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Title: 请教一个比特币地址的问题 Post by: realdos on May 12, 2013, 09:12:45 PM 目前通过网上的资料，可以知道比特币的地址产生流程：
0 - Having a private ECDSA key 18E14A7B6A307F426A94F8114701E7C8E774E7F9A47E2C2035DB29A206321725 1 - Take the corresponding public key generated with it (65 bytes, 1 byte 0x04, 32 bytes corresponding to X coordinate, 32 bytes corresponding to Y coordinate) 0450863AD64A87AE8A2FE83C1AF1A8403CB53F53E486D8511DAD8A04887E5B23522CD470243453A 299FA9E77237716103ABC11A1DF38855ED6F2EE187E9C582BA6 2 - Perform SHA-256 hashing on the public key 600FFE422B4E00731A59557A5CCA46CC183944191006324A447BDB2D98D4B408 3 - Perform RIPEMD-160 hashing on the result of SHA-256 010966776006953D5567439E5E39F86A0D273BEE 4 - Add version byte in front of RIPEMD-160 hash (0x00 for Main Network) 00010966776006953D5567439E5E39F86A0D273BEE 5 - Perform SHA-256 hash on the extended RIPEMD-160 result 445C7A8007A93D8733188288BB320A8FE2DEBD2AE1B47F0F50BC10BAE845C094 6 - Perform SHA-256 hash on the result of the previous SHA-256 hash D61967F63C7DD183914A4AE452C9F6AD5D462CE3D277798075B107615C1A8A30 7 - Take the first 4 bytes of the second SHA-256 hash. This is the address checksum D61967F6 8 - Add the 4 checksum bytes from point 7 at the end of extended RIPEMD-160 hash from point 4. This is the 25-byte binary Bitcoin Address. 00010966776006953D5567439E5E39F86A0D273BEED61967F6 9 - Convert the result from a byte string into a base58 string using Base58Check encoding. This is the most commonly used Bitcoin Address format 16UwLL9Risc3QfPqBUvKofHmBQ7wMtjvM 其他流程都好懂，但是第1步，从私匙里获得对应的公匙，这个是怎么拿到的呢？有没有相应的资料可以看看？ Title: Re: 请教一个比特币地址的问题 Post by: jl2012 on May 13, 2013, 04:05:37 AM https://en.bitcoin.it/wiki/Secp256k1
Title: Re: 请教一个比特币地址的问题 Post by: wdq4587 on May 13, 2013, 06:44:06 AM 公开密钥体系是同时生成一对公钥和私钥吧？如果这种体系公钥和私钥是对称的，公钥无法推导出私钥，反之亦然，不然这个体系就被破了。
Title: Re: 请教一个比特币地址的问题 Post by: qufo on May 14, 2013, 02:33:21 PM 同时生成一对的。没法推导。
Title: Re: 请教一个比特币地址的问题 Post by: jl2012 on May 14, 2013, 03:13:38 PM Title: Re: 请教一个比特币地址的问题 Post by: Gufeng on May 14, 2013, 03:18:59 PM 你可以参考一下该文。最后面有具体的公式。
https://bitcointalk.org/index.php?topic=174583.0 |