byGalax
38 lines
1.7 KiB
TypeScript
38 lines
1.7 KiB
TypeScript
import type { CryptoBackend } from '@chat-app/shared/crypto';
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import _sodium from 'libsodium-wrappers-sumo';
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// Build the libsodium-backed CryptoBackend. Awaits the WASM ready-gate once,
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// then returns a synchronous implementation of the CryptoBackend contract.
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export async function createLibsodiumBackend(): Promise<CryptoBackend> {
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await _sodium.ready;
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const s = _sodium;
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return {
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name: 'libsodium-wrappers',
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nonceLength: s.crypto_box_NONCEBYTES,
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publicKeyLength: s.crypto_box_PUBLICKEYBYTES,
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privateKeyLength: s.crypto_box_SECRETKEYBYTES,
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secretboxKeyLength: s.crypto_secretbox_KEYBYTES,
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secretboxNonceLength: s.crypto_secretbox_NONCEBYTES,
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randomBytes: (n: number) => s.randombytes_buf(n),
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generateKeyPair: () => {
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const kp = s.crypto_box_keypair();
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return { publicKey: kp.publicKey, privateKey: kp.privateKey };
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},
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box: (plaintext, nonce, recipientPublicKey, senderPrivateKey) =>
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s.crypto_box_easy(plaintext, nonce, recipientPublicKey, senderPrivateKey),
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boxOpen: (ciphertext, nonce, senderPublicKey, recipientPrivateKey) =>
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s.crypto_box_open_easy(ciphertext, nonce, senderPublicKey, recipientPrivateKey),
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secretbox: (plaintext, nonce, key) => s.crypto_secretbox_easy(plaintext, nonce, key),
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secretboxOpen: (ciphertext, nonce, key) => s.crypto_secretbox_open_easy(ciphertext, nonce, key),
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pwhashConsts: {
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OPSLIMIT_MODERATE: s.crypto_pwhash_OPSLIMIT_MODERATE,
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MEMLIMIT_MODERATE: s.crypto_pwhash_MEMLIMIT_MODERATE,
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ALG_ARGON2ID13: s.crypto_pwhash_ALG_ARGON2ID13,
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},
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pwhash: (outLen, password, salt, opslimit, memlimit, alg) =>
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s.crypto_pwhash(outLen, password, salt, opslimit, memlimit, alg),
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scalarMultBase: (priv) => s.crypto_scalarmult_base(priv),
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};
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}
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