NAME

Crypt::Passphrase::HSM - A hasher using hardware for Crypt::Passphrase

SYNOPSIS

 my $passphrase = Crypt::Passphrase->new(
     encoder => {
         module   => 'HSM',
         provider => '/usr/lib/pkcs11/some-pkcs11.so',
         active   => '3',
     },
 );

DESCRIPTION

This module wraps hashes the password using an hmac. By using identifiers for the peppers, it allows for easy rotation of peppers. Unlike traditional mechanisms it relies fully depends on the secrecy of the peppers in the HSM instead of computational difficulty, as such the key size should probably equal the output size.

METHODS

new(%args)

This creates a new encoder. It takes the following named arguments:

• provider

  The path to the PKCS11 provider. This is mandatory.

• slot

  The slot used on the provider, this defaults to the first listed slot.

• active

  This is the identifier of the active pepper. This is mandatory.

• prefix

  The prefix that is used when looking up keys in the HSM. It defaults to 'pepper-'.

• pin

  The PIN that is used for logging in, if any.

• user_type

  The type of user you're logging in with. This defaults to 'user', and you're unlikely to want to change that.

• algorithm

  This is the algorithm that's used for hashing. It supports any mechanism on your HSM that can sign and verify, common values are 'sha1-hmac', 'sha224-hmac', 'sha256-hmac', 'sha384-hmac', and 'sha512-hmac' (the default).

hash_password($password)

This hashes the $password in the HSM using the given algorithm.

verify_password($password, $hash)

Verify a password with the HSM.

needs_rehash($hash)

This will check if the hash needs a rehash.

crypt_subtypes

This returns the supported algorithms.

AUTHOR

Leon Timmermans <leont@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2023 by Leon Timmermans.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.