JsonWebTokenHandler.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 virtual bool CanReadToken (string token);abstract member CanReadToken : string -> bool
override this.CanReadToken : string -> boolPublic Overridable 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:
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-_]$"