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authorAndreas Schneider <asn@cynapses.org>2010-09-06 14:28:38 +0200
committerAndreas Schneider <asn@cynapses.org>2010-09-06 14:28:38 +0200
commitf7842e3a4b9acea2126ff725f993c299aef0e6db (patch)
tree18239f819a5edbcfc7f2961c48f3f9297314ef22 /src/gcrypt_missing.c
parent38421403d2dc45636e597f2a909daa6ae31976de (diff)
downloadlibssh-f7842e3a4b9acea2126ff725f993c299aef0e6db.tar.gz
libssh-f7842e3a4b9acea2126ff725f993c299aef0e6db.tar.xz
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misc: Rename libssh/ to src/
Diffstat (limited to 'src/gcrypt_missing.c')
-rw-r--r--src/gcrypt_missing.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/src/gcrypt_missing.c b/src/gcrypt_missing.c
new file mode 100644
index 00000000..7a456a6a
--- /dev/null
+++ b/src/gcrypt_missing.c
@@ -0,0 +1,99 @@
+/*
+ * gcrypt_missing.c - routines that are in OpenSSL but not in libgcrypt.
+ *
+ * This file is part of the SSH Library
+ *
+ * Copyright (c) 2003-2006 by Aris Adamantiadis
+ *
+ * The SSH Library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at your
+ * option) any later version.
+ *
+ * The SSH Library 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 Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with the SSH Library; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#include <stdlib.h>
+#include "libssh/priv.h"
+
+#ifdef HAVE_LIBGCRYPT
+int my_gcry_dec2bn(bignum *bn, const char *data) {
+ int count;
+
+ *bn = bignum_new();
+ if (*bn == NULL) {
+ return 0;
+ }
+ gcry_mpi_set_ui(*bn, 0);
+ for (count = 0; data[count]; count++) {
+ gcry_mpi_mul_ui(*bn, *bn, 10);
+ gcry_mpi_add_ui(*bn, *bn, data[count] - '0');
+ }
+
+ return count;
+}
+
+char *my_gcry_bn2dec(bignum bn) {
+ bignum bndup, num, ten;
+ char *ret;
+ int count, count2;
+ int size, rsize;
+ char decnum;
+
+ size = gcry_mpi_get_nbits(bn) * 3;
+ rsize = size / 10 + size / 1000 + 2;
+
+ ret = malloc(rsize + 1);
+ if (ret == NULL) {
+ return NULL;
+ }
+
+ if (!gcry_mpi_cmp_ui(bn, 0)) {
+ strcpy(ret, "0");
+ } else {
+ ten = bignum_new();
+ if (ten == NULL) {
+ SAFE_FREE(ret);
+ return NULL;
+ }
+
+ num = bignum_new();
+ if (num == NULL) {
+ SAFE_FREE(ret);
+ bignum_free(ten);
+ return NULL;
+ }
+
+ for (bndup = gcry_mpi_copy(bn), bignum_set_word(ten, 10), count = rsize;
+ count; count--) {
+ gcry_mpi_div(bndup, num, bndup, ten, 0);
+ for (decnum = 0, count2 = gcry_mpi_get_nbits(num); count2;
+ decnum *= 2, decnum += (gcry_mpi_test_bit(num, count2 - 1) ? 1 : 0),
+ count2--)
+ ;
+ ret[count - 1] = decnum + '0';
+ }
+ for (count = 0; count < rsize && ret[count] == '0'; count++)
+ ;
+ for (count2 = 0; count2 < rsize - count; ++count2) {
+ ret[count2] = ret[count2 + count];
+ }
+ ret[count2] = 0;
+ bignum_free(num);
+ bignum_free(bndup);
+ bignum_free(ten);
+ }
+
+ return ret;
+}
+
+#endif
+/* vim: set ts=2 sw=2 et cindent: */