diff options
Diffstat (limited to 'crypto/openssl/crypto/bn/bn_sqr.c')
-rw-r--r-- | crypto/openssl/crypto/bn/bn_sqr.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/crypto/openssl/crypto/bn/bn_sqr.c b/crypto/openssl/crypto/bn/bn_sqr.c index 12cce4d..fe00c5f 100644 --- a/crypto/openssl/crypto/bn/bn_sqr.c +++ b/crypto/openssl/crypto/bn/bn_sqr.c @@ -65,14 +65,13 @@ int BN_sqr(BIGNUM *r, BIGNUM *a, BN_CTX *ctx) { int max,al; + int ret = 0; BIGNUM *tmp,*rr; #ifdef BN_COUNT printf("BN_sqr %d * %d\n",a->top,a->top); #endif bn_check_top(a); - tmp= &(ctx->bn[ctx->tos]); - rr=(a != r)?r: (&ctx->bn[ctx->tos+1]); al=a->top; if (al <= 0) @@ -81,8 +80,13 @@ printf("BN_sqr %d * %d\n",a->top,a->top); return(1); } + BN_CTX_start(ctx); + rr=(a != r) ? r : BN_CTX_get(ctx); + tmp=BN_CTX_get(ctx); + if (tmp == NULL) goto err; + max=(al+al); - if (bn_wexpand(rr,max+1) == NULL) return(0); + if (bn_wexpand(rr,max+1) == NULL) goto err; r->neg=0; if (al == 4) @@ -120,18 +124,18 @@ printf("BN_sqr %d * %d\n",a->top,a->top); k=j+j; if (al == j) { - if (bn_wexpand(a,k*2) == NULL) return(0); - if (bn_wexpand(tmp,k*2) == NULL) return(0); + if (bn_wexpand(a,k*2) == NULL) goto err; + if (bn_wexpand(tmp,k*2) == NULL) goto err; bn_sqr_recursive(rr->d,a->d,al,tmp->d); } else { - if (bn_wexpand(tmp,max) == NULL) return(0); + if (bn_wexpand(tmp,max) == NULL) goto err; bn_sqr_normal(rr->d,a->d,al,tmp->d); } } #else - if (bn_wexpand(tmp,max) == NULL) return(0); + if (bn_wexpand(tmp,max) == NULL) goto err; bn_sqr_normal(rr->d,a->d,al,tmp->d); #endif } @@ -139,7 +143,10 @@ printf("BN_sqr %d * %d\n",a->top,a->top); rr->top=max; if ((max > 0) && (rr->d[max-1] == 0)) rr->top--; if (rr != r) BN_copy(r,rr); - return(1); + ret = 1; + err: + BN_CTX_end(ctx); + return(ret); } /* tmp must have 2*n words */ @@ -185,7 +192,7 @@ void bn_sqr_normal(BN_ULONG *r, BN_ULONG *a, int n, BN_ULONG *tmp) * n must be a power of 2. * We multiply and return the result. * t must be 2*n words in size - * We calulate + * We calculate * a[0]*b[0] * a[0]*b[0]+a[1]*b[1]+(a[0]-a[1])*(b[1]-b[0]) * a[1]*b[1] |