get (Net::SSH::Transport::CipherFactory)

        # File lib/net/ssh/transport/cipher_factory.rb, line 45
    45:     def self.get(name, options={})
    46:       ossl_name = SSH_TO_OSSL[name] or raise NotImplementedError, "unimplemented cipher `#{name}'"
    47:       return IdentityCipher if ossl_name == "none"
    48:
    49:       cipher = OpenSSL::Cipher::Cipher.new(ossl_name)
    50:       cipher.send(options[:encrypt] ? :encrypt : :decrypt)
    51:
    52:       cipher.padding = 0
    53:       cipher.iv      = make_key(cipher.iv_len, options[:iv], options) if ossl_name != "rc4"
    54:       key_len = KEY_LEN_OVERRIDE[name] || cipher.key_len
    55:       cipher.key_len = key_len
    56:       cipher.key     = make_key(key_len, options[:key], options)
    57:       cipher.update(" " * 1536) if ossl_name == "rc4"
    58:
    59:       return cipher
    60:     end