Computer systems to inhibit unauthorized copying, unauthorized usage, and automated cracking of protected software

摘要: A method and apparatus are provided for inhibiting unauthorized copying, usage automated cracking of proprietary software used in computer systems. The systems execute protected programs, which by encapsulation and/or encryption. To provide security against copying software, means that detect inhibit programs. These will destroy or make inaccessible information the CPU during conditions when could occur. also store interrupt contexts secret to prevent implementation cracking. Additional features may be allow operation as a general purpose system, where programs distributed using public key cryptography is convert from this distribution form execution form.