SignedCms.Decode Method
Namespace: System.Security.Cryptography.Pkcs
Assembly: System.Security (in System.Security.dll)
Parameters
- encodedMessage
- Type: System.Byte[]
Array of byte values that represents the encoded CMS/PKCS #7 message to be decoded.
| Exception | Condition |
|---|---|
| ArgumentNullException | A null reference was passed to a method that does not accept it as a valid argument. |
| CryptographicException | A cryptographic operation could not be completed. |
The following example shows the placement of the Decode method in the process of verifying the signatures on a SignedCms message. In this example, the message content is not detached, so the message content is included in the SignedCms message.
The following example shows the placement of the Decode method in the process of verifying the signatures on a SignedCms message. In this example, the message content is detached, so the message content must be verified independently of the SignedCms message.
// Create a ContentInfo object from the inner content obtained // independently from encodedMessage. ContentInfo contentInfo = new ContentInfo(innerContent); // Create a new, detached SignedCms message. SignedCms signedCms = new SignedCms(contentInfo, true); // encodedMessage is the encoded message received from // the sender. signedCms.Decode(encodedMessage); // Verify the signature without validating the // certificate. signedCms.CheckSignature(true);
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.