GSSAPI(3) UNIX Programmer's Manual GSSAPI(3) NNAAMMEE ggssssaappii - Generic Security Service Application Program Interface library LLIIBBRRAARRYY GSS-API Library (libgssapi, -lgssapi) DDEESSCCRRIIPPTTIIOONN The Generic Security Service Application Program Interface (GSS-API) pro- vides security services to callers in a generic fashion, supportable with a range of underlying mechanisms and technologies and hence allowing source-level portability of applications to different environments. LLIISSTT OOFF FFUUNNCCTTIIOONNSS These functions constitute the gssapi library, _l_i_b_g_s_s_a_p_i. Declarations for these functions may be obtained from the include file _g_s_s_a_p_i_._h. _N_a_m_e_/_P_a_g_e _D_e_s_c_r_i_p_t_i_o_n gss_accept_sec_context.3 gss_acquire_cred.3 gss_add_cred.3 gss_add_oid_set_member.3 gss_canonicalize_name.3 gss_compare_name.3 gss_context_time.3 gss_create_empty_oid_set.3 gss_delete_sec_context.3 gss_display_name.3 gss_display_status.3 gss_duplicate_name.3 gss_export_name.3 gss_export_sec_context.3 gss_get_mic.3 gss_import_name.3 gss_import_sec_context.3 gss_indicate_mechs.3 gss_init_sec_context.3 gss_inquire_context.3 gss_inquire_cred.3 gss_inquire_cred_by_mech.3 gss_inquire_mechs_for_name.3 gss_inquire_names_for_mech.3 gss_krb5_copy_ccache.3 gss_process_context_token.3 gss_release_buffer.3 gss_release_cred.3 gss_release_name.3 gss_release_oid_set.3 gss_seal.3 gss_sign.3 gss_test_oid_set_member.3 gss_unseal.3 gss_unwrap.3 gss_verify.3 gss_verify_mic.3 gss_wrap.3 gss_wrap_size_limit.3 CCOOMMPPAATTIIBBIILLIITTYY The HHeeiimmddaall GSS-API implementation had a bug in releases before 0.6 that made it fail to inter-operate when using DES3 with other GSS-API imple- mentations when using ggssss__ggeett__mmiicc() / ggssss__vveerriiffyy__mmiicc(). Its possible to modify the behavior of the generator of the MIC with the _k_r_b_5_._c_o_n_f con- figuration file so that old clients/servers will still work. New clients/servers will try both the old and new MIC in Heimdal 0.6. In 0.7 it will check only if configured and the compatibility code will be removed in 0.8. Heimdal 0.6 still generates by default the broken GSS-API DES3 mic, this will change in 0.7 to generate correct des3 mic. To turn on compatibility with older clients and servers, change the [[ggssssaappii]] _b_r_o_k_e_n___d_e_s_3___m_i_c in _k_r_b_5_._c_o_n_f that contains a list of globbing expressions that will be matched against the server name. To turn off generation of the old (incompatible) mic of the MIC use [[ggssssaappii]] _c_o_r_r_e_c_t___d_e_s_3___m_i_c. If a match for a entry is in both [[ggssssaappii]] _c_o_r_r_e_c_t___d_e_s_3___m_i_c and [[ggssssaappii]] _c_o_r_r_e_c_t___d_e_s_3___m_i_c, the later will override. This config option modifies behaviour for both clients and servers. Example: [gssapi] broken_des3_mic = cvs/*@SU.SE broken_des3_mic = host/*@E.KTH.SE correct_des3_mic = host/*@SU.SE BBUUGGSS All of 0.5.x versions of hheeiimmddaall had broken token delegations in the client side, the server side was correct. SSEEEE AALLSSOO krb5(3), krb5.conf(5), kerberos(8) BSD Experimental January 23, 2003 2