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-rw-r--r--source4/dsdb/samdb/ldb_modules/password_hash.c161
1 files changed, 69 insertions, 92 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/password_hash.c b/source4/dsdb/samdb/ldb_modules/password_hash.c
index 8dd4e1e76b..9996e89cc6 100644
--- a/source4/dsdb/samdb/ldb_modules/password_hash.c
+++ b/source4/dsdb/samdb/ldb_modules/password_hash.c
@@ -140,6 +140,9 @@ struct setup_password_fields_io {
struct samr_Password *nt_history;
uint32_t lm_history_len;
struct samr_Password *lm_history;
+ const char *salt;
+ DATA_BLOB des_md5;
+ DATA_BLOB des_crc;
struct ldb_val supplemental;
NTTIME last_set;
uint32_t kvno;
@@ -216,21 +219,12 @@ static int setup_lm_fields(struct setup_password_fields_io *io)
return LDB_SUCCESS;
}
-static int setup_primary_kerberos(struct setup_password_fields_io *io,
- const struct supplementalCredentialsBlob *old_scb,
- struct package_PrimaryKerberosBlob *pkb)
+static int setup_kerberos_keys(struct setup_password_fields_io *io)
{
krb5_error_code krb5_ret;
Principal *salt_principal;
krb5_salt salt;
krb5_keyblock key;
- uint32_t k=0;
- struct package_PrimaryKerberosCtr3 *pkb3 = &pkb->ctr.ctr3;
- struct supplementalCredentialsPackage *old_scp = NULL;
- struct package_PrimaryKerberosBlob _old_pkb;
- struct package_PrimaryKerberosCtr3 *old_pkb3 = NULL;
- uint32_t i;
- enum ndr_err_code ndr_err;
/* Many, many thanks to lukeh@padl.com for this
* algorithm, described in his Nov 10 2004 mail to
@@ -290,7 +284,7 @@ static int setup_primary_kerberos(struct setup_password_fields_io *io,
}
if (krb5_ret) {
ldb_asprintf_errstring(io->ac->module->ldb,
- "setup_primary_kerberos: "
+ "setup_kerberos_keys: "
"generation of a salting principal failed: %s",
smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
return LDB_ERR_OPERATIONS_ERROR;
@@ -304,131 +298,107 @@ static int setup_primary_kerberos(struct setup_password_fields_io *io,
krb5_free_principal(io->smb_krb5_context->krb5_context, salt_principal);
if (krb5_ret) {
ldb_asprintf_errstring(io->ac->module->ldb,
- "setup_primary_kerberos: "
+ "setup_kerberos_keys: "
"generation of krb5_salt failed: %s",
smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
return LDB_ERR_OPERATIONS_ERROR;
}
/* create a talloc copy */
- pkb3->salt.string = talloc_strndup(io->ac,
- salt.saltvalue.data,
- salt.saltvalue.length);
+ io->g.salt = talloc_strndup(io->ac,
+ salt.saltvalue.data,
+ salt.saltvalue.length);
krb5_free_salt(io->smb_krb5_context->krb5_context, salt);
- if (!pkb3->salt.string) {
- ldb_oom(io->ac->module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
- }
- salt.saltvalue.data = discard_const(pkb3->salt.string);
- salt.saltvalue.length = strlen(pkb3->salt.string);
-
- /*
- * prepare generation of keys
- *
- * ENCTYPE_AES256_CTS_HMAC_SHA1_96 (disabled by default)
- * ENCTYPE_DES_CBC_MD5
- * ENCTYPE_DES_CBC_CRC
- *
- * NOTE: update num_keys when you add another enctype!
- */
- pkb3->num_keys = 3;
- pkb3->keys = talloc_array(io->ac, struct package_PrimaryKerberosKey, pkb3->num_keys);
- if (!pkb3->keys) {
+ if (!io->g.salt) {
ldb_oom(io->ac->module->ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
+ salt.saltvalue.data = discard_const(io->g.salt);
+ salt.saltvalue.length = strlen(io->g.salt);
- if (lp_parm_bool(ldb_get_opaque(io->ac->module->ldb, "loadparm"), NULL, "password_hash", "create_aes_key", false)) {
- /*
- * TODO:
- *
- * w2k and w2k3 doesn't support AES, so we'll not include
- * the AES key here yet.
- *
- * Also we don't have an example supplementalCredentials blob
- * from Windows Longhorn Server with AES support
- *
- */
/*
- * create ENCTYPE_AES256_CTS_HMAC_SHA1_96 key out of
+ * create ENCTYPE_DES_CBC_MD5 key out of
* the salt and the cleartext password
*/
krb5_ret = krb5_string_to_key_salt(io->smb_krb5_context->krb5_context,
- ENCTYPE_AES256_CTS_HMAC_SHA1_96,
+ ENCTYPE_DES_CBC_MD5,
io->n.cleartext,
salt,
&key);
- pkb3->keys[k].keytype = ENCTYPE_AES256_CTS_HMAC_SHA1_96;
- pkb3->keys[k].value = talloc(pkb3->keys, DATA_BLOB);
- if (!pkb3->keys[k].value) {
- krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
- ldb_oom(io->ac->module->ldb);
+ if (krb5_ret) {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_kerberos_keys: "
+ "generation of a des-cbc-md5 key failed: %s",
+ smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
return LDB_ERR_OPERATIONS_ERROR;
}
- *pkb3->keys[k].value = data_blob_talloc(pkb3->keys[k].value,
- key.keyvalue.data,
- key.keyvalue.length);
+ io->g.des_md5 = data_blob_talloc(io->ac,
+ key.keyvalue.data,
+ key.keyvalue.length);
krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
- if (!pkb3->keys[k].value->data) {
+ if (!io->g.des_md5.data) {
ldb_oom(io->ac->module->ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
- k++;
-}
/*
- * create ENCTYPE_DES_CBC_MD5 key out of
+ * create ENCTYPE_DES_CBC_CRC key out of
* the salt and the cleartext password
*/
krb5_ret = krb5_string_to_key_salt(io->smb_krb5_context->krb5_context,
- ENCTYPE_DES_CBC_MD5,
+ ENCTYPE_DES_CBC_CRC,
io->n.cleartext,
salt,
&key);
- pkb3->keys[k].keytype = ENCTYPE_DES_CBC_MD5;
- pkb3->keys[k].value = talloc(pkb3->keys, DATA_BLOB);
- if (!pkb3->keys[k].value) {
- krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
- ldb_oom(io->ac->module->ldb);
+ if (krb5_ret) {
+ ldb_asprintf_errstring(io->ac->module->ldb,
+ "setup_kerberos_keys: "
+ "generation of a des-cbc-crc key failed: %s",
+ smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
return LDB_ERR_OPERATIONS_ERROR;
}
- *pkb3->keys[k].value = data_blob_talloc(pkb3->keys[k].value,
- key.keyvalue.data,
- key.keyvalue.length);
+ io->g.des_crc = data_blob_talloc(io->ac,
+ key.keyvalue.data,
+ key.keyvalue.length);
krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
- if (!pkb3->keys[k].value->data) {
+ if (!io->g.des_crc.data) {
ldb_oom(io->ac->module->ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
- k++;
+
+ return LDB_SUCCESS;
+}
+
+static int setup_primary_kerberos(struct setup_password_fields_io *io,
+ const struct supplementalCredentialsBlob *old_scb,
+ struct package_PrimaryKerberosBlob *pkb)
+{
+ struct package_PrimaryKerberosCtr3 *pkb3 = &pkb->ctr.ctr3;
+ struct supplementalCredentialsPackage *old_scp = NULL;
+ struct package_PrimaryKerberosBlob _old_pkb;
+ struct package_PrimaryKerberosCtr3 *old_pkb3 = NULL;
+ uint32_t i;
+ enum ndr_err_code ndr_err;
/*
- * create ENCTYPE_DES_CBC_CRC key out of
- * the salt and the cleartext password
+ * prepare generation of keys
+ *
+ * ENCTYPE_DES_CBC_MD5
+ * ENCTYPE_DES_CBC_CRC
*/
- krb5_ret = krb5_string_to_key_salt(io->smb_krb5_context->krb5_context,
- ENCTYPE_DES_CBC_CRC,
- io->n.cleartext,
- salt,
- &key);
- pkb3->keys[k].keytype = ENCTYPE_DES_CBC_CRC;
- pkb3->keys[k].value = talloc(pkb3->keys, DATA_BLOB);
- if (!pkb3->keys[k].value) {
- krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
- ldb_oom(io->ac->module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
- }
- *pkb3->keys[k].value = data_blob_talloc(pkb3->keys[k].value,
- key.keyvalue.data,
- key.keyvalue.length);
- krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
- if (!pkb3->keys[k].value->data) {
+ pkb3->salt.string = io->g.salt;
+ pkb3->num_keys = 2;
+ pkb3->keys = talloc_array(io->ac,
+ struct package_PrimaryKerberosKey,
+ pkb3->num_keys);
+ if (!pkb3->keys) {
ldb_oom(io->ac->module->ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
- k++;
- /* fix up key number */
- pkb3->num_keys = k;
+ pkb3->keys[0].keytype = ENCTYPE_DES_CBC_MD5;
+ pkb3->keys[0].value = &io->g.des_md5;
+ pkb3->keys[1].keytype = ENCTYPE_DES_CBC_CRC;
+ pkb3->keys[1].value = &io->g.des_crc;
/* initialize the old keys to zero */
pkb3->num_old_keys = 0;
@@ -1110,6 +1080,13 @@ static int setup_password_fields(struct setup_password_fields_io *io)
}
}
+ if (io->n.cleartext) {
+ ret = setup_kerberos_keys(io);
+ if (ret != 0) {
+ return ret;
+ }
+ }
+
ret = setup_nt_fields(io);
if (ret != 0) {
return ret;
generated by cgit (git 2.34.1) at 2024-10-30 00:10:03 +0000