mirror of
https://github.com/XRPLF/xrpl-dev-portal.git
synced 2026-04-29 15:37:48 +00:00
45 lines
1.9 KiB
JavaScript
45 lines
1.9 KiB
JavaScript
'use strict'
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const assert = require('assert')
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const crypto = require('crypto')
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const R_B58_DICT = 'rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz'
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const base58 = require('base-x')(R_B58_DICT)
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assert(crypto.getHashes().includes('sha256'))
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assert(crypto.getHashes().includes('ripemd160'))
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// Start with a public key. secp256k1 keys should be 33 bytes;
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// Ed25519 keys should be 32 bytes prefixed with 0xED (a total of 33 bytes).
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// Ed25519 key:
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const pubkey_hex = 'ED9434799226374926EDA3B54B1B461B4ABF7237962EAE18528FEA67595397FA32'
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//// secp256k1 key:
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// const pubkey_hex =
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// '0303E20EC6B4A39A629815AE02C0A1393B9225E3B890CAE45B59F42FA29BE9668D';
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const pubkey = Buffer.from(pubkey_hex, 'hex')
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assert(pubkey.length == 33)
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// Calculate the RIPEMD160 hash of the SHA-256 hash of the public key
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// This is the "Account ID"
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const pubkey_inner_hash = crypto.createHash('sha256').update(pubkey)
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const pubkey_outer_hash = crypto.createHash('ripemd160')
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pubkey_outer_hash.update(pubkey_inner_hash.digest())
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const account_id = pubkey_outer_hash.digest()
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// Prefix the Account ID with the type prefix for an XRPL Classic Address, then
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// calculate a checksum as the first 4 bytes of the SHA-256 of the SHA-256
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// of the Account ID
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const address_type_prefix = Buffer.from([0x00])
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const payload = Buffer.concat([address_type_prefix, account_id])
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const chksum_hash1 = crypto.createHash('sha256').update(payload).digest()
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const chksum_hash2 = crypto.createHash('sha256').update(chksum_hash1).digest()
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const checksum = chksum_hash2.slice(0, 4)
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// Concatenate the address type prefix, the payload, and the checksum.
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// Base-58 encode the encoded value to get the address.
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const dataToEncode = Buffer.concat([payload, checksum])
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const address = base58.encode(dataToEncode)
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console.log(address)
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// rnBFvgZphmN39GWzUJeUitaP22Fr9be75H (secp256k1 example)
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// rDTXLQ7ZKZVKz33zJbHjgVShjsBnqMBhmN (Ed25519 example)
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