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Class Information
Number: 380/1
Name: Cryptography > Cryptanalysis
Description: Subject matter which includes breaking of a secret code or cipher.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620821 |
Processor including general-purpose and cryptographic functionality in which cryptographic operations are visible to user-specified software |
Nov. 17, 2009 |
| 7620976 |
Portable authentication and access control involving multiple identities |
Nov. 17, 2009 |
| 7617523 |
Fortified authentication on multiple computers using collaborative agents |
Nov. 10, 2009 |
| 7602907 |
Elliptic curve point multiplication |
Oct. 13, 2009 |
| 7602903 |
Cryptography correctness detection methods and apparatuses |
Oct. 13, 2009 |
| 7599488 |
Differential power analysis |
Oct. 6, 2009 |
| 7600255 |
Preventing network denial of service attacks using an accumulated proof-of-work approach |
Oct. 6, 2009 |
| 7587590 |
Encrypted communication apparatus |
Sep. 8, 2009 |
| 7587044 |
Differential power analysis method and apparatus |
Sep. 8, 2009 |
| 7571492 |
Current source for cryptographic processor |
Aug. 4, 2009 |
| 7564969 |
Methodology, system and computer readable medium for detecting file encryption |
Jul. 21, 2009 |
| 7499541 |
Cipher strength evaluation apparatus |
Mar. 3, 2009 |
| 7482946 |
Method and apparatus for camouflaging business-activity information in a telemetry signal |
Jan. 27, 2009 |
| 7482947 |
Camouflaging business-activity information in a telemetry signal through randomization |
Jan. 27, 2009 |
| 7460665 |
Cipher strength evaluation apparatus |
Dec. 2, 2008 |
| 7454625 |
Method and apparatus for protecting a calculation in a cryptographic algorithm |
Nov. 18, 2008 |
| 7450716 |
Device and method for encrypting data |
Nov. 11, 2008 |
| 7430301 |
Method for the enhancement of complex peaks |
Sep. 30, 2008 |
| 7412608 |
Secure data processing unit, and an associated method |
Aug. 12, 2008 |
| 7391865 |
Secure data parser method and system |
Jun. 24, 2008 |
| 7349545 |
Key agreement method in secure communication system using multiple access method |
Mar. 25, 2008 |
| 7302572 |
Portable information storage medium and its authentication method |
Nov. 27, 2007 |
| 7263618 |
Method for binding a program module |
Aug. 28, 2007 |
| 7227947 |
Cryptographic method and cryptographic device |
Jun. 5, 2007 |
| 7187769 |
Method and apparatus for evaluating the strength of an encryption |
Mar. 6, 2007 |
| 7155609 |
Key exchange mechanism for streaming protected media content |
Dec. 26, 2006 |
| 7092930 |
Architecture and method to secure database records from tampering in devices such as postage value dispensing mechanisms |
Aug. 15, 2006 |
| 7089213 |
System and method for producing and verifying secure negotiable instruments |
Aug. 8, 2006 |
| 6996544 |
Multiple party content distribution system and method with rights management features |
Feb. 7, 2006 |
| 6990387 |
Test system for identification and sorting of integrated circuit devices |
Jan. 24, 2006 |
| 6985581 |
Method and apparatus to verify circuit operating conditions |
Jan. 10, 2006 |
| 6983262 |
Server having an automatic management mechanism |
Jan. 3, 2006 |
| 6973570 |
Integrated circuit comprising encryption circuitry selectively enabled by verifying a device |
Dec. 6, 2005 |
| 6965673 |
Method of using transient faults to verify the security of a cryptosystem |
Nov. 15, 2005 |
| 6952478 |
Method and system for performing permutations using permutation instructions based on modified omega and flip stages |
Oct. 4, 2005 |
| 6922472 |
Method and system for performing permutations using permutation instructions based on butterfly networks |
Jul. 26, 2005 |
| 6873706 |
Processing apparatus, program, or system of secret information |
Mar. 29, 2005 |
| 6826547 |
Printer service denial |
Nov. 30, 2004 |
| 6594760 |
System and method for suppressing conducted emissions by a cryptographic device |
Jul. 15, 2003 |
| 6539092 |
Leak-resistant cryptographic indexed key update |
Mar. 25, 2003 |
| 6504929 |
Encryption strength evaluation support apparatus and recording medium recording encryption strength evaluation support program |
Jan. 7, 2003 |
| 6430290 |
Conditional access |
Aug. 6, 2002 |
| 6411715 |
Methods and apparatus for verifying the cryptographic security of a selected private and public key pair without knowing the private key |
Jun. 25, 2002 |
| 6408077 |
Descrambling device of a security element and security element comprising such a device |
Jun. 18, 2002 |
| 6330332 |
Prime number generation apparatus B-smoothness judgement apparatus and computer memory product |
Dec. 11, 2001 |
| 6298135 |
Method of preventing power analysis attacks on microelectronic assemblies |
Oct. 2, 2001 |
| 6295606 |
Method and apparatus for preventing information leakage attacks on a microelectronic assembly |
Sep. 25, 2001 |
| 6269163 |
Enhanced block ciphers with data-dependent rotations |
Jul. 31, 2001 |
| 6192130 |
Information security subscriber trust authority transfer system with private key history transfer |
Feb. 20, 2001 |
| 6145086 |
Security and password mechanisms in a database system |
Nov. 7, 2000 |
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