scripts
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niko
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using System;
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using System.Collections;
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using System.Runtime.InteropServices;
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using System.Runtime.Serialization;
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using System.Security.Cryptography;
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using Mono.Security.Cryptography;
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namespace System.Security.Policy
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{
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/// <summary>Determines whether an assembly belongs to a code group by testing its hash value. This class cannot be inherited.</summary>
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// Token: 0x0200058E RID: 1422
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[ComVisible(true)]
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[Serializable]
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public sealed class HashMembershipCondition : ISerializable, IDeserializationCallback, IMembershipCondition, ISecurityEncodable, ISecurityPolicyEncodable
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{
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// Token: 0x0600340E RID: 13326 RVA: 0x000B2FE8 File Offset: 0x000B11E8
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internal HashMembershipCondition()
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{
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}
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/// <summary>Initializes a new instance of the <see cref="T:System.Security.Policy.HashMembershipCondition" /> class with the hash algorithm and hash value that determine membership.</summary>
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/// <param name="hashAlg">The hash algorithm to use to compute the hash value for the assembly. </param>
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/// <param name="value">The hash value for which to test. </param>
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/// <exception cref="T:System.ArgumentNullException">The <paramref name="hashAlg" /> parameter is null.-or- The <paramref name="value" /> parameter is null. </exception>
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/// <exception cref="T:System.ArgumentException">The <paramref name="hashAlg" /> parameter is not a valid hash algorithm. </exception>
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// Token: 0x0600340F RID: 13327 RVA: 0x000B2FF8 File Offset: 0x000B11F8
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public HashMembershipCondition(HashAlgorithm hashAlg, byte[] value)
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{
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if (hashAlg == null)
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{
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throw new ArgumentNullException("hashAlg");
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}
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if (value == null)
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{
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throw new ArgumentNullException("value");
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}
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this.hash_algorithm = hashAlg;
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this.hash_value = (byte[])value.Clone();
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}
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/// <summary>Runs when the entire object graph has been deserialized.</summary>
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/// <param name="sender">The object that initiated the callback. The functionality for this parameter is not currently implemented.</param>
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// Token: 0x06003410 RID: 13328 RVA: 0x000B304C File Offset: 0x000B124C
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[MonoTODO("fx 2.0")]
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void IDeserializationCallback.OnDeserialization(object sender)
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{
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}
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/// <summary>Populates a <see cref="T:System.Runtime.Serialization.SerializationInfo" /> with the data needed to serialize the target object.</summary>
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/// <param name="info">The <see cref="T:System.Runtime.Serialization.SerializationInfo" /> to populate with data. </param>
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/// <param name="context">The destination <see cref="T:System.Runtime.Serialization.StreamingContext" /> for this serialization. </param>
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// Token: 0x06003411 RID: 13329 RVA: 0x000B3050 File Offset: 0x000B1250
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[MonoTODO("fx 2.0")]
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void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context)
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{
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}
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/// <summary>Gets or sets the hash algorithm to use for the membership condition.</summary>
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/// <returns>The hash algorithm to use for the membership condition.</returns>
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/// <exception cref="T:System.ArgumentNullException">An attempt is made to set <see cref="P:System.Security.Policy.HashMembershipCondition.HashAlgorithm" /> to null. </exception>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode" />
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/// </PermissionSet>
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// Token: 0x17000A40 RID: 2624
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// (get) Token: 0x06003412 RID: 13330 RVA: 0x000B3054 File Offset: 0x000B1254
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// (set) Token: 0x06003413 RID: 13331 RVA: 0x000B3074 File Offset: 0x000B1274
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public HashAlgorithm HashAlgorithm
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{
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get
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{
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if (this.hash_algorithm == null)
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{
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this.hash_algorithm = new SHA1Managed();
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}
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return this.hash_algorithm;
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}
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set
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{
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if (value == null)
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{
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throw new ArgumentNullException("HashAlgorithm");
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}
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this.hash_algorithm = value;
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}
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}
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/// <summary>Gets or sets the hash value for which the membership condition tests.</summary>
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/// <returns>The hash value for which the membership condition tests.</returns>
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/// <exception cref="T:System.ArgumentNullException">An attempt is made to set <see cref="P:System.Security.Policy.HashMembershipCondition.HashValue" /> to null. </exception>
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// Token: 0x17000A41 RID: 2625
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// (get) Token: 0x06003414 RID: 13332 RVA: 0x000B3090 File Offset: 0x000B1290
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// (set) Token: 0x06003415 RID: 13333 RVA: 0x000B30C0 File Offset: 0x000B12C0
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public byte[] HashValue
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{
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get
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{
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if (this.hash_value == null)
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{
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throw new ArgumentException(Locale.GetText("No HashValue available."));
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}
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return (byte[])this.hash_value.Clone();
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}
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set
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{
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if (value == null)
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{
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throw new ArgumentNullException("HashValue");
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}
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this.hash_value = (byte[])value.Clone();
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}
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}
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/// <summary>Determines whether the specified evidence satisfies the membership condition.</summary>
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/// <returns>true if the specified evidence satisfies the membership condition; otherwise, false.</returns>
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/// <param name="evidence">The evidence set against which to make the test. </param>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode" />
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/// <IPermission class="System.Security.Permissions.KeyContainerPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
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/// </PermissionSet>
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// Token: 0x06003416 RID: 13334 RVA: 0x000B30F0 File Offset: 0x000B12F0
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public bool Check(Evidence evidence)
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{
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if (evidence == null)
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{
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return false;
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}
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IEnumerator hostEnumerator = evidence.GetHostEnumerator();
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while (hostEnumerator.MoveNext())
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{
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object obj = hostEnumerator.Current;
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Hash hash = obj as Hash;
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if (hash != null)
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{
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if (this.Compare(this.hash_value, hash.GenerateHash(this.hash_algorithm)))
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{
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return true;
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}
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break;
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}
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}
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return false;
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}
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/// <summary>Creates an equivalent copy of the membership condition.</summary>
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/// <returns>A new, identical copy of the current membership condition.</returns>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode" />
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/// </PermissionSet>
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// Token: 0x06003417 RID: 13335 RVA: 0x000B3158 File Offset: 0x000B1358
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public IMembershipCondition Copy()
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{
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return new HashMembershipCondition(this.hash_algorithm, this.hash_value);
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}
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/// <summary>Determines whether the <see cref="P:System.Security.Policy.HashMembershipCondition.HashValue" /> and the <see cref="P:System.Security.Policy.HashMembershipCondition.HashAlgorithm" /> from the specified object are equivalent to the <see cref="P:System.Security.Policy.HashMembershipCondition.HashValue" /> and <see cref="P:System.Security.Policy.HashMembershipCondition.HashAlgorithm" /> contained in the current <see cref="T:System.Security.Policy.HashMembershipCondition" />.</summary>
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/// <returns>true if the <see cref="P:System.Security.Policy.HashMembershipCondition.HashValue" /> and <see cref="P:System.Security.Policy.HashMembershipCondition.HashAlgorithm" /> from the specified object is equivalent to the <see cref="P:System.Security.Policy.HashMembershipCondition.HashValue" /> and <see cref="P:System.Security.Policy.HashMembershipCondition.HashAlgorithm" /> contained in the current <see cref="T:System.Security.Policy.HashMembershipCondition" />; otherwise, false.</returns>
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/// <param name="o">The object to compare to the current <see cref="T:System.Security.Policy.HashMembershipCondition" />. </param>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode" />
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/// </PermissionSet>
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// Token: 0x06003418 RID: 13336 RVA: 0x000B316C File Offset: 0x000B136C
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public override bool Equals(object o)
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{
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HashMembershipCondition hashMembershipCondition = o as HashMembershipCondition;
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return hashMembershipCondition != null && hashMembershipCondition.HashAlgorithm == this.hash_algorithm && this.Compare(this.hash_value, hashMembershipCondition.hash_value);
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}
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/// <summary>Creates an XML encoding of the security object and its current state.</summary>
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/// <returns>An XML encoding of the security object, including any state information.</returns>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode" />
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/// </PermissionSet>
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// Token: 0x06003419 RID: 13337 RVA: 0x000B31B0 File Offset: 0x000B13B0
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public SecurityElement ToXml()
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{
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return this.ToXml(null);
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}
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/// <summary>Creates an XML encoding of the security object and its current state with the specified <see cref="T:System.Security.Policy.PolicyLevel" />.</summary>
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/// <returns>An XML encoding of the security object, including any state information.</returns>
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/// <param name="level">The policy level context for resolving named permission set references. </param>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode" />
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/// </PermissionSet>
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// Token: 0x0600341A RID: 13338 RVA: 0x000B31BC File Offset: 0x000B13BC
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public SecurityElement ToXml(PolicyLevel level)
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{
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SecurityElement securityElement = MembershipConditionHelper.Element(typeof(HashMembershipCondition), this.version);
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securityElement.AddAttribute("HashValue", CryptoConvert.ToHex(this.HashValue));
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securityElement.AddAttribute("HashAlgorithm", this.hash_algorithm.GetType().FullName);
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return securityElement;
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}
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/// <summary>Reconstructs a security object with a specified state from an XML encoding.</summary>
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/// <param name="e">The XML encoding to use to reconstruct the security object. </param>
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// Token: 0x0600341B RID: 13339 RVA: 0x000B3214 File Offset: 0x000B1414
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public void FromXml(SecurityElement e)
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{
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this.FromXml(e, null);
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}
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/// <summary>Reconstructs a security object with a specified state from an XML encoding.</summary>
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/// <param name="e">The XML encoding to use to reconstruct the security object. </param>
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/// <param name="level">The policy level context, used to resolve named permission set references. </param>
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/// <exception cref="T:System.ArgumentNullException">The <paramref name="e" /> parameter is null. </exception>
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/// <exception cref="T:System.ArgumentException">The <paramref name="e" /> parameter is not a valid membership condition element. </exception>
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// Token: 0x0600341C RID: 13340 RVA: 0x000B3220 File Offset: 0x000B1420
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public void FromXml(SecurityElement e, PolicyLevel level)
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{
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MembershipConditionHelper.CheckSecurityElement(e, "e", this.version, this.version);
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this.hash_value = CryptoConvert.FromHex(e.Attribute("HashValue"));
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string text = e.Attribute("HashAlgorithm");
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this.hash_algorithm = ((text != null) ? HashAlgorithm.Create(text) : null);
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}
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/// <summary>Gets the hash code for the current membership condition.</summary>
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/// <returns>The hash code for the current membership condition.</returns>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode" />
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/// </PermissionSet>
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// Token: 0x0600341D RID: 13341 RVA: 0x000B3280 File Offset: 0x000B1480
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public override int GetHashCode()
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{
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int num = this.hash_algorithm.GetType().GetHashCode();
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if (this.hash_value != null)
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{
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foreach (byte b in this.hash_value)
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{
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num ^= (int)b;
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}
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}
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return num;
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}
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/// <summary>Creates and returns a string representation of the membership condition.</summary>
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/// <returns>A string representation of the state of the membership condition.</returns>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode" />
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/// </PermissionSet>
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// Token: 0x0600341E RID: 13342 RVA: 0x000B32D0 File Offset: 0x000B14D0
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public override string ToString()
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{
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Type type = this.HashAlgorithm.GetType();
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return string.Format("Hash - {0} {1} = {2}", type.FullName, type.Assembly, CryptoConvert.ToHex(this.HashValue));
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}
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// Token: 0x0600341F RID: 13343 RVA: 0x000B330C File Offset: 0x000B150C
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private bool Compare(byte[] expected, byte[] actual)
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{
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if (expected.Length != actual.Length)
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{
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return false;
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}
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int num = expected.Length;
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for (int i = 0; i < num; i++)
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{
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if (expected[i] != actual[i])
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{
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return false;
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}
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}
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return true;
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}
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// Token: 0x04001555 RID: 5461
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private readonly int version = 1;
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// Token: 0x04001556 RID: 5462
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private HashAlgorithm hash_algorithm;
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// Token: 0x04001557 RID: 5463
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private byte[] hash_value;
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}
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}
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