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2014-02-12Split crypto_global_init() into pre/post configNick Mathewson
It's increasingly apparent that we want to make sure we initialize our PRNG nice and early, or else OpenSSL will do it for us. (OpenSSL doesn't do _too_ bad a job, but it's nice to do it ourselves.) We'll also need this for making sure we initialize the siphash key before we do any hashes.
2014-02-06Some anti-forensics paranoia...Florent Daigniere
sed -i 's/BN_free/BN_clear_free/g'
2014-02-03Some anti-forensics paranoia...Florent Daigniere
sed -i 's/BN_free/BN_clear_free/g'
2013-12-18Merge remote-tracking branch 'origin/maint-0.2.4'Nick Mathewson
Conflicts: src/common/crypto.c
2013-12-18Never allow OpenSSL engines to replace the RAND_SSLeay methodNick Mathewson
This fixes bug 10402, where the rdrand engine would use the rdrand instruction, not as an additional entropy source, but as a replacement for the entire userspace PRNG. That's obviously stupid: even if you don't think that RDRAND is a likely security risk, the right response to an alleged new alleged entropy source is never to throw away all previously used entropy sources. Thanks to coderman and rl1987 for diagnosing and tracking this down.
2013-11-18Fix compilation under openssl 0.9.8Nick Mathewson
It's not nice to talk about NID_aes_{128,256}_{ctr,gcm} when they don't exist. Fix on 84458b79a78ea7e26820bf0; bug not in any released Tor.
2013-11-18Log more OpenSSL engine statuses at startup.Nick Mathewson
Fixes ticket 10043; patch from Joshua Datko.
2013-09-13Merge remote-tracking branch 'Ryman/bug6384'Nick Mathewson
Conflicts: src/or/config.c src/or/main.c
2013-09-13Merge remote-tracking branch 'ctoader/gsoc-cap-stage2'Nick Mathewson
Conflicts: src/common/sandbox.c
2013-09-04Fixed leak and added minor documentation for #6384.Kevin Butler
2013-09-01Added --library-versions flag to print the compile time and runtime versions ↵Kevin Butler
of libevent, openssl and zlib. Partially implements #6384.
2013-08-15More unit tests for handle_client_auth_nonceNick Mathewson
Incidentally, this business here where I make crypto_rand mockable: this is exactly the kind of thing that would make me never want to include test-support stuff in production builds.
2013-08-09updated filters to work with orportCristian Toader
2013-07-10Completely refactor how FILENAME_PRIVATE worksNick Mathewson
We previously used FILENAME_PRIVATE identifiers mostly for identifiers exposed only to the unit tests... but also for identifiers exposed to the benchmarker, and sometimes for identifiers exposed to a similar module, and occasionally for no really good reason at all. Now, we use FILENAME_PRIVATE identifiers for identifiers shared by Tor and the unit tests. They should be defined static when we aren't building the unit test, and globally visible otherwise. (The STATIC macro will keep us honest here.) For identifiers used only by the unit tests and never by Tor at all, on the other hand, we wrap them in #ifdef TOR_UNIT_TESTS. This is not the motivating use case for the split test/non-test build system; it's just a test example to see how it works, and to take a chance to clean up the code a little.
2013-06-10Make OPENSSL_free(dh_string_repr) conditional.Nick Mathewson
2013-06-06Bug #5170 - also simplify i2d_DHparamsMarek Majkowski
2013-06-06Bug #5170 - i2d_RSAPublicKey supports allocating its own output bufferMarek Majkowski
2013-05-17Remove PK_PKCS1_PADDINGArlo Breault
See #8792
2013-04-18Merge remote-tracking branch 'origin/maint-0.2.4'Nick Mathewson
Conflicts: src/common/crypto.c
2013-04-18Remove a double-newlineNick Mathewson
2013-04-18Merge branch 'less_charbuf_rebased' into maint-0.2.4Nick Mathewson
Conflicts: src/or/dirserv.c src/or/dirserv.h src/test/test_dir.c
2013-04-18Fix a couple of documentation issues.Nick Mathewson
2013-04-18Refactor dirobj signature generationNick Mathewson
Now we can compute the hash and signature of a dirobj before concatenating the smartlist, and we don't need to play silly games with sigbuf and realloc any more.
2013-03-18Merge remote-tracking branch 'origin/maint-0.2.4'Nick Mathewson
2013-03-18Merge remote-tracking branch 'public/bug6673' into maint-0.2.4Nick Mathewson
2013-03-15Merge remote-tracking branch 'origin/maint-0.2.4'Nick Mathewson
Conflicts: src/or/routerlist.c
2013-03-11Give an #error when we want threads and OpenSSL has disabled threadsNick Mathewson
Fixes ticket 6673.
2013-03-01Remove unused check_fingerprint_syntaxNick Mathewson
2013-03-01Remove unused HMAC-SHA1 functionNick Mathewson
(We're not adding any new SHA1 instances in our protocols, so this should never actually be needed.)
2013-02-23Remove some functions which were unused except for their testsNick Mathewson
2013-02-23Remove a bunch of unused macro definitionsNick Mathewson
2013-02-08Fix numerous problems with Tor's weak RNG.Nick Mathewson
We need a weak RNG in a couple of places where the strong RNG is both needless and too slow. We had been using the weak RNG from our platform's libc implementation, but that was problematic (because many platforms have exceptionally horrible weak RNGs -- like, ones that only return values between 0 and SHORT_MAX) and because we were using it in a way that was wrong for LCG-based weak RNGs. (We were counting on the low bits of the LCG output to be as random as the high ones, which isn't true.) This patch adds a separate type for a weak RNG, adds an LCG implementation for it, and uses that exclusively where we had been using the platform weak RNG.
2013-02-01fix wide lines from tor_log renameNick Mathewson
2013-02-01Rename log() to tor_log() for loggingNick Mathewson
This is meant to avoid conflict with the built-in log() function in math.h. It resolves ticket 7599. First reported by dhill. This was generated with the following perl script: #!/usr/bin/perl -w -i -p s/\blog\(LOG_(ERR|WARN|NOTICE|INFO|DEBUG)\s*,\s*/log_\L$1\(/g; s/\blog\(/tor_log\(/g;
2013-01-17Replace base-{16,32,64} with base{16,32,64} in the codeNick Mathewson
Patch from onizuka generated with find ./ -type f -perm -u+rw -exec sed -ri 's/(Base)-(16|32|64)/\1\2/gi' {} \; Fixes issue 6875 on Tor.
2013-01-16Merge branch '024_msvc_squashed'Nick Mathewson
Conflicts: src/or/or.h srcwin32/orconfig.h
2013-01-16When building with MSVC, call every enum bitfield unsignedNick Mathewson
Fixes bug 7305.
2013-01-16Update the copyright date to 201.Nick Mathewson
2013-01-03Merge branch 'ntor-resquashed'Nick Mathewson
Conflicts: src/or/cpuworker.c src/or/or.h src/test/bench.c
2013-01-02Refactor strong os-RNG into its own functionNick Mathewson
Previously, we only used the strong OS entropy source as part of seeding OpenSSL's RNG. But with curve25519, we'll have occasion to want to generate some keys using extremely-good entopy, as well as the means to do so. So let's! This patch refactors the OS-entropy wrapper into its own crypto_strongest_rand() function, and makes our new curve25519_secret_key_generate function try it as appropriate.
2012-12-31Fix a couple of harmless clang3.2 warningsSebastian Hahn
2012-12-06Implement HKDF from RFC5869Nick Mathewson
This is a customizable extract-and-expand HMAC-KDF for deriving keys. It derives from RFC5869, which derives its rationale from Krawczyk, H., "Cryptographic Extraction and Key Derivation: The HKDF Scheme", Proceedings of CRYPTO 2010, 2010, <http://eprint.iacr.org/2010/264>. I'm also renaming the existing KDF, now that Tor has two of them. This is the key derivation scheme specified in ntor. There are also unit tests.
2012-12-06Add a crypto_dh_dup, for benchmark supportNick Mathewson
2012-11-23Refer to RFC 4648 instead of the obsolete RFC 3548Nick Mathewson
Affects comments only. For ticket 6849.
2012-11-08Merge remote-tracking branch 'origin/maint-0.2.3'Nick Mathewson
Conflicts: src/common/crypto.c src/or/rendservice.c
2012-11-08Add and use and unlikely-to-be-eliminated memwipe()Nick Mathewson
Apparently some compilers like to eliminate memset() operations on data that's about to go out-of-scope. I've gone with the safest possible replacement, which might be a bit slow. I don't think this is critical path in any way that will affect performance, but if it is, we can work on that in 0.2.4. Fixes bug 7352.
2012-10-12Rename all reserved C identifiers we definedNick Mathewson
For everything we declare that starts with _, make it end with _ instead. This is a machine-generated patch. To make it, start by getting the list of reserved identifiers using: git ls-tree -r --name-only HEAD | grep '\.[ch]$' | \ xargs ctags --c-kinds=defglmpstuvx -o - | grep '^_' | \ cut -f 1 | sort| uniq You might need gnu ctags. Then pipe the output through this script: ============================== use strict; BEGIN { print "#!/usr/bin/perl -w -i -p\n\n"; } chomp; next if ( /^__attribute__/ or /^__func__/ or /^_FILE_OFFSET_BITS/ or /^_FORTIFY_SOURCE/ or /^_GNU_SOURCE/ or /^_WIN32/ or /^_DARWIN_UNLIMITED/ or /^_FILE_OFFSET_BITS/ or /^_LARGEFILE64_SOURCE/ or /^_LFS64_LARGEFILE/ or /^__cdecl/ or /^__attribute__/ or /^__func__/ or /^_WIN32_WINNT/); my $ident = $_; my $better = $ident; $better =~ s/^_//; $better = "${better}_"; print "s/(?<![A-Za-z0-9_])$ident(?![A-Za-z0-9_])/$better/g;\n"; ============================== Then run the resulting script on all the files you want to change. (That is, all the C except that in src/ext.) 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2012-10-10Fix formatting in various places after 6465/6816 workAndrea Shepard
2012-10-04Merge remote-tracking branch 'public/openssl_1_is_best'Nick Mathewson
2012-09-17Fix documentation for crypto_pk_cmp_keysRobert Ransom
Now that crypto_pk_cmp_keys might return the result of tor_memcmp, there is no guarantee that it will only return -1, 0, or 1. (It currently does only return -1, 0, or 1, but that's a lucky accident due to details of the current implementation of tor_memcmp and the particular input given to it.) Fortunately, none of crypto_pk_cmp_keys's callers rely on this behaviour, so changing its documentation is sufficient.
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