In my use case I use HS256 so its a shared secret normally using a string with environment variable or something, not a key file. The jwt mod expects a file to load up the secret/key. So I just create a file with the secret inside the file, but I keep getting. ``` failed to decode jwt value ```
After digging into the source and trying to debug. It looks like when it's handing secret in a file the kdata.len is off by one.
This is the dirty fix for me. ``` diff --git a/src/modules/jwt/jwt_mod.c b/src/modules/jwt/jwt_mod.c index 233a0709..a67d0b89 100644 --- a/src/modules/jwt/jwt_mod.c +++ b/src/modules/jwt/jwt_mod.c @@ -509,7 +509,7 @@ static int ki_jwt_verify(sip_msg_t* msg, str *key, str *alg, str *claims, } }
- ret = jwt_decode(&jwt, jwtval->s, (unsigned char*)kdata.s, (size_t)kdata.len); + ret = jwt_decode(&jwt, jwtval->s, (unsigned char*)kdata.s, (size_t)kdata.len-1); if (ret!=0 || jwt==NULL) { LM_ERR("failed to decode jwt value\n"); goto error; ```