Sha256: 4c59952aa3990762d679d371676efa1097844b2f81ff13d8a701f28cafcc6f1d
Contents?: true
Size: 893 Bytes
Versions: 12
Compression:
Stored size: 893 Bytes
Contents
require 'openssl'
require 'digest'
require 'base64'
module Keen
module AESHelper
BLOCK_SIZE = 32
def aes256_encrypt(key, plaintext)
aes = OpenSSL::Cipher::AES.new(256, :CBC)
aes.encrypt
aes.key = key
iv = aes.random_iv
[aes.update(plaintext) + aes.final, iv]
end
def aes256_decrypt(key, iv_plus_encrypted)
iv = iv_plus_encrypted[0, 16]
encrypted = iv_plus_encrypted[16, iv_plus_encrypted.length]
aes = OpenSSL::Cipher::AES.new(256, :CBC)
aes.decrypt
aes.key = key
aes.iv = iv
aes.update(encrypted) + aes.final
end
def hexlify(msg)
msg.unpack('H*')[0]
end
def unhexlify(msg)
[msg].pack('H*')
end
def pad(msg)
pad_len = BLOCK_SIZE - (msg.length % BLOCK_SIZE)
padding = pad_len.chr * pad_len
padded = msg + padding
padded
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems