Secure encryption/decryption for elevators

A secure communication system for an elevator information or control system comprising:

• a primary controller for controlling operations of a plurality of elevators, displays, voice units, and communication lanes wherein the primary controller includes:
• at least one block of data assembled into unencrypted N-bits of information;
• an encryption routine including an encryption algorithm for encoding the data into at least one block of encrypted M-bits of information;
• a data encryption mask directing the encryption routine for placing the N-bits of information into M-bits of information;
• a transmitter for transmitting encrypted data from the primary controller;
• a plurality of subordinate controllers for controlling inputs to and outputs from an elevator wherein the subordinate controllers include;
• receivers for receiving the encrypted data from the transmitter wherein the receivers include:
• a decryption algorithm in the subordinate controllers for decoding the encrypted information into unencrypted information,
• wherein the at least one block of M-bits of information is three scattered packets of information,
• wherein the at least one block of data assembled into unencrypted n-bits of information is three blocks of separate unencrypted information;
• and
• wherein the at least one block of N-bits of information is three basic packets of information and wherein the three basic packets of information are a floor packet, a message packet and a travel packet;
• and
• wherein the at least one block of M-bits of information comprises a start bit, type nibble, decoding key bit, encrypted data, decoding key bit, checksum, and a stop bit.

A secure communication system for an elevator information or control system comprising:

• a primary controller for controlling operations of a plurality of elevators, information displays and other output devices;
• a plurality of subordinate controllers for controlling inputs to and outputs from an elevator;
• a floor block of unencrypted N-bits of floor information;
• a message block of unencrypted N-bits of message information;
• a travel block of unencrypted N-bits of travel information;
• an encryption device for encoding the N-bits of information into encrypted M-bits of information;
• a data encryption mask defining an encryption routine for placing the N-bits of information into the M-bits of information;
• three separate blocks of encrypted M-bits of information, each block of encrypted M-bits of information including scrambled, encrypted bits of floor, message and travel information;
• a transmitter for transmitting encrypted data from the primary controller to the subordinate controllers;
• a decryption algorithm in the subordinate controllers for decoding the encrypted information into unencrypted information;
• wherein the at least one block of N-bits of information is three basic packets of information and wherein the three basic packets of information are a floor packet, a message packet and a travel packet;
• and
• wherein the at least one block of M-bits of information comprises a start bit, type nibble, decoding key bit, encrypted data, decoding key bit, checksum, and a stop bit.

A process for transmitting data for an elevator information control system with a secure communication system comprising the steps of:

• placing at least one block of data assembled into unencrypted N-bits of information in at least one data packet;
• wherein the at least one block of N-bits of information is three basic packets of information and wherein the three basic packets of information are a floor packet, a message packet and a travel packet
• selecting a data encryption mask directing an encryption routine for placing the N-bits of information into M-bits of information;
• using an encryption algorithm for encoding the data into at least one block of encrypted M-bits of information wherein the at least one block of M-bits of information comprises a start bit, type nibble, decoding key bit, encrypted data, decoding key bit, checksum, and a stop bit;
• and
• transmitting the encrypted information.

A process for transmitting data for an elevator control system with a secure communication system comprising the steps of:

• providing at least one block of N-bits of information is three basic packets of information and wherein the three basic packets of information are a floor packet, a message packet and a travel packet
• placing the floor information in unencoded floor data packet;
• placing the message information in unencoded message data packets;
• placing the travel information in unencoded travel data packets;
• selecting a data encryption mask defining an encryption routine for scrambling the information in the three separate data packets;
• using an encryption algorithm for encoding the information in the three separate data packets wherein the encrypted information comprises a start bit, type nibble, decoding key bit, encrypted data, decoding key bit, checksum, and a stop bit;
• and
• transmitting the encrypted information.

A process for transmitting data for an elevator information or control system with a secure communication system comprising the steps of:

• providing three basic packets of unencoded information, wherein the three basic packets of information are a floor packet, a message packet and a travel packet;
• retrieving the unencoded floor information;
• retrieving the unencoded message information;
• retrieving the unencoded travel information;
• scrambling the information into three separate data packets using a data encryption mask defining an encryption routine;
• using an encryption algorithm for encoding the information in the three separate data packets wherein the encrypted information comprises a start bit, type nibble, decoding key bit, encrypted data, decoding key bit, checksum, and a stop bit;
• and
• transmitting the encrypted separate data packets.

A secure communication system for an elevator information or control system comprising:

• a primary controller wherein the primary controller includes:
• at least one block of data assembled into unencrypted N-bits of information,
• wherein the at least one block of N-bits of information is three basic packets of information and wherein the three basic packets of information are a floor packet, a message packet and a travel packet;
• an encryption routine including an encryption algorithm for encoding the data into at least one block of encrypted M-bits of information;
• a data encryption mask directing the encryption routine for placing the N-bits of information into M-bits of information wherein the at least one block of M-bits of information comprises a start bit, type nibble, decoding key bit, encrypted data, decoding key bit, checksum, and a stop bit;
• and
• a transmitter for transmitting encrypted data from the primary controller;
• and
• wherein each block of the at least one block of N-bits of information is 28 bits of unencrypted information.

A secure communication system for an elevator information or control system comprising:

• a primary controller wherein the primary controller includes:
• at least one block of data assembled into unencrypted N-bits of information,
• wherein the at least one block of N-bits of information is three basic packets of information and wherein the three basic packets of information are a floor packet, a message packet and a travel packet;
• an encryption routine including an encryption algorithm for encoding the data into at least one block of encrypted M-bits of information;
• a data encryption mask directing the encryption routine for placing the N-bits of information into M-bits of information wherein the at least one block of M-bits of information comprises a start bit, type nibble, decoding key bit, encrypted data, decoding key bit, checksum, and a stop bit;
• and
• a transmitter for transmitting encrypted data from the primary controller;
• and
• wherein each block of the at least one block of M-bits of information is 40 bits of encoded information.