sq-pki-vouch-certify - Man Page

Certify a User ID for a Certificate

Using a certification a keyholder may vouch for the fact that another certificate legitimately belongs to a user id. In the context of emails this means that the same entity controls the key and the email address. These kind of certifications form the basis for the Web of Trust.

This command emits the certificate with the new certification. The updated certificate has to be distributed, preferably by sending it to the certificate holder for attestation. See also `sq key approvals`.

By default a certification expires after 5 years. Using the `--expiration` argument specific validity periods may be defined. It allows for providing a point in time for validity to end or a validity duration.

`sq pki vouch certify` respects the reference time set by the top-level `--time` argument. It sets the certification's creation time to the reference time.

Options

Subcommand options

--add-userid

Use the given user ID even if it isn't a self-signed user ID.

Because certifying a user ID that is not self-signed is often a mistake, you need to use this option to explicitly opt in. That said, certifying a user ID that is not self-signed is useful. For instance, you can associate an alternate email address with a certificate, or you can add a petname, i.e., a memorable, personal name like "mom".

--amount=AMOUNT

Set the amount of trust. Values between 1 and 120 are meaningful. 120 means fully trusted. Values less than 120 indicate the degree of trust. 60 is usually used for partially trusted.

[default: full]

--binary

Emit binary data

--cert=FINGERPRINT|KEYID

Use certificates with the specified fingerprint or key ID

--cert-file=PATH

Read certificates from PATH

--certifier=FINGERPRINT|KEYID

Create the certification using the key with the specified fingerprint or key ID

--certifier-email=EMAIL

Create the certification using the key where a user ID includes the specified email address

--certifier-file=PATH

Create the certification using the key read from PATH

--certifier-userid=USERID

Create the certification using the key with the specified user ID

--email=EMAIL

Use the specified email address

--expiration=EXPIRATION

Sets the expiration time.

EXPIRATION is either an ISO 8601 formatted string or a custom duration, which takes the form `N[ymwds]`, where the letters stand for years, months, weeks, days, and seconds, respectively. Alternatively, the keyword `never` does not set an expiration time.

[default: 5y]

--local

Make the certification a local certification. Normally, local certifications are not exported.

--non-revocable

Mark the certification as being non-revocable. That is, you cannot later revoke this certification. This should normally only be used with an expiration.

--notation NAME VALUE

Add a notation to the certification. A user-defined notation's name must be of the form `name@a.domain.you.control.org`. If the notation's name starts with a !, then the notation is marked as being critical. If a consumer of a signature doesn't understand a critical notation, then it will ignore the signature. The notation is marked as being human readable.

--output=FILE

Write to FILE or stdout if omitted

--userid=USERID

Use the specified user ID

Global options

See sq(1) for a description of the global options.

Examples

Alice certifies that Bob controls 3F68CB84CE537C9A and bob@example.org.

    sq pki vouch certify \
    --certifier=EB28F26E2739A4870ECC47726F0073F60FD0CBF0 \

--cert=511257EBBF077B7AEDAE5D093F68CB84CE537C9A \
--email=bob@example.org

Alice certifies that Bob controls 3F68CB84CE537C9A and bob@bobs.lair.net, which is not a self-signed user ID.

    sq pki vouch certify \
    --certifier=EB28F26E2739A4870ECC47726F0073F60FD0CBF0 \

--cert=511257EBBF077B7AEDAE5D093F68CB84CE537C9A \
--add-userid --email=bob@bobs.lair.net

Version

0.39.0 (sequoia-openpgp 1.21.2)

Referenced By

sq-pki-vouch(1).

0.39.0 Sequoia PGP