lenbuf[0] = bignum_byte(b, len);
SHA512_Bytes(s, lenbuf, 1);
}
- memset(lenbuf, 0, sizeof(lenbuf));
+ smemclr(lenbuf, sizeof(lenbuf));
}
/*
pm1 = copybn(key->p);
decbn(pm1);
ed = modmul(key->exponent, key->private_exponent, pm1);
+ freebn(pm1);
cmp = bignum_cmp(ed, One);
- sfree(ed);
+ freebn(ed);
if (cmp != 0)
return 0;
qm1 = copybn(key->q);
decbn(qm1);
ed = modmul(key->exponent, key->private_exponent, qm1);
+ freebn(qm1);
cmp = bignum_cmp(ed, One);
- sfree(ed);
+ freebn(ed);
if (cmp != 0)
return 0;
*/
n = modmul(key->iqmp, key->q, key->p);
cmp = bignum_cmp(n, One);
- sfree(n);
+ freebn(n);
if (cmp != 0)
return 0;
*p = NULL;
if (*datalen < 4)
return;
- *length = GET_32BIT(*data);
+ *length = toint(GET_32BIT(*data));
+ if (*length < 0)
+ return;
*datalen -= 4;
*data += 4;
if (*datalen < *length)
if (!rsa->modulus || !rsa->exponent || !rsa->private_exponent ||
!rsa->iqmp || !rsa->p || !rsa->q) {
- sfree(rsa->modulus);
- sfree(rsa->exponent);
- sfree(rsa->private_exponent);
- sfree(rsa->iqmp);
- sfree(rsa->p);
- sfree(rsa->q);
- sfree(rsa);
+ rsa2_freekey(rsa);
+ return NULL;
+ }
+
+ if (!rsa_verify(rsa)) {
+ rsa2_freekey(rsa);
return NULL;
}
return 0;
}
in = getmp(&sig, &siglen);
+ if (!in)
+ return 0;
out = modpow(in, rsa->exponent, rsa->modulus);
freebn(in);