v.15.0.1 failing to accept a Valid License key in Blazor Webassembly

[lars-lindstrom]

I'm tryining to use both AutoMapper and Mediatr in a Blazor Webassembly porject.
Mediatr was working fine, until I tried to add AutoMapper for some DTO conversion.

I'm loading License keys from appsettings using an extension method. I'm using the same pattern in the API, with no problem.
I have checked return values of GetMediatrLicenseKey() and GetAutoMapperLicenseKey() respectively. They return correct License keys.
Btw. adding the License keys directly make no change.

Another user suggested adding a reference to Microsoft.IdentityModel.JsonWebTokens
#4571 (comment)
This didn't solve the problem

// Register Mediatr
builder.Services.AddMediatR(cfg =>
{
    cfg.LicenseKey = builder.Configuration.GetMediatrLicenseKey();
    cfg.RegisterServicesFromAssembly(Assembly.GetExecutingAssembly());
});

// Register AutoMapper
builder.Services.AddAutoMapper(cfg => cfg.LicenseKey = builder.Configuration.GetAutoMapperLicenseKey(), Assembly.GetAssembly(typeof(CompetitionMappingProfile)));

Error message in Chrome debugger:

blazor.webassembly.js:1 Debugging hotkey: Shift+Alt+D (when application has focus)
blazor.webassembly.js:1 crit: LuckyPennySoftware.MediatR.License[0]
      Error validating the Lucky Penny software license key
Microsoft.IdentityModel.Tokens.SecurityTokenInvalidSignatureException: IDX10511: Signature validation failed. Keys tried: 'Microsoft.IdentityModel.Tokens.RsaSecurityKey, KeyId: 'LuckyPennySoftwareLicenseKey/bbb13acb59904d89b4cb1c85f088ccf9', InternalId: 'N56oP13R41MdxD2pkWSTprdH6al1kOe02PaW-jmlf-c'. , KeyId: LuckyPennySoftwareLicenseKey/bbb13acb59904d89b4cb1c85f088ccf9
'. 
Number of keys in TokenValidationParameters: '1'. 
Number of keys in Configuration: '0'. 
Matched key was in 'TokenValidationParameters'. 
kid: 'LuckyPennySoftwareLicenseKey/bbb13acb59904d89b4cb1c85f088ccf9'. 
Exceptions caught:
 '[PII of type 'System.Text.StringBuilder' is hidden. For more details, see https://aka.ms/IdentityModel/PII.]'.
token: '[PII of type 'Microsoft.IdentityModel.JsonWebTokens.JsonWebToken' is hidden. For more details, see https://aka.ms/IdentityModel/PII.]'. See https://aka.ms/IDX10511 for details.
   at Microsoft.IdentityModel.JsonWebTokens.JsonWebTokenHandler.ValidateSignature(:7219/JsonWebToken jwtToken, TokenValidationParameters validationParameters, BaseConfiguration configuration)
   at Microsoft.IdentityModel.JsonWebTokens.JsonWebTokenHandler.ValidateSignatureAndIssuerSecurityKey(:7219/JsonWebToken jsonWebToken, TokenValidationParameters validationParameters, BaseConfiguration configuration)
   at Microsoft.IdentityModel.JsonWebTokens.JsonWebTokenHandler.ValidateJWSAsync(:7219/JsonWebToken jsonWebToken, TokenValidationParameters validationParameters, BaseConfiguration configuration)
``

[lars-lindstrom]

I have investigated some more. Omitting configuration of the License Key solves my problem, but then again then I'm running without a valid license key :-(

I suspect this might indicate the issue is somehow related to the client side evaluation of the License Key.

[jbogard]

This is documented on a branch but isn't in main yet, but for client distribution scenarios, you can omit the license key. Here's the instructions for MediatR:

https://github.com/LuckyPennySoftware/MediatR/wiki/License-Key-Configuration#client-redistribution-scenarios

And replace MediatR in the log filter with AutoMapper.

[jbogard]

Opened a new issue for this one: #4580

[jbogard]

Fixed by #4581

[github-actions]

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