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Diffstat (limited to 'src/lib/libcrypto/bn/bn_gf2m.c')
-rw-r--r--src/lib/libcrypto/bn/bn_gf2m.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/lib/libcrypto/bn/bn_gf2m.c b/src/lib/libcrypto/bn/bn_gf2m.c
index 6a793857e1..306f029f27 100644
--- a/src/lib/libcrypto/bn/bn_gf2m.c
+++ b/src/lib/libcrypto/bn/bn_gf2m.c
@@ -384,7 +384,11 @@ int BN_GF2m_mod_arr(BIGNUM *r, const BIGNUM *a, const unsigned int p[])
384 if (zz == 0) break; 384 if (zz == 0) break;
385 d1 = BN_BITS2 - d0; 385 d1 = BN_BITS2 - d0;
386 386
387 if (d0) z[dN] = (z[dN] << d1) >> d1; /* clear up the top d1 bits */ 387 /* clear up the top d1 bits */
388 if (d0)
389 z[dN] = (z[dN] << d1) >> d1;
390 else
391 z[dN] = 0;
388 z[0] ^= zz; /* reduction t^0 component */ 392 z[0] ^= zz; /* reduction t^0 component */
389 393
390 for (k = 1; p[k] != 0; k++) 394 for (k = 1; p[k] != 0; k++)