The System.Security.Cryptography.Pkcs.AlgorithmIdentifier class defines the algorithm used for a cryptographic operation.

The System.Security.Cryptography.Pkcs.CmsRecipient class defines the recipient of a CMS/PKCS #7 message.

The System.Security.Cryptography.Pkcs.CmsRecipientCollection class represents a set of System.Security.Cryptography.Pkcs.CmsRecipient objects. System.Security.Cryptography.Pkcs.CmsRecipientCollection implements the ICollection interface.

The System.Security.Cryptography.Pkcs.CmsRecipientEnumerator class provides enumeration functionality for the System.Security.Cryptography.Pkcs.CmsRecipientCollection collection. System.Security.Cryptography.Pkcs.CmsRecipientEnumerator implements the IEnumerator interface.

The System.Security.Cryptography.Pkcs.CmsSigner class provides signing functionality.

The System.Security.Cryptography.Pkcs.ContentInfo class represents the CMS/PKCS #7 ContentInfo data structure as defined in the CMS/PKCS #7 standards document. This data structure is the basis for all CMS/PKCS #7 messages.

The System.Security.Cryptography.Pkcs.EnvelopedCms class represents a CMS/PKCS #7 structure for enveloped data.

The System.Security.Cryptography.Pkcs.KeyAgreeKeyChoice enumeration defines the type of key used in a key agreement protocol.

The System.Security.Cryptography.Pkcs.KeyAgreeRecipientInfo class defines key agreement recipient information. Key agreement algorithms typically use the Diffie-Hellman key agreement algorithm, in which the two parties that establish a shared cryptographic key both take part in its generation and, by definition, agree on that key. This is in contrast to key transport algorithms, in which one party generates the key unilaterally and sends, or transports it, to the other party.

The System.Security.Cryptography.Pkcs.KeyTransRecipientInfo class defines key transport recipient information. Key transport algorithms typically use the RSA algorithm, in which an originator establishes a shared cryptographic key with a recipient by generating that key and then transporting it to the recipient. This is in contrast to key agreement algorithms, in which the two parties that will be using a cryptographic key both take part in its generation, thereby mutually agreeing to that key.

Represents an attribute used for CMS/PKCS #7 and PKCS #9 operations.

The System.Security.Cryptography.Pkcs.Pkcs9ContentType class defines the type of the content of a CMS/PKCS #7 message.

The System.Security.Cryptography.Pkcs.Pkcs9DocumentDescription class defines the description of the content of a CMS/PKCS #7 message.

The System.Security.Cryptography.Pkcs.Pkcs9DocumentName class defines the name of a CMS/PKCS #7 message.

The System.Security.Cryptography.Pkcs.Pkcs9MessageDigest class defines the message digest of a CMS/PKCS #7 message.

The System.Security.Cryptography.Pkcs.Pkcs9SigningTime class defines the signing date and time of a signature. A System.Security.Cryptography.Pkcs.Pkcs9SigningTime object can be used as an authenticated attribute of a System.Security.Cryptography.Pkcs.CmsSigner object when an authenticated date and time are to accompany a digital signature.

The System.Security.Cryptography.Pkcs.PublicKeyInfo class represents information associated with a public key.

The System.Security.Cryptography.Pkcs.RecipientInfo class represents information about a CMS/PKCS #7 message recipient. The System.Security.Cryptography.Pkcs.RecipientInfo class is an abstract class inherited by the System.Security.Cryptography.Pkcs.KeyAgreeRecipientInfo and System.Security.Cryptography.Pkcs.KeyTransRecipientInfo classes.

The System.Security.Cryptography.Pkcs.RecipientInfoCollection class represents a collection of System.Security.Cryptography.Pkcs.RecipientInfo objects. System.Security.Cryptography.Pkcs.RecipientInfoCollection implements the ICollection interface.

The System.Security.Cryptography.Pkcs.RecipientInfoEnumerator class provides enumeration functionality for the System.Security.Cryptography.Pkcs.RecipientInfoCollection collection. System.Security.Cryptography.Pkcs.RecipientInfoEnumerator implements the IEnumerator interface.

The System.Security.Cryptography.Pkcs.RecipientInfoType enumeration defines the types of recipient information.

The System.Security.Cryptography.Pkcs.SignedCms class enables signing and verifying of CMS/PKCS #7 messages.

The System.Security.Cryptography.Pkcs.SignerInfo class represents a signer associated with a System.Security.Cryptography.Pkcs.SignedCms object that represents a CMS/PKCS #7 message.

The System.Security.Cryptography.Pkcs.SignerInfoCollection class represents a collection of System.Security.Cryptography.Pkcs.SignerInfo objects. System.Security.Cryptography.Pkcs.SignerInfoCollection implements the ICollection interface.

The System.Security.Cryptography.Pkcs.SignerInfoEnumerator class provides enumeration functionality for the System.Security.Cryptography.Pkcs.SignerInfoCollection collection. System.Security.Cryptography.Pkcs.SignerInfoEnumerator implements the IEnumerator interface.

The System.Security.Cryptography.Pkcs.SubjectIdentifier class defines the type of the identifier of a subject, such as a System.Security.Cryptography.Pkcs.CmsSigner or a System.Security.Cryptography.Pkcs.CmsRecipient. The subject can be identified by the certificate issuer and serial number or the subject key.

The System.Security.Cryptography.Pkcs.SubjectIdentifierOrKey class defines the type of the identifier of a subject, such as a System.Security.Cryptography.Pkcs.CmsSigner or a System.Security.Cryptography.Pkcs.CmsRecipient. The subject can be identified by the certificate issuer and serial number, the hash of the subject key, or the subject key.

The System.Security.Cryptography.Pkcs.SubjectIdentifierOrKeyType enumeration defines how a subject is identified.

The System.Security.Cryptography.Pkcs.SubjectIdentifierType enumeration defines the type of subject identifier.