* cipher/cipher-xts.c (xts_gfmul_byA): Generate mask with const-time helper. --
Signed-off-by: Jussi Kivilinna <[email protected]> --- cipher/cipher-xts.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/cipher/cipher-xts.c b/cipher/cipher-xts.c index 754f289c..6c684263 100644 --- a/cipher/cipher-xts.c +++ b/cipher/cipher-xts.c @@ -33,7 +33,7 @@ static inline void xts_gfmul_byA (unsigned char *out, const unsigned char *in) { u64 hi = buf_get_le64 (in + 8); u64 lo = buf_get_le64 (in + 0); - u64 carry = -(hi >> 63) & 0x87; + u64 carry = ct_ulong_gen_mask(hi >> 63) & 0x87; hi = (hi << 1) + (lo >> 63); lo = (lo << 1) ^ carry; -- 2.48.1 _______________________________________________ Gcrypt-devel mailing list [email protected] https://lists.gnupg.org/mailman/listinfo/gcrypt-devel
