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Bitcoin geeky blog

Essence of Bitcoin is innovation that may be related to remittance and asset holding rights and liberation and freedom.

Hierarchical Deterministic Wallets

Oveview The type is leading-edge deterministic wallets that is described in BIP 0032.Just have to copy root-seed,You can restore overall HD wallet,backup of millions keys or HD wallet , and export.It can generate public key without users h…

Mnemonic code

Overview Mnemonic code is English words representing random numbers used as Wallet master keys. Passphrase is easy to remember for human beings(passphrase 12 to 24 words). Mnemonic is used to regenerate the seed (master key), regenerating …

Key format

key

Overview Bitcoin has notation method of some kinds in private key and public key.Why Bitcoin has some kinds of notation? Because if you adopted compressed notation, It's possible to reduce the size of the public key by 50%! That means we c…

Bitcoin address

Overview Bitcoin address represent receiver of funds,it look like bank account. The address produced from public key. Show below example of a bitcoin address:Bitcoin address example 15oYSxBcM5deLicKoqwNL2iuAJXpdoc3GL ※27-32 digit alphanume…

Public key

key

Overview Public key indicate to destination of funds. The public key is private key encrypted with elliptic curve cryptography.Public key example 0458e0d3f7cd6d54347a25523dee480199e59541d849abcd4223538397ded94 e30f4f10af03bb48a1af2051c529f…

Elliptic curve cryptography

Elliptic curve I'll description about elliptic curve to base on Elliptic Curve Cryptography(ECC).y^2=x^3+ax+bWhen this equation solution equal "zero",the point connection become elliptic curve. case of a=-1,b=1: y^2 = x^3 - x + 1 Finite fi…

Private key

key

Private key One of the key pairs in public key cryptography is the private key. Use the private key to control access to transaction. Private key was chosen randomly integer (256 bit) from between 1 to p. "p" is「2^256 - 2^32 - 2^9 - 2^8 -…

Public key cryptography

Overview Bitcoin adopts public key cryptography for bitcoin exchange. By knowing about algorism of public key cryptography, easy to get understanding about private key and public key. Now I'd like to talk about cryptography used some publi…