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Author Topic: How many addresses can generate one private key?  (Read 527 times)
filord777
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May 02, 2014, 05:11:28 PM
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I hear that one private key can generate many addresses. Is it possible to generate a million addresses by only one private key?
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BurtW
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May 02, 2014, 06:10:51 PM
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You have that backwards.

On average a single Bitcoin address will map to 2256-160 = 296 key pairs.

That is way more than a million.

But a given key pair will map to only one Bitcoin address.

(Well a key pair has two possible representations so in fact there are two Bitcoin addresses for each key pair because the two different representations of the public key:  compressed and uncompressed, each map to a different Bitcoin address)

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May 02, 2014, 10:46:28 PM
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You have that backwards.

On average a single Bitcoin address will map to 2256-160 = 296 key pairs.

That is way more than a million.

But a given key pair will map to only one Bitcoin address.

(Well a key pair has two possible representations so in fact there are two Bitcoin addresses for each key pair because the two different representations of the public key:  compressed and uncompressed, each map to a different Bitcoin address)

Exactly. Your question is incorrectly phrased, addresses cannot generate private keys, it's private keys that generate addresses.
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