Invention Grant
- Patent Title: System and method for encrypting and verifying messages using three-phase encryption
- Patent Title (中): 使用三相加密加密和验证消息的系统和方法
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Application No.: US10464891Application Date: 2003-06-19
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Publication No.: US06996233B2Publication Date: 2006-02-07
- Inventor: Daniel Alan Brokenshire , David Craft , Harm Peter Hofstee , Mohammad Peyravian
- Applicant: Daniel Alan Brokenshire , David Craft , Harm Peter Hofstee , Mohammad Peyravian
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: VanLeeuwen & VanLeeuwen
- Agent Leslie A. VanLeeuwen; Diana R. Gerhardt
- Main IPC: H04L9/00
- IPC: H04L9/00 ; H04K1/00

Abstract:
A method and system for encrypting and verifying the integrity of a message using a three-phase encryption process is provided. A source having a secret master key that is shared with a target receives the message and generates a random number. The source then generates: a first set of intermediate values from the message and the random number; a second set of intermediate values from the first set of values; and a cipher text from the second set of values. At the three phases, the values are generated using the encryption function of a block cipher encryption/decryption algorithm. The random number and the cipher text are transmitted to the target, which decrypts the cipher text by reversing the encryption process. The target verifies the integrity of the message by comparing the received random number with the random number extracted from the decrypted cipher text.
Public/Granted literature
- US20050008162A1 System and method for encrypting and verifying messages using three-phase encryption Public/Granted day:2005-01-13
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