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myarbrough@oreilly.com 2014-11-18 07:10:26 -08:00
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@ -92,7 +92,7 @@ $ sx newkey
[[pubkey]]
==== Public Keys
((("keys","public")))((("public keys","generating")))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.
((("keys","public")))((("public keys","generating")))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]]