24 lines
1018 B
TypeScript
24 lines
1018 B
TypeScript
// Copyright 2017-2021 @polkadot/util-crypto authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import type { HexString } from '@polkadot/util/types';
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import { assert, u8aToU8a } from '@polkadot/util';
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import { vrfVerify } from '@polkadot/wasm-crypto';
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const EMPTY_U8A = new Uint8Array();
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/**
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* @name sr25519VrfVerify
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* @description Verify with sr25519 vrf verification
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*/
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export function sr25519VrfVerify (message: HexString | Uint8Array | string, signOutput: HexString | string | Uint8Array, publicKey: HexString | Uint8Array | string, context: HexString | string | Uint8Array = EMPTY_U8A, extra: HexString | string | Uint8Array = EMPTY_U8A): boolean {
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const publicKeyU8a = u8aToU8a(publicKey);
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const proofU8a = u8aToU8a(signOutput);
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assert(publicKeyU8a.length === 32, 'Invalid publicKey, expected 32-bytes');
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assert(proofU8a.length === 96, 'Invalid vrfSign output, expected 96 bytes');
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return vrfVerify(publicKeyU8a, u8aToU8a(context), u8aToU8a(message), u8aToU8a(extra), proofU8a);
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}
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