NAME    [Toc]    [Back]

     krb5_auth_context, krb5_auth_con_init, krb5_auth_con_free,
     krb5_auth_con_setflags, krb5_auth_con_getflags, krb5_auth_con_setaddrs,
     krb5_auth_con_setaddrs_from_fd, krb5_auth_con_getaddrs,
     krb5_auth_con_genaddrs, krb5_auth_con_getkey, krb5_auth_con_setkey,
     krb5_auth_con_getuserkey, krb5_auth_con_setuserkey,
     krb5_auth_con_getlocalsubkey, krb5_auth_con_setlocalsubkey,
     krb5_auth_con_getremotesubkey, krb5_auth_con_setremotesubkey,
     krb5_auth_setcksumtype, krb5_auth_getcksumtype, krb5_auth_setkeytype,
     krb5_auth_getkeytype, krb5_auth_getlocalseqnumber,
     krb5_auth_setlocalseqnumber, krb5_auth_getremoteseqnumber,
     krb5_auth_setremoteseqnumber, krb5_auth_getauthenticator,
     krb5_auth_con_getrcache, krb5_auth_con_setrcache,
     krb5_auth_con_initivector, krb5_auth_con_setivector - manage authetication
 on connection level

LIBRARY    [Toc]    [Back]

     Kerberos 5 Library (libkrb5, -lkrb5)

SYNOPSIS    [Toc]    [Back]

     #include <krb5/krb5.h>

     krb5_error_code
     krb5_auth_con_init(krb5_context context,
             krb5_auth_context *auth_context);

     void
     krb5_auth_con_free(krb5_context context, krb5_auth_context auth_context);

     krb5_error_code
     krb5_auth_con_setflags(krb5_context context,
             krb5_auth_context auth_context, int32_t flags);

     krb5_error_code
     krb5_auth_con_getflags(krb5_context context,
             krb5_auth_context auth_context, int32_t *flags);

     krb5_error_code
     krb5_auth_con_setaddrs(krb5_context context,
             krb5_auth_context auth_context, krb5_address *local_addr,
             krb5_address *remote_addr);

     krb5_error_code
     krb5_auth_con_getaddrs(krb5_context context,
             krb5_auth_context auth_context, krb5_address **local_addr,
             krb5_address **remote_addr);

     krb5_error_code
     krb5_auth_con_genaddrs(krb5_context context,
             krb5_auth_context auth_context, int fd, int flags);

     krb5_error_code
     krb5_auth_con_setaddrs_from_fd(krb5_context context,
             krb5_auth_context auth_context, void *p_fd);

     krb5_error_code
     krb5_auth_con_getkey(krb5_context context,
             krb5_auth_context auth_context, krb5_keyblock **keyblock);

     krb5_error_code
     krb5_auth_con_getlocalsubkey(krb5_context context,
             krb5_auth_context auth_context, krb5_keyblock **keyblock);

     krb5_error_code
     krb5_auth_con_getremotesubkey(krb5_context context,
             krb5_auth_context auth_context, krb5_keyblock **keyblock);

     krb5_error_code
     krb5_auth_con_initivector(krb5_context context,
             krb5_auth_context auth_context);

     krb5_error_code
     krb5_auth_con_setivector(krb5_context context,
             krb5_auth_context *auth_context, krb5_pointer ivector);

DESCRIPTION    [Toc]    [Back]

     The krb5_auth_context structure holds all context related to an authenticated
 connection, in a similar way to krb5_context that holds the context
     for the thread or process.  krb5_auth_context is used by various functions
 that are directly related to authentication between the
     server/client. Example of data that this structure contains are varius
     flags, addresses of client and server, port numbers, keyblocks (and subkeys),
 sequence numbers, replay cache, and checksum-type.

     krb5_auth_con_init() allocates and initilizes the krb5_auth_context
     structure. Default values can be changed with
     krb5_auth_con_setcksumtype() and krb5_auth_con_setflags().  The
     auth_context structure must be freed by krb5_auth_con_free().

     krb5_auth_con_getflags() and krb5_auth_con_setflags() gets and modifies
     the flags for a krb5_auth_context structure. Possible flags to set are:

     KRB5_AUTH_CONTEXT_DO_TIME
             check timestamp on incoming packets.

     KRB5_AUTH_CONTEXT_DO_SEQUENCE
             Generate and check sequence-number on each packet.

     krb5_auth_con_setaddrs(), krb5_auth_con_setaddrs_from_fd() and
     krb5_auth_con_getaddrs() gets and sets the addresses that are checked
     when a packet is received.  It is mandatory to set an address for the
     remote host. If the local address is not set, it iss deduced from the
     underlaying operating system.  krb5_auth_con_getaddrs() will call
     krb5_free_address() on any address that is passed in local_addr or
     remote_addr.  krb5_auth_con_setaddr() allows passing in a NULL pointer as
     local_addr and remote_addr, in that case it will just not set that
     address.

     krb5_auth_con_setaddrs_from_fd() fetches the addresses from a file
     descriptor.

     krb5_auth_con_genaddrs() fetches the address information from the given
     file descriptor fd depending on the bitmap argument flags.

     Possible values on flags are:

     KRB5_AUTH_CONTEXT_GENERATE_LOCAL_ADDR
             fetches the local address from fd.

     KRB5_AUTH_CONTEXT_GENERATE_REMOTE_ADDR
             fetches the remote address from fd.

     krb5_auth_con_setkey(), krb5_auth_con_setuserkey() and
     krb5_auth_con_getkey() gets and sets the key used for this auth context.
     The keyblock returned by krb5_auth_con_getkey() should be freed with
     krb5_free_keyblock().  The keyblock send into krb5_auth_con_setkey() is
     copied into the krb5_auth_context, and thus no special handling is
     needed.  NULL is not a valid keyblock to krb5_auth_con_setkey().

     krb5_auth_con_setuserkey() is only useful when doing user to user authentication.
  krb5_auth_con_setkey() is equivalent to
     krb5_auth_con_setuserkey().

     krb5_auth_con_getlocalsubkey(), krb5_auth_con_setlocalsubkey(),
     krb5_auth_con_getremotesubkey() and krb5_auth_con_setremotesubkey() gets
     and sets the keyblock for the local and remote subkey. The keyblock
     returned by krb5_auth_con_getlocalsubkey() and
     krb5_auth_con_getremotesubkey() must be freed with krb5_free_keyblock().

     krb5_auth_setcksumtype() and krb5_auth_getcksumtype() sets and gets the
     checksum type that should be used for this connection.

     krb5_auth_getremoteseqnumber() krb5_auth_setremoteseqnumber(),
     krb5_auth_getlocalseqnumber() and krb5_auth_setlocalseqnumber() gets and
     sets the sequence-number for the local and remote sequence-number
     counter.

     krb5_auth_setkeytype() and krb5_auth_getkeytype() gets and gets the keytype
 of the keyblock in krb5_auth_context.

     krb5_auth_getauthenticator() Retrieves the authenticator that was used
     during mutual authentication. The authenticator returned should be freed
     by calling krb5_free_authenticator().

     krb5_auth_con_getrcache() and krb5_auth_con_setrcache() gets and sets the
     replay-cache.

     krb5_auth_con_initivector() allocates memory for and zeros the initial
     vector in the auth_context keyblock.

     krb5_auth_con_setivector() sets the i_vector portion of auth_context to
     ivector.

SEE ALSO    [Toc]    [Back]

     krb5_context(3), kerberos(8)

BSD                            January 21, 2001                            BSD