MECH(5) File Formats Manual MECH(5)

# [NAME](#NAME)

`mech`, `qop` — GSS-API Mechanism and QOP files

# [SYNOPSIS](#SYNOPSIS)

/etc/gss/mech /etc/gss/qop

# [DESCRIPTION](#DESCRIPTION)

The /etc/gss/mech file contains a list of installed GSS-API security mechanisms. Each line of the file either contains a comment if the first character is '#' or it contains five fields with the following meanings:

Name

The name of this GSS-API mechanism.

Object identifier

The OID for this mechanism.

Library

A shared library containing the implementation of this mechanism.

Kernel module (optional)

A kernel module containing the implementation of this mechanism (not yet supported in FreeBSD).

Library options (optional)

Optionsal parameters interpreted by the mechanism. Library options must be enclosed in brackets (\[ ]) to differentiate them from the optional kernel module entry.

The /etc/gss/qop file contains a list of Quality of Protection values for use with GSS-API. Each line of the file either contains a comment if the first character is '#' or it contains three fields with the following meanings:

QOP string

The name of this Quality of Protection algorithm.

QOP value

The numeric value used to select this algorithm for use with GSS-API functions such as [gss\_get\_mic(3)](/man/os/heimdal/gss_get_mic.3).

Mechanism name

The GSS-API mechanism name that corresponds to this algorithm.

# [EXAMPLES](#EXAMPLES)

This is a typical entry from /etc/gss/mech:

```
kerberosv5	1.2.840.113554.1.2.2	/usr/lib/libgssapi_krb5.so.8	-
```

This is a typical entry from /etc/gss/qop:

```
GSS_KRB5_CONF_C_QOP_DES		0x0100	kerberosv5
```

# [HISTORY](#HISTORY)

The `mech` manual page example first appeared in FreeBSD 7.0.

# [AUTHORS](#AUTHORS)

This manual page was written by Doug Rabson <[dfr@FreeBSD.org](mailto:dfr@FreeBSD.org)>.

November 14, 2005 Linux 4.19.0-gvisor

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Document: qop(5) from heimdal 7.8.0-r54 (Chainguard OS)
Source: https://github.com/heimdal/heimdal