Hoy en día, solo los vagos no han escrito sobre la tecnología blockchain, las criptomonedas y lo genial que es. Pero este artículo no elogiará esta tecnología, solo hablaremos sobre sus deficiencias y las formas de eliminarlas.

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Town Crier

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Town Crier — TC Server.



TC Contract front end TC. C_U (- ) TC Server. TC Server Relay, ( ) . Enclave prog_encl, , , prog_encl - .

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Relay Client Interface, TCP, Blockchain Interface. Client Interface . ecall timestamp, sk_TC att ( ), att Intel Attestation Service (IAS), timestamp time service. Blockchain Interface datagrams. Geth — Ethereum Relay RPC calls.

TEE, TC , 3 . 15 tx/sec, 20 65 tx/sec, , Bitcoin — 26 tx/sec.

DECO

DECO (Decentralized Oracles for TLS) CCS’20, , TLS . .

DECO c TLS , - , , , TLS. DECO prover (-), verifier () web-server ( ).

DECO , (prover) D (verifier), D TLS- S. , TLS TLS- , (provenance difficulty).

DECO K_Enc K_Mac. Q -, R , K_Mac, TLS . DECO , «» K_Mac (prover), . K_Mac prover verifier — K_p^Mac K_v^Mac. K_Mac K_p^Mac ⊕ K_v^Mac = K_Mac.

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Spectre Foreshadow (L1TF), Prime and Probe. - . Spectre-v2, .

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