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A note on quantum safe symmetric key growing

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arxiv 1707.02766 v1 pith:G4RLSKJ2 submitted 2017-07-10 quant-ph

A note on quantum safe symmetric key growing

classification quant-ph
keywords quantumdistributiongrowingpre-sharednotesafesecretsymmetric
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Quantum key distribution is a cryptographic primitive for the distribution of symmetric encryption keys between two parties that possess a pre-shared secret. Since the pre-shared secret is a requirement, quantum key distribution may be viewed as a key growing protocol. We note that the use of pre-shared secrets coupled with access to randomness beacons may enable key growing which, though not secure from an information-theoretic standpoint, remains quantum safe.

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