Cryptography Free Start Collision In SHA-3

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• Free Start Collision In SHA-3
• Cryptokey Routing
• Why can't I derive gpg subkeys

Free Start Collision In SHA-3 Posted: 28 Nov 2017 09:43 PM PST This is a free start collision in SHA-3 leveraging the underlining Keccak permutation. As such this should show the importance of state truncation when generating hash values. Where: def keccak(list_of_25): for index in range(24): #list_of_25 = theta(rho(pi(chi(iota(list_of_25,index))))) list_of_25=iota(chi(pi(rho(theta(list_of_25)))),index) return(list_of_25) list_of_25=[ '0000001111010101000001111010010101001010010111111010100111011001', '0111101010110110011000110001100011111000111001010011101000001110', '1001100100110001101010000100100111010110011101100011000101001010', '0111010001110000101000010100010011110001011000111011110100010011', '0011100011100001011000101110110011101000010101110101110001001111', '0010000100101100011000010011100100000101010101010111111101011100', '0100100000101011111110011011001000110111010101011101110111100001', '0100011111010000001110010100110010111110000011110000010001010000', '0101111001101111110010110101100111111110101001110000001000111100', '1010001110011101101001100011010001011111010100011110011000001011', '1010110010110100101011010111010000011100001101110001010000110011', '0010101011011000001110011101100010010010110001011110110101100010', '0000110110100000000011100100000010001001100111010111000000000111', '1010111100011001001111111010011001010111100111111110110000010000', '1110010001100111001100010010001000000010110000110100011011000101', '1000000101101001101101000111001010100011011101111110101010101101', '0010010100100111001100100100111110010001110101111110010110010000', '1101011010001000111100100010100101110010000010001000010010110110', '1110011110010011011111010001010101001011011100000010111100011111', '0011101011111111011000101110110101100010001010110010011101101100', '1110001011111011001011011010000001100010111011111010010000000010', '0010101111101101101010110010001001010011010110000001001000010101', '1010110010100111100100110011000101001101100010010110001001100010', '1111100100010101100000111100001010111100010101111110100011000101', '0011111000111100101111100110101011000110010111110010011001111101'] submitted by /u/revirdtaeskcab [link] [comments]

Cryptokey Routing Posted: 28 Nov 2017 11:46 AM PST submitted by /u/natashachenkov [link] [comments]

Why can't I derive gpg subkeys Posted: 28 Nov 2017 07:54 PM PST Dear all, I am a casual crypto use and curious about things. I am a Bitcoin user as well and I particular appreciate Hierarchical Wallets. I was wondering what is the reason why gpg keys, while using a similar master + subkeys approach, does not really allow encryption when the master key is missing (say I have stripped it). Maybe I am doing it wrong, actually not quite sure. I guess the question is whether gpg has Hierarchical keys at this point. Thanks everyone! submitted by /u/curious-crypto-user [link] [comments]

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