(13) US5812662 Method and apparatus to protect computer software

這篇專利應該是第一個申請的美國專利，但等了很久才拿到。這篇也是 software protection的專利，因為我寫了太多種做法，所以 reference的專利倒是很多，當然也和軟體保護很重要有關，所以也審核的特別久。

Reference by:

1	7,634,661	Microsoft	Manifest-based trusted agent management in a trusted operating system environment
2	7,602,655	Mediatek	Embedded system
3	7,587,589	Microsoft	Saving and retrieving data based on symmetric key encryption
4	7,577,840	Microsoft	Transferring application secrets in a trusted operating system environment
5	7,577,839	Microsoft	Transferring application secrets in a trusted operating system environment
6	7,565,697	ECD	Systems and methods for preventing unauthorized use of digital content
7	7,549,922	Atronic	Software security for gaming devices
8	7,543,336	Microsoft	System and method for secure storage of data using public and private keys
9	7,543,335	Microsoft	Method and system for allowing code to be securely initialized in a computer
10	7,529,919	Microsoft	Boot blocks for software
11	7,512,786	Microsoft	Client-side boot domains and boot rules
12	7,487,365	Microsoft	Saving and retrieving data based on symmetric key encryption
13	7,484,095	Sun Micro	System for communicating program data between a first device and a second device
14	7,480,744	Mediatek	Method and apparatus for one time programming
15	7,457,412	Microsoft	System and method for authenticating an operating system to a central processing unit, providing the CPU/OS with secure storage, and authenticating the CPU/OS to a third party
16	7,434,263	Microsoft	System and method for secure storage data using a key
17	7,424,612	Microsoft	Saving and retrieving data based on symmetric key encryption
18	7,424,606	Microsoft	System and method for authenticating an operating system
19	7,415,620	Microsoft	System and method for authenticating an operating system to a central processing unit, providing the CPU/OS with secure storage, and authenticating the CPU/OS to a third party
20	7,356,682	Microsoft	Attesting to a value of a register and/or memory region
21	7,328,453	ECD Sys	Systems and methods for the prevention of unauthorized use and manipulation of digital content
22	7,305,553	Microsoft	Manifest-based trusted agent management in a trusted operating system environment
23	7,302,709	Microsoft	Key-based secure storage
24	7,281,244	Sun	Using a digital fingerprint to commit loaded data in a device
25	7,272,830	Sun	Ordering program data for loading on a device
26	7,257,707	Microsoft	Manifest-based trusted agent management in a trusted operating system environment
27	7,243,230	Microsoft	Transferring application secrets in a trusted operating system environment
28	7,237,123	ECD	Systems and methods for preventing unauthorized use of digital content
29	7,222,331	Sun	Linking of virtual methods
30	7,194,092	Microsoft	Key-based secure storage
31	7,174,457	Microsoft	System and method for authenticating an operating system to a central processing unit, providing the CPU/OS with secure storage, and authenticating the CPU/OS to a third party
32	7,165,246	Sun	Optimized representation of data type information in program verification
33	7,159,240	Microsoft	Operating system upgrades in a trusted operating system environment
34	7,139,915	Microsoft	Method and apparatus for authenticating an open system application to a portable IC device
35	7,137,004	Microsoft	Manifest-based trusted agent management in a trusted operating system environment
36	7,107,463	Microsoft	Manifest-based trusted agent management in a trusted operating system environment
37	7,076,705	Renesas	Semiconductor integrated circuit having bonding optional function
38	7,032,240	Pace Anti-Pira	Portable authorization device for authorizing use of protected information and associated method
39	7,024,564	SafeNet	Software protection device and method
40	7,020,772	Microsoft	Secure execution of program code
41	7,010,684	Microsoft	Method and apparatus for authenticating an open system application to a portable IC device
42	6,978,365	Microsoft	Client-side boot domains and boot rules
43	6,976,200	Renesas	Semiconductor integrated circuit having bonding optional function
44	6,938,164	Microsoft	Method and system for allowing code to be securely initialized in a computer
45	6,848,045	Rainbow	Integrated USB connector for personal token
46	6,820,063	Microsoft	Controlling access to content based on certificates and access predicates
47	6,813,695	Infineon	Memory access method and circuit configuration
48	6,757,824	Microsoft	Client-side boot domains and boot rules
49	6,751,598	Hitachi	Digital content distribution system and protection method
50	6,681,212	Zeng	Internet-based automated system and a method for software copyright protection and sales

51	6,671,808	Rainbow	USB-compliant personal key
52	6,609,199	Microsoft	Method and apparatus for authenticating an open system application to a portable IC device
53	6,523,119	Rainbow	Software protection device and method
54	6,345,359	Raytheon	In-line decryption for protecting embedded software
55	6,330,670	Microsoft	Digital rights management operating system
56	6,327,652	Microsoft	Loading and identifying a digital rights management operating system
57	6,035,368	Philips	Protection method against eeprom-directed intrusion into a mobile communication device that has a processor, and a device having such protection mechanism