shrub/jets/e/scr.c
2018-02-25 23:40:19 +08:00

220 lines
6.5 KiB
C

/* j/5/scr.c
**
*/
#include "all.h"
#include <stdint.h>
#include <errno.h>
#include <libscrypt.h>
#include <sha256.h>
static int _crypto_scrypt(const uint8_t *, size_t, const uint8_t *, size_t,
uint64_t, uint32_t, uint32_t, uint8_t *, size_t);
/* functions
*/
u3_noun
u3qes_hsl(u3_atom p, u3_atom pl,
u3_atom s, u3_atom sl,
u3_atom n,
u3_atom r,
u3_atom z,
u3_atom d)
{
// asserting that n is power of 2 in _crypto_scrypt
if (!(_(u3a_is_atom(p)) && _(u3a_is_atom(s)) &&
_(u3a_is_cat(pl)) && _(u3a_is_cat(sl)) &&
_(u3a_is_cat(n)) && _(u3a_is_cat(r)) &&
_(u3a_is_cat(z)) && _(u3a_is_cat(d)) &&
(r != 0) && (z != 0) &&
(((c3_d)r * 128 * ((c3_d)n + z - 1)) <= (1 << 30))))
return u3m_bail(c3__exit);
c3_y* b_p = u3a_malloc(pl + 1); c3_y* b_s= u3a_malloc(sl + 1);
u3r_bytes(0, pl, b_p, p); u3r_bytes(0, sl, b_s, s);
b_p[pl] = 0; b_s[sl]=0;
c3_y* buf = u3a_malloc(d);
if (_crypto_scrypt(b_p, pl, b_s, sl, n, r, z, buf, d) != 0)
return u3m_bail(c3__exit);
u3_noun res = u3i_bytes(d, buf);
u3a_free(b_p); u3a_free(b_s); u3a_free(buf);
return res;
}
u3_noun
u3wes_hsl(u3_noun cor)
{
u3_noun p, pl, s, sl, n, r, z, d;
u3_noun q;
u3x_quil(u3r_at(u3x_sam, cor), &p, &pl, &s, &sl, &q);
u3x_qual(q, &n, &r, &z, &d);
return u3qes_hsl(p, pl, s, sl, n, r, z, d);
}
u3_noun
u3qes_hsh(u3_atom p,
u3_atom s,
u3_atom n,
u3_atom r,
u3_atom z,
u3_atom d)
{
// asserting that n is power of 2 in _crypto_scrypt
if (!(_(u3a_is_atom(p)) && _(u3a_is_atom(s)) &&
_(u3a_is_cat(n)) && _(u3a_is_cat(r)) &&
_(u3a_is_cat(z)) && _(u3a_is_cat(d)) &&
(r != 0) && (z != 0) &&
(((c3_d)r * 128 * ((c3_d)n + z - 1)) <= (1 << 30))))
return u3m_bail(c3__exit);
c3_w pl = u3r_met(3, p); c3_w sl = u3r_met(3, s);
c3_y* b_p = u3a_malloc(pl + 1); c3_y* b_s= u3a_malloc(sl + 1);
u3r_bytes(0, pl, b_p, p); u3r_bytes(0, sl, b_s, s);
b_p[pl] = 0; b_s[sl]=0;
c3_y* buf = u3a_malloc(d);
if (_crypto_scrypt(b_p, pl, b_s, sl, n, r, z, buf, d) != 0)
return u3m_bail(c3__exit);
u3_noun res = u3i_bytes(d, buf);
u3a_free(b_p); u3a_free(b_s); u3a_free(buf);
return res;
}
u3_noun
u3wes_hsh(u3_noun cor)
{
u3_noun p, s, n, r, z, d;
u3_noun q;
u3x_quil(u3r_at(u3x_sam, cor), &p, &s, &n, &r, &q);
u3x_cell(q, &z, &d);
return u3qes_hsh(p, s, n, r, z, d);
}
u3_noun
u3qes_pbl(u3_atom p, u3_atom pl,
u3_atom s, u3_atom sl,
u3_atom c,
u3_atom d)
{
if (!(_(u3a_is_atom(p)) && _(u3a_is_atom(s)) &&
_(u3a_is_cat(pl)) && _(u3a_is_cat(sl)) &&
_(u3a_is_cat(c)) && _(u3a_is_cat(d)) &&
(d <= (1 << 30)) && (c <= (1 << 28)) &&
(c != 0)))
return u3m_bail(c3__exit);
c3_y* b_p = u3a_malloc(pl + 1); c3_y* b_s= u3a_malloc(pl + 1);
u3r_bytes(0, pl, b_p, p); u3r_bytes(0, sl, b_s, s);
b_p[pl] = 0; b_s[sl]=0;
c3_y* buf = u3a_malloc(d);
libscrypt_PBKDF2_SHA256(b_p, pl, b_s, sl, c, buf, d);
u3_noun res = u3i_bytes(d, buf);
u3a_free(b_p); u3a_free(b_s); u3a_free(buf);
return res;
}
u3_noun
u3wes_pbl(u3_noun cor)
{
u3_noun p, pl, s, sl, c, d;
u3_noun q;
u3x_quil(u3r_at(u3x_sam, cor), &p, &pl, &s, &sl, &q);
u3x_cell(q, &c, &d);
return u3qes_pbl(p, pl, s, sl, c, d);
}
u3_noun
u3qes_pbk(u3_atom p, u3_atom s, u3_atom c, u3_atom d)
{
if (!(_(u3a_is_atom(p)) && _(u3a_is_atom(s)) &&
_(u3a_is_cat(c)) && _(u3a_is_cat(d)) &&
(d <= (1 << 30)) && (c <= (1 << 28)) &&
(c != 0)))
return u3m_bail(c3__exit);
c3_w pl = u3r_met(3, p); c3_w sl = u3r_met(3, s);
c3_y* b_p = u3a_malloc(pl + 1); c3_y* b_s= u3a_malloc(pl + 1);
u3r_bytes(0, pl, b_p, p); u3r_bytes(0, sl, b_s, s);
b_p[pl] = 0; b_s[sl]=0;
c3_y* buf = u3a_malloc(d);
libscrypt_PBKDF2_SHA256(b_p, pl, b_s, sl, c, buf, d);
u3_noun res = u3i_bytes(d, buf);
u3a_free(b_p); u3a_free(b_s); u3a_free(buf);
return res;
}
u3_noun
u3wes_pbk(u3_noun cor)
{
u3_noun p, s, c, d;
u3x_qual(u3r_at(u3x_sam, cor), &p, &s, &c, &d);
return u3qes_pbk(p, s, c, d);
}
/*-
* Copyright 2009 Colin Percival
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file was originally written by Colin Percival as part of the Tarsnap
* online backup system.
*/
/**
* crypto_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen):
* Compute scrypt(passwd[0 .. passwdlen - 1], salt[0 .. saltlen - 1], N, r,
* p, buflen) and write the result into buf. The parameters r, p, and buflen
* must satisfy r * p < 2^30 and buflen <= (2^32 - 1) * 32. The parameter N
* must be a power of 2 greater than 1.
*
* Return 0 on success; or -1 on error.
*/
static int
_crypto_scrypt(const uint8_t * passwd, size_t passwdlen,
const uint8_t * salt, size_t saltlen, uint64_t N, uint32_t r, uint32_t p,
uint8_t * buf, size_t buflen)
{
return libscrypt_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen);
}