JwtSecurityTokenHandler.CanReadToken(String) Method
Definition
Important
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Determines if the string is a well formed Json Web Token (JWT).
See: https://datatracker.ietf.org/doc/html/rfc7519
public override bool CanReadToken (string token);override this.CanReadToken : string -> boolPublic Overrides Function CanReadToken (token As String) As BooleanParameters
- token
- String
String that should represent a valid JWT.
Returns
'false' if the token is null or whitespace.
'false' if token.Length is greater than MaximumTokenSizeInBytes.
'true' if the token is in JSON compact serialization format.
Remarks
Uses IsMatch(String, String) matching one of:
JWS: @"^[A-Za-z0-9-_]+\.[A-Za-z0-9-_]+\.[A-Za-z0-9-_]*$"
JWE: (dir): @"^[A-Za-z0-9-_]+\.\.[A-Za-z0-9-_]+\.[A-Za-z0-9-_]+\.[A-Za-z0-9-_]*$"
JWE: (wrappedkey): @"^[A-Za-z0-9-_]+\.[A-Za-z0-9-_]+\.[A-Za-z0-9-_]+\.[A-Za-z0-9-_]+\.[A-Za-z0-9-_]$"