crypt (1) --- exclusive-or encryption and decryption 12/26/80 _U_s_a_g_e crypt [ ] _D_e_s_c_r_i_p_t_i_o_n 'Crypt' encrypts data from its first standard input based upon an encryption key supplied as an argument, and writes the result on its first standard output. 'Crypt' uses a reversible "exclusive-or" algorithm so that cipher text encrypted with a given key may be decoded using the same key. If the is omitted from the command, 'crypt' turns off the terminal echo and prompts for the key from the terminal. _E_x_a_m_p_l_e_s sensitive_data> crypt bogus-key >safe_data secret_message> crypt turkey _M_e_s_s_a_g_e_s "Key: " for a missing key crypt (1) - 1 - crypt (1)