1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
begin
RUBY_VERSION =~ /(\d+.\d+)/
require "#{$1}/bcrypt_pbkdf_ext"
rescue LoadError
require "bcrypt_pbkdf_ext"
end
module BCryptPbkdf
# generates a key from a password + salt returning a string with keylen bytes
# that can be used as cryptographic key.
#
# Remember to get a good random salt of at least 16 bytes. Using a higher
# rounds count will increase the cost of an exhaustive search but will also
# make derivation proportionally slower.
#
# Example:
# rounds = 10
# keylen = 64
# @key = BCryptPbkdf.key("my secret", "my salt", keylen, rounds)
def self.key(pass,salt,keylen,rounds)
BCryptPbkdf::Engine::__bc_crypt_pbkdf(pass,salt,keylen,rounds)
end
end
|
