Software cryptographic apparatus and method

Details Software cryptographic apparatus and method Software cryptographic apparatus and method

1982-12-22

1985-12-31

Cangialosi, Salvatore

Telegraphy

Systems

Printing

178 2209, H04L 902

Patent

active

045623058

ABSTRACT:
An improved software cryptographic apparatus and method are disclosed. The apparatus and method enables the encryption of the object code of a program so as to enable relocatable code operations. The apparatus and method will adapt program execution for a mixture of encrypted and nonencrypted code. A particular advantage of the apparatus and method is its accommodation of interrupts and branches while carrying out the cryptographic function.

REFERENCES:
patent: 3996449 (1976-12-01), Attanasio et al.
patent: 4120030 (1978-10-01), Johnstone
patent: 4168396 (1979-09-01), Best
patent: 4183085 (1980-01-01), Roberts et al.
patent: 4465901 (1984-08-01), Best
patent: 4471163 (1984-09-01), Donald

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