diff --git a/configure.ac b/configure.ac index a413b75..f36c71b 100644 --- a/configure.ac +++ b/configure.ac @@ -339,11 +339,25 @@ then AC_LIBOBJ([http-ntlm]) fi else - dnl If SSL is unavailable and the user explicitly requested NTLM, - dnl abort. - if test x"$ENABLE_NTLM" = xyes + AC_CHECK_LIB(nettle, nettle_md4_init, [with_nettle=yes; AC_SUBST(NETTLE_LIBS, "-lnettle") AC_DEFINE([WITH_NETTLE], [1], [Use libnettle])], [with_nettle=no; AC_MSG_WARN(*** libnettle was not found. You will not be able to use NTLM)]) + AM_CONDITIONAL([WITH_NETTLE], [test "x$with_nettle" = "xyes"]) + + if test x"$with_nettle" = xyes then - AC_MSG_ERROR([NTLM authorization requested and OpenSSL not found; aborting]) + if test x"$ENABLE_NTLM" != xno + then + AC_DEFINE([ENABLE_NTLM], 1, + [Define if you want the NTLM authorization support compiled in.]) + AC_LIBOBJ([http-ntlm]) + LIBS="$NETTLE_LIBS $LIBS" + fi + else + dnl If SSL is unavailable and the user explicitly requested NTLM, + dnl abort. + if test x"$ENABLE_NTLM" = xyes + then + AC_MSG_ERROR([NTLM authorization requested and SSL not enabled; aborting]) + fi fi fi diff --git a/src/http-ntlm.c b/src/http-ntlm.c index 86eca66..63b1262 100644 --- a/src/http-ntlm.c +++ b/src/http-ntlm.c @@ -42,27 +42,33 @@ as that of the covered work. */ #include #include -#include -#include -#include - #include "utils.h" #include "http-ntlm.h" -#if OPENSSL_VERSION_NUMBER < 0x00907001L -#define DES_key_schedule des_key_schedule -#define DES_cblock des_cblock -#define DES_set_odd_parity des_set_odd_parity -#define DES_set_key des_set_key -#define DES_ecb_encrypt des_ecb_encrypt - -/* This is how things were done in the old days */ -#define DESKEY(x) x -#define DESKEYARG(x) x +#ifdef WITH_NETTLE +# include +# include #else -/* Modern version */ -#define DESKEYARG(x) *x -#define DESKEY(x) &x +# include +# include +# include + +# if OPENSSL_VERSION_NUMBER < 0x00907001L +# define DES_key_schedule des_key_schedule +# define DES_cblock des_cblock +# define DES_set_odd_parity des_set_odd_parity +# define DES_set_key des_set_key +# define DES_ecb_encrypt des_ecb_encrypt + + /* This is how things were done in the old days */ +# define DESKEY(x) x +# define DESKEYARG(x) x +# else + /* Modern version */ +# define DESKEYARG(x) *x +# define DESKEY(x) &x +# endif + #endif /* Define this to make the type-3 message include the NT response message */ @@ -176,6 +182,25 @@ ntlm_input (struct ntlmdata *ntlm, const char *header) * Turns a 56 bit key into the 64 bit, odd parity key and sets the key. The * key schedule ks is also set. */ +#ifdef WITH_NETTLE +static void +setup_des_key(unsigned char *key_56, + struct des_ctx *des) +{ + unsigned char key[8]; + + key[0] = key_56[0]; + key[1] = ((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1); + key[2] = ((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2); + key[3] = ((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3); + key[4] = ((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4); + key[5] = ((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5); + key[6] = ((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6); + key[7] = (key_56[6] << 1) & 0xFF; + + nettle_des_set_key(des, key); +} +#else static void setup_des_key(unsigned char *key_56, DES_key_schedule DESKEYARG(ks)) @@ -194,7 +219,7 @@ setup_des_key(unsigned char *key_56, DES_set_odd_parity(&key); DES_set_key(&key, ks); } - +#endif /* * takes a 21 byte array and treats it as 3 56-bit DES keys. The * 8 byte plaintext is encrypted with each key and the resulting 24 @@ -203,6 +228,18 @@ setup_des_key(unsigned char *key_56, static void calc_resp(unsigned char *keys, unsigned char *plaintext, unsigned char *results) { +#ifdef WITH_NETTLE + struct des_ctx des; + + setup_des_key(keys, &des); + nettle_des_encrypt(&des, 8, results, plaintext); + + setup_des_key(keys + 7, &des); + nettle_des_encrypt(&des, 8, results + 8, plaintext); + + setup_des_key(keys + 14, &des); + nettle_des_encrypt(&des, 8, results + 16, plaintext); +#else DES_key_schedule ks; setup_des_key(keys, DESKEY(ks)); @@ -216,6 +253,7 @@ calc_resp(unsigned char *keys, unsigned char *plaintext, unsigned char *results) setup_des_key(keys+14, DESKEY(ks)); DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results+16), DESKEY(ks), DES_ENCRYPT); +#endif } /* @@ -255,6 +293,15 @@ mkhash(const char *password, { /* create LanManager hashed password */ +#ifdef WITH_NETTLE + struct des_ctx des; + + setup_des_key(pw, &des); + nettle_des_encrypt(&des, 8, lmbuffer, magic); + + setup_des_key(pw + 7, &des); + nettle_des_encrypt(&des, 8, lmbuffer + 8, magic); +#else DES_key_schedule ks; setup_des_key(pw, DESKEY(ks)); @@ -264,7 +311,7 @@ mkhash(const char *password, setup_des_key(pw+7, DESKEY(ks)); DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)(lmbuffer+8), DESKEY(ks), DES_ENCRYPT); - +#endif memset(lmbuffer+16, 0, 5); } /* create LM responses */ @@ -272,8 +319,11 @@ mkhash(const char *password, #ifdef USE_NTRESPONSES { - /* create NT hashed password */ +#ifdef WITH_NETTLE + struct md4_ctx MD4; +#else MD4_CTX MD4; +#endif len = strlen(password); @@ -282,9 +332,16 @@ mkhash(const char *password, pw[2*i+1] = 0; } +#ifdef WITH_NETTLE + nettle_md4_init(&MD4); + nettle_md4_update(&MD4, 2*len, pw); + nettle_md4_digest(&MD4, MD4_DIGEST_SIZE, ntbuffer); +#else + /* create NT hashed password */ MD4_Init(&MD4); MD4_Update(&MD4, pw, 2*len); MD4_Final(ntbuffer, &MD4); +#endif memset(ntbuffer+16, 0, 5); }