Hello. I'm in the market for a new computer (a laptop, for certain), and I was considering buying a high-end PC (I have a black MacBook right now). I've been wanting to experiment with Unix-based OS's (for developing mainly -- I'm a developer/programmer -- but for other purposes as well). I'd... (6 Replies)
Hello,
We would like to perform tests on a product that my company created lately.
We don't have the right hardware for AIX enviornment
I've read the thred "Unix environments for MS Windows", but didn't see there a possibility to install AIX OS on a special compatible hardware.
We've... (6 Replies)
Hi Everyone...
I am very interested in the Unix/Linux/Knoppix world and would like to eventually become proficient in the programming aspect of it all. Is it possible to use Knoppix in a partitioned drive on my Windows based computer to learn programming in Unix? Or do I need to partition my... (1 Reply)
All,
Any one knows where I can buy computer based training in unix
like in AIX or HP-UX.
some what like System Administration 1 and 2
Appreciate your help. :) (2 Replies)
ISC-HMAC-FIXUP(1) BIND9 ISC-HMAC-FIXUP(1)NAME
isc-hmac-fixup - fixes HMAC keys generated by older versions of BIND
SYNOPSIS
isc-hmac-fixup {algorithm} {secret}
DESCRIPTION
Versions of BIND 9 up to and including BIND 9.6 had a bug causing HMAC-SHA* TSIG keys which were longer than the digest length of the hash
algorithm (i.e., SHA1 keys longer than 160 bits, SHA256 keys longer than 256 bits, etc) to be used incorrectly, generating a message
authentication code that was incompatible with other DNS implementations.
This bug has been fixed in BIND 9.7. However, the fix may cause incompatibility between older and newer versions of BIND, when using long
keys. isc-hmac-fixup modifies those keys to restore compatibility.
To modify a key, run isc-hmac-fixup and specify the key's algorithm and secret on the command line. If the secret is longer than the digest
length of the algorithm (64 bytes for SHA1 through SHA256, or 128 bytes for SHA384 and SHA512), then a new secret will be generated
consisting of a hash digest of the old secret. (If the secret did not require conversion, then it will be printed without modification.)
SECURITY CONSIDERATIONS
Secrets that have been converted by isc-hmac-fixup are shortened, but as this is how the HMAC protocol works in operation anyway, it does
not affect security. RFC 2104 notes, "Keys longer than [the digest length] are acceptable but the extra length would not significantly
increase the function strength."
SEE ALSO
BIND 9 Administrator Reference Manual, RFC 2104.
AUTHOR
Internet Systems Consortium
COPYRIGHT
Copyright (C) 2010 Internet Systems Consortium, Inc. ("ISC")
BIND9 January 5, 2010 ISC-HMAC-FIXUP(1)
