mirror of
https://github.com/Proxmark/proxmark3.git
synced 2025-08-22 06:13:27 -07:00
deleted client/emv/crypto_libgcrypt.c. not needs anymore.
This commit is contained in:
merlokk
parent
3742b140f6
commit
c22d00ca96
1 changed files with 0 additions and 532 deletions
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@ -1,532 +0,0 @@
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/*
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* libopenemv - a library to work with EMV family of smart cards
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* Copyright (C) 2015 Dmitry Eremin-Solenikov
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "openemv/crypto.h"
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#include "crypto_backend.h"
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#include <stdarg.h>
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#include <stdio.h>
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#define GCRYPT_NO_DEPRECATED
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#define GCRYPT_NO_MPI_MACROS
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#include <gcrypt.h>
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struct crypto_hash_libgcrypt {
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struct crypto_hash ch;
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gcry_md_hd_t md;
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};
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static void crypto_hash_libgcrypt_close(struct crypto_hash *_ch)
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{
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struct crypto_hash_libgcrypt *ch = container_of(_ch, struct crypto_hash_libgcrypt, ch);
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gcry_md_close(ch->md);
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free(ch);
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}
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static void crypto_hash_libgcrypt_write(struct crypto_hash *_ch, const unsigned char *buf, size_t len)
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{
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struct crypto_hash_libgcrypt *ch = container_of(_ch, struct crypto_hash_libgcrypt, ch);
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gcry_md_write(ch->md, buf, len);
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}
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static unsigned char *crypto_hash_libgcrypt_read(struct crypto_hash *_ch)
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{
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struct crypto_hash_libgcrypt *ch = container_of(_ch, struct crypto_hash_libgcrypt, ch);
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return gcry_md_read(ch->md, 0);
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}
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static size_t crypto_hash_libgcrypt_get_size(const struct crypto_hash *ch)
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{
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int algo = GCRY_MD_NONE;
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if (ch->algo == HASH_SHA_1)
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algo = GCRY_MD_SHA1;
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return gcry_md_get_algo_dlen(algo);
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}
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static struct crypto_hash *crypto_hash_libgcrypt_open(enum crypto_algo_hash hash)
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{
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struct crypto_hash_libgcrypt *ch = malloc(sizeof(*ch));
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gcry_error_t err;
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int algo = GCRY_MD_NONE;
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if (hash == HASH_SHA_1)
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algo = GCRY_MD_SHA1;
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err = gcry_md_open(&ch->md, algo, 0);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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free(ch);
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return NULL;
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}
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ch->ch.write = crypto_hash_libgcrypt_write;
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ch->ch.read = crypto_hash_libgcrypt_read;
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ch->ch.close = crypto_hash_libgcrypt_close;
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ch->ch.get_size = crypto_hash_libgcrypt_get_size;
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return &ch->ch;
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}
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struct crypto_pk_libgcrypt {
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struct crypto_pk cp;
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gcry_sexp_t pk;
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};
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static struct crypto_pk *crypto_pk_libgcrypt_open_rsa(va_list vl)
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{
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struct crypto_pk_libgcrypt *cp = malloc(sizeof(*cp));
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gcry_error_t err;
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char *mod = va_arg(vl, char *);
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int modlen = va_arg(vl, size_t);
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char *exp = va_arg(vl, char *);
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int explen = va_arg(vl, size_t);
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err = gcry_sexp_build(&cp->pk, NULL, "(public-key (rsa (n %b) (e %b)))",
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modlen, mod, explen, exp);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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free(cp);
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return NULL;
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}
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return &cp->cp;
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}
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static struct crypto_pk *crypto_pk_libgcrypt_open_priv_rsa(va_list vl)
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{
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struct crypto_pk_libgcrypt *cp = malloc(sizeof(*cp));
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gcry_error_t err;
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char *mod = va_arg(vl, char *);
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int modlen = va_arg(vl, size_t);
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char *exp = va_arg(vl, char *);
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int explen = va_arg(vl, size_t);
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char *d = va_arg(vl, char *);
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int dlen = va_arg(vl, size_t);
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char *p = va_arg(vl, char *);
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int plen = va_arg(vl, size_t);
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gcry_mpi_t pmpi;
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char *q = va_arg(vl, char *);
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int qlen = va_arg(vl, size_t);
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gcry_mpi_t qmpi;
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(void) va_arg(vl, char *);
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(void) va_arg(vl, size_t);
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(void) va_arg(vl, char *);
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(void) va_arg(vl, size_t);
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char *inv = va_arg(vl, char *);
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int invlen = va_arg(vl, size_t);
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gcry_mpi_t invmpi;
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err = gcry_mpi_scan(&pmpi, GCRYMPI_FMT_USG, p, plen, NULL);
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if (err)
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goto err_p;
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err = gcry_mpi_scan(&qmpi, GCRYMPI_FMT_USG, q, qlen, NULL);
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if (err)
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goto err_q;
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err = gcry_mpi_scan(&invmpi, GCRYMPI_FMT_USG, inv, invlen, NULL);
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if (err)
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goto err_inv;
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if (gcry_mpi_cmp (pmpi, qmpi) > 0) {
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gcry_mpi_swap (pmpi, qmpi);
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gcry_mpi_invm (invmpi, pmpi, qmpi);
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}
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err = gcry_sexp_build(&cp->pk, NULL, "(private-key (rsa (n %b) (e %b) (d %b) (p %M) (q %M) (u %M)))",
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modlen, mod, explen, exp, dlen, d,
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pmpi, qmpi, invmpi);
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if (err)
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goto err_sexp;
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err = gcry_pk_testkey(cp->pk);
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if (err)
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goto err_test;
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gcry_mpi_release(invmpi);
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gcry_mpi_release(qmpi);
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gcry_mpi_release(pmpi);
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return &cp->cp;
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err_test:
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gcry_sexp_release(cp->pk);
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err_sexp:
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gcry_mpi_release(invmpi);
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err_inv:
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gcry_mpi_release(qmpi);
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err_q:
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gcry_mpi_release(pmpi);
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err_p:
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free(cp);
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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return NULL;
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}
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static struct crypto_pk *crypto_pk_libgcrypt_genkey_rsa(va_list vl)
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{
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struct crypto_pk_libgcrypt *cp = malloc(sizeof(*cp));
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gcry_error_t err;
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gcry_sexp_t params;
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int transient = va_arg(vl, int);
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unsigned int nbits = va_arg(vl, unsigned int);
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unsigned int exp = va_arg(vl, unsigned int);
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err = gcry_sexp_build(¶ms, NULL,
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transient ?
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"(genkey (rsa (nbits %u) (rsa-use-e %u) (flags transient-key)))":
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"(genkey (rsa (nbits %u) (rsa-use-e %u)))",
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nbits, exp);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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free(cp);
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return NULL;
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}
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err = gcry_pk_genkey(&cp->pk, params);
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gcry_sexp_release(params);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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free(cp);
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return NULL;
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}
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return &cp->cp;
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}
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static void crypto_pk_libgcrypt_close(struct crypto_pk *_cp)
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{
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struct crypto_pk_libgcrypt *cp = container_of(_cp, struct crypto_pk_libgcrypt, cp);
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gcry_sexp_release(cp->pk);
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free(cp);
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}
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static unsigned char *crypto_pk_libgcrypt_encrypt(const struct crypto_pk *_cp, const unsigned char *buf, size_t len, size_t *clen)
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{
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struct crypto_pk_libgcrypt *cp = container_of(_cp, struct crypto_pk_libgcrypt, cp);
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gcry_error_t err;
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int blen = len;
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gcry_sexp_t dsexp, esexp, asexp;
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gcry_mpi_t tmpi;
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size_t templen;
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size_t keysize;
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unsigned char *result;
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err = gcry_sexp_build(&dsexp, NULL, "(data (flags raw) (value %b))",
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blen, buf);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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return NULL;
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}
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err = gcry_pk_encrypt(&esexp, dsexp, cp->pk);
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gcry_sexp_release(dsexp);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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return NULL;
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}
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asexp = gcry_sexp_find_token(esexp, "a", 1);
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gcry_sexp_release(esexp);
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if (!asexp)
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return NULL;
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tmpi = gcry_sexp_nth_mpi(asexp, 1, GCRYMPI_FMT_USG);
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gcry_sexp_release(asexp);
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if (!tmpi)
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return NULL;
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keysize = (gcry_pk_get_nbits(cp->pk) + 7) / 8;
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result = malloc(keysize);
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if (!result) {
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gcry_mpi_release(tmpi);
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return NULL;
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}
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err = gcry_mpi_print(GCRYMPI_FMT_USG, NULL, keysize, &templen, tmpi);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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gcry_mpi_release(tmpi);
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free(result);
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return NULL;
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}
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err = gcry_mpi_print(GCRYMPI_FMT_USG, result + keysize - templen, templen, &templen, tmpi);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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gcry_mpi_release(tmpi);
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free(result);
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return NULL;
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}
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memset(result, 0, keysize - templen);
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*clen = keysize;
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gcry_mpi_release(tmpi);
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return result;
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}
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static unsigned char *crypto_pk_libgcrypt_decrypt(const struct crypto_pk *_cp, const unsigned char *buf, size_t len, size_t *clen)
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{
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struct crypto_pk_libgcrypt *cp = container_of(_cp, struct crypto_pk_libgcrypt, cp);
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gcry_error_t err;
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int blen = len;
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gcry_sexp_t esexp, dsexp;
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gcry_mpi_t tmpi;
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size_t templen;
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size_t keysize;
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unsigned char *result;
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/* XXX: RSA-only! */
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err = gcry_sexp_build(&esexp, NULL, "(enc-val (flags) (rsa (a %b)))",
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blen, buf);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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return NULL;
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}
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err = gcry_pk_decrypt(&dsexp, esexp, cp->pk);
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gcry_sexp_release(esexp);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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return NULL;
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}
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tmpi = gcry_sexp_nth_mpi(dsexp, 1, GCRYMPI_FMT_USG);
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gcry_sexp_release(dsexp);
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if (!tmpi)
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return NULL;
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keysize = (gcry_pk_get_nbits(cp->pk) + 7) / 8;
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result = malloc(keysize);
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if (!result) {
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gcry_mpi_release(tmpi);
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return NULL;
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}
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err = gcry_mpi_print(GCRYMPI_FMT_USG, NULL, keysize, &templen, tmpi);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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gcry_mpi_release(tmpi);
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free(result);
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return NULL;
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}
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err = gcry_mpi_print(GCRYMPI_FMT_USG, result + keysize - templen, templen, &templen, tmpi);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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gcry_mpi_release(tmpi);
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free(result);
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return NULL;
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}
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memset(result, 0, keysize - templen);
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*clen = keysize;
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gcry_mpi_release(tmpi);
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return result;
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}
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static size_t crypto_pk_libgcrypt_get_nbits(const struct crypto_pk *_cp)
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{
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struct crypto_pk_libgcrypt *cp = container_of(_cp, struct crypto_pk_libgcrypt, cp);
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return gcry_pk_get_nbits(cp->pk);
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}
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|
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static unsigned char *crypto_pk_libgcrypt_get_parameter(const struct crypto_pk *_cp, unsigned param, size_t *plen)
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{
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struct crypto_pk_libgcrypt *cp = container_of(_cp, struct crypto_pk_libgcrypt, cp);
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gcry_error_t err;
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gcry_sexp_t psexp;
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gcry_mpi_t tmpi;
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size_t parameter_size;
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unsigned char *result;
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const char *name;
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/* XXX: RSA-only! */
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if (param == 0)
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name = "n";
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else if (param == 1)
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name = "e";
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else
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return NULL;
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psexp = gcry_sexp_find_token(cp->pk, name, 1);
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if (!psexp)
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return NULL;
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tmpi = gcry_sexp_nth_mpi(psexp, 1, GCRYMPI_FMT_USG);
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gcry_sexp_release(psexp);
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if (!tmpi)
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return NULL;
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parameter_size = (gcry_mpi_get_nbits(tmpi) + 7) / 8;
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result = malloc(parameter_size);
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if (!result) {
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gcry_mpi_release(tmpi);
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return NULL;
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}
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err = gcry_mpi_print(GCRYMPI_FMT_USG, result, parameter_size, NULL, tmpi);
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if (err) {
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fprintf(stderr, "LibGCrypt error %s/%s\n",
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gcry_strsource (err),
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gcry_strerror (err));
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gcry_mpi_release(tmpi);
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free(result);
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return NULL;
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}
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*plen = parameter_size;
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gcry_mpi_release(tmpi);
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return result;
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}
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static struct crypto_pk *crypto_pk_libgcrypt_open(enum crypto_algo_pk pk, va_list vl)
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{
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struct crypto_pk *cp;
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if (pk == PK_RSA)
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cp = crypto_pk_libgcrypt_open_rsa(vl);
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else
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return NULL;
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cp->close = crypto_pk_libgcrypt_close;
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cp->encrypt = crypto_pk_libgcrypt_encrypt;
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cp->get_parameter = crypto_pk_libgcrypt_get_parameter;
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cp->get_nbits = crypto_pk_libgcrypt_get_nbits;
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|
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return cp;
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}
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|
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static struct crypto_pk *crypto_pk_libgcrypt_open_priv(enum crypto_algo_pk pk, va_list vl)
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{
|
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struct crypto_pk *cp;
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|
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if (pk == PK_RSA)
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cp = crypto_pk_libgcrypt_open_priv_rsa(vl);
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else
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return NULL;
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cp->close = crypto_pk_libgcrypt_close;
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cp->encrypt = crypto_pk_libgcrypt_encrypt;
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cp->decrypt = crypto_pk_libgcrypt_decrypt;
|
||||
cp->get_parameter = crypto_pk_libgcrypt_get_parameter;
|
||||
cp->get_nbits = crypto_pk_libgcrypt_get_nbits;
|
||||
|
||||
return cp;
|
||||
}
|
||||
|
||||
static struct crypto_pk *crypto_pk_libgcrypt_genkey(enum crypto_algo_pk pk, va_list vl)
|
||||
{
|
||||
struct crypto_pk *cp;
|
||||
|
||||
if (pk == PK_RSA)
|
||||
cp = crypto_pk_libgcrypt_genkey_rsa(vl);
|
||||
else
|
||||
return NULL;
|
||||
|
||||
cp->close = crypto_pk_libgcrypt_close;
|
||||
cp->encrypt = crypto_pk_libgcrypt_encrypt;
|
||||
cp->decrypt = crypto_pk_libgcrypt_decrypt;
|
||||
cp->get_parameter = crypto_pk_libgcrypt_get_parameter;
|
||||
cp->get_nbits = crypto_pk_libgcrypt_get_nbits;
|
||||
|
||||
return cp;
|
||||
}
|
||||
|
||||
static struct crypto_backend crypto_libgcrypt_backend = {
|
||||
.hash_open = crypto_hash_libgcrypt_open,
|
||||
.pk_open = crypto_pk_libgcrypt_open,
|
||||
.pk_open_priv = crypto_pk_libgcrypt_open_priv,
|
||||
.pk_genkey = crypto_pk_libgcrypt_genkey,
|
||||
};
|
||||
|
||||
struct crypto_backend *crypto_libgcrypt_init(void)
|
||||
{
|
||||
/* Version check should be the very first call because it
|
||||
* makes sure that important subsystems are intialized. */
|
||||
if (!gcry_check_version (GCRYPT_VERSION)) {
|
||||
fputs ("libgcrypt version mismatch\n", stderr);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* We don't want to see any warnings, e.g. because we have not yet
|
||||
* parsed program options which might be used to suppress such
|
||||
* warnings. */
|
||||
gcry_control (GCRYCTL_SUSPEND_SECMEM_WARN);
|
||||
|
||||
/* ... If required, other initialization goes here. Note that the
|
||||
* process might still be running with increased privileges and that
|
||||
* the secure memory has not been intialized. */
|
||||
|
||||
/* Allocate a pool of 16k secure memory. This make the secure memory
|
||||
* available and also drops privileges where needed. */
|
||||
gcry_control (GCRYCTL_INIT_SECMEM, 16384, 0);
|
||||
|
||||
/* It is now okay to let Libgcrypt complain when there was/is
|
||||
* a problem with the secure memory. */
|
||||
gcry_control (GCRYCTL_RESUME_SECMEM_WARN);
|
||||
|
||||
/* ... If required, other initialization goes here. */
|
||||
|
||||
/* Tell Libgcrypt that initialization has completed. */
|
||||
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
|
||||
|
||||
// gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 3u , 0);
|
||||
// gcry_control (GCRYCTL_PRINT_CONFIG, stdout);
|
||||
|
||||
return &crypto_libgcrypt_backend;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue