jwtSecurityToken 标头中缺少“alg”

Question

当我要验证 jwt 令牌时，不解码不返回“alg”并且始终使令牌验证无效。默认情况下在 System.IdentityModel.Tokens.Jwt

中验证

例外：

IDX10503: Signature validation failed. Token does not have a kid. Keys tried: 'Microsoft.IdentityModel.Tokens.RsaSecurityKey, KeyId: '', InternalId: 'Y-aoLdlxdepu_g1odJVOn_g-FlaitSghcGfrV1vSuxg'. , KeyId: 
    '. Number of keys in TokenValidationParameters: '0'. 
    Number of keys in Configuration: '0'. 
    Exceptions caught:
     'Microsoft.IdentityModel.Tokens.SecurityTokenInvalidAlgorithmException: IDX10696: The algorithm 'Null' is not in the user-defined accepted list of algorithms.

Answer 1

我已将软件包

System.IdentityModel.Tokens.Jwt 

从

7.2.0

更新为

7.4.1

并且可以正常使用。