cryptology ʥץȥեˤȤϰۤʤ뤬̣ǰŹˡ1ĤȤߤʤΤˡsteganography ʥƥΥեˤ롥ꥷ stégeín (to cover) grápheín (to write) ˴ŤϢʤꡤСʤפǤ (cf. stegosaur ϡ֤ʤ줿εפΰաѸ thatch ĸƱ *steg- ̤ˡץȥեïǤŹǤȸƤʬ褦ŵŪʰŹؤΤФơƥΥեϤƤ⡤⤽Ź椬ȤϵŤʤפؤ㤨СȾä㩿ʤɤǻ˥åФǤ֤ʸ⤭Ф֤֤ФפƥΥե1ĤŵǤ롥åΤΤ˼äƸŪ˲᤹ΤΤǤϤʤåϤ餺ˡŹԤԤδ֤˲ϩƤ뤳ȼΤʤ褦ˤƿˡǤʤξԤȤ߹碌ƿٹ礤Ȥ⤢ˡ
ƥΥեμʬहȡʲΤ褦ˤʤʾܤϡꥯˡذŹɻŵ٤4ϡ֥ƥΥե (pp. 398--431) ȡˡ
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