arno/bitcoinbook
1
0
Fork 0
mirror of https://github.com/bitcoinbook/bitcoinbook synced 2024-11-23 00:28:14 +00:00
Code Issues Releases Wiki Activity

Added "discrete logarithm".

Browse Source
This commit is contained in:
Richard Kiss 2014-07-01 16:47:44 -07:00
parent 3664a80bba
commit c6967c19cf
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
ch04.asciidoc
View File

@ -100,7 +100,7 @@ A private key is just a number. A public key can be generated from any number, u
[[pubkey]]
==== Public Keys
The public key is calculated from the private key using elliptic curve multiplication, which is irreversible: latexmath:[\(K = k * G\)]+ where +k+ is the private key, +G+ is a constant point called the _Generator Point_ and +K+ is the resulting public key. The reverse operation, division -- calculating +k+ if you know +K+ -- is as difficult as trying all possible values of +k+, i.e. a brute-force search. Before we demonstrate how to generate a public key from a private key, let's look at Elliptic Curve Cryptography in a bit more detail.
The public key is calculated from the private key using elliptic curve multiplication, which is irreversible: latexmath:[\(K = k * G\)]+ where +k+ is the private key, +G+ is a constant point called the _Generator Point_ and +K+ is the resulting public key. The reverse operation, known as "finding the discrete logarithm" -- calculating +k+ if you know +K+ -- is as difficult as trying all possible values of +k+, i.e. a brute-force search. Before we demonstrate how to generate a public key from a private key, let's look at Elliptic Curve Cryptography in a bit more detail.
[[elliptic_curve]]
==== Elliptic Curve Cryptography Explained