System and Method for Cipher E-Mail Protection

A method for securing messages, comprising the steps of:

• generating a message;
• performing a security transformation in said message in one or more fields;
• transmitting said transformed message to an Internet e-mail system;
• and
• storing said transformed message at the Internet e-mail system.

A method of generating and accessing transformed messages, comprising the steps of:

• generating a message;
• performing a security transformation in said message in one or more fields;
• transmitting the transformed message to an Internet e-mail system;
• storing said transformed message at the Internet e-mail system;
• and
• accessing said message and performing a reverse security transformation on said message.

A method for performing a security transformation on a message, comprising the steps of:

• generating a message;
• performing a cipher substitution of attributes of said message;
• encrypting attributes of said message;
• transmitting said transformed and encrypted message from an e-mail store to an Internet e-mail system;
• and
• storing said transformed and encrypted message at the Internet e-mail system.

A method of generating and accessing ciphered messages, comprising the steps of:

• generating a message at first location;
• performing a cipher substitution of terms in a message;
• creating a cipher index;
• encrypting said index;
• transmitting the ciphered and encrypted message to the Internet e-mail system;
• storing said ciphered message at the Internet e-mail system;
• searching said message using said cipher index;
• retrieving said ciphered and encrypted message;
• decoding said ciphered message using said cipher index;
• decrypting said index;
• decrypting attributes of said message;
• and
• viewing said message with an e-mail client;

A method of generating and accessing ciphered messages, comprising the steps of:

• replacing required terms in an email message with corresponding terms from a dictionary for the folder or mailbox;
• if a new term is encountered while replacing, creating a new mapping in the dictionary, and replacing the new word with the new cipher term;
• identifying all terms used by the email message;
• creating a subset of the dictionary for the terms of the message;
• encrypting the subset dictionary using a symmetric encryption algorithm;
• attaching the encrypted subset dictionary to the email message in an extended attributes field;
• using PKI technology to encrypt the symmetric key using a set of public keys for one or more users as required;
• placing the encrypted symmetric key packages in an extended attributes field;
• placing an encrypted term index for the message in an extended attribute field;
• transmitting the coded email to the Internet e-mail system account where it is stored;
• transmitting the coded email to the organizational archive where a copy is stored;
• decrypting the encrypted term index;
• and
• integrating the term index as references to this email into the corporate index