Preauth API failing but check and ping are good


Hi Team,

I reffed to to use DUO Auth API for check and preauth.
i used this and with this the ping and check API’ are success but Preauth api i am getting 40103 Invalid signature in request credentials and i am using the correct ikey and skey that are created for Auth API in duo admin console

Could you please suggest me on how to resolve this issue.

Thank you


Per this Duo KB article, please try the following suggestions:

Verify that the signature is encoded in hexadecimal ASCII; is using the correct HMAC-SHA1 signature as the password; lists parameters in alphabetical order.