Yakakwana mberi zvakavanzika (PFS) akatsanangura

Perfect forward secrecy (PFS) chinhu chekuchengetedza chinoshandiswa mu cryptographic system (semuenzaniso. VPNconnections) kuchengetedza data kubva pakukanganiswa, kunyangwe makiyi ekunyorera akatorwa kana kufungidzira nemumwe munhu asina mvumo.

PFS inowanikwa nekugara uchichinja makiyi encryption anoshandiswa mu encryption. Nenzira iyi, chete huwandu hushoma hwe data hunoburitswa kana munhu asingatenderwe wechitatu akabata makiyi ekunyorera.

Perfect forward secrecy kunowedzera kuchengetedzwa kwe VPN- kubatana

Imwe yezvinonyanya kushandiswa zve perfect forward secrecy wanga uri VPN- kubatana (Virtual Private Network). VPNkubatanidza kunoita kuti vashandisi vatange yakachengeteka, yakavharidzirwa yekubatanidza kune imwe network paInternet.

Izvi zvinogona kubatsira kuona kuti data haigone kubvumwa painenge ichifambiswa, kana kubvumidza vashandisi kuti vasvike kunetiweki ayo angadai asingawanikwe kwavari.

Apo a VPNkubatana kunotangwa, makiyi maviri encryption anogadzirwa: kiyi yeruzhinji uye kiyi yakavanzika. Makiyi eruzhinji anoshandiswa encrypt data inotumirwa paInternet, ukuwo makiyi epachivande achishandiswa kutsikisa data kana yagamuchirwa. Makiyi aya anotsinhaniswa pakati VPN- mutengi uye VPNserver, uye dzinoshandiswa kumisikidza yakachengeteka, yakavharidzirwa kubatana pakati pezviviri.

PFS inoshanda nekugara ichichinja makiyi anoshandiswa encrypt data yako. Panzvimbo pekushandisa kiyi imwechete kunyora data rese rakapfuura VPNkubatanidza, kiyi nyowani, yenguva pfupi inogadzirwa kune yega yega data kutamiswa. Kana data yatumirwa, inovharirwa neiyi kiyi yechinguvana, uye iye anogamuchira anogona kubva aibvisa nekiyi yakafanana.

Nenzira iyi, munhu wechitatu asina kutenderwa akawana makiyi ekuvharidzira anogona chete kuwana mukana kune yega data kutamiswa. Iyo imwe data ichiri yakachengeteka sezvo yakavharidzirwa nemamwe makiyi. keys.

VPN-kubatanidzwa kunowanzo shandisa ephemeral makiyi e PFS

Kune akati wandei akasiyana matekiniki anogona kushandiswa kuita izvi perfect forward secrecy i VPN- kubatana. Imwe yemaitiro akajairika ndeyekushandisa ephemeral keys, ari makiyi echinguvana anogadzirwa pachikamu chega chega.

Apo a VPNkubatanidza kunotangwa, kiyi nyowani ephemeral inogadzirwa, iyo inoshandiswa encrypt data yese inotumirwa pamusoro pekubatanidza. Kana chikamu chapera, kiyi inomira kushanda uye kiyi nyowani inogadzirwa pane inotevera yekubatanidza.

Verenga zvakawanda pamusoro PFS i ExpressVPNs blog post.