03-28-2014
It's a difficult question, whether it's even feasible to run this kind of encryption on multiple cores.
One workaround has been to make two separate dm-crypt volumes of identical size, then make a single software raid-0 out of them (i.e. striping). Each dm-crypt volume will have its own data path, and performance will be increased.
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crypt(3C) crypt(3C)
NAME
crypt - generate hashing encryption
SYNOPSIS
Obsolescent Interfaces
DESCRIPTION
crypt():
is the password encryption function. It is based on a one way hashing encryption algorithm with variations intended (among other things)
to frustrate use of hardware implementations of a key search.
key is a user's typed password. salt is a two-character string chosen from the set this string is used to perturb the hashing algorithm in
one of 4096 different ways, after which the password is used as the key to encrypt repeatedly a constant string. The returned value points
to the encrypted password. The first two characters are the salt itself.
Obsolescent Interfaces
generate hashing encryption.
WARNINGS
The return value for points to data whose content is overwritten by each call.
and are obsolescent interfaces supported only for compatibility with existing DCE applications. New multithreaded applications should use
SEE ALSO
crypt(1), login(1), passwd(1), getpass(3C), passwd(4), thread_safety(5).
STANDARDS CONFORMANCE
crypt(3C)