Pkcs7Recipient.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / ManagedLibraries / Security / System / Security / Cryptography / Pkcs / Pkcs7Recipient.cs / 1305376 / Pkcs7Recipient.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 

// 
// Pkcs7Recipient.cs 
//
 
namespace System.Security.Cryptography.Pkcs {
    using System.Collections;
    using System.Runtime.InteropServices;
    using System.Security.Cryptography.X509Certificates; 

    [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] 
    public sealed class CmsRecipient { 
        private SubjectIdentifierType   m_recipientIdentifierType;
        private X509Certificate2       m_certificate; 

        //
        // Constructors.
        // 

        private CmsRecipient () {} 
 
        public CmsRecipient (X509Certificate2 certificate):this(SubjectIdentifierType.IssuerAndSerialNumber, certificate){}
 
        public CmsRecipient (SubjectIdentifierType recipientIdentifierType, X509Certificate2 certificate) {
            Reset(recipientIdentifierType, certificate);
        }
 
        //
        // Public APIs. 
        // 

        public SubjectIdentifierType RecipientIdentifierType { 
            get {
                return m_recipientIdentifierType;
            }
        } 

        public X509Certificate2 Certificate { 
            get { 
                return m_certificate;
            } 
        }

        //
        // Private methods. 
        //
 
        private void Reset (SubjectIdentifierType recipientIdentifierType, X509Certificate2 certificate) { 
            if (certificate == null)
                throw new ArgumentNullException("certificate"); 

            switch (recipientIdentifierType) {
            case SubjectIdentifierType.Unknown:
                recipientIdentifierType = SubjectIdentifierType.IssuerAndSerialNumber; 
                break;
            case SubjectIdentifierType.IssuerAndSerialNumber: 
                break; 
            case SubjectIdentifierType.SubjectKeyIdentifier:
                if (!PkcsUtils.CmsSupported()) 
                    throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Cms_Not_Supported"));
                break;
            default:
                throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Cms_Invalid_Subject_Identifier_Type"), recipientIdentifierType.ToString()); 
            }
 
            m_recipientIdentifierType = recipientIdentifierType; 
            m_certificate = certificate;
        } 
    }

    [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)]
    public sealed class CmsRecipientCollection : ICollection { 
        private ArrayList m_recipients;
 
        public CmsRecipientCollection () { 
            m_recipients = new ArrayList();
        } 

        public CmsRecipientCollection (CmsRecipient recipient) {
            m_recipients = new ArrayList(1);
            m_recipients.Add(recipient); 
        }
 
        public CmsRecipientCollection (SubjectIdentifierType recipientIdentifierType, X509Certificate2Collection certificates) { 
            m_recipients = new ArrayList(certificates.Count);
            for (int index = 0; index < certificates.Count; index++) { 
                m_recipients.Add(new CmsRecipient(recipientIdentifierType, certificates[index]));
            }
        }
 
        public CmsRecipient this[int index] {
            get { 
                if (index < 0 || index >= m_recipients.Count) 
                    throw new ArgumentOutOfRangeException("index", SecurityResources.GetResourceString("ArgumentOutOfRange_Index"));
 
                return (CmsRecipient) m_recipients[index];
            }
        }
 
        public int Count {
            get { 
                return m_recipients.Count; 
            }
        } 

        public int Add (CmsRecipient recipient) {
            if (recipient == null)
                throw new ArgumentNullException("recipient"); 

            return m_recipients.Add(recipient); 
        } 

        public void Remove(CmsRecipient recipient) { 
            if (recipient == null)
                throw new ArgumentNullException("recipient");

            m_recipients.Remove(recipient); 
        }
 
        public CmsRecipientEnumerator GetEnumerator() { 
            return new CmsRecipientEnumerator(this);
        } 

        /// 
        IEnumerator IEnumerable.GetEnumerator() {
            return new CmsRecipientEnumerator(this); 
        }
 
        public void CopyTo(Array array, int index) { 
            if (array == null)
                throw new ArgumentNullException("array"); 
            if (array.Rank != 1)
                throw new ArgumentException(SecurityResources.GetResourceString("Arg_RankMultiDimNotSupported"));
            if (index < 0 || index >= array.Length)
                throw new ArgumentOutOfRangeException("index", SecurityResources.GetResourceString("ArgumentOutOfRange_Index")); 
            if (index + this.Count > array.Length)
                throw new ArgumentException(SecurityResources.GetResourceString("Argument_InvalidOffLen")); 
 
            for (int i=0; i < this.Count; i++) {
                array.SetValue(this[i], index); 
                index++;
            }
        }
 
        public void CopyTo(CmsRecipient[] array, int index) {
            ((ICollection)this).CopyTo(array, index); 
        } 

        public bool IsSynchronized { 
            get {
                return false;
            }
        } 

        public Object SyncRoot { 
            get { 
                return this;
            } 
        }
    }

    [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] 
    public sealed class CmsRecipientEnumerator : IEnumerator {
        private CmsRecipientCollection m_recipients; 
        private int m_current; 

        private CmsRecipientEnumerator() {} 
        internal CmsRecipientEnumerator(CmsRecipientCollection recipients) {
            m_recipients = recipients;
            m_current = -1;
        } 

        public CmsRecipient Current { 
            get { 
                return (CmsRecipient) m_recipients[m_current];
            } 
        }

        /// 
        Object IEnumerator.Current { 
            get {
                return (Object) m_recipients[m_current]; 
            } 
        }
 
        public bool MoveNext() {
            if (m_current == ((int) m_recipients.Count - 1))
                return false;
            m_current++; 
            return true;
        } 
 
        public void Reset() {
            m_current = -1; 
        }
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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Pkcs7Recipient.cs source code in C# .NET

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