# 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