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Heimdal NTLM library


Functions

void heim_ntlm_free_buf (struct ntlm_buf *p)
void heim_ntlm_free_targetinfo (struct ntlm_targetinfo *ti)
int heim_ntlm_encode_targetinfo (const struct ntlm_targetinfo *ti, int ucs2, struct ntlm_buf *data)
int heim_ntlm_decode_targetinfo (const struct ntlm_buf *data, int ucs2, struct ntlm_targetinfo *ti)
void heim_ntlm_free_type1 (struct ntlm_type1 *data)
int heim_ntlm_encode_type1 (const struct ntlm_type1 *type1, struct ntlm_buf *data)
void heim_ntlm_free_type2 (struct ntlm_type2 *data)
int heim_ntlm_encode_type2 (const struct ntlm_type2 *type2, struct ntlm_buf *data)
void heim_ntlm_free_type3 (struct ntlm_type3 *data)
int heim_ntlm_encode_type3 (const struct ntlm_type3 *type3, struct ntlm_buf *data)
int heim_ntlm_nt_key (const char *password, struct ntlm_buf *key)
int heim_ntlm_calculate_ntlm1 (void *key, size_t len, unsigned char challange[8], struct ntlm_buf *answer)
int heim_ntlm_build_ntlm1_master (void *key, size_t len, struct ntlm_buf *session, struct ntlm_buf *master)
int heim_ntlm_ntlmv2_key (const void *key, size_t len, const char *username, const char *target, unsigned char ntlmv2[16])
int heim_ntlm_calculate_ntlm2 (const void *key, size_t len, const char *username, const char *target, const unsigned char serverchallange[8], const struct ntlm_buf *infotarget, unsigned char ntlmv2[16], struct ntlm_buf *answer)
int heim_ntlm_verify_ntlm2 (const void *key, size_t len, const char *username, const char *target, time_t now, const unsigned char serverchallange[8], const struct ntlm_buf *answer, struct ntlm_buf *infotarget, unsigned char ntlmv2[16])

Detailed Description

The NTLM core functions implement the string2key generation function, message encode and decode function, and the hash function functions.

Function Documentation

int heim_ntlm_build_ntlm1_master ( void *  key,
size_t  len,
struct ntlm_buf session,
struct ntlm_buf master 
)

Generates an NTLMv1 session random with assosited session master key.

Parameters:
key the ntlm v1 key
len length of key
session generated session nonce, should be freed with heim_ntlm_free_buf().
master calculated session master key, should be freed with heim_ntlm_free_buf().
Returns:
In case of success 0 is return, an errors, a errno in what went wrong.

int heim_ntlm_calculate_ntlm1 ( void *  key,
size_t  len,
unsigned char  challange[8],
struct ntlm_buf answer 
)

Calculate NTLMv1 response hash

Parameters:
key the ntlm v1 key
len length of key
challange sent by the server
answer calculated answer, should be freed with heim_ntlm_free_buf().
Returns:
In case of success 0 is return, an errors, a errno in what went wrong.

int heim_ntlm_calculate_ntlm2 ( const void *  key,
size_t  len,
const char *  username,
const char *  target,
const unsigned char  serverchallange[8],
const struct ntlm_buf infotarget,
unsigned char  ntlmv2[16],
struct ntlm_buf answer 
)

Calculate NTLMv2 response

Parameters:
key the ntlm key
len length of key
username name of the user, as sent in the message, assumed to be in UTF8.
target the name of the target, assumed to be in UTF8.
serverchallange challange as sent by the server in the type2 message.
infotarget infotarget as sent by the server in the type2 message.
ntlmv2 calculated session key
answer ntlm response answer, should be freed with heim_ntlm_free_buf().
Returns:
In case of success 0 is return, an errors, a errno in what went wrong.

int heim_ntlm_decode_targetinfo ( const struct ntlm_buf data,
int  ucs2,
struct ntlm_targetinfo ti 
)

Decodes an NTLM targetinfo message

Parameters:
data input data buffer with the encode NTLM targetinfo message
ucs2 if the strings should be encoded with ucs2 (selected by flag in message).
ti the decoded target info, should be freed with heim_ntlm_free_targetinfo().
Returns:
In case of success 0 is return, an errors, a errno in what went wrong.

int heim_ntlm_encode_targetinfo ( const struct ntlm_targetinfo ti,
int  ucs2,
struct ntlm_buf data 
)

Encodes a ntlm_targetinfo message.

Parameters:
ti the ntlm_targetinfo message to encode.
ucs2 if the strings should be encoded with ucs2 (selected by flag in message).
data is the return buffer with the encoded message, should be freed with heim_ntlm_free_buf().
Returns:
In case of success 0 is return, an errors, a errno in what went wrong.

int heim_ntlm_encode_type1 ( const struct ntlm_type1 type1,
struct ntlm_buf data 
)

Encodes an ntlm_type1 message.

Parameters:
type1 the ntlm_type1 message to encode.
data is the return buffer with the encoded message, should be freed with heim_ntlm_free_buf().
Returns:
In case of success 0 is return, an errors, a errno in what went wrong.

int heim_ntlm_encode_type2 ( const struct ntlm_type2 type2,
struct ntlm_buf data 
)

Encodes an ntlm_type2 message.

Parameters:
type2 the ntlm_type2 message to encode.
data is the return buffer with the encoded message, should be freed with heim_ntlm_free_buf().
Returns:
In case of success 0 is return, an errors, a errno in what went wrong.

int heim_ntlm_encode_type3 ( const struct ntlm_type3 type3,
struct ntlm_buf data 
)

Encodes an ntlm_type3 message.

Parameters:
type3 the ntlm_type3 message to encode.
data is the return buffer with the encoded message, should be freed with heim_ntlm_free_buf().
Returns:
In case of success 0 is return, an errors, a errno in what went wrong.

void heim_ntlm_free_buf ( struct ntlm_buf p  ) 

heim_ntlm_free_buf frees the ntlm buffer

Parameters:
p buffer to be freed

void heim_ntlm_free_targetinfo ( struct ntlm_targetinfo ti  ) 

Frees the ntlm_targetinfo message

Parameters:
ti targetinfo to be freed

void heim_ntlm_free_type1 ( struct ntlm_type1 data  ) 

Frees the ntlm_type1 message

Parameters:
data message to be freed

void heim_ntlm_free_type2 ( struct ntlm_type2 data  ) 

Frees the ntlm_type2 message

Parameters:
data message to be freed

void heim_ntlm_free_type3 ( struct ntlm_type3 data  ) 

Frees the ntlm_type3 message

Parameters:
data message to be freed

int heim_ntlm_nt_key ( const char *  password,
struct ntlm_buf key 
)

Calculate the NTLM key, the password is assumed to be in UTF8.

Parameters:
password password to calcute the key for.
key calcuted key, should be freed with heim_ntlm_free_buf().
Returns:
In case of success 0 is return, an errors, a errno in what went wrong.

int heim_ntlm_ntlmv2_key ( const void *  key,
size_t  len,
const char *  username,
const char *  target,
unsigned char  ntlmv2[16] 
)

Generates an NTLMv2 session key.

Parameters:
key the ntlm key
len length of key
username name of the user, as sent in the message, assumed to be in UTF8.
target the name of the target, assumed to be in UTF8.
ntlmv2 the ntlmv2 session key
Returns:
0 on success, or an error code on failure.

int heim_ntlm_verify_ntlm2 ( const void *  key,
size_t  len,
const char *  username,
const char *  target,
time_t  now,
const unsigned char  serverchallange[8],
const struct ntlm_buf answer,
struct ntlm_buf infotarget,
unsigned char  ntlmv2[16] 
)

Verify NTLMv2 response.

Parameters:
key the ntlm key
len length of key
username name of the user, as sent in the message, assumed to be in UTF8.
target the name of the target, assumed to be in UTF8.
now the time now (0 if the library should pick it up itself)
serverchallange challange as sent by the server in the type2 message.
answer ntlm response answer, should be freed with heim_ntlm_free_buf().
infotarget infotarget as sent by the server in the type2 message.
ntlmv2 calculated session key
Returns:
In case of success 0 is return, an errors, a errno in what went wrong.


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