Generate Address

Instructions

Create a function generateAddress() that generates a pair of cryptographic keys using the elliptic curve secp256k1. The return value is an object with members:

privateKey, a private key as a string (pkcs8/pem format)
publicKey, the corresponding public key as a string (spki/pem)
address, an address to identify this account. The address is the hash sha256 of the publicKey (in format spki/der) prepended with '01'

Usage

console.log(generateAddress())

// expected result :
{
  privateKey: '-----BEGIN PRIVATE KEY-----\n' +
    'MIGEAgEAMBAGByqGSM49AgEGBSuBBAAKBG0wawIBAQQg6wEoiAc7tEeOfh1HPVMw\n' +
    'z/eNG/D30JziVWjq8bW35MChRANCAAQP0WsGc3VmBsXO6Iz+LKxPPWNRb2DqUJKY\n' +
    '8Qh7qVvB4rExjUR0DhgUJrTC9tCPy3aiYGbXYLzuXTuOBcPbUiJq\n' +
    '-----END PRIVATE KEY-----\n',
  publicKey: '-----BEGIN PUBLIC KEY-----\n' +
    'MFYwEAYHKoZIzj0CAQYFK4EEAAoDQgAED9FrBnN1ZgbFzuiM/iysTz1jUW9g6lCS\n' +
    'mPEIe6lbweKxMY1EdA4YFCa0wvbQj8t2omBm12C87l07jgXD21Iiag==\n' +
    '-----END PUBLIC KEY-----\n',
  address: '01598fbb0e68eaa369d361f7b59157d80a91b2b78de74bc2ff71f6a44b272af368'
}

Relevance

The secp256k1 curve is used several blockchains to generate keys.
An user account is identified using an address. The address is computed from the public key using hash functions, splits and concatenations.
- In Bitcoin hash160 is used in the process and the address starts with '1', '3' or 'bc1'.
- In Ethereum keccak-256 is used and addresses are appended with 'Ox' that denotes an hexadecimal number.

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Generate Address

Instructions

Usage

Relevance

Notions

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