| 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 { assert, u8aToU8a } from '@polkadot/util';
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| 4 | const SEC_LEN = 64;
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| 5 | const PUB_LEN = 32;
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| 6 | const TOT_LEN = SEC_LEN + PUB_LEN;
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| 7 | export function sr25519PairFromU8a(full) {
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| 8 | const fullU8a = u8aToU8a(full);
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| 9 | assert(fullU8a.length === TOT_LEN, () => `Expected keypair with ${TOT_LEN} bytes, found ${fullU8a.length}`);
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| 10 | return {
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| 11 | publicKey: fullU8a.slice(SEC_LEN, TOT_LEN),
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| 12 | secretKey: fullU8a.slice(0, SEC_LEN)
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| 13 | };
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| 14 | } |
| \ | No newline at end of file |