226294 2021-05-26 14:26:50 -0700 Use timingsafe_bcmp() in WTF::constantTimeMemcmp() when available 2021-05-30 09:57:07 -0700 1 1 1 Unclassified WebKit Web Template Framework WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 cdumez cdumez achristensen benjamin cmarcelo darin ews-watchlist ggaren sam webkit-bug-importer oldest_to_newest 1764056 0 cdumez 2021-05-26 14:26:50 -0700 Use timingsafe_bcmp() in WTF::constantTimeMemcmp() when available, instead of our own custom implementation. 1764057 1 429795 cdumez 2021-05-26 14:28:28 -0700 Created attachment 429795 Patch 1764116 2 429795 achristensen 2021-05-26 16:47:12 -0700 Comment on attachment 429795 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=429795&action=review > Source/WTF/wtf/CryptographicUtilities.cpp:36 > + return timingsafe_bcmp(voidA, voidB, length); Why not timingsafe_memcmp, or should we rename constantTimeMemcmp to constantTimeBCmp? 1764120 3 cdumez 2021-05-26 16:50:25 -0700 (In reply to Alex Christensen from comment #2) > Comment on attachment 429795 [details] > Patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=429795&action=review > > > Source/WTF/wtf/CryptographicUtilities.cpp:36 > > + return timingsafe_bcmp(voidA, voidB, length); > > Why not timingsafe_memcmp, or should we rename constantTimeMemcmp to > constantTimeBCmp? I didn't choose how the system API is called :) No, I cannot rename the system API to timingsafe_memcmp. We could rename the WTF:: constantTimeMemcmp to match BSD's naming but I personally prefer the memcmp naming. 1764129 4 429795 achristensen 2021-05-26 17:02:57 -0700 Comment on attachment 429795 Patch Oh, I was looking at the bsd documentation, which has both. memcmp implies a directional return value that can be used in sorting, but this doesn't have that property. Our use only checks whether it's zero, though, so it's fine so far. 1764140 5 429795 ap 2021-05-26 17:26:59 -0700 Comment on attachment 429795 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=429795&action=review > Source/WTF/wtf/CryptographicUtilities.cpp:33 > NEVER_INLINE int constantTimeMemcmp(const void* voidA, const void* voidB, size_t length) This wrapper that's in a different dylib and forces no inlining is slightly wasteful when calling the system API. Perhaps implement the system API path in the header? 1764146 6 ews-feeder 2021-05-26 17:39:13 -0700 Committed r278140 (238185@main): <https://commits.webkit.org/238185@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 429795. 1764147 7 webkit-bug-importer 2021-05-26 17:40:17 -0700 <rdar://problem/78542643> 1764152 8 cdumez 2021-05-26 17:56:06 -0700 (In reply to Alexey Proskuryakov from comment #5) > Comment on attachment 429795 [details] > Patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=429795&action=review > > > Source/WTF/wtf/CryptographicUtilities.cpp:33 > > NEVER_INLINE int constantTimeMemcmp(const void* voidA, const void* voidB, size_t length) > > This wrapper that's in a different dylib and forces no inlining is slightly > wasteful when calling the system API. Perhaps implement the system API path > in the header? Sure, I can do that. I actually had hesitated to do that. I'll follow-up. 1764154 9 cdumez 2021-05-26 18:01:44 -0700 Reopening to attach new patch. 1764155 10 429821 cdumez 2021-05-26 18:01:45 -0700 Created attachment 429821 Patch 1764167 11 ews-feeder 2021-05-26 18:49:02 -0700 Committed r278144 (238188@main): <https://commits.webkit.org/238188@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 429821. 1765039 12 sam 2021-05-28 17:50:13 -0700 This should probably use a new HAVE macro. 1765040 13 cdumez 2021-05-28 17:51:15 -0700 (In reply to Sam Weinig from comment #12) > This should probably use a new HAVE macro. It's there, don't you see it? http://trac.webkit.org/r278178 :D 1765215 14 sam 2021-05-30 09:57:07 -0700 (In reply to Chris Dumez from comment #13) > (In reply to Sam Weinig from comment #12) > > This should probably use a new HAVE macro. > > It's there, don't you see it? http://trac.webkit.org/r278178 :D Great! 429795 2021-05-26 14:28:28 -0700 2021-05-26 18:01:41 -0700 Patch bug-226294-20210526142827.patch text/plain 1828 cdumez U3VidmVyc2lvbiBSZXZpc2lvbjogMjc4MTIzCmRpZmYgLS1naXQgYS9Tb3VyY2UvV1RGL0NoYW5n ZUxvZyBiL1NvdXJjZS9XVEYvQ2hhbmdlTG9nCmluZGV4IDE1ZGY5MWU5NzVmMjkyMGFlNmFiZjk4 MWIzYjBmMjFiNzljZWQ0M2IuLmMxMTUxNTg2Yjc0ZDU1M2M3MTllYTdhODIyZDY0ZmM1YWFkMDQw NzggMTAwNjQ0Ci0tLSBhL1NvdXJjZS9XVEYvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9XVEYvQ2hh bmdlTG9nCkBAIC0xLDMgKzEsMTYgQEAKKzIwMjEtMDUtMjYgIENocmlzIER1bWV6ICA8Y2R1bWV6 QGFwcGxlLmNvbT4KKworICAgICAgICBVc2UgdGltaW5nc2FmZV9iY21wKCkgaW4gV1RGOjpjb25z dGFudFRpbWVNZW1jbXAoKSB3aGVuIGF2YWlsYWJsZQorICAgICAgICBodHRwczovL2J1Z3Mud2Vi 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