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34 #include <krb5_locl.h>
36 RCSID("$Id: mk_req_ext.c 19511 2006-12-27 12:07:22Z lha $");
39 _krb5_mk_req_internal(krb5_context context,
40 krb5_auth_context *auth_context,
41 const krb5_flags ap_req_options,
45 krb5_key_usage checksum_usage,
46 krb5_key_usage encrypt_usage)
49 krb5_data authenticator;
55 if(*auth_context == NULL)
56 ret = krb5_auth_con_init(context, auth_context);
61 ret = krb5_auth_con_init(context, &ac);
65 if(ac->local_subkey == NULL && (ap_req_options & AP_OPTS_USE_SUBKEY)) {
66 ret = krb5_auth_con_generatelocalsubkey(context,
73 krb5_free_keyblock(context, ac->keyblock);
74 ret = krb5_copy_keyblock(context, &in_creds->session, &ac->keyblock);
78 /* it's unclear what type of checksum we can use. try the best one, except:
79 * a) if it's configured differently for the current realm, or
80 * b) if the session key is des-cbc-crc
84 if(ac->keyblock->keytype == ETYPE_DES_CBC_CRC) {
85 /* this is to make DCE secd (and older MIT kdcs?) happy */
86 ret = krb5_create_checksum(context,
93 } else if(ac->keyblock->keytype == ETYPE_ARCFOUR_HMAC_MD5 ||
94 ac->keyblock->keytype == ETYPE_ARCFOUR_HMAC_MD5_56 ||
95 ac->keyblock->keytype == ETYPE_DES_CBC_MD4 ||
96 ac->keyblock->keytype == ETYPE_DES_CBC_MD5) {
97 /* this is to make MS kdc happy */
98 ret = krb5_create_checksum(context,
108 ret = krb5_crypto_init(context, ac->keyblock, 0, &crypto);
111 ret = krb5_create_checksum(context,
118 krb5_crypto_destroy(context, crypto);
128 ret = krb5_build_authenticator (context,
130 ac->keyblock->keytype,
137 free_Checksum (c_opt);
141 ret = krb5_build_ap_req (context, ac->keyblock->keytype,
142 in_creds, ap_req_options, authenticator, outbuf);
144 if(auth_context == NULL)
145 krb5_auth_con_free(context, ac);
149 krb5_error_code KRB5_LIB_FUNCTION
150 krb5_mk_req_extended(krb5_context context,
151 krb5_auth_context *auth_context,
152 const krb5_flags ap_req_options,
154 krb5_creds *in_creds,
157 return _krb5_mk_req_internal (context,
163 KRB5_KU_AP_REQ_AUTH_CKSUM,
164 KRB5_KU_AP_REQ_AUTH);