<PackageReference Include="Microsoft.IdentityModel.Tokens" Version="8.19.1" />

Microsoft.IdentityModel.Tokens.IssuerSigningKeyValidator

public sealed delegate IssuerSigningKeyValidator : MulticastDelegate
Validates the signing key used for the security token.
public IssuerSigningKeyValidator(object object, IntPtr method)

public virtual IAsyncResult BeginInvoke(SecurityKey securityKey, SecurityToken securityToken, TokenValidationParameters validationParameters, AsyncCallback callback, object object)

public virtual bool EndInvoke(IAsyncResult result)

public virtual bool Invoke(SecurityKey securityKey, SecurityToken securityToken, TokenValidationParameters validationParameters)