.TH creddy 1 "July 2012" "ABAC 0.2.2"

.SH NAME
creddy \- ABAC X.509 identity and attribute certificate manager 

.SH SYNOPSIS

.B creddy [ --<mode> ] --help

.SH DESCRIPTION

creddy is an awesome and wonderful ABAC credential management tool. It
creates, verifies, and otherwise frobnicates X.509 identity and
attribute certificates. The output of the tool is suitable for use with
ABAC. Additionally, the self-signed X.509 identity certs (with
associated private keys) can be used with OpenSSL. Although creddy 
only generates self-signed identity, it can verify and sanity check
none self-signed identity certs

.SH OPTIONS

.SS --generate
Generate an X.509 identity cert and private key pair unless an external private key is specified. The certificate is saved in ${cn}_ID.pem and the generated private key is saved in ${cn}_private.pem

.P
Note that private key generation is slow and uses a lot of entropy. You can generate entropy by moving your mouse a lot or running large find commands on your local file systems

.TP
.B --cn
common name used on certificate, provided as a convenience and ignored by ABAC

.TP
.B --validity
optional certificate validity. This argument takes a time period followed by an optional suffix of s m h d y (defaults to d if omitted). The default is 1080 days

.TP
.B --out
optional output directory. Must exist before invoking the command

.TP
.B --key
optional external private key to be use for this identity

.TP
.B --p
optional passphrase flag if the external private key supplied is encrypted. If the passphrase
is saved in a file 'pfile', then --p=pfile

.SS --verify
verify the signature on a (self-signed and none self-signed) X.509 identity cert or an X.509 attribute cert and the validity of the cert

.TP
.B --cert
X.509 identity cert

.TP
.B --attrcert
optional X.509 attribute cert. 

.SS --keyid
extract the subjectKeyIdentifier (SHA1 hash) from an X.509 identity cert

.TP
.B --cert
X.509 identity cert

.SS --attribute
generate an X.509 attribute cert representing an ABAC credential

An attribute cert has one or more subjects. A single subject may be defined without a role or oset. Otherwise, subjects are defined by a pair of a --subject-{cert,id} and --subject-{role,oset} and may include an optional --subject-link or just --subject-obj or --subject-cert. Providing multiple subjects creates an intersection certificate

.TP
.B --issuer
X.509 identity cert issuing the credential

.TP
.B --key
private key associated with issuer cert

.TP
.B --p
optional passphrase if the private key is encrypted

.TP
.B --role
role in issuer's local attribute space

.TP
.B --oset
o-set in issuer's local attribute space

.TP
.B --subject-cert
X.509 identity cert representing the principal to which the role is being issued. This fulfills the same purpose as --subject-id and should only be used once per subject

.TP
.B --subject-id
public key identifier (SHA1 hash) of the principal to which the role is being issued. This fulfills the same purpose as --subject-cert and should only be used once per subject

.TP
.B --subject-role
optional role in subject's local attribute space. If the issuer is A, role is r1, subject is B, and subject-role is r2, the attribute issued will be A.r1 <- B.r2

.TP
.B --subject-oset
optional oset in subject's local attribute space. If the issuer is A, oset is o1, subject is B, and subject-oset is o2, the attribute issued will be A.o1 <- B.o2

.TP
.B --subject-link
optional linking role in subject's local attribute space. If the issuer is A, oset is o1, subject is B, subject-link is r2 and subject-oset is o2, the attribute issued will be A.o1 <- B.r2.o2

.TP
.B --subject-obj
optional object in subject's local attribute space. If the issuer is A, oset is o1, and subject-obj is o2, the attribute issued will be A.o1 <- o2

.TP
.B --validity
optional certificate validity. This argument takes a time period followed by an optional suffix of s m h d y (defaults to d if omitted). The default is 365 days

.TP
.B --out
where to save DER-encoded attribute cert. In order to interoperate with the rest of ABAC, this name should end in _attr.der

.SS --keycheck
Do a sanity check on a private key file

.TP
.B --key
private key to be used

.TP
.B --p
passphrase file to be used

.SS --roles
Extract the roles from an X.509 attribute cert

.TP
.B --cert
X.509 attribute cert containing ABAC roles

.SS --osets
Extract the osets from an X.509 attribute cert

.TP
.B --cert
X.509 attribute cert containing ABACosets 

.SS --display
Displays metadata from an X.509 identity or attribute cert

.TP
.B --show=[issuer,..,all]
comma-separated list of:

    issuer      DN of issuer
    subject     DN of subject
    validity    validity period
    roles       attribute cert roles (fails silently on ID certs)
    osets       attribute cert osets (fails silently on ID certs)
    all         all of the above

.TP
.B --cert
X.509 identity or attribute cert

.SS --version
display ABAC/creddy version

.SH EXAMPLES

.TP
Generate ID cert and private key pairs:

.B creddy --generate --cn Alice
.br
.B creddy --generate --cn Bob

.TP
Issue the credential Alice.friend <- Bob

creddy --attribute \\
       --issuer Alice_ID.pem --key Alice_private.pem \\
       --role friend --subject-cert Bob_ID.pem \\
       --out Alice_friend__Bob_attr.der

.SH AUTHOR

Written by Mike Ryan 
.br
Updated by Mei-Hui Su <mei@ISI.EDU>.  

.SH BUGS

None yet. Report to http://abac.deterlab.net/

.SH COPYRIGHT

Copyright (c) 2010-2012 USC/ISI. Released under MIT license. See COPYING included with source for details.