Changes between Version 13 and Version 14 of NewCaps/WhatCouldGoWrong

Timestamp:

2009-10-11T02:14:36Z (15 years ago)

Author:

davidsarah

Comment:

K1 and plaintext might be encrypted by different enc. schemes

NewCaps/WhatCouldGoWrong

@@ -3 +3 @@
 ||#||''what bad thing could happen''||''how''||''who could do it''||''what could they target''||''what crypto property prevents it''||''how expensive to brute force'' [footnote 5]||
 ||1||shape-shifter immutable file [footnote 1]||collide read-cap (''R'',''T'')||creator of a file||their own file||the hash function's and cap format's collision resistance on the read-cap (''R'',''T''). This also depends on the encryption of ''K1'' being deterministic and correct.||2^(''n''+''t'')/2^||
-||2||unauthorized read||attack the encryption of ''K1'' with ''R''||anyone||any one file||the cipher's security and the secrecy of the read-key ''R''||2^''n''^||
+||2||unauthorized read||attack the encryption of ''K1'' with ''R''||anyone||any one file||the security of the encryption scheme used for ''K1'', and the secrecy of the read-key ''R''||2^''n''^||
 ||3||forgery of immutable file||generate a matching read-cap (''R'',''T'') for someone else's file||anyone||any one file||the hash function's and cap format's second-pre-image resistance on (''R'',''T''). This also depends on the encryption of ''K1'' being deterministic and correct.||2^''n''+''t''^||
 ||4||roadblock or speedbump [footnote 2]||generate (''K1enc'',''Dhash'',''V'') that hash to someone else's ''T'', and copy their ''S''||anyone||any one file||the hash function's and cap format's collision resistance on ''T''||2^''t''^||
-||5||unauthorized read||attack the encryption of the plaintext with ''K1''||anyone||any one file||the cipher's security and the secrecy of the encryption key ''K1''||2^''k''^||
+||5||unauthorized read||attack the encryption of the plaintext with ''K1''||anyone||any one file||the security of the encryption scheme used for the plaintext, and the secrecy of the encryption key ''K1''||2^''k''^||
 ||6||unauthorized read||figure out the input to the hash function that generates ''S''||anyone||any one file||the hash function's pre-image resistance on ''S''||brute force on ''R'' is !#2||
 ||7||unauthorized deletion||brute force KD||anyone||any one file||secrecy of ''KD''||2^''d''^||