sq-pki-lookup - Man Page

Lookup the certificates associated with a User ID

Synopsis

sq pki lookup [Options] USERID

Description

Lookup the certificates associated with a User ID.

Identifies authenticated bindings (User ID and certificate pairs) where the User ID matches the specified User ID.

If a binding could be authenticated to the specified level (by default: fully authenticated, i.e., a trust amount of 120), then the exit status is 0.  Otherwise the exit status is 1.

If a binding could be partially authenticated (i.e., its trust amount is greater than 0), then the binding is displayed, even if the trust is below the specified threshold.

Options

Subcommand options

-a, --amount=AMOUNT

The required amount of trust.

120 indicates full authentication; values less than 120 indicate partial authentication.  When `--certification-network` is passed, this defaults to 1200, i.e., `sq pki` tries to find 10 paths.

--certification-network

Treats the network as a certification network.

Normally, `sq pki` treats the Web of Trust network as an authentication network where a certification only means that the binding is correct, not that the target should be treated as a trusted introducer.  In a certification network, the targets of certifications are treated as trusted introducers with infinite depth, and any regular expressions are ignored. Note: The trust amount remains unchanged.  This is how most so-called PGP path-finding algorithms work.

--email

Changes the USERID parameter to match User IDs with the specified email address.

Interprets the USERID parameter as an email address, which is then used to select User IDs with that email address.

Unlike when comparing User IDs, email addresses are first normalized by the domain to ASCII using IDNA2008 Punycode conversion, and then converting the resulting email address to lowercase using the empty locale.

If multiple User IDs match, they are each considered in turn, and this function returns success if at least one of those User IDs can be authenticated.  Note: The paths to the different User IDs are not combined.

--gossip

Treats all certificates as unreliable trust roots.

This option is useful for figuring out what others think about a certificate (i.e., gossip or hearsay).  In other words, this finds arbitrary paths to a particular certificate.

Gossip is useful in helping to identify alternative ways to authenticate a certificate.  For instance, imagine Ed wants to authenticate Laura's certificate, but asking her directly is inconvenient.  Ed discovers that Micah has certified Laura's certificate, but Ed hasn't yet authenticated Micah's certificate.  If Ed is willing to rely on Micah as a trusted introducer, and authenticating Micah's certificate is easier than authenticating Laura's certificate, then Ed has learned about an easier way to authenticate Laura's certificate.

USERID

The User ID to authenticate.

This is case sensitive, and must be the whole User ID, not just a substring or an email address.

Global options

--cert-store=PATH

Specifies the location of the certificate store.  By default, sq uses the OpenPGP certificate directory at `$HOME/.local/share/pgp.cert.d`, and creates it if it does not exist.

-f,  --force

Overwrites existing files

-h,  --help

Print help (see a summary with '-h')

--keyring=PATH

Specifies the location of a keyring to use.  Keyrings are used in addition to any certificate store.  The content of the keyring is not imported into the certificate store.  When a certificate is looked up, it is looked up in all keyrings and any certificate store, and the results are merged together.

--known-notation=NOTATION

Adds NOTATION to the list of known notations. This is used when validating signatures. Signatures that have unknown notations with the critical bit set are considered invalid.

--no-cert-store

Disables the use of a certificate store.  Normally sq uses the user's standard cert-d, which is located in `$HOME/.local/share/pgp.cert.d`.

--output-format=FORMAT

Produces output in FORMAT, if possible

--output-version=VERSION

Produces output variant Version, such as 0.0.0. The default is the newest version. The output version is separate from the version of the sq program. To see the current supported versions, use output-versions subcommand.

--pep-cert-store=PATH

Specifies the location of a pEp certificate store.  sq does not use a pEp certificate store by default; it must be explicitly enabled using this argument or the corresponding environment variable, PEP_CERT_STORE.  The pEp Engine's default certificate store is at `$HOME/.pEp/keys.db`.

--time=TIME

Sets the reference time as an ISO 8601 formatted timestamp.  Normally, commands use the current time as the reference time.  This argument allows the user to use a difference reference time.  For instance, when creating a key using `sq key generate`, the creation time is normally set to the current time, but can be overridden using this option.  Similarly, when verifying a message, the message is verified with respect to the current time.  This option allows the user to use a different time.

TIME is interpreted as an ISO 8601 timestamp.  To set the certification time to July 21, 2013 at midnight UTC, you can do:

$ sq --time 20130721 verify msg.pgp

To include a time, say 5:50 AM, add a T, the time and optionally the timezone (the default timezone is UTC):

$ sq --time 20130721T0550+0200 verify msg.pgp

--trust-root=FINGERPRINT|KEYID

Considers the specified certificate to be a trust root. Trust roots are used by trust models, e.g., the Web of Trust, to authenticate certificates and User IDs.

-v,  --verbose

Be more verbose.

Examples

Lookup a certificate with the given User ID.

    sq pki lookup --partial 'Alice <alice@example.org>'

Lookup a certificate with the given email address.

    sq pki lookup --email alice@example.org

See Also

sq(1), sq-pki(1).

For the full documentation see <https://book.sequoia-pgp.org>.

Version

0.33.0 (sequoia-openpgp 1.17.0)

Referenced By

sq-pki(1).

0.33.0 Sequoia-PGP