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(heim_ntlm_build_ntlm1_master): calculate the ntlm version 1 "master" key.

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@19423 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2006-12-18 21:22:09 +00:00
parent f280e31a6b
commit 276d560deb
1 changed files with 52 additions and 5 deletions
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57
lib/ntlm/ntlm.c
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@@ -599,8 +599,10 @@ heim_ntlm_encode_type3(struct ntlm_type3 *type3, struct ntlm_buf *data)
memset(&sessionkey, 0, sizeof(sessionkey));
base = 52;
if (type3->sessionkey.length)
base += 8;
if (type3->sessionkey.length) {
base += 8; /* sessionkey sec buf */
base += 4; /* flags */
}
if (type3->os[0]) {
base += 8;
}
@@ -629,6 +631,10 @@ heim_ntlm_encode_type3(struct ntlm_type3 *type3, struct ntlm_buf *data)
ws.length = len_string(ucs2, type3->ws);
ws.allocated = ws.length;
sessionkey.offset = ws.offset + ws.allocated;
sessionkey.length = type3->sessionkey.length;
sessionkey.allocated = type3->sessionkey.length;
out = krb5_storage_emem();
if (out == NULL)
return ENOMEM;
@@ -643,10 +649,12 @@ heim_ntlm_encode_type3(struct ntlm_type3 *type3, struct ntlm_buf *data)
CHECK(store_sec_buffer(out, &target), 0);
CHECK(store_sec_buffer(out, &username), 0);
CHECK(store_sec_buffer(out, &ws), 0);
#if 0
/* optional */
CHECK(store_sec_buffer(out, &sessionkey), 0);
CHECK(krb5_store_uint32(out, type3->flags), 0);
if (type3->sessionkey.length) {
CHECK(store_sec_buffer(out, &sessionkey), 0);
CHECK(krb5_store_uint32(out, type3->flags), 0);
}
#if 0
CHECK(krb5_store_uint32(out, 0), 0); /* os0 */
CHECK(krb5_store_uint32(out, 0), 0); /* os1 */
#endif
@@ -658,6 +666,7 @@ heim_ntlm_encode_type3(struct ntlm_type3 *type3, struct ntlm_buf *data)
CHECK(put_string(out, ucs2, type3->targetname), 0);
CHECK(put_string(out, ucs2, type3->username), 0);
CHECK(put_string(out, ucs2, type3->ws), 0);
CHECK(put_buf(out, &type3->sessionkey), 0);
{
krb5_data d;
@@ -756,3 +765,41 @@ heim_ntlm_calculate_ntlm1(void *key, size_t len,
return 0;
}
int
heim_ntlm_build_ntlm1_master(void *key, size_t len,
struct ntlm_buf *master)
{
unsigned char sessionkey[MD4_DIGEST_LENGTH];
unsigned char masterkey[MD4_DIGEST_LENGTH];
MD4_CTX ctx;
RC4_KEY rc4;
if (len != MD4_DIGEST_LENGTH)
return EINVAL;
master->length = MD4_DIGEST_LENGTH;
master->data = malloc(master->length);
if (master->data == NULL)
return ENOMEM;
MD4_Init(&ctx);
MD4_Update(&ctx, key, len);
MD4_Final(sessionkey, &ctx);
RC4_set_key(&rc4, sizeof(sessionkey), sessionkey);
if (RAND_bytes(masterkey, sizeof(masterkey)) != 1) {
free(master->data);
master->data = NULL;
master->length = 0;
return EINVAL;
}
RC4(&rc4, master->length, masterkey, master->data);
memset(&rc4, 0, sizeof(rc4));
return 0;
}