pskey(1)

NAME
pskey - Print prescaler key

SYNOPSIS
pskey [options] file [file] [...] [>stdout]

DESCRIPTION
Read the prescaler section of a .pib file and print the SHA256 digest (key) on stdout. The digest acts as a finger-print of the prescalers stored within and may be used to compare prescalers and detect changes. Only the prescaler section is read. The rest of the PIB is ignored.

This program is part of the Qualcomm Atheros Powerline Toolkit. See the AMP man page for an overview and installation instructions.

OPTIONS

-q  Enable quiet mode. This suppresses the filename after prescaler keys on output.

-v  Verbose mode. This option has no effect at present. None.

ARGUMENTS

file
    The name of an Atheros Parameter Information Block (PIB) file. This file is not modified. By convention, PIB files have a .pib extenstion but this program does not enforce that convention but invalid PIB files will be rejected on input.

DISCLAIMER
PIB file structure and content is proprietary to Qualcomm Atheros, Ocala FL USA. Consequently, public information is not available. Qualcomm Atheros reserves the right to modify PIB file structure or content in future firmware releases without any obligation to notify or compensate users of this program.

EXAMPLES
This example prints the SHA256 digest for the prescaler section in file v3.3.4.pib. The digest uniquely identifies that particular prescaler set. PIB files with the same prescaler digest contain the same prescaler set.

   # pskey v3.3.4.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.3.4.pib

The next example is the same as before but does not print the input filename after the key.

   # pskey v3.3.4.pib -q
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4

The next example does the same for all .pib files in the current folder. Observe that several files have the same fingerprint and so contain identical prescaler sets. Prescalers are designed to satisfy EMI requirements for various applications and world regions. It is critical that the correct prescalers are used.

   # pskey *.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 2008-06-25.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v2.0.4.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.0.1.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.0.4.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.0.5.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.1.0.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.1.3.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.1.4.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.1.6.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.1.7.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.1.8.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.1.9.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.2.0.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.3.0.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.3.1.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.3.2.pib
   980444623A8B8E76121E5014B054D9D1306C06C4D7FD7E2E158D13C9B24CFDE1 v3.3.4-1.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.3.4-2.pib
   649C3B280E20A78994D11048C6E2ABEB6BA5DBCBBE3BA2BDD3BA3C3CFF8EF7E4 v3.3.4-RC9.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.3.4.pib

The next example does the same as the previous one but sorts on the digest in order to group files by their prescaler sets. This highlights the fact that we have four different prescaler sets in the group and two files are apparently different from the others. The sort program is a Linux utility and may not be available on some systems.

   # pskey *.pib | sort
   649C3B280E20A78994D11048C6E2ABEB6BA5DBCBBE3BA2BDD3BA3C3CFF8EF7E4 v3.3.4-RC9.pib
   980444623A8B8E76121E5014B054D9D1306C06C4D7FD7E2E158D13C9B24CFDE1 v3.3.4-1.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.0.4.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.1.0.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.1.3.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.1.4.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.1.7.pib
   9D6F711B81BEAE3DE9182ECC264C47DDD187264A2B89A162C54F3C1FDD5CE240 v3.2.0.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 2008-06-25.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v2.0.4.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.0.1.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.0.5.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.1.6.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.1.8.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.1.9.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.3.0.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.3.1.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.3.2.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.3.4-2.pib
   AF26B02BB5044BE70986A5C2F5705671213D63A7827928C240D131E940EF4FC4 v3.3.4.pib

DISCLAIMER
PIB file structure and content is proprietary to Qualcomm Atheros, Ocala FL USA. Consequently, public information is not available. Qualcomm Atheros reserves the right to modify PIB file structure or content in future firmware releases without any obligation to notify or compensate users of this program.

SEE ALSO
psgraph(7), psin(1), psout(1)

CREDITS
 Charles Maier