Sha256: b88f99a765d3806f23af49174a5e3f51c666dfd2de82203b59bae3010295a86f
Contents?: true
Size: 712 Bytes
Versions: 8
Compression:
Stored size: 712 Bytes
Contents
module Slosilo
class Symmetric
def initialize
@cipher = OpenSSL::Cipher.new 'AES-256-CBC'
end
def encrypt plaintext, opts = {}
@cipher.reset
@cipher.encrypt
@cipher.key = opts[:key]
@cipher.iv = iv = random_iv
ctxt = @cipher.update(plaintext)
iv + ctxt + @cipher.final
end
def decrypt ciphertext, opts = {}
@cipher.reset
@cipher.decrypt
@cipher.key = opts[:key]
@cipher.iv, ctxt = ciphertext.unpack("a#{@cipher.iv_len}a*")
ptxt = @cipher.update(ctxt)
ptxt + @cipher.final
end
def random_iv
@cipher.random_iv
end
def random_key
@cipher.random_key
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems