diff options
Diffstat (limited to 'keygen')
| -rwxr-xr-x | keygen/Makefile | 22 | ||||
| -rwxr-xr-x | keygen/keygen.c | 135 |
2 files changed, 157 insertions, 0 deletions
diff --git a/keygen/Makefile b/keygen/Makefile new file mode 100755 index 00000000..e16dff6c --- /dev/null +++ b/keygen/Makefile @@ -0,0 +1,22 @@ +# libvnc makefile + +KEYGENOBJ = keygen.o os_calls.o + +DEFINES = + +CFLAGS = -Wall -O2 -I../common $(DEFINES) +C_OS_FLAGS = $(CFLAGS) -c +LDFLAGS = +LIBS = -ldl -lcrypto +CC = gcc + +all: keygen_ + +keygen_: $(KEYGENOBJ) + $(CC) $(LDFLAGS) -o keygen $(KEYGENOBJ) $(LIBS) + +clean: + rm -f $(KEYGENOBJ) keygen + +os_calls.o: ../common/os_calls.c + $(CC) $(C_OS_FLAGS) ../common/os_calls.c diff --git a/keygen/keygen.c b/keygen/keygen.c new file mode 100755 index 00000000..c3dd99fd --- /dev/null +++ b/keygen/keygen.c @@ -0,0 +1,135 @@ +/* + This program 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. + + This program 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., 675 Mass Ave, Cambridge, MA 02139, USA. + + xrdp: A Remote Desktop Protocol server. + Copyright (C) Jay Sorg 2007 + + rsa key generator for xrdp + +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <openssl/rc4.h> +#include <openssl/md5.h> +#include <openssl/sha.h> +#include <openssl/bn.h> +#include <openssl/x509v3.h> +#include <openssl/rsa.h> +#include "os_calls.h" +#include "arch.h" + +#define MY_KEY_SIZE 512 + +static char g_rev_exponent[4] = { 0x00, 0x01, 0x00, 0x01 }; + +/*****************************************************************************/ +static int APP_CC +out_params(void) +{ + g_writeln(""); + g_writeln("key gen utility example './keygen xrdp'"); + g_writeln(""); + return 0; +} + +/*****************************************************************************/ +static int APP_CC +key_gen(void) +{ + char* e_data; + char* n_data; + char* d_data; + int e_len; + int n_len; + int d_len; + int error; + BN_CTX* my_ctx; + RSA* my_key; + BIGNUM* my_e; + + e_data = 0; + n_data = 0; + d_data = 0; + error = 0; + my_ctx = BN_CTX_new(); + my_e = BN_new(); + BN_bin2bn((unsigned char*)g_rev_exponent, sizeof(g_rev_exponent), my_e); + my_key = RSA_new(); + g_writeln(""); + g_writeln("Generating %d bit rsa key...", MY_KEY_SIZE); + g_writeln(""); + /* RSA_generate_key_ex returns boolean */ + error = RSA_generate_key_ex(my_key, MY_KEY_SIZE, my_e, 0) == 0; + if (error == 0) + { + g_writeln("RSA_generate_key_ex ok"); + g_writeln(""); + e_len = BN_num_bytes(my_key->e); + if (e_len > 0) + { + e_data = (char*)g_malloc(e_len, 0); + BN_bn2bin(my_key->e, (unsigned char*)e_data); + g_writeln("public exponent size %d bytes", e_len); + g_hexdump(e_data, e_len); + g_writeln(""); + } + n_len = BN_num_bytes(my_key->n); + if (n_len > 0) + { + n_data = (char*)g_malloc(n_len, 0); + BN_bn2bin(my_key->n, (unsigned char*)n_data); + g_writeln("public modulus size %d bytes", n_len); + g_hexdump(n_data, n_len); + g_writeln(""); + } + d_len = BN_num_bytes(my_key->d); + if (d_len > 0) + { + d_data = (char*)g_malloc(d_len, 0); + BN_bn2bin(my_key->d, (unsigned char*)d_data); + g_writeln("private exponent size %d bytes", d_len); + g_hexdump(d_data, d_len); + g_writeln(""); + } + } + else + { + g_writeln("error %d in key_gen, RSA_generate_key_ex", error); + } + BN_free(my_e); + RSA_free(my_key); + BN_CTX_free(my_ctx); + g_free(e_data); + g_free(n_data); + g_free(d_data); + return error; +} + +/*****************************************************************************/ +int DEFAULT_CC +main(int argc, char** argv) +{ + if (argc == 2) + { + if (g_strcasecmp(argv[1], "xrdp") == 0) + { + return key_gen(); + } + } + out_params(); + return 0; +} |