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This memset() in the ubsec ENGINE is a bug. Zeroing out the result array

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should not be necessary in any case, but more importantly the result and
input BIGNUMs could be the same, in which case this is clearly a problem.

Submitted by: Jonathan Hersch
Reviewed by: Joe Orton
Approved by: Geoff Thorpe
This commit is contained in:
Geoff Thorpe 2003-06-06 17:51:34 +00:00
parent 2ee67f1dad
commit dcfb57c736
1 changed files with 0 additions and 1 deletions
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engines/e_ubsec.c
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@ -566,7 +566,6 @@ static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_BN_EXPAND_FAIL);
return 0;
}
memset(r->d, 0, BN_num_bytes(m));
if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) {
fd = 0;