CmsSigner.SignedAttributes Property


The SignedAttributes property retrieves the CryptographicAttributeObjectCollection collection of signed attributes to be associated with the resulting SignerInfo content. Signed attributes are signed along with the specified content.

Namespace:   System.Security.Cryptography.Pkcs
Assembly:  System.Security (in System.Security.dll)

public CryptographicAttributeObjectCollection SignedAttributes { get; }

Property Value

Type: System.Security.Cryptography.CryptographicAttributeObjectCollection

A CryptographicAttributeObjectCollection collection that represents the signed attributes. If there are no signed attributes, the property is an empty collection.

An example of a signed attribute that might be included in the CryptographicAttributeObjectCollection collection retrieved by the SignedAttributes property is the Pkcs9SigningTime signing time attribute.

A Pkcs9ContentType object and a Pkcs9MessageDigest object will be automatically generated and placed in the SignerInfo.SignedAttributes property for the corresponding signer whenever the SignedAttributes property is not empty.

.NET Framework
Available since 2.0
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