diff options
Diffstat (limited to 'crypto/bn/bn_sqr.c')
| -rw-r--r-- | crypto/bn/bn_sqr.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/crypto/bn/bn_sqr.c b/crypto/bn/bn_sqr.c index 65bbf165d0..b1b6f9b0a2 100644 --- a/crypto/bn/bn_sqr.c +++ b/crypto/bn/bn_sqr.c @@ -194,7 +194,8 @@ void bn_sqr_normal(BN_ULONG *r, const BN_ULONG *a, int n, BN_ULONG *tmp) } #ifdef BN_RECURSION -/* r is 2*n words in size, +/*- + * r is 2*n words in size, * a and b are both n words in size. (There's not actually a 'b' here ...) * n must be a power of 2. * We multiply and return the result. @@ -256,7 +257,8 @@ void bn_sqr_recursive(BN_ULONG *r, const BN_ULONG *a, int n2, BN_ULONG *t) bn_sqr_recursive(r,a,n,p); bn_sqr_recursive(&(r[n2]),&(a[n]),n,p); - /* t[32] holds (a[0]-a[1])*(a[1]-a[0]), it is negative or zero + /*- + * t[32] holds (a[0]-a[1])*(a[1]-a[0]), it is negative or zero * r[10] holds (a[0]*b[0]) * r[32] holds (b[1]*b[1]) */ @@ -266,7 +268,8 @@ void bn_sqr_recursive(BN_ULONG *r, const BN_ULONG *a, int n2, BN_ULONG *t) /* t[32] is negative */ c1-=(int)(bn_sub_words(&(t[n2]),t,&(t[n2]),n2)); - /* t[32] holds (a[0]-a[1])*(a[1]-a[0])+(a[0]*a[0])+(a[1]*a[1]) + /*- + * t[32] holds (a[0]-a[1])*(a[1]-a[0])+(a[0]*a[0])+(a[1]*a[1]) * r[10] holds (a[0]*a[0]) * r[32] holds (a[1]*a[1]) * c1 holds the carry bits |