Systems and methods for information security using one-time pad

Abstract

Methods of encryption and decryption using a key generated from a common document are disclosed. In one embodiment, the method of encryption includes: (1) generating a single pointer to a position in a common document, wherein the pointer includes either a page number and a line number of the common document or a chapter number and a paragraph number of the common document, (2) receiving a message to be encrypted, (3) retrieving, from a computer memory, a key from the common document based on the pointer and having a length at least equaling a length of the message, (4) applying a cryptographic function to characters of the message based on characters of the key (5) causing the message to be stored in a memory device and (6) generating a new pointer to a different position in the common document.

What is claimed is: 
     
         1 . A method of encryption using a key generated from a common document, comprising:
 generating a single pointer to a position in a common document, wherein said pointer includes either a page number and a line number of said common document or a chapter number and a paragraph number of said common document;   receiving a message to be encrypted;   retrieving, from a computer memory, a key from said common document based on said pointer and having a length at least equaling a length of said message;   applying a cryptographic function to characters of said message based on characters of said key;   causing said message to be stored in a memory device; and   generating a new pointer to a different position in said common document.   
     
     
         2 . The method as recited in  claim 1  wherein said message is selected from the group consisting of:
 text, and 
 a file. 
 
     
     
         3 . The method as recited in  claim 1  wherein said pointer is formatted such that it appears to be a telephone number. 
     
     
         4 . The method as recited in  claim 1  further comprising storing results of said applying. 
     
     
         5 . The method as recited in  claim 1  further comprising displaying said new pointer to a user on an output device. 
     
     
         6 . The method as recited in  claim 1  wherein said cryptographic function is user-selected. 
     
     
         7 . The method as recited in  claim 1  wherein said retrieving comprises applying a formula to said pointer before carrying out said searching. 
     
     
         8 . The method as recited in  claim 1  wherein said retrieving comprises applying an offset to said pointer before carrying out said searching. 
     
     
         9 . The method as recited in  claim 8  wherein said offset is a user-selected offset. 
     
     
         10 . The method as recited in  claim 1  wherein said retrieving said key from said common document is based on said pointer, a formula applied to said pointer and an offset applied to said pointer. 
     
     
         11 . A method of decryption using a key generated from a common document, comprising:
 receiving a password;   receiving a message to be decrypted;   retrieving, from a computer memory, a key from a common document based on said password and having a length at least equaling a length of said message, wherein said password is a pointer to a position in said common document;   applying a cryptographic function to characters of said message based on characters of said key;   causing said message to be stored in a memory device; and   generating a new password that points to a different position in said common document.   
     
     
         12 . The method as recited in  claim 11  wherein said message is selected from the group consisting of:
 text, and 
 a file. 
 
     
     
         13 . The method as recited in  claim 11  wherein said password includes either a page number and a line number of said common document or a chapter number and a paragraph number of said common document. 
     
     
         14 . The method as recited in  claim 11  further comprising storing results of said applying. 
     
     
         15 . The method as recited in  claim 11  further comprising displaying said new password to a user on an output device. 
     
     
         16 . The method as recited in  claim 11  wherein said cryptographic function is user-selected. 
     
     
         17 . The method as recited in  claim 11  wherein said retrieving comprises applying a formula to said password before carrying out said searching. 
     
     
         18 . The method as recited in  claim 11  wherein said retrieving comprises applying a user-selected offset to said password before carrying out said searching. 
     
     
         19 . The method as recited in  claim 11  wherein said password is formatted such that it appears to be a telephone number. 
     
     
         20 . The method as recited in  claim 11  wherein said retrieving said key from said common document is based on said password, a formula applied to said password and an offset applied to said password.