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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
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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purb encrypted metadata information data encoding padding length purbs padded objects encryption format decoding overhead bits random formats leakage total
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Pretty Good Privacy | instance of | practice contrasts with traditional encrypted data formats | 0.80 | text |
| which include cleartext metadata encoding information such as the application that created the data | instance of | practice contrasts with traditional encrypted data formats | 0.80 | text |
| the data format version | instance of | practice contrasts with traditional encrypted data formats | 0.80 | text |
| the number of recipients the data is encrypted for | instance of | practice contrasts with traditional encrypted data formats | 0.80 | text |
| the identities or public keys of the recipients | instance of | practice contrasts with traditional encrypted data formats | 0.80 | text |
| and the ciphers or suites that were used to encrypt the data | instance of | practice contrasts with traditional encrypted data formats | 0.80 | text |
| identifying all users | instance of | or traffic analysis techniques | 0.80 | text |
| groups | instance of | or traffic analysis techniques | 0.80 | text |
| and associated public keys involved in a conversation from an encrypted message observed between only two of them.In addition | instance of | or traffic analysis techniques | 0.80 | text |
| a PURB is padded to a constrained set of possible lengths | instance of | or traffic analysis techniques | 0.80 | text |
| in order to minimize the amount of information the encrypted data could potentially leak to observers via its total length | instance of | or traffic analysis techniques | 0.80 | text |
| files or bit strings up to M | instance of | encrypted objects | 0.80 | text |
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