CoseSign1Message.VerifyDetachedAsync Method
Definition
Important
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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.
