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[JA] Fix collapsed appearance of account codes #1993

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Jul 11, 2023
Merged

[JA] Fix collapsed appearance of account codes #1993

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10 changes: 5 additions & 5 deletions content/concepts/payment-system-basics/accounts/accounts.ja.md
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Original file line number Diff line number Diff line change
Expand Up @@ -125,7 +125,7 @@ XRP Ledgerのアドレスは、[base58][]_形式のディクショナリ_`rpshna

1. 次の必須アルゴリズムをインポートします。SHA-256、RIPEMD160、base58。base58のディクショナリーを設定します。

'use strict';
'use strict';
const assert = require('assert');
const crypto = require('crypto');
const R_B58_DICT = 'rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz';
Expand All @@ -136,29 +136,29 @@ XRP Ledgerのアドレスは、[base58][]_形式のディクショナリ_`rpshna

2. 33バイトのECDSA secp256k1公開鍵、または32バイトのEd25519公開鍵で始めます。Ed25519キーの場合は、キーの前にバイト`0xED`を付けます。

const pubkey_hex =
const pubkey_hex =
'ED9434799226374926EDA3B54B1B461B4ABF7237962EAE18528FEA67595397FA32';
const pubkey = Buffer.from(pubkey_hex, 'hex');
assert(pubkey.length == 33);

3. 公開鍵のSHA-256ハッシュの[RIPEMD160](https://en.wikipedia.org/wiki/RIPEMD)ハッシュを計算します。この値は「Account ID」です。

const pubkey_inner_hash = crypto.createHash('sha256').update(pubkey);
const pubkey_inner_hash = crypto.createHash('sha256').update(pubkey);
const pubkey_outer_hash = crypto.createHash('ripemd160');
pubkey_outer_hash.update(pubkey_inner_hash.digest());
const account_id = pubkey_outer_hash.digest();

4. アカウントIDのSHA-256ハッシュのSHA-256ハッシュを計算します。最初の4バイトを使用ます。この値が「チェックサム」です。

const address_type_prefix = Buffer.from([0x00]);
const address_type_prefix = Buffer.from([0x00]);
const payload = Buffer.concat([address_type_prefix, account_id]);
const chksum_hash1 = crypto.createHash('sha256').update(payload).digest();
const chksum_hash2 = crypto.createHash('sha256').update(chksum_hash1).digest();
const checksum = chksum_hash2.slice(0,4);

5. ペイロードとチェックサムを連結します。連結バッファーのbase58値を計算します。この結果が、該当のアドレスになります。

const dataToEncode = Buffer.concat([payload, checksum]);
const dataToEncode = Buffer.concat([payload, checksum]);
const address = base58.encode(dataToEncode);
console.log(address);
// rDTXLQ7ZKZVKz33zJbHjgVShjsBnqMBhmN
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