[stunnel-users] Stunnel 4.56 and FIPS

Ondrej Hrebicek ondrej at gmail.com
Mon Jul 8 08:35:46 CEST 2013


Hello stunnel users,

I'm trying to compile stunnel 4.56 with FIPS support on Ubuntu 12.04.
Always end up with the infamous "fingerprint does not match" error. I can't
figure out what I'm doing wrong.

1. Download openssl-fips-2.0.2.tar.gz, unpack, ./config, make, and sudo
make install (as specified in
http://www.openssl.org/docs/fips/UserGuide-2.0.pdf)

2. Download openssl-1.0.1e.tar.gz, unpack, ./config fips
--with-fipslibdir=/usr/local/ssl/fips-2.0/lib/
--with-fipsdir=/usr/local/ssl/fips-2.0/, make depend, make, and sudo make
install

3. At this point, openssl is working in FIPS mode:
    > OPENSSL_FIPS=1 /usr/local/ssl/bin/openssl version
    OpenSSL 1.0.1e-fips 11 Feb 2013

    > OPENSSL_FIPS=1 /usr/local/ssl/bin/openssl sha1 c_rehash
    SHA1(c_rehash)= 5af9e1479950bbbd9d3304c181b3f802c54f64fd

    > OPENSSL_FIPS=1 /usr/local/ssl/bin/openssl md5 c_rehash
    Error setting digest md5
    139806582736544:error:060A80A3:digital envelope
routines:FIPS_DIGESTINIT:disabled for fips:fips_md.c:180:

4. Download stunnel-4.56.tar.gz, unpack, ./configure --enable-fips
--with-ssl=/usr/local/ssl, make, and sudo make install

5. While configuring and building stunnel completes as expected, the
following does appear in ./configure's output:

    checking whether to enable FIPS mode support... yes
    configure: **************************************** SSL
    checking for SSL directory... /usr/local/ssl
    checking /usr/local/ssl/include/openssl/engine.h usability... yes
    checking /usr/local/ssl/include/openssl/engine.h presence... yes
    checking for /usr/local/ssl/include/openssl/engine.h... yes
    checking /usr/local/ssl/include/openssl/ocsp.h usability... yes
    checking /usr/local/ssl/include/openssl/ocsp.h presence... yes
    checking for /usr/local/ssl/include/openssl/ocsp.h... yes
    checking /usr/local/ssl/include/openssl/fips.h usability... no
    checking /usr/local/ssl/include/openssl/fips.h presence... no
    checking for /usr/local/ssl/include/openssl/fips.h... no
    configure: WARNING: OpenSSL fips header not found

This is not entirely unexpected as fips.h only exists
in /usr/local/ssl/fips-2.0/include/openssl.

6. Running stunnel however fails:

    > /usr/local/bin/stunnel
    Clients allowed=500
    stunnel 4.56 on x86_64-unknown-linux-gnu platform
    Compiled/running with OpenSSL 1.0.1e-fips 11 Feb 2013
    Threading:PTHREAD Sockets:POLL,IPv6 SSL:ENGINE,OCSP,FIPS
    Reading configuration from file /usr/local/etc/stunnel/stunnel.conf
    FIPS_mode_set: 2D06B06F: error:2D06B06F:FIPS
routines:FIPS_check_incore_fingerprint:fingerprint does not match
    Line 61: "[pop3s]": Failed to initialize SSL
    str_stats: 5 block(s), 120 data byte(s), 290 control byte(s)

I can't figure out what's causing this, hoping someone on the list may have
a couple suggestions. Thanks in advance!
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