ΥڡϤƤʥ֥åޡɲΥڡޤϤƤʥ֥åޡ Υڡlivedoor åפɲΥڡޤlivedoor å

ܼ

ȤˤŹ˴ؤڡǤϡ­ʤäꡢäҤ򤷤ƤꤹȤޤ塢ĽͽǤ

ŹΡذŹ浻ѤΤ٤ơ٤ȯ䤵Ƥޤ鿴ԸΰŹܤǤޤǰŹܤ˲٤ĩ路ĤĤޤƤޤäعβǺǤʻˤưŹ꤬ʤɤˤǤ

ذŹ浻ѤΤ٤ơ

̣򻲾ȤƤAmazonǤȯǤ

Źμ

ŹʹȰŹ沽ƤޤºݤˤϤǤϤʤ¿Ϥܤ̤

Ź沽

Ź沽ȤϡϤʿʸȤƥ르ꥺˤơ츫Ȥξ󤬤狼ʤ褦ʸŹʸȤˤ뤳ȤǤ롣Ź沽ϡƥѸCIAˤCConfidentialityƿˤ뤳ȤǤ롣

Τ褦˰Źʸ뤳ȤŹ沽Źʸʿʸ᤹Ȥ*1Ȥ

Ź沽¸ˡϻѤ븰μˤäơ̸ŹϤȸŹϤʬव롣

̾

̾Ȥϡ󤬵¤󤵤ƤʤȤǧ뤳ȤǤ롣르ꥺˤ̾åȥڥơԤϤΥڥϤȤƸڥ르ꥺưȽ̤ˤäƥåδǧ롣ĤޤꡢCIAIIntegrityˤ뤳ȤǤ롣

̾Ⱦ2बΤϡѤ븰ˤäƸƤ̾Ѥ뤫ǤФȤ櫓ǤʤΤ褦ʤΡˡ

  • ̾̾ȸڸƱ
  • ̾ȸڸƱ

Ź浻Ѥƻ

Ȥʤؿܦ

  • ϥåؿ
  • negligibleؿ
  • one-way funciton
    • trapdoor one-way funciton
    • hard-core predicate

ȤʤŹץȥ

ʸ

  • غǿŹ浻ѡ


*1 沽ȤϤʤ
*2 ̩ŹϤȤƤФ뤬𤹤ΤȤǤ϶̸ŹϤ줹