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| ブロックチェーン合意形成× | 楕円曲線暗号× | |
|---|---|---|
| 分野 | 暗号学 | 暗号学 |
| 系統 | Machine learning | Machine learning |
| 提唱年≠ | 2008 | 1985 |
| 提唱者≠ | Satoshi Nakamoto | Neal Koblitz |
| 種類≠ | consensus mechanism | asymmetric encryption and key agreement |
| 原典≠ | Nakamoto, S. (2008). Bitcoin: A peer-to-peer electronic cash system. Retrieved from https://bitcoin.org/bitcoin.pdf link ↗ | Miller, V. S. (1985). Use of Elliptic Curves in Cryptography. In Proceedings of the Advances in Cryptology - CRYPTO 1985, LNCS 218, pp. 417-426. DOI ↗ |
| 別名≠ | consensus algorithm, PoW, PoS, distributed consensus | ECC, elliptic curve cryptosystem |
| 関連 | 3 | 3 |
| 概要≠ | Blockchain consensus mechanisms are distributed protocols that enable a network of untrusted nodes to agree on the correct state of a ledger without a central authority. Introduced with Bitcoin in 2008, consensus mechanisms like Proof of Work and Proof of Stake ensure that modifications to the blockchain cannot be made unilaterally by any participant. Consensus mechanisms are fundamental to cryptocurrency and blockchain applications, making them resistant to tampering and censorship. | Elliptic Curve Cryptography (ECC) is a public-key cryptosystem based on the algebraic structure of elliptic curves over finite fields. Proposed independently by Neal Koblitz and Victor Miller in 1985, ECC offers equivalent security to RSA with much smaller key sizes. Modern cryptography increasingly favors ECC for its efficiency: a 256-bit ECC key provides security comparable to a 2048-bit RSA key, making it ideal for constrained environments and high-performance systems. |
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