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moved ssl calls to common

This commit is contained in:
jsorg71 2007-06-16 04:52:19 +00:00
parent 6ecbf36e7e
commit bc9462fefe
2 changed files with 44 additions and 173 deletions
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5
keygen/Makefile
View File

@ -1,6 +1,6 @@
# libvnc makefile
KEYGENOBJ = keygen.o os_calls.o
KEYGENOBJ = keygen.o os_calls.o ssl_calls.o
DEFINES =
@ -20,3 +20,6 @@ clean:
os_calls.o: ../common/os_calls.c
$(CC) $(C_OS_FLAGS) ../common/os_calls.c
ssl_calls.o: ../common/ssl_calls.c
$(CC) $(C_OS_FLAGS) ../common/ssl_calls.c

212
keygen/keygen.c
View File

@ -27,23 +27,15 @@
*/
#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 "ssl_calls.h"
#include "arch.h"
#define MY_KEY_SIZE 512
static char g_rev_exponent[4] =
static char g_exponent[4] =
{
0x00, 0x01, 0x00, 0x01
0x01, 0x00, 0x01, 0x00
};
static char g_ppk_e[4] =
@ -109,79 +101,6 @@ static char g_testkey[176] =
0xb6, 0x8e, 0xbe, 0x57, 0x57, 0xd2, 0xa9, 0x36
};
/*****************************************************************************/
static void
reverse(char* p, int len)
{
int i;
int j;
char temp;
for (i = 0, j = len - 1; i < j; i++, j--)
{
temp = p[i];
p[i] = p[j];
p[j] = temp;
}
}
/*****************************************************************************/
static int APP_CC
ssl_mod_exp(char* out, int out_len, char* in, int in_len,
char* mod, int mod_len, char* exp, int exp_len)
{
BN_CTX* ctx;
BIGNUM lmod;
BIGNUM lexp;
BIGNUM lin;
BIGNUM lout;
int rv;
char* l_out;
char* l_in;
char* l_mod;
char* l_exp;
l_out = (char*)g_malloc(out_len, 1);
l_in = (char*)g_malloc(in_len, 1);
l_mod = (char*)g_malloc(mod_len, 1);
l_exp = (char*)g_malloc(exp_len, 1);
g_memcpy(l_in, in, in_len);
g_memcpy(l_mod, mod, mod_len);
g_memcpy(l_exp, exp, exp_len);
reverse(l_in, in_len);
reverse(l_mod, mod_len);
reverse(l_exp, exp_len);
ctx = BN_CTX_new();
BN_init(&lmod);
BN_init(&lexp);
BN_init(&lin);
BN_init(&lout);
BN_bin2bn((unsigned char*)l_mod, mod_len, &lmod);
BN_bin2bn((unsigned char*)l_exp, exp_len, &lexp);
BN_bin2bn((unsigned char*)l_in, in_len, &lin);
BN_mod_exp(&lout, &lin, &lexp, &lmod, ctx);
rv = BN_bn2bin(&lout, (unsigned char*)l_out);
if (rv <= out_len)
{
reverse(l_out, rv);
g_memcpy(out, l_out, out_len);
}
else
{
rv = 0;
}
BN_free(&lin);
BN_free(&lout);
BN_free(&lexp);
BN_free(&lmod);
BN_CTX_free(ctx);
g_free(l_out);
g_free(l_in);
g_free(l_mod);
g_free(l_exp);
return rv;
}
/*****************************************************************************/
static int APP_CC
out_params(void)
@ -199,25 +118,31 @@ static int APP_CC
sign_key(char* e_data, int e_len, char* n_data, int n_len,
char* d_data, int d_len, char* sign_data, int sign_len)
{
char key[176];
char md5_final[64];
MD5_CTX md5;
char* key;
char* md5_final;
void* md5;
if ((e_len != 4) || (n_len != 64) || (sign_len != 64))
{
return 1;
}
key = (char*)g_malloc(176, 0);
md5_final = (char*)g_malloc(64, 0);
md5 = ssl_md5_info_create();
g_memcpy(key, g_testkey, 176);
g_memcpy(key + 32, e_data, 4);
g_memcpy(key + 36, n_data, 64);
MD5_Init(&md5);
MD5_Update(&md5, (unsigned char*)key, 108);
ssl_md5_clear(md5);
ssl_md5_transform(md5, key, 108);
g_memset(md5_final, 0xff, 64);
MD5_Final((unsigned char*)md5_final, &md5);
ssl_md5_complete(md5, md5_final);
md5_final[16] = 0;
md5_final[62] = 1;
md5_final[63] = 0;
ssl_mod_exp(sign_data, 64, md5_final, 64, g_ppk_n, 64, g_ppk_d, 64);
ssl_md5_info_delete(md5);
g_free(key);
g_free(md5_final);
return 0;
}
@ -303,103 +228,43 @@ key_gen(void)
char* n_data;
char* d_data;
char* sign_data;
unsigned char* p;
int len;
int e_len;
int n_len;
int d_len;
int sign_len;
int error;
int offset;
BN_CTX* my_ctx;
RSA* my_key;
BIGNUM* my_e;
e_data = 0;
n_data = 0;
d_data = 0;
sign_data = 0;
e_len = 0;
n_len = 0;
d_len = 0;
sign_len = 0;
e_data = g_exponent;
n_data = (char*)g_malloc(64, 0);
d_data = (char*)g_malloc(64, 0);
sign_data = (char*)g_malloc(64, 0);
e_len = 4;
n_len = 64;
d_len = 64;
sign_len = 64;
error = 0;
my_ctx = BN_CTX_new();
my_e = BN_new();
p = (unsigned char*)g_rev_exponent;
len = sizeof(g_rev_exponent);
BN_bin2bn(p, len, my_e);
my_key = RSA_new();
g_writeln("");
g_writeln("Generating %d bit rsa key...", MY_KEY_SIZE);
g_writeln("");
if (error == 0)
{
/* RSA_generate_key_ex returns boolean */
error = RSA_generate_key_ex(my_key, MY_KEY_SIZE, my_e, 0) == 0;
error = ssl_gen_key_xrdp1(MY_KEY_SIZE, e_data, e_len, n_data, n_len,
d_data, d_len);
if (error != 0)
{
g_writeln("error %d in key_gen, RSA_generate_key_ex", error);
g_writeln("error %d in key_gen, ssl_gen_key_xrdp1", error);
}
}
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, 1);
offset = (((e_len + 3) / 4) * 4) - e_len;
e_len = e_len + offset;
p = (unsigned char*)(e_data + offset);
BN_bn2bin(my_key->e, p);
reverse(e_data, e_len);
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, 1);
offset = (((n_len + 3) / 4) * 4) - n_len;
n_len = n_len + offset;
p = (unsigned char*)(n_data + offset);
BN_bn2bin(my_key->n, p);
reverse(n_data, n_len);
g_writeln("public modulus size %d bytes", n_len);
g_hexdump(n_data, n_len);
g_writeln("");
/* signature is same size as public modulus */
sign_data = (char*)g_malloc(n_len, 1);
sign_len = n_len;
}
d_len = BN_num_bytes(my_key->d);
if (d_len > 0)
{
d_data = (char*)g_malloc(d_len, 0);
offset = (((d_len + 3) / 4) * 4) - d_len;
d_len = d_len + offset;
p = (unsigned char*)(d_data + offset);
BN_bn2bin(my_key->d, p);
reverse(d_data, d_len);
g_writeln("private exponent size %d bytes", d_len);
g_hexdump(d_data, d_len);
g_writeln("");
}
error = sign_key(e_data, e_len, n_data, n_len, d_data, d_len,
sign_data, sign_len);
if (error != 0)
{
g_writeln("error %d in key_gen, sign_key", error);
}
else
{
g_writeln("signature size %d bytes", sign_len);
g_hexdump(sign_data, sign_len);
g_writeln("");
}
}
if (error == 0)
{
@ -410,10 +275,6 @@ key_gen(void)
g_writeln("error %d in key_gen, save_all", 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);
g_free(sign_data);
@ -424,10 +285,13 @@ key_gen(void)
static int APP_CC
key_test(void)
{
char md5_final[64];
char sig[64];
MD5_CTX md5;
char* md5_final;
char* sig;
void* md5;
md5_final = (char*)g_malloc(64, 0);
sig = (char*)g_malloc(64, 0);
md5 = ssl_md5_info_create();
g_writeln("original key is:");
g_hexdump(g_testkey, 176);
g_writeln("original exponent is:");
@ -436,22 +300,26 @@ key_test(void)
g_hexdump(g_testkey + 36, 64);
g_writeln("original signature is:");
g_hexdump(g_testkey + 112, 64);
MD5_Init(&md5);
MD5_Update(&md5, (unsigned char*)g_testkey, 108);
ssl_md5_clear(md5);
ssl_md5_transform(md5, g_testkey, 108);
g_memset(md5_final, 0xff, 64);
MD5_Final((unsigned char*)md5_final, &md5);
ssl_md5_complete(md5, md5_final);
g_writeln("md5 hash of first 108 bytes of this key is:");
g_hexdump(md5_final, 16);
md5_final[16] = 0;
md5_final[62] = 1;
md5_final[63] = 0;
ssl_mod_exp(sig, 64, md5_final, 64, g_ppk_n, 64, g_ppk_d, 64);
g_writeln("produced signature(this should match original signature above) is:");
g_writeln("produced signature(this should match original \
signature above) is:");
g_hexdump(sig, 64);
g_memset(md5_final, 0, 64);
ssl_mod_exp(md5_final, 64, g_testkey + 112, 64, g_ppk_n, 64, g_ppk_e, 4);
g_writeln("decrypted hash of first 108 bytes of this key is:");
g_hexdump(md5_final, 64);
ssl_md5_info_delete(md5);
g_free(md5_final);
g_free(sig);
return 0;
}