CoseSign1Message.VerifyDetachedAsync Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Asynchronously verifies that the signature is valid for the content using the specified key.
public System.Threading.Tasks.Task<bool> VerifyDetachedAsync (System.Security.Cryptography.AsymmetricAlgorithm key, System.IO.Stream detachedContent, ReadOnlyMemory<byte> associatedData = default, System.Threading.CancellationToken cancellationToken = default);
member this.VerifyDetachedAsync : System.Security.Cryptography.AsymmetricAlgorithm * System.IO.Stream * ReadOnlyMemory<byte> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<bool>
Public Function VerifyDetachedAsync (key As AsymmetricAlgorithm, detachedContent As Stream, Optional associatedData As ReadOnlyMemory(Of Byte) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As Task(Of Boolean)
Parameters
The public key that is associated with the private key that was used to sign the content.
- detachedContent
- Stream
The content that was previously signed.
- associatedData
- ReadOnlyMemory<Byte>
The extra data associated with the signature, which must match the value provided during signing.
- cancellationToken
- CancellationToken
The token to monitor for cancellation requests. The default value is None.
Returns
A task whose Task<TResult> property is true
if the signature is valid; otherwise, false
.
Exceptions
key
or detachedContent
is null
.
key
is of an unsupported type.
-or-
detachedContent
does not support reading or seeking.
The content is embedded on this message, use an overload that uses embedded content.
ProtectedHeaders does not have a value for the Algorithm header.
-or-
The algorithm protected header was incorrectly formatted.
-or-
The algorithm protected header was not one of the values supported by this implementation.
-or-
The algorithm protected header doesn't match with the algorithms supported by the specified key
.
The cancellation token was canceled. This exception is stored into the returned task.