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openssl: disable HT sidechannel attack mitigation 

It used to be off before. It's extremely unlikely that such an attack
would be a viable attack against node. And it makes AES much slower.
pull/24504/head
Bert Belder 2012-09-21 18:07:08 +02:00
parent aeae22cbb2
commit 1d97db5acf
2 changed files with 4 additions and 4 deletions
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4
deps/openssl/openssl/crypto/aes/asm/aes-586.pl vendored
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@ -2054,8 +2054,8 @@ my $mark=&DWP(76+240,"esp"); # copy of aes_key->rounds
&test ($s2,15); &test ($s2,15);
&jnz (&label("slow_way")); &jnz (&label("slow_way"));
if (!$x86only) { if (!$x86only) {
&bt (&DWP(0,$s0),28); # check for hyper-threading bit #&bt (&DWP(0,$s0),28); # check for hyper-threading bit
&jc (&label("slow_way")); #&jc (&label("slow_way"));
} }
# pre-allocate aligned stack frame... # pre-allocate aligned stack frame...
&lea ($acc,&DWP(-80-244,"esp")); &lea ($acc,&DWP(-80-244,"esp"));

4
deps/openssl/openssl/crypto/aes/asm/aes-x86_64.pl vendored
View File

@ -1683,8 +1683,8 @@ AES_cbc_encrypt:
jb .Lcbc_slow_prologue jb .Lcbc_slow_prologue
test \$15,%rdx test \$15,%rdx
jnz .Lcbc_slow_prologue jnz .Lcbc_slow_prologue
bt \$28,%r10d #bt \$28,%r10d
jc .Lcbc_slow_prologue #jc .Lcbc_slow_prologue
# allocate aligned stack frame... # allocate aligned stack frame...
lea -88-248(%rsp),$key lea -88-248(%rsp),$key