I pānuitia e Google te whakaurunga o ngā maramara i runga i te tūāpapa pūtake tuwhera OpenTitan i roto i ngā taputapu Chromebook. Ko ngā Chromebook ngā taputapu tuatahi e wātea ana i runga i te arumoni kua whakauruhia ki te OpenTitan. Kei te whakamahere a Google ki te tīmata ki te whakatinana i ngā pūnaha tūmau e hangai ana ki te OpenTitan i roto i ōna pokapū raraunga i muri mai i tēnei tau. Kei te whakarite a Nuvoton i te hanga papatipu o ngā maramara. Kua tīmata hoki te mahi i runga i te putanga tuarua o te maramara, e āhei ai te whakamahi i ngā rauropi whakamunatanga muri-rauemi ML-DSA me te ML-KEM mō te whakaara haumaru me te whakamana. Ka whakatinanahia e ēnei rauropi ngā tikanga whakamunatanga i runga i te ariā whatunga.
Mā te kaupapa OpenTitan ka whakaratohia he tūāpapa mō te waihanga i ngā wāhanga taputapu pono (RoT, Root of Trust rānei) e whakamahia ana hei whakarite i te pono o ngā wāhanga taputapu pūnaha me ngā pūmanawa. I whakatūria a OpenTitan e Google i te tau 2018, engari i whakawhitia ki te whakahaere kore-moni lowRISC i te tau 2019. Mai i taua wā, kua uru atu ngā kamupene pēnei i a Western Digital, Seagate, Nuvoton Technology, Winbond, Rivos, zeroRISC, me G+D Mobile Security ki tana whanaketanga. Kua whakaputaina te waehere me ngā whakatakotoranga wāhanga taputapu o te kaupapa i raro i te raihana Apache 2.0. Ko ngā otinga e whakamahia ana i roto i te OpenTitan e ahu mai ana i ngā hangarau kua whakamahia kētia i roto i ngā tohu USB whakamunatanga a Google Titan me ngā maramara TPM mō te whakaara manatoko kua tāutahia ki runga. ngā tūmau i runga i ngā hanganga o Google, tae atu ki ngā Chromebook me ngā taputapu Pixel.
Kaore i rite ki nga whakatinanatanga Root of Trust o naianei, kei te whakawhanakehia a OpenTitan me te kaupapa "haumaru na roto i te maarama", ko te tikanga kia waatea te waehere me nga hoahoa me te whakamahi i tetahi tukanga whanaketanga tuwhera kore e herea ki nga kaihoko motuhake, ki nga kaihanga maramara ranei. Ko OpenTitan te puna tuwhera tuatahi mo te whakatinanatanga Root of Trust ka tukuna ki te maakete e tautoko ana i te tikanga whakapumau i muri mai i te quantum i runga i te SLH-DSA (Sphincs+) hainatanga whakangao algorithm, he atete ki te kaha kino i runga i nga rorohiko quantum.
Ka taea te whakamahi i ngā maramara e hangai ana ki te OpenTitan i roto i ngā papahoahoa tūmau, ngā kāri whatunga, ngā taputapu kaihoko, ngā pouara, me ngā taputapu IoT hei manatoko i te pūmanawa me ngā wāhanga whakaara (tiaki i ngā wāhanga pūnaha nui mai i te whakarerekētanga), te whakaputa i ngā tohu tautuhi pūnaha ahurei whakamuna (tiaki i te whakararuraru taputapu), te whakarato ratonga e pā ana ki te haumarutanga, te tiaki i ngā kī whakamuna (wehewehe i ngā kī mēnā ka uru atu te kaiwhakaeke ki ngā taputapu), me te pupuri i tētahi rangitaki arotake motuhake e kore e taea te whakatika, te muku rānei.
Kei roto i te OpenTitan nga poraka arorau e hiahiatia ana i roto i nga maramara RoT, penei i te microprocessor tuwhera i runga i te hoahoanga RISC-V (RV32IMCB Ibex), nga kaikohikohikohikohikohikohikohikohikohikohikohikohikohikohikohikohikohiko, he taputapu hangahanga tau matapōkere, he kaiwhakahaere matua me te tautoko DICE, he tikanga mo te rokiroki raraunga haumaru i roto i te mahara tuturu me te mahi, nga hangarau haumarutanga, nga poraka I/O me nga waahanga whawhai haumaru. Ka whakaratohia ano hoki e te taputapu nga poraka me te whakatinanatanga o nga tikanga whakamunatanga angamaheni penei i te AES me te HMAC-SHA256, me te whakatere o nga mahi pangarau e whakamahia ana i roto i nga huringa mo te mahi me nga waitohu mamati i runga i nga taviri a te iwi.
Source: opennet.ru
