On t-Error Correcting/All Unidirectional Error Detecting Codes
IEEE Transactions on Computers
New Techniques for Constructing EC/AUED Codes
IEEE Transactions on Computers
Applied cryptography (2nd ed.): protocols, algorithms, and source code in C
Applied cryptography (2nd ed.): protocols, algorithms, and source code in C
Cryptography: Theory and Practice
Cryptography: Theory and Practice
Codes for Detecting and Correcting Unidirectional Errors
Codes for Detecting and Correcting Unidirectional Errors
Handbook of Applied Cryptography
Handbook of Applied Cryptography
Coding Techniques for Digital Recorders
Coding Techniques for Digital Recorders
Asymmetric/Unidirectional Error Correcting and Detecting Codes
IEEE Transactions on Computers
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We present coding methods for protecting against tampering of write-once optical disks, which turns them into a secure digital medium for applications where critical information must be stored in a way that prevents or allows detection of an attempt at falsification. Our method involves adding a small amount of redundancy to a modulated sector of data. This extra redundancy is not used for normal operation, but can be used for determining, say, as a testimony in court, that a disk has not been tampered with