| 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 { ed25519KeypairFromSeed, isReady } from '@polkadot/wasm-crypto';
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| 5 | /**
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| 6 | * @name ed25519PairFromSeed
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| 7 | * @summary Creates a new public/secret keypair from a seed.
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| 8 | * @description
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| 9 | * Returns a object containing a `publicKey` & `secretKey` generated from the supplied seed.
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| 10 | * @example
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| 11 | * <BR>
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| 12 | *
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| 13 | * ```javascript
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| 14 | * import { ed25519PairFromSeed } from '@polkadot/util-crypto';
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| 15 | *
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| 16 | * ed25519PairFromSeed(...); // => { secretKey: [...], publicKey: [...] }
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| 17 | * ```
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| 18 | */
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| 19 |
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| 20 | export function ed25519PairFromSeed(seed, onlyJs) {
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| 21 | if (!onlyJs && isReady()) {
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| 22 | const full = ed25519KeypairFromSeed(seed);
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| 23 | return {
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| 24 | publicKey: full.slice(32),
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| 25 | secretKey: full.slice(0, 64)
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| 26 | };
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| 27 | }
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| 28 |
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| 29 | return nacl.sign.keyPair.fromSeed(seed);
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| 30 | } |
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