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30 lines
750 B
Markdown
30 lines
750 B
Markdown
---
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title: "412-lectures"
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aliases:
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tags:
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---
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# Lecture 7
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copmuter security
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- physical
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- software (authenticity correctness)
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- information (CIA/ IAS octave)
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- network
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cryptography can be bad because
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- you are still giving access to data in some form
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- how long will the cipher remain secure
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- managing keys can be challenging
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crypto in CIA
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- c - hide information
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- i - check for changes, checksums, MACs, Digital signatures
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- a - not directly, but indirectly, validate authentity of network link usage
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fallible machines
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- ram corruption, fade or malfunction of storage media, software issues (fs bugs, compression bugs, etc)
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- solution
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- estimate probability of failures, determine how many trials to achieve a certain level of confidence
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