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U.S. Department of Energy
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Effect of Partial Key Knowledge

Technical Report ·
DOI:https://doi.org/10.2172/1763286· OSTI ID:1763286
 [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
For strong cryptologic algorithms, it is often assumed that exhaustive search (AKA "brute force) will take 2b trials, where b is the number of bits of the secret key. What happens, though, if an adversary gains partial knowledge of the secret key? Perhaps he has intercepted a garbled transmission of the key, where he knows the maximum number of garbles, but not where they occur, or perhaps he knows the probability of each bit being correct. How much does this help him?
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
DOE Contract Number:
AC04-94AL85000; NA0003525
OSTI ID:
1763286
Report Number(s):
SAND--2019-14009R; 681544
Country of Publication:
United States
Language:
English

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