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mschaputil: Move generator of the hash of the pwd hash

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Tim Kourt 2019-01-10 14:34:22 -08:00 committed by Denis Kenzior
parent c8f071c67c
commit 3a71cf458b
3 changed files with 28 additions and 8 deletions
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10
src/eap-mschapv2.c
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@ -331,18 +331,12 @@ static void eap_mschapv2_handle_success(struct eap_state *eap,
uint8_t master_key[16]; uint8_t master_key[16];
uint8_t session_key[32]; uint8_t session_key[32];
char authenticator_resp[42]; char authenticator_resp[42];
struct l_checksum *check;
bool ret; bool ret;
uint8_t buffer[5 + 1]; uint8_t buffer[5 + 1];
check = l_checksum_new(L_CHECKSUM_MD4); mschapv2_hash_nt_password_hash(state->password_hash,
if (!check) password_hash_hash);
goto err;
l_checksum_update(check, state->password_hash, 16);
l_checksum_get_digest(check, password_hash_hash, 16);
l_checksum_free(check);
ret = mschapv2_generate_nt_response(state->password_hash, ret = mschapv2_generate_nt_response(state->password_hash,
state->peer_challenge, state->peer_challenge,

24
src/mschaputil.c
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@ -201,6 +201,30 @@ bool mschapv2_generate_nt_response(const uint8_t password_hash[static 16],
return true; return true;
} }
/**
* Generate the hash of the password hash
*
* @password_hash: The hash of the password
* @password_hash_hash: The MD4 hash of the password hash
*
* Returns: true on success, false if hash/encrypt couldn't be done
**/
bool mschapv2_hash_nt_password_hash(const uint8_t password_hash[static 16],
uint8_t password_hash_hash[static 16])
{
struct l_checksum *check;
check = l_checksum_new(L_CHECKSUM_MD4);
if (!check)
return false;
l_checksum_update(check, password_hash, 16);
l_checksum_get_digest(check, password_hash_hash, 16);
l_checksum_free(check);
return true;
}
/** /**
* Generate the mschapv2 authenticator response for verifying authenticator * Generate the mschapv2 authenticator response for verifying authenticator
* This function is specified in: * This function is specified in:

2
src/mschaputil.h
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@ -26,6 +26,8 @@ bool mschap_challenge_response(const uint8_t *challenge,
const uint8_t *password_hash, const uint8_t *password_hash,
uint8_t *response); uint8_t *response);
bool mschap_nt_password_hash(const char *password, uint8_t *password_hash); bool mschap_nt_password_hash(const char *password, uint8_t *password_hash);
bool mschapv2_hash_nt_password_hash(const uint8_t password_hash[static 16],
uint8_t password_hash_hash[static 16]);
bool mschapv2_generate_nt_response(const uint8_t password_hash[static 16], bool mschapv2_generate_nt_response(const uint8_t password_hash[static 16],
const uint8_t peer_challenge[static 16], const uint8_t peer_challenge[static 16],