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PURB (cryptography)

In cryptography, a padded uniform random blob or PURB is a discipline for encrypted data formats designed to minimize unintended information leakage either from its encryption format metadata or from its total length.

Trade, Properties of PURBs & Encoding and decoding PURBs

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Explore the main themes, entities and connections around PURB (cryptography). Start with the topic map, then use the sections below for research and deeper semantic analysis.

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Properties of PURBs

8 related topics

Encoding and decoding PURBs

8 related topics

Tradeoffs and limitations

2 related topics

Overview

1 related topics

Topics to explore

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Overview

Properties of PURBs

Encoding and decoding PURBs

Tradeoffs and limitations

Advanced semantic analysis

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Map overview Semantic statistics

PURB (cryptography)

Nodes24
Edges23
Triples16
Avg. degree1.92
Density0.083333
Components1

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Important terminology Word statistics

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Important terminology

purb encrypted metadata information data encoding padding length purbs padded objects encryption format decoding overhead bits random formats leakage total

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Pretty Good Privacyinstance ofpractice contrasts with traditional encrypted data formats0.80text
which include cleartext metadata encoding information such as the application that created the datainstance ofpractice contrasts with traditional encrypted data formats0.80text
the data format versioninstance ofpractice contrasts with traditional encrypted data formats0.80text
the number of recipients the data is encrypted forinstance ofpractice contrasts with traditional encrypted data formats0.80text
the identities or public keys of the recipientsinstance ofpractice contrasts with traditional encrypted data formats0.80text
and the ciphers or suites that were used to encrypt the datainstance ofpractice contrasts with traditional encrypted data formats0.80text
identifying all usersinstance ofor traffic analysis techniques0.80text
groupsinstance ofor traffic analysis techniques0.80text
and associated public keys involved in a conversation from an encrypted message observed between only two of them.In additioninstance ofor traffic analysis techniques0.80text
a PURB is padded to a constrained set of possible lengthsinstance ofor traffic analysis techniques0.80text
in order to minimize the amount of information the encrypted data could potentially leak to observers via its total lengthinstance ofor traffic analysis techniques0.80text
files or bit strings up to Minstance ofencrypted objects0.80text

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