0xad, 0x19, 0xb2, 0x67, 0x36, 0xf7, |
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// 0x0f, 0x0a, 0x92, 0x7d, 0xe3, 0x9d, 0xe9, 0x90, 0x3e, 0x23, 0x27, 0x66, 0x13, 0xec, 0x81, 0x15, |
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// 0xbd, 0x22, 0xbf, 0x9f, 0x7e, 0xa9, 0x51, 0x4b, 0x4c, 0xfb, 0x02, 0xd3, 0x70, 0x86, 0x31, 0xe7, |
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// 0x3b, 0x05, 0x03, 0x54, 0x60, 0x48, 0x65, 0x18, 0xd2, 0xcd, 0x5f, 0x32, 0x88, 0x0e, 0x35, 0xfd |
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// }; |
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// TODO Create named constants for all of these |
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public static readonly string DesEde3Cbc = PkcsObjectIdentifiers.DesEde3Cbc.Id; |
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public static readonly string RC2Cbc = PkcsObjectIdentifiers.RC2Cbc.Id; |
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public const string IdeaCbc = "1.3.6.1.4.1.188.7.1.1.2"; |
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public const string Cast5Cbc = "1.2.840.113533.7.66.10"; |
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public static readonly string Aes128Cbc = NistObjectIdentifiers.IdAes128Cbc.Id; |
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public static readonly string Aes192Cbc = NistObjectIdentifiers.IdAes192Cbc.Id; |
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public static readonly string Aes256Cbc = NistObjectIdentifiers.IdAes256Cbc.Id; |
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public static readonly string Camellia128Cbc = NttObjectIdentifiers.IdCamellia128Cbc.Id; |
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public static readonly string Camellia192Cbc = NttObjectIdentifiers.IdCamellia192Cbc.Id; |
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public static readonly string Camellia256Cbc = NttObjectIdentifiers.IdCamellia256Cbc.Id; |
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public static readonly string SeedCbc = KisaObjectIdentifiers.IdSeedCbc.Id; |
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public static readonly string DesEde3Wrap = PkcsObjectIdentifiers.IdAlgCms3DesWrap.Id; |
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public static readonly string Aes128Wrap = NistObjectIdentifiers.IdAes128Wrap.Id; |
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public static readonly string Aes192Wrap = NistObjectIdentifiers.IdAes192Wrap.Id; |
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public static readonly string Aes256Wrap = NistObjectIdentifiers.IdAes256Wrap.Id; |
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public static readonly string Camellia128Wrap = NttObjectIdentifiers.IdCamellia128Wrap.Id; |
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public static readonly string Camellia192Wrap = NttObjectIdentifiers.IdCamellia192Wrap.Id; |
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public static readonly string Camellia256Wrap = NttObjectIdentifiers.IdCamellia256Wrap.Id; |
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public static readonly string SeedWrap = KisaObjectIdentifiers.IdNpkiAppCmsSeedWrap.Id; |
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public static readonly string ECDHSha1Kdf = X9ObjectIdentifiers.DHSinglePassStdDHSha1KdfScheme.Id; |
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public static readonly string ECMqvSha1Kdf = X9ObjectIdentifiers.MqvSinglePassSha1KdfScheme.Id; |
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internal readonly IList recipientInfoGenerators = BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Platform.CreateArrayList(); |
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internal readonly SecureRandom rand; |
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internal CmsAttributeTableGenerator unprotectedAttributeGenerator = null; |
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public CmsEnvelopedGenerator() |
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: this(new SecureRandom()) |
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{ |
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} |
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/// <summary>Constructor allowing specific source of randomness</summary> |
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/// <param name="rand">Instance of <c>SecureRandom</c> to use.</param> |
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public CmsEnvelopedGenerator( |
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SecureRandom rand) |
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{ |
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this.rand = rand; |
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} |
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public CmsAttributeTableGenerator UnprotectedAttributeGenerator |
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{ |
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get { return this.unprotectedAttributeGenerator; } |
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set { this.unprotectedAttributeGenerator = value; } |
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} |
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/** |
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* add a recipient. |
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* |
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* @param cert recipient's public key certificate |
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* @exception ArgumentException if there is a problem with the certificate |
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*/ |
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public void AddKeyTransRecipient( |
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X509Certificate cert) |
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{ |
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TbsCertificateStructure recipientTbsCert = CmsUtilities.GetTbsCertificateStructure(cert); |
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SubjectPublicKeyInfo info = recipientTbsCert.SubjectPublicKeyInfo; |
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this.AddRecipientInfoGenerator(new KeyTransRecipientInfoGenerator(cert, new Asn1KeyWrapper(info.AlgorithmID.Algorithm, info.AlgorithmID.Parameters, cert))); |
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} |
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/** |
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* add a recipient |
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* |
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* @param key the public key used by the recipient |
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* @param subKeyId the identifier for the recipient's public key |
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* @exception ArgumentException if there is a problem with the key |
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*/ |
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public void AddKeyTransRecipient( |
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AsymmetricKeyParameter pubKey, |
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byte[] subKeyId) |
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{ |
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SubjectPublicKeyInfo info = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(pubKey); |
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this.AddRecipientInfoGenerator(new KeyTransRecipientInfoGenerator(subKeyId, new Asn1KeyWrapper(info.AlgorithmID.Algorithm, info.AlgorithmID.Parameters, pubKey))); |
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} |
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/** |
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* add a KEK recipient. |
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* @param key the secret key to use for wrapping |
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* @param keyIdentifier the byte string that identifies the key |
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*/ |
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public void AddKekRecipient( |
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string keyAlgorithm, // TODO Remove need for this parameter |
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KeyParameter key, |
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byte[] keyIdentifier) |
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{ |
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AddKekRecipient(keyAlgorithm, key, new KekIdentifier(keyIdentifier, null, null)); |
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} |
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/** |
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* add a KEK recipient. |
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* @param key the secret key to use for wrapping |
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* @param keyIdentifier the byte string that identifies the key |
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*/ |
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public void AddKekRecipient( |
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string keyAlgorithm, // TODO Remove need for this parameter |
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KeyParameter key, |
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KekIdentifier kekIdentifier) |
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{ |
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KekRecipientInfoGenerator kekrig = new KekRecipientInfoGenerator(); |
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kekrig.KekIdentifier = kekIdentifier; |
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kekrig.KeyEncryptionKeyOID = keyAlgorithm; |
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kekrig.KeyEncryptionKey = key; |
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recipientInfoGenerators.Add(kekrig); |
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} |
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public void AddPasswordRecipient( |
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CmsPbeKey pbeKey, |
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string kekAlgorithmOid) |
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{ |
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Pbkdf2Params p = new Pbkdf2Params(pbeKey.Salt, pbeKey.IterationCount); |
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PasswordRecipientInfoGenerator prig = new PasswordRecipientInfoGenerator(); |
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prig.KeyDerivationAlgorithm = new AlgorithmIdentifier(PkcsObjectIdentifiers.IdPbkdf2, p); |
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prig.KeyEncryptionKeyOID = kekAlgorithmOid; |
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prig.KeyEncryptionKey = pbeKey.GetEncoded(kekAlgorithmOid); |
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recipientInfoGenerators.Add(prig); |
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} |
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/** |
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* Add a key agreement based recipient. |
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* |
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* @param agreementAlgorithm key agreement algorithm to use. |
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* @param senderPrivateKey private key to initialise sender side of agreement with. |
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* @param senderPublicKey sender public key to include with message. |
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* @param recipientCert recipient's public key certificate. |
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* @param cekWrapAlgorithm OID for key wrapping algorithm to use. |
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* @exception SecurityUtilityException if the algorithm requested cannot be found |
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* @exception InvalidKeyException if the keys are inappropriate for the algorithm specified |
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*/ |
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public void AddKeyAgreementRecipient( |
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string agreementAlgorithm, |
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AsymmetricKeyParameter senderPrivateKey, |
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AsymmetricKeyParameter senderPublicKey, |
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X509Certificate recipientCert, |
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string cekWrapAlgorithm) |
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{ |
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IList recipientCerts = BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Platform.CreateArrayList(1); |
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recipientCerts.Add(recipientCert); |
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AddKeyAgreementRecipients(agreementAlgorithm, senderPrivateKey, senderPublicKey, |
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recipientCerts, cekWrapAlgorithm); |
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} |
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/** |
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* Add multiple key agreement based recipients (sharing a single KeyAgreeRecipientInfo structure). |
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* |
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* @param agreementAlgorithm key agreement algorithm to use. |
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* @param senderPrivateKey private key to initialise sender side of agreement with. |
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* @param senderPublicKey sender public key to include with message. |
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* @param recipientCerts recipients' public key certificates. |
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* @param cekWrapAlgorithm OID for key wrapping algorithm to use. |
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* @exception SecurityUtilityException if the algorithm requested cannot be found |
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* @exception InvalidKeyException if the keys are inappropriate for the algorithm specified |
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*/ |
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public void AddKeyAgreementRecipients( |
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string agreementAlgorithm, |
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AsymmetricKeyParameter senderPrivateKey, |
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AsymmetricKeyParameter senderPublicKey, |
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ICollection recipientCerts, |
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string cekWrapAlgorithm) |
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{ |
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if (!senderPrivateKey.IsPrivate) |
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throw new ArgumentException("Expected private key", "senderPrivateKey"); |
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if (senderPublicKey.IsPrivate) |
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throw new ArgumentException("Expected public key", "senderPublicKey"); |
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/* TODO |
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* "a recipient X.509 version 3 certificate that contains a key usage extension MUST |
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* assert the keyAgreement bit." |
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*/ |
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KeyAgreeRecipientInfoGenerator karig = new KeyAgreeRecipientInfoGenerator(); |
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karig.KeyAgreementOID = new DerObjectIdentifier(agreementAlgorithm); |
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karig.KeyEncryptionOID = new DerObjectIdentifier(cekWrapAlgorithm); |
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karig.RecipientCerts = recipientCerts; |
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karig.SenderKeyPair = new AsymmetricCipherKeyPair(senderPublicKey, senderPrivateKey); |
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recipientInfoGenerators.Add(karig); |
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} |
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/// <summary> |
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/// Add a generator to produce the recipient info required. |
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/// </summary> |
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/// <param name="recipientInfoGenerator">a generator of a recipient info object.</param> |
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public void AddRecipientInfoGenerator(RecipientInfoGenerator recipientInfoGenerator) |
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{ |
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recipientInfoGenerators.Add(recipientInfoGenerator); |
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} |
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protected internal virtual AlgorithmIdentifier GetAlgorithmIdentifier( |
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string encryptionOid, |
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KeyParameter encKey, |
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Asn1Encodable asn1Params, |
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out ICipherParameters cipherParameters) |
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{ |
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Asn1Object asn1Object; |
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if (asn1Params != null) |
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{ |
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asn1Object = asn1Params.ToAsn1Object(); |
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cipherParameters = ParameterUtilities.GetCipherParameters( |
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encryptionOid, encKey, asn1Object); |
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} |
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else |
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{ |
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asn1Object = DerNull.Instance; |
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cipherParameters = encKey; |
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} |
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return new AlgorithmIdentifier( |
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new DerObjectIdentifier(encryptionOid), |
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asn1Object); |
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} |
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protected internal virtual Asn1Encodable GenerateAsn1Parameters( |
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string encryptionOid, |
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byte[] encKeyBytes) |
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{ |
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Asn1Encodable asn1Params = null; |
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try |
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{ |
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if (encryptionOid.Equals(RC2Cbc)) |
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{ |
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byte[] iv = new byte[8]; |
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rand.NextBytes(iv); |
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// TODO Is this detailed repeat of Java version really necessary? |
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int effKeyBits = encKeyBytes.Length * 8; |
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int parameterVersion; |
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if (effKeyBits < 256) |
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{ |
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parameterVersion = rc2Table[effKeyBits]; |
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} |
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else |
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{ |
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parameterVersion = effKeyBits; |
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} |
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asn1Params = new RC2CbcParameter(parameterVersion, iv); |
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} |
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else |
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{ |
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asn1Params = ParameterUtilities.GenerateParameters(encryptionOid, rand); |
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} |
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} |
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catch (SecurityUtilityException) |
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{ |
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// No problem... no parameters generated |
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} |
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return asn1Params; |
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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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