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(BN_rand): don't leak memory on failure, cache malloc(0) case

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@16519 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2006-01-11 08:33:58 +00:00
parent 0e63038199
commit 670afff8cf
1 changed files with 4 additions and 2 deletions
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6
lib/des/bn.c
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@@ -332,7 +332,7 @@ BN_rand(BIGNUM *bn, int bits, int top, int bottom)
i->negative = 0; i->negative = 0;
i->data = malloc(len); i->data = malloc(len);
if (i->data == NULL) if (i->data == NULL && len != 0)
return 0; return 0;
i->length = len; i->length = len;
@@ -353,8 +353,10 @@ BN_rand(BIGNUM *bn, int bits, int top, int bottom)
} else if (top == 1 && bits > 1) { } else if (top == 1 && bits > 1) {
BN_set_bit(bn, bits - 1); BN_set_bit(bn, bits - 1);
BN_set_bit(bn, bits - 2); BN_set_bit(bn, bits - 2);
} else } else {
BN_clear(bn);
return 0; return 0;
}
if (bottom && bits > 0) if (bottom && bits > 0)
BN_set_bit(bn, 0); BN_set_bit(bn, 0);