Cryptography – Communication system using cryptography – Symmetric key cryptography
Reexamination Certificate
2005-10-31
2010-02-23
Dada, Beemnet W (Department: 2435)
Cryptography
Communication system using cryptography
Symmetric key cryptography
C380S281000
Reexamination Certificate
active
07668313
ABSTRACT:
A method for protecting secret keys, such as HDCP device key sets, during the manufacturing process is disclosed. In particular, the present invention comprises a method for securely sending and receiving data, such as HDCP device key sets, for use in a cryptosystem. In operation, a first party, referred to as a sender (107) is to send original data (106) to a second party, referred to as a recipient (100). To facilitate the secure transmission, the recipient (100) randomly generates (101) a session key (102) and encrypts it with its private key-encryption key (103). The recipient then securely sends both the encrypted and unencrypted session keys to the sender. The sender (107) then encrypts the original data (106) using the unencrypted session key (102) and includes the encrypted data (108) along with the encrypted session key (104) to the recipient (100). The recipient (100) then decrypts the encrypted session key (104) using the private key-encryption key (103) and then decrypts the original data (106).
REFERENCES:
patent: 6259789 (2001-07-01), Paone
patent: 6275588 (2001-08-01), Videcrantz et al.
patent: 6505301 (2003-01-01), Matyas et al.
patent: 7353388 (2008-04-01), Gilman et al.
patent: 7383440 (2008-06-01), Miller et al.
patent: 7565537 (2009-07-01), Morais et al.
patent: 2005/0267845 (2005-12-01), Oh et al.
Brady III Wade J.
Dada Beemnet W
Patti John J.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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