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adds SRP client and server structures.

This commit is contained in:
Moisés Guimarães 2015-07-06 12:53:53 -03:00
parent 08959624f2
commit daf01977a1
2 changed files with 100 additions and 0 deletions
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wolfcrypt/src/srp.c Normal file
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/* srp.c
*
* Copyright (C) 2006-2015 wolfSSL Inc.
*
* This file is part of wolfSSL. (formerly known as CyaSSL)
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/

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wolfssl/wolfcrypt/srp.h Normal file
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/* srp.h
*
* Copyright (C) 2006-2015 wolfSSL Inc.
*
* This file is part of wolfSSL. (formerly known as CyaSSL)
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef WOLF_CRYPT_SRP_H
#define WOLF_CRYPT_SRP_H
#include <wolfssl/wolfcrypt/types.h>
#ifdef HAVE_SRP
/* Select the largest available hash for the buffer size. */
#if defined(WOLFSSL_SHA512)
SRP_MAX_DIGEST_SIZE = SHA512_DIGEST_SIZE,
#elif defined(WOLFSSL_SHA384)
SRP_MAX_DIGEST_SIZE = SHA384_DIGEST_SIZE,
#elif !defined(NO_SHA256)
SRP_MAX_DIGEST_SIZE = SHA256_DIGEST_SIZE,
#elif !defined(NO_SHA)
SRP_MAX_DIGEST_SIZE = SHA_DIGEST_SIZE,
#else
#error "You have to have some kind of SHA hash if you want to use SRP."
#endif
typedef struct {
mp_int N; /**< Modulus. N = 2q+1, [q, N] are primes. */
mp_int g; /**< Generator. A generator modulo N. */
mp_int a; /**< Private ephemeral value. Random. */
mp_int A; /**< Public ephemeral value. pow(g, a, N) */
mp_int B; /**< Server's public ephemeral value. */
mp_int s; /**< Session key. */
byte k[SRP_MAX_DIGEST_SIZE]; /**< Multiplier parameeter. H(N, g) */
byte x[SRP_MAX_DIGEST_SIZE]; /**< Priv key. H(salt, H(user, ":", pswd)) */
byte u[SRP_MAX_DIGEST_SIZE]; /**< Random scrambling parameeter. */
byte type; /**< Hash type, SHA[1:256:384:512] */
byte* user; /**< Username, login. */
word32 userSz; /**< Username length. */
byte* salt; /**< Small salt. */
word32 saltSz; /**< Salt length. */
byte* pswd; /**< Password. */
word32 pswdSz; /**< Password length. */
} SrpClient;
typedef struct {
mp_int N; /**< Modulus. N = 2q+1, [q, N] are primes. */
mp_int g; /**< Generator. A generator modulo N. */
mp_int b; /**< Private ephemeral value. */
mp_int B; /**< Public ephemeral value. */
mp_int A; /**< Client's public ephemeral value. */
mp_int s; /**< Session key. */
byte k[SRP_MAX_DIGEST_SIZE]; /**< Multiplier parameeter. H(N, g) */
mp_int v; /**< Verifier. v = pow(g, x, N) */
byte u[SRP_MAX_DIGEST_SIZE]; /**< Random scrambling parameeter. */
byte* user; /**< Username, login. */
word32 userSz; /**< Username length. */
byte* salt; /**< Small salt. */
word32 saltSz; /**< Salt length. */
} SrpServer;
#endif /* HAVE_SRP */
#endif /* WOLF_CRYPT_SRP_H */