1 | /// <reference types="node" />
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2 | import { BNLike } from './types';
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3 | export interface ECDSASignature {
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4 | v: number;
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5 | r: Buffer;
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6 | s: Buffer;
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7 | }
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8 | export interface ECDSASignatureBuffer {
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9 | v: Buffer;
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10 | r: Buffer;
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11 | s: Buffer;
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12 | }
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13 | /**
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14 | * Returns the ECDSA signature of a message hash.
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15 | */
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16 | export declare function ecsign(msgHash: Buffer, privateKey: Buffer, chainId?: number): ECDSASignature;
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17 | export declare function ecsign(msgHash: Buffer, privateKey: Buffer, chainId: BNLike): ECDSASignatureBuffer;
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18 | /**
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19 | * ECDSA public key recovery from signature.
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20 | * @returns Recovered public key
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21 | */
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22 | export declare const ecrecover: (msgHash: Buffer, v: BNLike, r: Buffer, s: Buffer, chainId?: BNLike | undefined) => Buffer;
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23 | /**
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24 | * Convert signature parameters into the format of `eth_sign` RPC method.
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25 | * @returns Signature
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26 | */
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27 | export declare const toRpcSig: (v: BNLike, r: Buffer, s: Buffer, chainId?: BNLike | undefined) => string;
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28 | /**
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29 | * Convert signature parameters into the format of Compact Signature Representation (EIP-2098).
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30 | * @returns Signature
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31 | */
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32 | export declare const toCompactSig: (v: BNLike, r: Buffer, s: Buffer, chainId?: BNLike | undefined) => string;
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33 | /**
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34 | * Convert signature format of the `eth_sign` RPC method to signature parameters
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35 | * NOTE: all because of a bug in geth: https://github.com/ethereum/go-ethereum/issues/2053
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36 | */
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37 | export declare const fromRpcSig: (sig: string) => ECDSASignature;
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38 | /**
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39 | * Validate a ECDSA signature.
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40 | * @param homesteadOrLater Indicates whether this is being used on either the homestead hardfork or a later one
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41 | */
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42 | export declare const isValidSignature: (v: BNLike, r: Buffer, s: Buffer, homesteadOrLater?: boolean, chainId?: BNLike | undefined) => boolean;
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43 | /**
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44 | * Returns the keccak-256 hash of `message`, prefixed with the header used by the `eth_sign` RPC call.
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45 | * The output of this function can be fed into `ecsign` to produce the same signature as the `eth_sign`
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46 | * call for a given `message`, or fed to `ecrecover` along with a signature to recover the public key
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47 | * used to produce the signature.
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48 | */
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49 | export declare const hashPersonalMessage: (message: Buffer) => Buffer;
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