2003-12-07  Sebastien Pouliot  <spouliot@videotron.ca>

	* ContentInfo.cs: Modified default Oid not to include description. 
	Added basic support for static GetContentType.
	* EnvelopedPkcs7.cs: New. Partial implementation of PKCS#7 envelopes
	(encrypted data).
	* KeyAgreeRecipientInfo.cs: New. Stub for key agreement informations.
	Note that key agreement algorithms (DH) are absent from the framework.
	* KeyTransRecipientInfo.cs: New. Implementation for key transport
	informations. 
	* Pkcs7Recipient.cs: New. Implementation of "recipients" - how it 
	links to a X.509 certificate (issuer and serial key or subject key 
	info).
	* Pkcs7RecipientCollection.cs: New. Collection of Pkcs7Recipient.
	* Pkcs7RecipientEnumerator.cs: New. Enumerator for Pkcs7Recipient.
	* Pkcs7AttributeCollection.cs: New. Collection of Pkcs9Attributes.
	* Pkcs7AttributeEnumerator.cs: New. Enumerator for Pkcs9Attributes.
	* PublicKeyInfo.cs: New. Handle public key informations.
	* RecipientInfoCollection.cs: New. Collection of RecipientInfo (and
	inherited classes).
	* RecipientInfoEnumerator.cs: New. Enumerator for RecipientInfo (and
	inherited classes).
	* SignedPkcs7.cs: New. Partial implementation of PKCS#7 signed
	structures.
	* SignerInfo.cs: New. Information (certificate and attributes) about 
	the signer. Actual signature/verification stuff is missing.
	* SignerInfoCollection.cs: New. Collection of SignerInfo.
	* SignerInfoEnumarator.cs: New. Enumerator for SignerInfo.
	* SubjectIdentifier.cs: New. Contains the type of identifier linking
	to a subject.
	* SubjectIdentifierOrKey.cs: New. Contains the subject's public key or
	an information linking to a subject public key.

2003-11-08  Sebastien Pouliot  <spouliot@videotron.ca>

	* ContentInfo.cs: New. Class to encapsulate PKCS7 ContentInfo. Static 
	method GetContentType need to be completed (requires some test vectors).
	* Pkcs7Signer.cs: New. Class to add attributes (authenticated and/or 
	authenticated),	certificates and other informations to the signature.
	* RecipientInfo.cs: New. Abstract class to encpasulate recipient 
	informations.

2003-11-07  Sebastien Pouliot  <spouliot@videotron.ca>

	* AlgorithmIdentifier.cs: New. Class to encapsulate PKCS7 AlgorithmIdentifier.
	* CryptographicAttribute.cs: Basic class for attributes.
	* KeyAgreeKeyChoice.cs: New. Enumeration for key agreement.
	* Pkcs9Attribute.cs: New. Base class for Pkcs#9 attributes.
	* Pkcs9DocumentDescription.cs: New. Pkcs#9 DocumentDescription attribute.
	* Pkcs9DocumentName.cs: New. Pkcs#9 DocumentName attribute.
	* Pkcs9SigningTime.cs: New. Pkcs#9 SigningTime attribute.
	* RecipientInfoType.cs: New. Enumeration for RecipientInfo.
	* RecipientSubType.cs: New. Enumeration for RecipientInfo.
	* SubjectIdentifierOrKeyType.cs: New. Enumeration for SubjectIdentifier.
	* SubjectIdentifierType.cs: New. Enumeration for SubjectIdentifier.
