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Genrates a pair of secret keys that share the same public key
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| import { nip19, getPublicKey } from 'nostr-tools' | |
| import crypto from 'crypto' | |
| // secp256k1の位数 | |
| const n = 115792089237316195423570985008687907852837564279074904382605163141518161494337n | |
| // シードから秘密鍵ペアを生成 | |
| function generatePair(seed) { | |
| // シードをSHA256でハッシュ化して32バイトの値を作る | |
| const hash = crypto.createHash('sha256').update(seed).digest() | |
| // ハッシュ値を大きな整数に変換 | |
| let sk1 = BigInt('0x' + hash.toString('hex')) | |
| // 有効範囲[1, n-1]に収める | |
| if (sk1 >= n) sk1 = sk1 % (n - 1n) + 1n | |
| if (sk1 === 0n) sk1 = 1n | |
| // ペアとなる秘密鍵を計算（n - sk1） | |
| const sk2 = n - sk1 | |
| // 16進数文字列に変換（64文字にパディング） | |
| const sk1_hex = sk1.toString(16).padStart(64, '0') | |
| const sk2_hex = sk2.toString(16).padStart(64, '0') | |
| // nsec形式にエンコード | |
| const nsec1 = nip19.nsecEncode(Buffer.from(sk1_hex, 'hex')) | |
| const nsec2 = nip19.nsecEncode(Buffer.from(sk2_hex, 'hex')) | |
| // 公開鍵を生成（両方同じになるはず） | |
| const pubkey1 = getPublicKey(sk1_hex) | |
| const pubkey2 = getPublicKey(sk2_hex) | |
| const npub1 = nip19.npubEncode(pubkey1) | |
| const npub2 = nip19.npubEncode(pubkey2) | |
| return { nsec1, nsec2, npub1, npub2 } | |
| } | |
| // コマンドライン引数からシード値を取得 | |
| const seed = process.argv[2] | |
| // シードが指定されていない場合はヘルプを表示 | |
| if (!seed) { | |
| console.log('使い方: nsec-pair-gen.js <シード値>') | |
| console.log('例: node nsec-pair-gen.js "my secret seed"') | |
| process.exit(1) | |
| } | |
| // ペアを生成 | |
| const result = generatePair(seed) | |
| console.log(`シード: "${seed}"`) | |
| console.log(`秘密鍵1: ${result.nsec1}`) | |
| console.log(`秘密鍵2: ${result.nsec2}`) | |
| console.log(`公開鍵1: ${result.npub1}`) | |
| console.log(`公開鍵2: ${result.npub2}`) |
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