[openssl-users] Access Mozilla NSS (shared) Database / PKCS#11 Modules via OpenSSL?

Matthias Ballreich Matthias.Ballreich at outlook.de
Tue Nov 8 16:33:04 UTC 2016

Hi there,

how can i access the Mozilla NSS (shared) Database (cert8 or cert9d.db) / PKCS#11-Modules via OpenSSL?

I need read & write access to the NSS User Cert Database (softokn3) and to the Built-In Cert Database (nssckbi) under Windows.

I tried it with Libp11 this way:

int rc = 0;
        PKCS11_CTX *pkcs11_ctx;
        pkcs11_ctx = PKCS11_CTX_new();
                             "configdir=''C:/Users/Username/AppData/Roaming/Mozilla/Firefox/Profiles/5wzkdcjx.default' certPrefix='' keyPrefix='' secmod='secmod.db'");
        rc = PKCS11_CTX_load(pkcs11_ctx, " C:/Program Files (x86)/Mozilla/Firefox/softokn3.dll ");
        printf("Desc: %s\n", pkcs11_ctx->description);
        if (rc)
                printf("Error loading Module");

But it return every time "-1" which tells me that the loading fails. So is this the right way? Or should I use another library? Or is my code not right?

And can I edit the Trust Settings with that or another library like with NSS directly? Because I can't delete the built-in certs of nssckbi because this is read-only I can edit the Trust-Settings for that certificate. Can I do that with OpenSSL in combination with a library, too? Or should I better use NSS instead of OpenSSL?


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