5c87fcc154
OpenSSL 3.0 has deprecated the low-level SHA1 functions and does not include an upper layer interface that could be used to use the SHA1_Transform() function. Use the internal SHA-1 implementation instead as a workaround. While this type of duplicate implementation of SHA-1 is not really ideal, this PRF is needed only for EAP-SIM/AKA and there does not seem to be sufficient justification to try to get this working more cleanly with OpenSSL 3.0. Signed-off-by: Jouni Malinen <j@w1.fi>
114 lines
2.5 KiB
C
114 lines
2.5 KiB
C
/*
|
|
* FIPS 186-2 PRF for libcrypto
|
|
* Copyright (c) 2004-2005, Jouni Malinen <j@w1.fi>
|
|
*
|
|
* This software may be distributed under the terms of the BSD license.
|
|
* See README for more details.
|
|
*/
|
|
|
|
#include "includes.h"
|
|
#include <openssl/opensslv.h>
|
|
|
|
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
|
|
|
|
/* OpenSSL 3.0 has deprecated the low-level SHA1 functions and does not
|
|
* include an upper layer interface that could be used to use the
|
|
* SHA1_Transform() function. Use the internal SHA-1 implementation instead
|
|
* as a workaround. */
|
|
#include "sha1-internal.c"
|
|
#include "fips_prf_internal.c"
|
|
|
|
#else /* OpenSSL version >= 3.0 */
|
|
|
|
#include <openssl/sha.h>
|
|
|
|
#include "common.h"
|
|
#include "crypto.h"
|
|
|
|
|
|
static void sha1_transform(u32 *state, const u8 data[64])
|
|
{
|
|
SHA_CTX context;
|
|
os_memset(&context, 0, sizeof(context));
|
|
#if defined(OPENSSL_IS_BORINGSSL) && !defined(ANDROID)
|
|
context.h[0] = state[0];
|
|
context.h[1] = state[1];
|
|
context.h[2] = state[2];
|
|
context.h[3] = state[3];
|
|
context.h[4] = state[4];
|
|
SHA1_Transform(&context, data);
|
|
state[0] = context.h[0];
|
|
state[1] = context.h[1];
|
|
state[2] = context.h[2];
|
|
state[3] = context.h[3];
|
|
state[4] = context.h[4];
|
|
#else
|
|
context.h0 = state[0];
|
|
context.h1 = state[1];
|
|
context.h2 = state[2];
|
|
context.h3 = state[3];
|
|
context.h4 = state[4];
|
|
SHA1_Transform(&context, data);
|
|
state[0] = context.h0;
|
|
state[1] = context.h1;
|
|
state[2] = context.h2;
|
|
state[3] = context.h3;
|
|
state[4] = context.h4;
|
|
#endif
|
|
}
|
|
|
|
|
|
int fips186_2_prf(const u8 *seed, size_t seed_len, u8 *x, size_t xlen)
|
|
{
|
|
u8 xkey[64];
|
|
u32 t[5], _t[5];
|
|
int i, j, m, k;
|
|
u8 *xpos = x;
|
|
u32 carry;
|
|
|
|
if (seed_len < sizeof(xkey))
|
|
os_memset(xkey + seed_len, 0, sizeof(xkey) - seed_len);
|
|
else
|
|
seed_len = sizeof(xkey);
|
|
|
|
/* FIPS 186-2 + change notice 1 */
|
|
|
|
os_memcpy(xkey, seed, seed_len);
|
|
t[0] = 0x67452301;
|
|
t[1] = 0xEFCDAB89;
|
|
t[2] = 0x98BADCFE;
|
|
t[3] = 0x10325476;
|
|
t[4] = 0xC3D2E1F0;
|
|
|
|
m = xlen / 40;
|
|
for (j = 0; j < m; j++) {
|
|
/* XSEED_j = 0 */
|
|
for (i = 0; i < 2; i++) {
|
|
/* XVAL = (XKEY + XSEED_j) mod 2^b */
|
|
|
|
/* w_i = G(t, XVAL) */
|
|
os_memcpy(_t, t, 20);
|
|
sha1_transform(_t, xkey);
|
|
WPA_PUT_BE32(xpos, _t[0]);
|
|
WPA_PUT_BE32(xpos + 4, _t[1]);
|
|
WPA_PUT_BE32(xpos + 8, _t[2]);
|
|
WPA_PUT_BE32(xpos + 12, _t[3]);
|
|
WPA_PUT_BE32(xpos + 16, _t[4]);
|
|
|
|
/* XKEY = (1 + XKEY + w_i) mod 2^b */
|
|
carry = 1;
|
|
for (k = 19; k >= 0; k--) {
|
|
carry += xkey[k] + xpos[k];
|
|
xkey[k] = carry & 0xff;
|
|
carry >>= 8;
|
|
}
|
|
|
|
xpos += 20;
|
|
}
|
|
/* x_j = w_0|w_1 */
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* OpenSSL version >= 3.0 */
|