* Originally written by Bodo Moeller and Nils Larsch for the OpenSSL project.
*/
/* ====================================================================
- * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
ret = (EC_PRE_COMP *)OPENSSL_malloc(sizeof(EC_PRE_COMP));
if (!ret)
+ {
+ ECerr(EC_F_EC_PRE_COMP_NEW, ERR_R_MALLOC_FAILURE);
return ret;
+ }
ret->group = group;
ret->blocksize = 8; /* default */
ret->numblocks = 0;
int bit, next_bit, mask;
size_t len = 0, j;
+ if (BN_is_zero(scalar))
+ {
+ r = OPENSSL_malloc(1);
+ if (!r)
+ {
+ ECerr(EC_F_COMPUTE_WNAF, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ r[0] = 0;
+ *ret_len = 1;
+ return r;
+ }
+
if (w <= 0 || w > 7) /* 'signed char' can represent integers with absolute values less than 2^7 */
{
ECerr(EC_F_COMPUTE_WNAF, ERR_R_INTERNAL_ERROR);
r = OPENSSL_malloc(len + 1); /* modified wNAF may be one digit longer than binary representation
* (*ret_len will be set to the actual length, i.e. at most
* BN_num_bits(scalar) + 1) */
- if (r == NULL) goto err;
+ if (r == NULL)
+ {
+ ECerr(EC_F_COMPUTE_WNAF, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
if (scalar->d == NULL || scalar->top == 0)
{
val_sub = OPENSSL_malloc(totalnum * sizeof val_sub[0]);
if (!wsize || !wNAF_len || !wNAF || !val_sub)
+ {
+ ECerr(EC_F_EC_WNAF_MUL, ERR_R_MALLOC_FAILURE);
goto err;
+ }
wNAF[0] = NULL; /* preliminary pivot */
wNAF[i] = OPENSSL_malloc(wNAF_len[i]);
if (wNAF[i] == NULL)
{
+ ECerr(EC_F_EC_WNAF_MUL, ERR_R_MALLOC_FAILURE);
OPENSSL_free(tmp_wNAF);
goto err;
}
* 'val_sub[i]' is a pointer to the subarray for the i-th point,
* or to a subarray of 'pre_comp->points' if we already have precomputation. */
val = OPENSSL_malloc((num_val + 1) * sizeof val[0]);
- if (val == NULL) goto err;
+ if (val == NULL)
+ {
+ ECerr(EC_F_EC_WNAF_MUL, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
val[num_val] = NULL; /* pivot element */
/* allocate points for precomputation */