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    Cryptography GCHQ’s not-so-smart idea to spy on encrypted messaging apps is branded ‘absolute madness’

    Cryptography GCHQ’s not-so-smart idea to spy on encrypted messaging apps is branded ‘absolute madness’


    GCHQ’s not-so-smart idea to spy on encrypted messaging apps is branded ‘absolute madness’

    Posted: 30 Nov 2018 05:25 AM PST

    Three-Rotor Enigma Machine Up for Auction Today

    Posted: 30 Nov 2018 08:57 AM PST

    Secret sharing Scheme

    Posted: 30 Nov 2018 10:11 AM PST

    confused about differences between 5 out of 5 threshold secret sharing scheme and 4 out of 5 threshold secret sharing scheme. how would the share and reconstruction schemes be different?

    For 5 out of 5 scheme:

    Sharing (m):

    s1:0,1}^l

    s2= s1 xor m1 .....until s10

    return(s1...s10)

    Reconstruction (s1...s10): s1 xor ...s10

    how would it be done for 4 out of 5 threshold sharing scheme ? do we just now only have sharing and reconstruction until s8 block?

    submitted by /u/abducool
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