Yubico/libfido2

Issue happen on using fido_dev_make_cred and return FIDO_ERR_INVALID_LENGTH

xuke100 opened this issue · 3 comments

xuke100 commented

We are using libfido2 on mac laptop, and issue happen on using int fido_dev_make_cred(fido_dev_t* dev, fido_cred_t * cred, const char *) and return FIDO_ERR_INVALID_LENGTH,
does any experts can help to point out which invalid fido_cred_t or fido_dev_t may not correct?

what we set in cred:

cd: "type":"webauthn.create","challenge":"Yg7fiTPnO-70yc20oZ_ttMOtdov7tj7Ms0M56bgu-qw","origin":"https://webauthn.io". len-115
cdh: sha256(cd). len-32
rp: id-"webauthn.io", name-"webauthn.io"
user: id-ptr, display_name-"test", name-"test", icon-""
type: -7

kongeo commented

Hi, thanks for your question! Would you please enable debug logging in the library by setting the FIDO_DEBUG environment variable to 1 and share with us the output?

xuke100 commented

Thanks for help, we found that issue is can't set "" for icon in User if icon is NULL

kongeo commented

Glad you've found the cause of the issue! Closing this as resolved :)