The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Normalmente mantemos muitas informações confidenciais em unidades de disco rígido e unidades de estado sólido. Quando queremos apagar tais informações para evitar o vazamento, temos que substituir a sequência de informações por uma sequência de símbolos independente da informação. A substituição é necessária apenas em locais onde os símbolos substituídos são diferentes dos símbolos originais. Então, o custo das substituições, como o número de símbolos substituídos para apagar informações, é importante. Neste artigo, esclarecemos o custo mínimo, como o número mínimo de substituições para apagar informações sob critérios de independência fracos e fortes. O primeiro critério (resp. o último) representa que a informação mútua entre a sequência original e a sequência sobrescrita normalizada (resp. não normalizada) pelo comprimento das sequências é menor que um determinado valor desejado.
Tetsunao MATSUTA
Tokyo Institute of Technology
Tomohiko UYEMATSU
Tokyo Institute of Technology
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Tetsunao MATSUTA, Tomohiko UYEMATSU, "An Information-Theoretical Analysis of the Minimum Cost to Erase Information" in IEICE TRANSACTIONS on Fundamentals,
vol. E101-A, no. 12, pp. 2099-2109, December 2018, doi: 10.1587/transfun.E101.A.2099.
Abstract: We normally hold a lot of confidential information in hard disk drives and solid-state drives. When we want to erase such information to prevent the leakage, we have to overwrite the sequence of information with a sequence of symbols independent of the information. The overwriting is needed only at places where overwritten symbols are different from original symbols. Then, the cost of overwrites such as the number of overwritten symbols to erase information is important. In this paper, we clarify the minimum cost such as the minimum number of overwrites to erase information under weak and strong independence criteria. The former (resp. the latter) criterion represents that the mutual information between the original sequence and the overwritten sequence normalized (resp. not normalized) by the length of the sequences is less than a given desired value.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E101.A.2099/_p
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@ARTICLE{e101-a_12_2099,
author={Tetsunao MATSUTA, Tomohiko UYEMATSU, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={An Information-Theoretical Analysis of the Minimum Cost to Erase Information},
year={2018},
volume={E101-A},
number={12},
pages={2099-2109},
abstract={We normally hold a lot of confidential information in hard disk drives and solid-state drives. When we want to erase such information to prevent the leakage, we have to overwrite the sequence of information with a sequence of symbols independent of the information. The overwriting is needed only at places where overwritten symbols are different from original symbols. Then, the cost of overwrites such as the number of overwritten symbols to erase information is important. In this paper, we clarify the minimum cost such as the minimum number of overwrites to erase information under weak and strong independence criteria. The former (resp. the latter) criterion represents that the mutual information between the original sequence and the overwritten sequence normalized (resp. not normalized) by the length of the sequences is less than a given desired value.},
keywords={},
doi={10.1587/transfun.E101.A.2099},
ISSN={1745-1337},
month={December},}
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TY - JOUR
TI - An Information-Theoretical Analysis of the Minimum Cost to Erase Information
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2099
EP - 2109
AU - Tetsunao MATSUTA
AU - Tomohiko UYEMATSU
PY - 2018
DO - 10.1587/transfun.E101.A.2099
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E101-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 2018
AB - We normally hold a lot of confidential information in hard disk drives and solid-state drives. When we want to erase such information to prevent the leakage, we have to overwrite the sequence of information with a sequence of symbols independent of the information. The overwriting is needed only at places where overwritten symbols are different from original symbols. Then, the cost of overwrites such as the number of overwritten symbols to erase information is important. In this paper, we clarify the minimum cost such as the minimum number of overwrites to erase information under weak and strong independence criteria. The former (resp. the latter) criterion represents that the mutual information between the original sequence and the overwritten sequence normalized (resp. not normalized) by the length of the sequences is less than a given desired value.
ER -