\/\/ enc_rsa.c
\/\/
\/\/ Copyright 2009 Kim Sung-tae <pchero21@gmail.com>
\/\/
\/\/ 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., 51 Franklin Street, Fifth Floor, Boston,
\/\/ MA 02110-1301, USA.<\/p>\n
#include <stdio.h>
#include <string.h><\/p>\n
#include <openssl\/bio.h>
#include <openssl\/err.h>
#include <openssl\/bn.h>
#include <openssl\/rsa.h>
#include <openssl\/pem.h>
#include <openssl\/rand.h><\/p>\n
#define true 1
#define false 0<\/p>\n
\/\/ \ucf5c\ubc31 \ud568\uc218 \uc815\uc758
static void genrsa_cb(int p, int n, void *arb);<\/p>\n
int main(int argc, char** argv)
{
int keyLenInput = 512; \/\/ \ud0a4 \uae38\uc774
char outPublicKeyFile[50]; \/\/ \uacf5\uac1c\ud0a4\ub97c \uc800\uc7a5
char outPrivateKeyFile[50]; \/\/ \uac1c\uc778\ud0a4\ub97c \uc800\uc7a5
int isPem = true; \/\/ PEM \ud615\uc2dd\uc73c\ub85c…
BIO *publicOut = NULL; \/\/ \uacf5\uac1c\ud0a4\uac00 \uc800\uc7a5\ub418\ub294 \ud30c\uc77c BIO
BIO *privateOut = NULL; \/\/ \uac1c\uc778\ud0a4\uac00 \uc800\uc7a5\ub418\ub294 \ud30c\uc77c BIO
BIO *bio_stdout = NULL; \/\/ \ud654\uba74\uc5d0 \ucd9c\ub825\ud560 stdout BIO
RSA *rsa = NULL; \/\/ RSA \uad6c\uc870\uccb4
printf(“\ud0a4 \uae38\uc774 \uc785\ub825 :”); \/\/ \ud0a4 \uae38\uc774 \uc785\ub825
scanf(“%d”, &keyLenInput);
printf(“\uc800\uc7a5\ud560 \uacf5\uac1c\ud0a4 \ud30c\uc77c \uc774\ub984 \uc785\ub825: “); \/\/ \uacf5\uac1c\ud0a4\ub97c \uc800\uc7a5\ud560 \ud30c\uc77c\uba85 \uc785\ub825
scanf(“%s”, outPublicKeyFile);
printf(“\uc800\uc7a5\ud560 \uac1c\uc778\ud0a4 \ud30c\uc77c \uc774\ub984 \uc785\ub825: “); \/\/ \uac1c\uc778\ud0a4\ub97c \uc800\uc7a5\ud560 \ud30c\uc77c\uba85 \uc785\ub825
scanf(“%s”, outPrivateKeyFile);
\/\/ \ud45c\uc900 \ud654\uba74 \ucd9c\ub825 BIO \uc0dd\uc131
if((bio_stdout = BIO_new(BIO_s_file())) != NULL) {
BIO_set_fp(bio_stdout, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
}
\/\/\uacf5\uac1c\ud0a4\ub97c \uc800\uc7a5\ud560 \ud30c\uc77c BIO \uc0dd\uc131
if((publicOut = BIO_new(BIO_s_file())) == NULL) {
printf(“BIO \uc0dd\uc131 \uc5d0\ub7ec. %s”, outPublicKeyFile);
exit(1);
}
\/\/ \uac1c\uc778\ud0a4\ub97c \uc800\uc7a5\ud560 \ud30c\uc77c BIO \uc0dd\uc131
if((privateOut = BIO_new(BIO_s_file())) == NULL) {
printf(“BIO \uc0dd\uc131 \uc5d0\ub7ec. %s”, outPublicKeyFile);
exit(1);
}
\/\/ \ud30c\uc77c BIO\uc640 \ud574\ub2f9 \uacf5\uac1c\ud0a4 \uc800\uc7a5\ud560 \ud30c\uc77c \uc5f0\uacb0
if(BIO_write_filename(publicOut, outPublicKeyFile) <= 0) {
printf(“BIO \uc0dd\uc131 \uc5d0\ub7ec. %s”, outPublicKeyFile);
exit(1);
}
\/\/ \ud30c\uc77c BIO\uc640 \ud574\ub2f9 \uac1c\uc778\ud0a4 \uc800\uc7a5\ud560 \ud30c\uc77c \uc5f0\uacb0
if(BIO_write_filename(privateOut, outPrivateKeyFile) <= 0) {
printf(“BIO \uc0dd\uc131 \uc5d0\ub7ec. %s”, outPrivateKeyFile);
exit(1);
}
RAND_status(); \/\/ seed \uc0dd\uc131, \uacf5\uae09
\/\/ \ud0a4 \uc0dd\uc131
rsa = RSA_generate_key(keyLenInput, RSA_F4, genrsa_cb, NULL);
if(isPem) {
\/\/ PEM \ud3ec\uba67\uc73c\ub85c \ud45c\uc900 \ud654\uba74 \ucd9c\ub825 BIO\uc5d0 \uacf5\uac1c\ud0a4 \ucd9c\ub825
if(!PEM_write_bio_RSA_PUBKEY(bio_stdout, rsa)) {
printf(“PEM \ud30c\uc77c \uc0dd\uc131 \uc5d0\ub7ec %s”, outPrivateKeyFile);
exit(1);
}
printf(“nn”);
\/\/ PEM \ud3ec\uba67\uc73c\ub85c \ud45c\uc900 \ud654\uba74 \ucd9c\ub825 BIO\uc5d0 \uac1c\uc778\ud0a4 \ucd9c\ub825
if(!PEM_write_bio_RSAPrivateKey(bio_stdout, rsa, NULL, NULL, 0, NULL, NULL)) {
printf(“PEM \ud30c\uc77c \uc0dd\uc131 \uc5d0\ub7ec %s”, outPrivateKeyFile);
exit(1);
}
\/\/ PEM \ud3ec\uba67\uc73c\ub85c \ud30c\uc77c BIO\uc5d0 \uacf5\uac1c\ud0a4 \ucd9c\ub825
if(!PEM_write_bio_RSA_PUBKEY(publicOut, rsa)) {
printf(“PEM \ud30c\uc77c \uc0dd\uc131 \uc5d0\ub7ec %s”, outPrivateKeyFile);
exit(1);
}
\/\/ PEM \ud3ec\uba67\uc73c\ub85c \ud30c\uc77c BIO\uc5d0 \uac1c\uc778\ud0a4 \ucd9c\ub825
if(!PEM_write_bio_RSAPrivateKey(privateOut, rsa, NULL, NULL, 0, NULL, NULL)) {
printf(“PEM \ud30c\uc77c \uc0dd\uc131 \uc5d0\ub7ec %s”, outPrivateKeyFile);
exit(1);
}
}
else { \/\/ \ub9cc\uc57d DEM \ud3ec\uba67\uc73c\ub85c \ud0a4 \uc30d\uc744 \ucd9c\ub825 \ud55c\ub2e4\uba74..
printf(“DEM PUBLIC KEYn”);
\/\/ DEM \ud3ec\uba67\uc73c\ub85c \ud45c\uc900 \ud654\uba74 \ucd9c\ub825 BIO\uc5d0 \uacf5\uac1c\ud0a4 \ucd9c\ub825
if(!i2d_RSA_PUBKEY_bio(bio_stdout, rsa)) {
printf(“DEM \ud30c\uc77c \uc0dd\uc131 \uc5d0\ub7ec %s”, outPrivateKeyFile);
exit(1);
}
printf(“nn”);
printf(“DER PRIVATE KEYn”);
printf(“n”);
\/\/ DEM \ud3ec\uba67\uc73c\ub85c \ud45c\uc900 \ud654\uba74 \ucd9c\ub825 BIO\uc5d0 \uac1c\uc778\ud0a4 \ucd9c\ub825
if(!i2d_RSAPrivateKey_bio(bio_stdout, rsa)) {
printf(“DEM \ud30c\uc77c \uc0dd\uc131 \uc5d0\ub7ec %s”, outPrivateKeyFile);
exit(1);
}
\/\/ DEM \ud3ec\uba67\uc73c\ub85c \ud30c\uc77c BIO\uc5d0 \uacf5\uac1c\ud0a4 \ucd9c\ub825
if(!i2d_RSA_PUBKEY_bio(publicOut, rsa)) {
printf(“DEM \ud30c\uc77c \uc0dd\uc131 \uc5d0\ub7ec %s”, outPrivateKeyFile);
exit(1);
}
\/\/ DEM \ud3ec\uba67\uc73c\ub85c \ud30c\uc77c BIO\uc5d0 \uac1c\uc778\ud0a4 \ucd9c\ub825
if(!i2d_RSAPrivateKey_bio(privateOut, rsa)) {
printf(“DEM \ud30c\uc77c \uc0dd\uc131 \uc5d0\ub7ec %s”, outPrivateKeyFile);
exit(1);
}
}
\/\/ RSA \uad6c\uc870\uccb4 \uba54\ubaa8\ub9ac\uc5d0\uc11c \uc0ad\uc81c
if(rsa != NULL)
RSA_free(rsa);
\/\/ BIO\ub97c \uba54\ubaa8\ub9ac\uc5d0\uc11c \uc0ad\uc81c
if(publicOut != NULL) BIO_free_all(publicOut);
if(privateOut != NULL) BIO_free_all(privateOut);
return 0;
}<\/p>\n
\/\/ \ucf5c\ubc31 \ud568\uc218
static void genrsa_cb(int p, int n, void *arg)
{
char c = ‘*’;
\/\/ prime number e \uc758 \uc0dd\uc131 \uacfc\uc815\uc744 \ud45c\uc2dc
if(p == 0) c = ‘.’;
if(p == 1) c = ‘+’;
if(p == 2) c = ‘*’;
if(p == 3) c = ‘n’;
printf(“%c”, c);
}<\/p>\n","protected":false},"excerpt":{"rendered":"
\/\/ enc_rsa.c\/\/ \/\/ Copyright 2009 Kim Sung-tae <pchero21@gmail.com>\/\/ \/\/ This program is free software; you can redistribute it and\/or modify\/\/ it under the terms of the GNU General … Continue reading