X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=FAQ;h=98b86b877ab40bce8ebe74bc0e14281a6ccd88ca;hb=fb4c24b6e76c511eb86fe90e5b0f0c8e80c28cc6;hp=c31c1ee36ed95afb97e963e4ff952cc271c06121;hpb=f871949efd831116c9e7b138c206f284f1278d61;p=oweals%2Fopenssl.git

diff --git a/FAQ b/FAQ
index c31c1ee36e..98b86b877a 100644
--- a/FAQ
+++ b/FAQ
@@ -66,6 +66,7 @@ OpenSSL  -  Frequently Asked Questions
 * Why doesn't my server application receive a client certificate?
 * Why does compilation fail due to an undefined symbol NID_uniqueIdentifier?
 * I think I've detected a memory leak, is this a bug?
+* Why does Valgrind complain about the use of uninitialized data?
 
 ===============================================================================
 
@@ -74,7 +75,7 @@ OpenSSL  -  Frequently Asked Questions
 * Which is the current version of OpenSSL?
 
 The current version is available from <URL: http://www.openssl.org>.
-OpenSSL 0.9.8b was released on May 4th, 2006.
+OpenSSL 0.9.8g was released on October 19th, 2007.
 
 In addition to the current stable release, you can also access daily
 snapshots of the OpenSSL development version at <URL:
@@ -679,8 +680,9 @@ libraries.  If your platform is not one of these, consult the INSTALL
 file.
 
 Multi-threaded applications must provide two callback functions to
-OpenSSL.  This is described in the threads(3) manpage.
-
+OpenSSL by calling CRYPTO_set_locking_callback() and
+CRYPTO_set_id_callback().  This is described in the threads(3)
+manpage.
 
 * I've compiled a program under Windows and it crashes: why?
 
@@ -821,11 +823,11 @@ code itself (the hex digits after the second colon).
 
 * Why do I get errors about unknown algorithms?
 
-This can happen under several circumstances such as reading in an
-encrypted private key or attempting to decrypt a PKCS#12 file. The cause
-is forgetting to load OpenSSL's table of algorithms with
-OpenSSL_add_all_algorithms(). See the manual page for more information.
-
+The cause is forgetting to load OpenSSL's table of algorithms with
+OpenSSL_add_all_algorithms(). See the manual page for more information. This
+can cause several problems such as being unable to read in an encrypted
+PEM file, unable to decrypt a PKCS#12 file or signature failure when
+verifying certificates.
 
 * Why can't the OpenSSH configure script detect OpenSSL?
 
@@ -893,5 +895,15 @@ thread-safe):
   ERR_free_strings(), EVP_cleanup() and CRYPTO_cleanup_all_ex_data().
 
 
+* Why does Valgrind complain about the use of uninitialized data?
+
+When OpenSSL's PRNG routines are called to generate random numbers the supplied
+buffer contents are mixed into the entropy pool: so it technically does not
+matter whether the buffer is initialized at this point or not.  Valgrind (and
+other test tools) will complain about this. When using Valgrind, make sure the
+OpenSSL library has been compiled with the PURIFY macro defined (-DPURIFY)
+to get rid of these warnings.
+
+
 ===============================================================================