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Ruben Undheim ruben.undheim at gmail.com> 1.) You link against libgnutls-openssl-dev which provides a wrapper for RAND_bytes. > > 2.) We move to GNUtls (or gcrypt?) to call the function that RAND_bytes is wrapped around (after reading the documentation) > > 3.) We use GNU nettle and their yarrow-256 implementation (assuming that is a smart move)? Thanks. I did #1. Here's the patch: Index: openbsc/openbsc/configure.ac =================================================================== --- openbsc.orig/openbsc/configure.ac 2016-02-19 20:39:10.824145024 +0100 +++ openbsc/openbsc/configure.ac 2016-02-19 20:39:10.820145095 +0100 @@ -27,7 +27,8 @@ PKG_CHECK_MODULES(LIBOSMOABIS, libosmoabis >= 0.2.0) PKG_CHECK_MODULES(LIBOSMOGB, libosmogb >= 0.6.4) PKG_CHECK_MODULES(LIBOSMONETIF, libosmo-netif >= 0.0.1) -PKG_CHECK_MODULES(LIBCRYPTO, libcrypto >= 0.9.5) +#PKG_CHECK_MODULES(LIBCRYPTO, gnutls) +AC_SUBST(LIBCRYPTO_LIBS, -lgnutls-openssl) # Enabke/disable the NAT? AC_ARG_ENABLE([nat], [AS_HELP_STRING([--enable-nat], [Build the BSC NAT. Requires SCCP])], Index: openbsc/openbsc/src/libmsc/auth.c =================================================================== --- openbsc.orig/openbsc/src/libmsc/auth.c 2016-02-19 20:13:19.417462737 +0100 +++ openbsc/openbsc/src/libmsc/auth.c 2016-02-19 20:40:13.607032169 +0100 @@ -27,7 +27,7 @@ #include <osmocom/gsm/comp128.h> -#include <openssl/rand.h> +#include <gnutls/openssl.h> #include <stdlib.h> Index: openbsc/openbsc/src/libmsc/db.c =================================================================== --- openbsc.orig/openbsc/src/libmsc/db.c 2016-02-19 20:13:19.421462672 +0100 +++ openbsc/openbsc/src/libmsc/db.c 2016-02-19 20:40:27.318789122 +0100 @@ -38,7 +38,7 @@ #include <osmocom/core/statistics.h> #include <osmocom/core/rate_ctr.h> -#include <openssl/rand.h> +#include <gnutls/openssl.h> /* Semi-Private-Interface (SPI) for the subscriber code */ void subscr_direct_free(struct gsm_subscriber *subscr); Index: openbsc/openbsc/src/osmo-bsc_nat/bsc_nat.c =================================================================== --- openbsc.orig/openbsc/src/osmo-bsc_nat/bsc_nat.c 2016-02-19 20:13:19.433462478 +0100 +++ openbsc/openbsc/src/osmo-bsc_nat/bsc_nat.c 2016-02-19 20:39:58.791294787 +0100 @@ -69,7 +69,7 @@ #include <osmocom/abis/ipa.h> -#include <openssl/rand.h> +#include <gnutls/openssl.h> #include "../../bscconfig.h" It seems to work. Luckily the SSL library isn't used for anything advanced. Cool if you also figure out a way to solve this upstream! Cheers Ruben