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Remove fraction of total memory as a command line opt

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This commit is contained in:
Chris Oei 2012-09-02 20:10:20 -07:00
parent de5e211d56
commit d496cad407
6 changed files with 15 additions and 387 deletions
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24
lib/genpass/genpass.c
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@ -38,7 +38,6 @@
#include <openssl/aes.h>
#include "crypto_scrypt.h"
#include "memlimit.h"
#include "sha256.h"
#include "sysendian.h"
@ -46,13 +45,13 @@
#define ENCBLOCK 65536
static int pickparams(size_t, double, int,
static int pickparams(size_t, int,
int *, uint32_t *, uint32_t *);
static int checkparams(size_t, double, double, int, uint32_t, uint32_t);
static int checkparams(size_t, int, int, uint32_t, uint32_t);
static int getsalt(uint8_t[32]);
static int
pickparams(size_t maxmem, double maxmemfrac, int megaops,
pickparams(size_t maxmem, int megaops,
int * logN, uint32_t * r, uint32_t * p)
{
size_t memlimit;
@ -62,8 +61,7 @@ pickparams(size_t maxmem, double maxmemfrac, int megaops,
int rc;
/* Figure out how much memory to use. */
if (memtouse(maxmem, maxmemfrac, &memlimit))
return (1);
memlimit = maxmem * 1000000;
opslimit = 1000000 * megaops;
@ -112,7 +110,7 @@ pickparams(size_t maxmem, double maxmemfrac, int megaops,
}
static int
checkparams(size_t maxmem, double maxmemfrac, double maxtime,
checkparams(size_t maxmem, int megaops,
int logN, uint32_t r, uint32_t p)
{
size_t memlimit;
@ -122,13 +120,9 @@ checkparams(size_t maxmem, double maxmemfrac, double maxtime,
int rc;
/* Figure out the maximum amount of memory we can use. */
if (memtouse(maxmem, maxmemfrac, &memlimit))
return (1);
memlimit = 1000000 * maxmem;
/* Figure out how fast the CPU is. */
if ((rc = scryptenc_cpuperf(&opps)) != 0)
return (rc);
opslimit = opps * maxtime;
opslimit = 1000000 * megaops;
/* Sanity-check values. */
if ((logN < 1) || (logN > 63))
@ -192,7 +186,7 @@ err0:
int
genpass(uint8_t dk[64],
const uint8_t * passwd, size_t passwdlen,
size_t maxmem, double maxmemfrac, int megaops)
size_t maxmem, int megaops)
{
uint8_t salt[32];
uint8_t hbuf[32];
@ -206,7 +200,7 @@ genpass(uint8_t dk[64],
int rc;
/* Pick values for N, r, p. */
if ((rc = pickparams(maxmem, maxmemfrac, megaops,
if ((rc = pickparams(maxmem, megaops,
&logN, &r, &p)) != 0)
return (rc);
N = (uint64_t)(1) << logN;