Loading crypto/bn/bn_exp.c +8 −0 Original line number Diff line number Diff line Loading @@ -527,6 +527,14 @@ static int MOD_EXP_CTIME_COPY_FROM_PREBUF(BIGNUM *b, int top, { int i, j; int width = 1 << window; /* * We declare table 'volatile' in order to discourage compiler * from reordering loads from the table. Concern is that if * reordered in specific manner loads might give away the * information we are trying to conceal. Some would argue that * compiler can reorder them anyway, but it can as well be * argued that doing so would be violation of standard... */ volatile BN_ULONG *table = (volatile BN_ULONG *)buf; if (bn_wexpand(b, top) == NULL) Loading Loading
crypto/bn/bn_exp.c +8 −0 Original line number Diff line number Diff line Loading @@ -527,6 +527,14 @@ static int MOD_EXP_CTIME_COPY_FROM_PREBUF(BIGNUM *b, int top, { int i, j; int width = 1 << window; /* * We declare table 'volatile' in order to discourage compiler * from reordering loads from the table. Concern is that if * reordered in specific manner loads might give away the * information we are trying to conceal. Some would argue that * compiler can reorder them anyway, but it can as well be * argued that doing so would be violation of standard... */ volatile BN_ULONG *table = (volatile BN_ULONG *)buf; if (bn_wexpand(b, top) == NULL) Loading
Tim Hudson <tjh@openssl.org>Tim Hudson <tjh@openssl.org>