DACSCOOKIE(1) DACS Commands Manual DACSCOOKIE(1)
NAME
dacscookie - create DACS credentials and emit as a cookie
SYNOPSIS
dacscookie [dacsoptions[1]] [-create] [-i ident] [-user user] [-ip ipaddr]
[-role role_str] [-expires date] [-ua str]
dacscookie [dacsoptions[1]] -decrypt [-concise]
DESCRIPTION
This program is part of the DACS suite.
The dacscookie utility constructs DACS credentials that represent a single DACS identity and emits them as the NAME=VALUE element of a HTTP
cookie[2] (RFC 2109[3], RFC 2965[4]) that may be used by DACS. It can also decode and display these cookies, provided the same encryption
keys used to create the cookies are available. The program is useful for testing purposes, or by programs that perform authentication
(e.g., by calling dacsauth(1)[5]) and need to return credentials. It may also be used to generate an identity "offline"; the resulting
credentials could be used by applications other than standard Web browsers, or be distributed via any secure channel (e.g., encrypted
email) for use by the recipient.
Configured or derived defaults are used if optional identity information is not provided.
Security
Only the DACS administrator should be able to successfully run this program. Because DACS keys and configuration files must be limited
to the administrator, this will normally be the case, but a careful administrator will set file permissions to deny access to all other
users, or even delete the binary.
Similarly, access to cookies generated by this program must be carefully controlled. Any jurisdiction within the same federation in
which the credentials were created will be able to directly decrypt the credentials.
OPTIONS
dacscookie recognizes these options for cookie creation:
-create
Create the specified credentials and emit them to the standard output as the NAME=VALUE component of an HTTP cookie. This is the
default.
-expires date
Set the expiry date for the cookie. If date begins with '+' and is followed by a digit string, the expiry date will be that number of
seconds relative to the current time. Otherwise, the date is expected to be in one of the recognized formats (see concise syntax[6]).
If not provided, the configured default value, AUTH_CREDENTIALS_DEFAULT_LIFETIME_SECS[7], will be used.
-i ident
The identity (ident) is given in the concise syntax[6]. Note that any elements that are explicitly given will override those that
appear in ident.
-ip ipaddr
Use ipaddr as the user's IP address (in numerical dot notation). If not provided, this element will be obtained from any -i flag or
else omitted from the credentials.
-role role_str
Use role_str as the user's role string, which must be syntactically correct. If not provided, this element will be obtained from any -i
flag or else omitted from the credentials.
-ua str
Use str as the user agent string associated with the credentials. If no string is specified, the credentials cannot be verified against
a user agent string. See dacs.conf(5)[8].
-user name
Use name, a syntactically correct username, within the applicable jurisdiction. If not provided, this element must be specified using
the -i flag.
dacscookie recognizes these options for cookie decryption:
-decrypt
Instead of creating credentials, read a cookie from the standard input and print its decoded contents to the standard output. If the
input is invalid in any way, a message is displayed.
-concise
With the -decrypt flag, only print the identity in the concise user syntax[6].
EXAMPLES
The following will generate an identity and store it in a file:
% dacscookie -u j1.example.com -user bobo > cookie.out
% chmod 0600 cookie.out
The following will display various elements of the credentials to stdout:
% dacscookie -u j1.example.com -decrypt < cookie.out
% rm cookie.out
DIAGNOSTICS
The program exits 0 if everything was fine, 1 if an error occurred.
SEE ALSO
dacs_auth_agent(8)[9], dacs_auth_transfer(8)[10], dacs_authenticate(8)[11], dacsauth(1)[5], dacscred(1)[12],
dacs_current_credentials(8)[13].
AUTHOR
Distributed Systems Software (www.dss.ca[14])
COPYING
Copyright2003-2012 Distributed Systems Software. See the LICENSE[15] file that accompanies the distribution for licensing information.
NOTES
1. dacsoptions
http://dacs.dss.ca/man/dacs.1.html#dacsoptions
2. HTTP cookie
http://web.archive.org/web/20070805052634/http://wp.netscape.com/newsref/std/cookie_spec.html
3. RFC 2109
http://www.rfc-editor.org/rfc/rfc2109.txt
4. RFC 2965
http://www.rfc-editor.org/rfc/rfc2965.txt
5. dacsauth(1)
http://dacs.dss.ca/man/dacsauth.1.html
6. concise syntax
http://dacs.dss.ca/man/dacs.1.html#concise_user_syntax
7. AUTH_CREDENTIALS_DEFAULT_LIFETIME_SECS
http://dacs.dss.ca/man/dacs.conf.5.html#AUTH_CREDENTIALS_DEFAULT_LIFETIME_SECS
8. dacs.conf(5)
http://dacs.dss.ca/man/dacs.conf.5.html#VERIFY_UA
9. dacs_auth_agent(8)
http://dacs.dss.ca/man/dacs_auth_agent.8.html
10. dacs_auth_transfer(8)
http://dacs.dss.ca/man/dacs_auth_transfer.8.html
11. dacs_authenticate(8)
http://dacs.dss.ca/man/dacs_authenticate.8.html
12. dacscred(1)
http://dacs.dss.ca/man/dacscred.1.html
13. dacs_current_credentials(8)
http://dacs.dss.ca/man/dacs_current_credentials.8.html
14. www.dss.ca
http://www.dss.ca
15. LICENSE
http://dacs.dss.ca/man/../misc/LICENSE
DACS 1.4.27b 10/22/2012 DACSCOOKIE(1)