CmsSigner class

Represents CMS per-signer information.

Inheritance: CmsSigner → CustomPackage → MetadataPackage

The CmsSigner type exposes the following members:

Property	Description
metadata_type	Gets the metadata type.
keys	Gets a collection of the metadata property names.
property_descriptors	Gets a collection of descriptors that contain information about properties accessible through the GroupDocs.Metadata search engine.
count	Gets the number of metadata properties.
signer_identifier	Gets the signer’s certificate (and thereby the signer’s public key) raw data.
digest_algorithm	Gets the message digest algorithm, and any associated parameters, used by the signer.
signed_attributes	Gets the collection of attributes that are signed.
signature_algorithm	Gets the signature algorithm, and any associated parameters, used by the signer to generate the digital signature.
signature_value	Gets the result of digital signature generation, using the message digest and the signer’s private key.
unsigned_attributes	Gets the collection of attributes that are not signed.
signing_time	Gets the time at which the signer (purportedly) performed the signing process.

Method	Description
`contains(self, property_name)`	Determines whether the package contains a metadata property with the specified name.
`find_properties(self, specification)`	Finds the metadata properties satisfying a specification. The search is recursive so it affects all nested packages as well.
`update_properties(self, specification, value)`	Updates known metadata properties satisfying a specification. The operation is recursive so it affects all nested packages as well.
`remove_properties(self, specification)`	Removes metadata properties satisfying a specification.
`add_properties(self, specification, value)`	Adds known metadata properties satisfying the specification. The operation is recursive so it affects all nested packages as well.
`set_properties(self, specification, value)`	Sets known metadata properties satisfying the specification. The operation is recursive so it affects all nested packages as well. This method is a combination of `MetadataPackage.add_properties` and `MetadataPackage.update_properties`. If an existing property satisfies the specification its value is updated. If there is a known property missing in the package that satisfies the specification it is added to the package.
`sanitize(self)`	Removes writable metadata properties from the package. The operation is recursive so it affects all nested packages as well.