公开(公告)号：US20050210275A1

公开(公告)日：2005-09-22

申请号：US11128097

申请日：2005-05-11

申请人： James Homing ,  W. Sibert ,  Robert Tarjan ,  Umesh Maheshwari ,  William Home ,  Andrew Wright ,  Lesley Matheson ,  Susan Owicki

发明人： James Homing ,  W. Sibert ,  Robert Tarjan ,  Umesh Maheshwari ,  William Home ,  Andrew Wright ,  Lesley Matheson ,  Susan Owicki

IPC分类号： G06F9/44 ,  G06F9/45 ,  G06F21/00

CPC分类号： G06F21/14 ,  G06F21/125 ,  G06F2221/07

摘要： Systems and methods are disclosed for protecting a computer program from unauthorized analysis and modification. Obfuscation transformations can be applied to the computer program's local structure, control graph, and/or data structure to render the program more difficult to understand and/or modify. Tamper-resistance mechanisms can be incorporated into the computer program to detect attempts to tamper with the program's operation. Once an attempt to tamper with the computer program is detected, the computer program reports it to an external agent, ceases normal operation, and/or reverses any modifications made by the attempted tampering. The computer program can also be watermarked to facilitate identification of its owner. The obfuscation, tamper-resistance, and watermarking transformations can be applied to the computer program's source code, object code, or executable image.