X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=FAQ;h=24f4de7727028aefcaf97b9a55dc338b7a72d200;hp=fae0b855bf82d847ef64da709422d01909c4fca2;hb=d4e573f3056351f96c4c4a2a275f5d1da9b08969;hpb=0c4d9b2fbc792b6780d935b21b5583716615c724

diff --git a/FAQ b/FAQ
index fae0b855bf..24f4de7727 100644
--- a/FAQ
+++ b/FAQ
@@ -9,6 +9,7 @@ OpenSSL  -  Frequently Asked Questions
 * Where can I get a compiled version of OpenSSL?
 * Why aren't tools like 'autoconf' and 'libtool' used?
 * What is an 'engine' version?
+* How do I check the authenticity of the OpenSSL distribution?
 
 [LEGAL] Legal questions
 
@@ -36,9 +37,13 @@ OpenSSL  -  Frequently Asked Questions
 * Why does the linker complain about undefined symbols?
 * Why does the OpenSSL test fail with "bc: command not found"?
 * Why does the OpenSSL test fail with "bc: 1 no implemented"?
+* Why does the OpenSSL test fail with "bc: stack empty"?
 * Why does the OpenSSL compilation fail on Alpha Tru64 Unix?
 * Why does the OpenSSL compilation fail with "ar: command not found"?
 * Why does the OpenSSL compilation fail on Win32 with VC++?
+* What is special about OpenSSL on Redhat?
+* Why does the OpenSSL compilation fail on MacOS X?
+* Why does the OpenSSL test suite fail on MacOS X?
 
 [PROG] Questions about programming with OpenSSL
 
@@ -61,7 +66,7 @@ OpenSSL  -  Frequently Asked Questions
 * Which is the current version of OpenSSL?
 
 The current version is available from <URL: http://www.openssl.org>.
-OpenSSL 0.9.6d was released on May 9, 2002.
+OpenSSL 0.9.6g was released on August 9, 2002.
 
 In addition to the current stable release, you can also access daily
 snapshots of the OpenSSL development version at <URL:
@@ -132,6 +137,19 @@ hardware. This was realized in a special release '0.9.6-engine'. With
 version 0.9.7 (not yet released) the changes were merged into the main
 development line, so that the special release is no longer necessary.
 
+* How do I check the authenticity of the OpenSSL distribution?
+
+We provide MD5 digests and ASC signatures of each tarball.
+Use MD5 to check that a tarball from a mirror site is identical:
+
+   md5sum TARBALL | awk '{print $1;}' | cmp - TARBALL.md5
+
+You can check authenticity using pgp or gpg. You need the OpenSSL team
+member public key used to sign it (download it from a key server). Then
+just do:
+
+   pgp TARBALL.asc
+
 [LEGAL] =======================================================================
 
 * Do I need patent licenses to use OpenSSL?
@@ -222,6 +240,8 @@ support can be found at
   http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsrdb/27606&zone_32=SUNWski
 However, be warned that /dev/random is usually a blocking device, which
 may have some effects on OpenSSL.
+A third party /dev/random solution for Solaris is available at
+  http://www.cosy.sbg.ac.at/~andi/
 
 
 * Why do I get an "unable to write 'random state'" error message?
@@ -399,6 +419,17 @@ and compile/install it.  GNU bc (see http://www.gnu.org/software/software.html
 for download instructions) can be safely used, for example.
 
 
+* Why does the OpenSSL test fail with "bc: stack empty"?
+
+On some DG/ux versions, bc seems to have a too small stack for calculations
+that the OpenSSL bntest throws at it.  This gets triggered when you run the
+test suite (using "make test").  The message returned is "bc: stack empty".
+
+The best way to deal with this is to find another implementation of bc
+and compile/install it.  GNU bc (see http://www.gnu.org/software/software.html
+for download instructions) can be safely used, for example.
+
+
 * Why does the OpenSSL compilation fail on Alpha Tru64 Unix?
 
 On some Alpha installations running Tru64 Unix and Compaq C, the compilation
@@ -463,6 +494,64 @@ under 'Program Files').  This needs to be done prior to running NMAKE,
 and the changes are only valid for the current DOS session.
 
 
+* What is special about OpenSSL on Redhat?
+
+Red Hat Linux (release 7.0 and later) include a preinstalled limited
+version of OpenSSL. For patent reasons, support for IDEA, RC5 and MDC2
+is disabled in this version. The same may apply to other Linux distributions.
+Users may therefore wish to install more or all of the features left out.
+
+To do this you MUST ensure that you do not overwrite the openssl that is in
+/usr/bin on your Red Hat machine. Several packages depend on this file,
+including sendmail and ssh. /usr/local/bin is a good alternative choice. The
+libraries that come with Red Hat 7.0 onwards have different names and so are
+not affected. (eg For Red Hat 7.2 they are /lib/libssl.so.0.9.6b and
+/lib/libcrypto.so.0.9.6b with symlinks /lib/libssl.so.2 and
+/lib/libcrypto.so.2 respectively).
+
+Please note that we have been advised by Red Hat attempting to recompile the
+openssl rpm with all the cryptography enabled will not work. All other
+packages depend on the original Red Hat supplied openssl package. It is also
+worth noting that due to the way Red Hat supplies its packages, updates to
+openssl on each distribution never change the package version, only the
+build number. For example, on Red Hat 7.1, the latest openssl package has
+version number 0.9.6 and build number 9 even though it contains all the
+relevant updates in packages up to and including 0.9.6b.
+
+A possible way around this is to persuade Red Hat to produce a non-US
+version of Red Hat Linux.
+
+FYI: Patent numbers and expiry dates of US patents:
+MDC-2: 4,908,861 13/03/2007
+IDEA:  5,214,703 25/05/2010
+RC5:   5,724,428 03/03/2015
+
+
+* Why does the OpenSSL compilation fail on MacOS X?
+
+If the failure happens when trying to build the "openssl" binary, with
+a large number of undefined symbols, it's very probable that you have
+OpenSSL 0.9.6b delivered with the operating system (you can find out by
+running '/usr/bin/openssl version') and that you were trying to build
+OpenSSL 0.9.7 or newer.  The problem is that the loader ('ld') in
+MacOS X has a misfeature that's quite difficult to go around.
+Look in the file PROBLEMS for a more detailed explanation and for possible
+solutions.
+
+
+* Why does the OpenSSL test suite fail on MacOS X?
+
+If the failure happens when running 'make test' and the RC4 test fails,
+it's very probable that you have OpenSSL 0.9.6b delivered with the
+operating system (you can find out by running '/usr/bin/openssl version')
+and that you were trying to build OpenSSL 0.9.6d.  The problem is that
+the loader ('ld') in MacOS X has a misfeature that's quite difficult to
+go around and has linked the programs "openssl" and the test programs
+with /usr/lib/libcrypto.dylib and /usr/lib/libssl.dylib instead of the
+libraries you just built.
+Look in the file PROBLEMS for a more detailed explanation and for possible
+solutions.
+
 [PROG] ========================================================================
 
 * Is OpenSSL thread-safe?