engines/ccgost/gost2001_keyx.c:46: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 1):unsigned64 by call to `EC_POINT_mul`.
Showing all 14 steps of the trace


engines/ccgost/gost2001_keyx.c:45:2: Call
43.   	Y=BN_CTX_get(ctx);
44.   	EC_GROUP_get_order(EC_KEY_get0_group(priv_key),order,ctx);
45.   	BN_mod_mul(p,key,UKM,order,ctx);	
       ^
46.   	EC_POINT_mul(EC_KEY_get0_group(priv_key),pnt,NULL,pub_key,p,ctx);
47.   	EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(priv_key),

crypto/bn/bn_mod.c:194:7: Call
  192.   	else
  193.   		{ if (!BN_mul(t,a,b,ctx)) goto err; }
  194.   	if (!BN_nnmod(r,t,m,ctx)) goto err;
               ^
  195.   	bn_check_top(r);
  196.   	ret=1;

crypto/bn/bn_mod.c:132:8: Call
    130.   	 * (i.e.,  0 <= r < |d|  always holds) */
    131.   
    132.   	if (!(BN_mod(r,m,d,ctx)))
                  ^
    133.   		return 0;
    134.   	if (!r->neg)

crypto/bn/bn_div.c:181:1: Parameter `dv->top`
      179.   static int BN_div_no_branch(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num,
      180.           const BIGNUM *divisor, BN_CTX *ctx);
      181. > int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,
      182.   	   BN_CTX *ctx)
      183.   	{

engines/ccgost/gost2001_keyx.c:46:2: Call
44.   	EC_GROUP_get_order(EC_KEY_get0_group(priv_key),order,ctx);
45.   	BN_mod_mul(p,key,UKM,order,ctx);	
46.   	EC_POINT_mul(EC_KEY_get0_group(priv_key),pnt,NULL,pub_key,p,ctx);
       ^
47.   	EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(priv_key),
48.   		pnt,X,Y,ctx);

crypto/ec/ec_lib.c:1128:1: Parameter `g_scalar->top`
  1126.   	}
  1127.   
  1128. > int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *g_scalar,
  1129.   	const EC_POINT *point, const BIGNUM *p_scalar, BN_CTX *ctx)
  1130.   	{

crypto/ec/ec_lib.c:1139:9: Call
  1137.   	scalars[0] = p_scalar;
  1138.   
  1139.   	return EC_POINTs_mul(group, r, g_scalar, (point != NULL && p_scalar != NULL), points, scalars, ctx);
                  ^
  1140.   	}
  1141.   

crypto/ec/ec_lib.c:1118:1: Parameter `scalar->top`
    1116.    */
    1117.   
    1118. > int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar,
    1119.   	size_t num, const EC_POINT *points[], const BIGNUM *scalars[], BN_CTX *ctx)
    1120.   	{

crypto/ec/ec_lib.c:1123:10: Call
    1121.   	if (group->meth->mul == 0)
    1122.   		/* use default */
    1123.   		return ec_wNAF_mul(group, r, scalar, num, points, scalars, ctx);
                     ^
    1124.   
    1125.   	return group->meth->mul(group, r, scalar, num, points, scalars, ctx);

crypto/ec/ec_mult.c:344:1: Parameter `scalar->top`
      342.    * in the addition if scalar != NULL
      343.    */
      344. > int ec_wNAF_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar,
      345.   	size_t num, const EC_POINT *points[], const BIGNUM *scalars[], BN_CTX *ctx)
      346.   	{

crypto/ec/ec_mult.c:416:17: Call
      414.   			/* determine maximum number of blocks that wNAF splitting may yield
      415.   			 * (NB: maximum wNAF length is bit length plus one) */
      416.   			numblocks = (BN_num_bits(scalar) / blocksize) + 1;
                             ^
      417.   
      418.   			/* we cannot use more blocks than we have precomputation for */

crypto/bn/bn_lib.c:248:1: <LHS trace>
246.   	}
247.   
248. > int BN_num_bits(const BIGNUM *a)
249.   	{
250.   	int i = a->top - 1;

crypto/bn/bn_lib.c:248:1: Parameter `a->top`
        246.   	}
        247.   
        248. > int BN_num_bits(const BIGNUM *a)
        249.   	{
        250.   	int i = a->top - 1;

crypto/bn/bn_lib.c:250:2: Binary operation: ([0, +oo] - 1):unsigned64 by call to `EC_POINT_mul` 
        248.   int BN_num_bits(const BIGNUM *a)
        249.   	{
        250.   	int i = a->top - 1;
                ^
        251.   	bn_check_top(a);
        252.   

int BN_num_bits(const BIGNUM *a)
	{
	int i = a->top - 1;
	bn_check_top(a);
	if (BN_is_zero(a)) return 0;
	return ((i*BN_BITS2) + BN_num_bits_word(a->d[i]));
	}
['static int VKO_compute_key(unsigned char *shared_key,size_t shared_key_size,const EC_POINT *pub_key,EC_KEY *priv_key,const unsigned char *ukm)\n\t{\n\tunsigned char ukm_be[8],databuf[64],hashbuf[64];\n\tBIGNUM *UKM=NULL,*p=NULL,*order=NULL,*X=NULL,*Y=NULL;\n\tconst BIGNUM* key=EC_KEY_get0_private_key(priv_key);\n\tEC_POINT *pnt=EC_POINT_new(EC_KEY_get0_group(priv_key));\n\tint i;\n\tgost_hash_ctx hash_ctx;\n\tBN_CTX *ctx = BN_CTX_new();\n\tfor (i=0;i<8;i++)\n\t\t{\n\t\tukm_be[7-i]=ukm[i];\n\t\t}\n\tBN_CTX_start(ctx);\n\tUKM=getbnfrombuf(ukm_be,8);\n\tp=BN_CTX_get(ctx);\n\torder = BN_CTX_get(ctx);\n\tX=BN_CTX_get(ctx);\n\tY=BN_CTX_get(ctx);\n\tEC_GROUP_get_order(EC_KEY_get0_group(priv_key),order,ctx);\n\tBN_mod_mul(p,key,UKM,order,ctx);\n\tEC_POINT_mul(EC_KEY_get0_group(priv_key),pnt,NULL,pub_key,p,ctx);\n\tEC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(priv_key),\n\t\tpnt,X,Y,ctx);\n\tstore_bignum(Y,databuf,32);\n\tstore_bignum(X,databuf+32,32);\n\tfor (i=0;i<64;i++)\n\t\t{\n\t\thashbuf[63-i]=databuf[i];\n\t\t}\n\tinit_gost_hash_ctx(&hash_ctx,&GostR3411_94_CryptoProParamSet);\n\tstart_hash(&hash_ctx);\n\thash_block(&hash_ctx,hashbuf,64);\n\tfinish_hash(&hash_ctx,shared_key);\n\tdone_gost_hash_ctx(&hash_ctx);\n\tBN_free(UKM);\n\tBN_CTX_end(ctx);\n\tBN_CTX_free(ctx);\n\tEC_POINT_free(pnt);\n\treturn 32;\n\t}', 'int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,\n\tBN_CTX *ctx)\n\t{\n\tBIGNUM *t;\n\tint ret=0;\n\tbn_check_top(a);\n\tbn_check_top(b);\n\tbn_check_top(m);\n\tBN_CTX_start(ctx);\n\tif ((t = BN_CTX_get(ctx)) == NULL) goto err;\n\tif (a == b)\n\t\t{ if (!BN_sqr(t,a,ctx)) goto err; }\n\telse\n\t\t{ if (!BN_mul(t,a,b,ctx)) goto err; }\n\tif (!BN_nnmod(r,t,m,ctx)) goto err;\n\tbn_check_top(r);\n\tret=1;\nerr:\n\tBN_CTX_end(ctx);\n\treturn(ret);\n\t}', 'int BN_nnmod(BIGNUM *r, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx)\n\t{\n\tif (!(BN_mod(r,m,d,ctx)))\n\t\treturn 0;\n\tif (!r->neg)\n\t\treturn 1;\n\treturn (d->neg ? BN_sub : BN_add)(r, r, d);\n}', 'int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,\n\t   BN_CTX *ctx)\n\t{\n\tint norm_shift,i;\n\tsize_t loop;\n\tBIGNUM *tmp,wnum,*snum,*sdiv,*res;\n\tBN_ULONG *resp,*wnump;\n\tBN_ULONG d0,d1;\n\tsize_t num_n,div_n;\n\tif (num->top > 0 && num->d[num->top - 1] == 0)\n\t\t{\n\t\tBNerr(BN_F_BN_DIV,BN_R_NOT_INITIALIZED);\n\t\treturn 0;\n\t\t}\n\tbn_check_top(num);\n\tif ((BN_get_flags(num, BN_FLG_CONSTTIME) != 0) || (BN_get_flags(divisor, BN_FLG_CONSTTIME) != 0))\n\t\t{\n\t\treturn BN_div_no_branch(dv, rm, num, divisor, ctx);\n\t\t}\n\tbn_check_top(dv);\n\tbn_check_top(rm);\n\tbn_check_top(divisor);\n\tif (BN_is_zero(divisor))\n\t\t{\n\t\tBNerr(BN_F_BN_DIV,BN_R_DIV_BY_ZERO);\n\t\treturn(0);\n\t\t}\n\tif (BN_ucmp(num,divisor) < 0)\n\t\t{\n\t\tif (rm != NULL)\n\t\t\t{ if (BN_copy(rm,num) == NULL) return(0); }\n\t\tif (dv != NULL) BN_zero(dv);\n\t\treturn(1);\n\t\t}\n\tBN_CTX_start(ctx);\n\ttmp=BN_CTX_get(ctx);\n\tsnum=BN_CTX_get(ctx);\n\tsdiv=BN_CTX_get(ctx);\n\tif (dv == NULL)\n\t\tres=BN_CTX_get(ctx);\n\telse\tres=dv;\n\tif (sdiv == NULL || res == NULL) goto err;\n\tnorm_shift=BN_BITS2-((BN_num_bits(divisor))%BN_BITS2);\n\tif (!(BN_lshift(sdiv,divisor,norm_shift))) goto err;\n\tsdiv->neg=0;\n\tnorm_shift+=BN_BITS2;\n\tif (!(BN_lshift(snum,num,norm_shift))) goto err;\n\tsnum->neg=0;\n\tdiv_n=sdiv->top;\n\tnum_n=snum->top;\n\tloop=num_n-div_n;\n\twnum.neg   = 0;\n\twnum.d     = &(snum->d[loop]);\n\twnum.top   = div_n;\n\twnum.dmax  = snum->dmax - loop;\n\td0=sdiv->d[div_n-1];\n\td1=(div_n == 1)?0:sdiv->d[div_n-2];\n\twnump= &(snum->d[num_n-1]);\n\tres->neg= (num->neg^divisor->neg);\n\tif (!bn_wexpand(res,(loop+1))) goto err;\n\tres->top=loop;\n\tresp= &(res->d[loop-1]);\n\tif (!bn_wexpand(tmp, div_n+1)) goto err;\n\tif (BN_ucmp(&wnum,sdiv) >= 0)\n\t\t{\n\t\tbn_clear_top2max(&wnum);\n\t\tbn_sub_words(wnum.d, wnum.d, sdiv->d, div_n);\n\t\t*resp=1;\n\t\t}\n\telse\n\t\tres->top--;\n\tif (res->top == 0)\n\t\tres->neg = 0;\n\telse\n\t\tresp--;\n\tfor (i=0; i<loop-1; i++, wnump--, resp--)\n\t\t{\n\t\tBN_ULONG q,l0;\n#if defined(BN_DIV3W) && !defined(OPENSSL_NO_ASM)\n\t\tBN_ULONG bn_div_3_words(BN_ULONG*,BN_ULONG,BN_ULONG);\n\t\tq=bn_div_3_words(wnump,d1,d0);\n#else\n\t\tBN_ULONG n0,n1,rem=0;\n\t\tn0=wnump[0];\n\t\tn1=wnump[-1];\n\t\tif (n0 == d0)\n\t\t\tq=BN_MASK2;\n\t\telse\n\t\t\t{\n#ifdef BN_LLONG\n\t\t\tBN_ULLONG t2;\n#if defined(BN_LLONG) && defined(BN_DIV2W) && !defined(bn_div_words)\n\t\t\tq=(BN_ULONG)(((((BN_ULLONG)n0)<<BN_BITS2)|n1)/d0);\n#else\n\t\t\tq=bn_div_words(n0,n1,d0);\n#ifdef BN_DEBUG_LEVITTE\n\t\t\tfprintf(stderr,"DEBUG: bn_div_words(0x%08X,0x%08X,0x%08\\\nX) -> 0x%08X\\n",\n\t\t\t\tn0, n1, d0, q);\n#endif\n#endif\n#ifndef REMAINDER_IS_ALREADY_CALCULATED\n\t\t\trem=(n1-q*d0)&BN_MASK2;\n#endif\n\t\t\tt2=(BN_ULLONG)d1*q;\n\t\t\tfor (;;)\n\t\t\t\t{\n\t\t\t\tif (t2 <= ((((BN_ULLONG)rem)<<BN_BITS2)|wnump[-2]))\n\t\t\t\t\tbreak;\n\t\t\t\tq--;\n\t\t\t\trem += d0;\n\t\t\t\tif (rem < d0) break;\n\t\t\t\tt2 -= d1;\n\t\t\t\t}\n#else\n\t\t\tBN_ULONG t2l,t2h;\n\t\t\tq=bn_div_words(n0,n1,d0);\n#ifdef BN_DEBUG_LEVITTE\n\t\t\tfprintf(stderr,"DEBUG: bn_div_words(0x%08X,0x%08X,0x%08\\\nX) -> 0x%08X\\n",\n\t\t\t\tn0, n1, d0, q);\n#endif\n#ifndef REMAINDER_IS_ALREADY_CALCULATED\n\t\t\trem=(n1-q*d0)&BN_MASK2;\n#endif\n#if defined(BN_UMULT_LOHI)\n\t\t\tBN_UMULT_LOHI(t2l,t2h,d1,q);\n#elif defined(BN_UMULT_HIGH)\n\t\t\tt2l = d1 * q;\n\t\t\tt2h = BN_UMULT_HIGH(d1,q);\n#else\n\t\t\t{\n\t\t\tBN_ULONG ql, qh;\n\t\t\tt2l=LBITS(d1); t2h=HBITS(d1);\n\t\t\tql =LBITS(q);  qh =HBITS(q);\n\t\t\tmul64(t2l,t2h,ql,qh);\n\t\t\t}\n#endif\n\t\t\tfor (;;)\n\t\t\t\t{\n\t\t\t\tif ((t2h < rem) ||\n\t\t\t\t\t((t2h == rem) && (t2l <= wnump[-2])))\n\t\t\t\t\tbreak;\n\t\t\t\tq--;\n\t\t\t\trem += d0;\n\t\t\t\tif (rem < d0) break;\n\t\t\t\tif (t2l < d1) t2h--; t2l -= d1;\n\t\t\t\t}\n#endif\n\t\t\t}\n#endif\n\t\tl0=bn_mul_words(tmp->d,sdiv->d,div_n,q);\n\t\ttmp->d[div_n]=l0;\n\t\twnum.d--;\n\t\tif (bn_sub_words(wnum.d, wnum.d, tmp->d, div_n+1))\n\t\t\t{\n\t\t\tq--;\n\t\t\tif (bn_add_words(wnum.d, wnum.d, sdiv->d, div_n))\n\t\t\t\t(*wnump)++;\n\t\t\t}\n\t\t*resp = q;\n\t\t}\n\tbn_correct_top(snum);\n\tif (rm != NULL)\n\t\t{\n\t\tint neg = num->neg;\n\t\tBN_rshift(rm,snum,norm_shift);\n\t\tif (!BN_is_zero(rm))\n\t\t\trm->neg = neg;\n\t\tbn_check_top(rm);\n\t\t}\n\tBN_CTX_end(ctx);\n\treturn(1);\nerr:\n\tbn_check_top(rm);\n\tBN_CTX_end(ctx);\n\treturn(0);\n\t}', 'int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *g_scalar,\n\tconst EC_POINT *point, const BIGNUM *p_scalar, BN_CTX *ctx)\n\t{\n\tconst EC_POINT *points[1];\n\tconst BIGNUM *scalars[1];\n\tpoints[0] = point;\n\tscalars[0] = p_scalar;\n\treturn EC_POINTs_mul(group, r, g_scalar, (point != NULL && p_scalar != NULL), points, scalars, ctx);\n\t}', 'int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar,\n\tsize_t num, const EC_POINT *points[], const BIGNUM *scalars[], BN_CTX *ctx)\n\t{\n\tif (group->meth->mul == 0)\n\t\treturn ec_wNAF_mul(group, r, scalar, num, points, scalars, ctx);\n\treturn group->meth->mul(group, r, scalar, num, points, scalars, ctx);\n\t}', 'int ec_wNAF_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar,\n\tsize_t num, const EC_POINT *points[], const BIGNUM *scalars[], BN_CTX *ctx)\n\t{\n\tBN_CTX *new_ctx = NULL;\n\tconst EC_POINT *generator = NULL;\n\tEC_POINT *tmp = NULL;\n\tsize_t totalnum;\n\tsize_t blocksize = 0, numblocks = 0;\n\tsize_t pre_points_per_block = 0;\n\tsize_t i, j;\n\tint k;\n\tint r_is_inverted = 0;\n\tint r_is_at_infinity = 1;\n\tsize_t *wsize = NULL;\n\tsigned char **wNAF = NULL;\n\tsize_t *wNAF_len = NULL;\n\tsize_t max_len = 0;\n\tsize_t num_val;\n\tEC_POINT **val = NULL;\n\tEC_POINT **v;\n\tEC_POINT ***val_sub = NULL;\n\tconst EC_PRE_COMP *pre_comp = NULL;\n\tint num_scalar = 0;\n\tint ret = 0;\n\tif (group->meth != r->meth)\n\t\t{\n\t\tECerr(EC_F_EC_WNAF_MUL, EC_R_INCOMPATIBLE_OBJECTS);\n\t\treturn 0;\n\t\t}\n\tif ((scalar == NULL) && (num == 0))\n\t\t{\n\t\treturn EC_POINT_set_to_infinity(group, r);\n\t\t}\n\tfor (i = 0; i < num; i++)\n\t\t{\n\t\tif (group->meth != points[i]->meth)\n\t\t\t{\n\t\t\tECerr(EC_F_EC_WNAF_MUL, EC_R_INCOMPATIBLE_OBJECTS);\n\t\t\treturn 0;\n\t\t\t}\n\t\t}\n\tif (ctx == NULL)\n\t\t{\n\t\tctx = new_ctx = BN_CTX_new();\n\t\tif (ctx == NULL)\n\t\t\tgoto err;\n\t\t}\n\tif (scalar != NULL)\n\t\t{\n\t\tgenerator = EC_GROUP_get0_generator(group);\n\t\tif (generator == NULL)\n\t\t\t{\n\t\t\tECerr(EC_F_EC_WNAF_MUL, EC_R_UNDEFINED_GENERATOR);\n\t\t\tgoto err;\n\t\t\t}\n\t\tpre_comp = EC_EX_DATA_get_data(group->extra_data, ec_pre_comp_dup, ec_pre_comp_free, ec_pre_comp_clear_free);\n\t\tif (pre_comp && pre_comp->numblocks && (EC_POINT_cmp(group, generator, pre_comp->points[0], ctx) == 0))\n\t\t\t{\n\t\t\tblocksize = pre_comp->blocksize;\n\t\t\tnumblocks = (BN_num_bits(scalar) / blocksize) + 1;\n\t\t\tif (numblocks > pre_comp->numblocks)\n\t\t\t\tnumblocks = pre_comp->numblocks;\n\t\t\tpre_points_per_block = 1u << (pre_comp->w - 1);\n\t\t\tif (pre_comp->num != (pre_comp->numblocks * pre_points_per_block))\n\t\t\t\t{\n\t\t\t\tECerr(EC_F_EC_WNAF_MUL, ERR_R_INTERNAL_ERROR);\n\t\t\t\tgoto err;\n\t\t\t\t}\n\t\t\t}\n\t\telse\n\t\t\t{\n\t\t\tpre_comp = NULL;\n\t\t\tnumblocks = 1;\n\t\t\tnum_scalar = 1;\n\t\t\t}\n\t\t}\n\ttotalnum = num + numblocks;\n\twsize    = OPENSSL_malloc(totalnum * sizeof wsize[0]);\n\twNAF_len = OPENSSL_malloc(totalnum * sizeof wNAF_len[0]);\n\twNAF     = OPENSSL_malloc((totalnum + 1) * sizeof wNAF[0]);\n\tval_sub  = OPENSSL_malloc(totalnum * sizeof val_sub[0]);\n\tif (!wsize || !wNAF_len || !wNAF || !val_sub)\n\t\t{\n\t\tECerr(EC_F_EC_WNAF_MUL, ERR_R_MALLOC_FAILURE);\n\t\tgoto err;\n\t\t}\n\twNAF[0] = NULL;\n\tnum_val = 0;\n\tfor (i = 0; i < num + num_scalar; i++)\n\t\t{\n\t\tsize_t bits;\n\t\tbits = i < num ? BN_num_bits(scalars[i]) : BN_num_bits(scalar);\n\t\twsize[i] = EC_window_bits_for_scalar_size(bits);\n\t\tnum_val += 1u << (wsize[i] - 1);\n\t\twNAF[i + 1] = NULL;\n\t\twNAF[i] = compute_wNAF((i < num ? scalars[i] : scalar), wsize[i], &wNAF_len[i]);\n\t\tif (wNAF[i] == NULL)\n\t\t\tgoto err;\n\t\tif (wNAF_len[i] > max_len)\n\t\t\tmax_len = wNAF_len[i];\n\t\t}\n\tif (numblocks)\n\t\t{\n\t\tif (pre_comp == NULL)\n\t\t\t{\n\t\t\tif (num_scalar != 1)\n\t\t\t\t{\n\t\t\t\tECerr(EC_F_EC_WNAF_MUL, ERR_R_INTERNAL_ERROR);\n\t\t\t\tgoto err;\n\t\t\t\t}\n\t\t\t}\n\t\telse\n\t\t\t{\n\t\t\tsigned char *tmp_wNAF = NULL;\n\t\t\tsize_t tmp_len = 0;\n\t\t\tif (num_scalar != 0)\n\t\t\t\t{\n\t\t\t\tECerr(EC_F_EC_WNAF_MUL, ERR_R_INTERNAL_ERROR);\n\t\t\t\tgoto err;\n\t\t\t\t}\n\t\t\twsize[num] = pre_comp->w;\n\t\t\ttmp_wNAF = compute_wNAF(scalar, wsize[num], &tmp_len);\n\t\t\tif (!tmp_wNAF)\n\t\t\t\tgoto err;\n\t\t\tif (tmp_len <= max_len)\n\t\t\t\t{\n\t\t\t\tnumblocks = 1;\n\t\t\t\ttotalnum = num + 1;\n\t\t\t\twNAF[num] = tmp_wNAF;\n\t\t\t\twNAF[num + 1] = NULL;\n\t\t\t\twNAF_len[num] = tmp_len;\n\t\t\t\tif (tmp_len > max_len)\n\t\t\t\t\tmax_len = tmp_len;\n\t\t\t\tval_sub[num] = pre_comp->points;\n\t\t\t\t}\n\t\t\telse\n\t\t\t\t{\n\t\t\t\tsigned char *pp;\n\t\t\t\tEC_POINT **tmp_points;\n\t\t\t\tif (tmp_len < numblocks * blocksize)\n\t\t\t\t\t{\n\t\t\t\t\tnumblocks = (tmp_len + blocksize - 1) / blocksize;\n\t\t\t\t\tif (numblocks > pre_comp->numblocks)\n\t\t\t\t\t\t{\n\t\t\t\t\t\tECerr(EC_F_EC_WNAF_MUL, ERR_R_INTERNAL_ERROR);\n\t\t\t\t\t\tgoto err;\n\t\t\t\t\t\t}\n\t\t\t\t\ttotalnum = num + numblocks;\n\t\t\t\t\t}\n\t\t\t\tpp = tmp_wNAF;\n\t\t\t\ttmp_points = pre_comp->points;\n\t\t\t\tfor (i = num; i < totalnum; i++)\n\t\t\t\t\t{\n\t\t\t\t\tif (i < totalnum - 1)\n\t\t\t\t\t\t{\n\t\t\t\t\t\twNAF_len[i] = blocksize;\n\t\t\t\t\t\tif (tmp_len < blocksize)\n\t\t\t\t\t\t\t{\n\t\t\t\t\t\t\tECerr(EC_F_EC_WNAF_MUL, ERR_R_INTERNAL_ERROR);\n\t\t\t\t\t\t\tgoto err;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\ttmp_len -= blocksize;\n\t\t\t\t\t\t}\n\t\t\t\t\telse\n\t\t\t\t\t\twNAF_len[i] = tmp_len;\n\t\t\t\t\twNAF[i + 1] = NULL;\n\t\t\t\t\twNAF[i] = OPENSSL_malloc(wNAF_len[i]);\n\t\t\t\t\tif (wNAF[i] == NULL)\n\t\t\t\t\t\t{\n\t\t\t\t\t\tECerr(EC_F_EC_WNAF_MUL, ERR_R_MALLOC_FAILURE);\n\t\t\t\t\t\tOPENSSL_free(tmp_wNAF);\n\t\t\t\t\t\tgoto err;\n\t\t\t\t\t\t}\n\t\t\t\t\tmemcpy(wNAF[i], pp, wNAF_len[i]);\n\t\t\t\t\tif (wNAF_len[i] > max_len)\n\t\t\t\t\t\tmax_len = wNAF_len[i];\n\t\t\t\t\tif (*tmp_points == NULL)\n\t\t\t\t\t\t{\n\t\t\t\t\t\tECerr(EC_F_EC_WNAF_MUL, ERR_R_INTERNAL_ERROR);\n\t\t\t\t\t\tOPENSSL_free(tmp_wNAF);\n\t\t\t\t\t\tgoto err;\n\t\t\t\t\t\t}\n\t\t\t\t\tval_sub[i] = tmp_points;\n\t\t\t\t\ttmp_points += pre_points_per_block;\n\t\t\t\t\tpp += blocksize;\n\t\t\t\t\t}\n\t\t\t\tOPENSSL_free(tmp_wNAF);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\tval = OPENSSL_malloc((num_val + 1) * sizeof val[0]);\n\tif (val == NULL)\n\t\t{\n\t\tECerr(EC_F_EC_WNAF_MUL, ERR_R_MALLOC_FAILURE);\n\t\tgoto err;\n\t\t}\n\tval[num_val] = NULL;\n\tv = val;\n\tfor (i = 0; i < num + num_scalar; i++)\n\t\t{\n\t\tval_sub[i] = v;\n\t\tfor (j = 0; j < (1u << (wsize[i] - 1)); j++)\n\t\t\t{\n\t\t\t*v = EC_POINT_new(group);\n\t\t\tif (*v == NULL) goto err;\n\t\t\tv++;\n\t\t\t}\n\t\t}\n\tif (!(v == val + num_val))\n\t\t{\n\t\tECerr(EC_F_EC_WNAF_MUL, ERR_R_INTERNAL_ERROR);\n\t\tgoto err;\n\t\t}\n\tif (!(tmp = EC_POINT_new(group)))\n\t\tgoto err;\n\tfor (i = 0; i < num + num_scalar; i++)\n\t\t{\n\t\tif (i < num)\n\t\t\t{\n\t\t\tif (!EC_POINT_copy(val_sub[i][0], points[i])) goto err;\n\t\t\t}\n\t\telse\n\t\t\t{\n\t\t\tif (!EC_POINT_copy(val_sub[i][0], generator)) goto err;\n\t\t\t}\n\t\tif (wsize[i] > 1)\n\t\t\t{\n\t\t\tif (!EC_POINT_dbl(group, tmp, val_sub[i][0], ctx)) goto err;\n\t\t\tfor (j = 1; j < (1u << (wsize[i] - 1)); j++)\n\t\t\t\t{\n\t\t\t\tif (!EC_POINT_add(group, val_sub[i][j], val_sub[i][j - 1], tmp, ctx)) goto err;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n#if 1\n\tif (!EC_POINTs_make_affine(group, num_val, val, ctx))\n\t\tgoto err;\n#endif\n\tr_is_at_infinity = 1;\n\tfor (k = max_len - 1; k >= 0; k--)\n\t\t{\n\t\tif (!r_is_at_infinity)\n\t\t\t{\n\t\t\tif (!EC_POINT_dbl(group, r, r, ctx)) goto err;\n\t\t\t}\n\t\tfor (i = 0; i < totalnum; i++)\n\t\t\t{\n\t\t\tif (wNAF_len[i] > (size_t)k)\n\t\t\t\t{\n\t\t\t\tint digit = wNAF[i][k];\n\t\t\t\tint is_neg;\n\t\t\t\tif (digit)\n\t\t\t\t\t{\n\t\t\t\t\tis_neg = digit < 0;\n\t\t\t\t\tif (is_neg)\n\t\t\t\t\t\tdigit = -digit;\n\t\t\t\t\tif (is_neg != r_is_inverted)\n\t\t\t\t\t\t{\n\t\t\t\t\t\tif (!r_is_at_infinity)\n\t\t\t\t\t\t\t{\n\t\t\t\t\t\t\tif (!EC_POINT_invert(group, r, ctx)) goto err;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\tr_is_inverted = !r_is_inverted;\n\t\t\t\t\t\t}\n\t\t\t\t\tif (r_is_at_infinity)\n\t\t\t\t\t\t{\n\t\t\t\t\t\tif (!EC_POINT_copy(r, val_sub[i][digit >> 1])) goto err;\n\t\t\t\t\t\tr_is_at_infinity = 0;\n\t\t\t\t\t\t}\n\t\t\t\t\telse\n\t\t\t\t\t\t{\n\t\t\t\t\t\tif (!EC_POINT_add(group, r, r, val_sub[i][digit >> 1], ctx)) goto err;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\tif (r_is_at_infinity)\n\t\t{\n\t\tif (!EC_POINT_set_to_infinity(group, r)) goto err;\n\t\t}\n\telse\n\t\t{\n\t\tif (r_is_inverted)\n\t\t\tif (!EC_POINT_invert(group, r, ctx)) goto err;\n\t\t}\n\tret = 1;\n err:\n\tif (new_ctx != NULL)\n\t\tBN_CTX_free(new_ctx);\n\tif (tmp != NULL)\n\t\tEC_POINT_free(tmp);\n\tif (wsize != NULL)\n\t\tOPENSSL_free(wsize);\n\tif (wNAF_len != NULL)\n\t\tOPENSSL_free(wNAF_len);\n\tif (wNAF != NULL)\n\t\t{\n\t\tsigned char **w;\n\t\tfor (w = wNAF; *w != NULL; w++)\n\t\t\tOPENSSL_free(*w);\n\t\tOPENSSL_free(wNAF);\n\t\t}\n\tif (val != NULL)\n\t\t{\n\t\tfor (v = val; *v != NULL; v++)\n\t\t\tEC_POINT_clear_free(*v);\n\t\tOPENSSL_free(val);\n\t\t}\n\tif (val_sub != NULL)\n\t\t{\n\t\tOPENSSL_free(val_sub);\n\t\t}\n\treturn ret;\n\t}', 'int BN_num_bits(const BIGNUM *a)\n\t{\n\tint i = a->top - 1;\n\tbn_check_top(a);\n\tif (BN_is_zero(a)) return 0;\n\treturn ((i*BN_BITS2) + BN_num_bits_word(a->d[i]));\n\t}']