| 1 | // Copyright 2017-2022 @polkadot/util-crypto authors & contributors
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| 2 | // SPDX-License-Identifier: Apache-2.0
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| 3 | import nacl from 'tweetnacl';
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| 4 | import { randomAsU8a } from "../random/asU8a.js";
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| 5 |
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| 6 | /**
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| 7 | * @name naclSeal
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| 8 | * @summary Seals a message using the sender's encrypting secretKey, receiver's public key, and nonce
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| 9 | * @description
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| 10 | * Returns an encrypted message which can be open only by receiver's secretKey. If the `nonce` was not supplied, a random value is generated.
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| 11 | * @example
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| 12 | * <BR>
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| 13 | *
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| 14 | * ```javascript
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| 15 | * import { naclSeal } from '@polkadot/util-crypto';
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| 16 | *
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| 17 | * naclSeal([...], [...], [...], [...]); // => [...]
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| 18 | * ```
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| 19 | */
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| 20 | export function naclSeal(message, senderBoxSecret, receiverBoxPublic, nonce = randomAsU8a(24)) {
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| 21 | return {
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| 22 | nonce,
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| 23 | sealed: nacl.box(message, nonce, receiverBoxPublic, senderBoxSecret)
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| 24 | };
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| 25 | } |
| \ | No newline at end of file |