请教一个比特币地址的问题

[realdos]

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？

[jl2012]

https://en.bitcoin.it/wiki/Secp256k1

[wdq4587]

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。

[qufo]

同时生成一对的。没法推导。

[jl2012]

同时生成一对的。没法推导。

沒法推導又如何算出來, 不要亂說吧

[Gufeng]

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