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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | 2x 2x 2x 2x 2x 2x 10x 2x 2x 2x 2x 2x 2x 2x 2x 10x 10x 10x 10x 2x 2x 2x 2x 2x 2x 4x 4x 4x 4x 1x 3x 1x 2x 2x 2x 2x 1x 1x 2x 3x 3x 2x 2x 2x 2x 2x 2x | /* * Copyright © 2019 Lisk Foundation * * See the LICENSE file at the top-level directory of this distribution * for licensing information. * * Unless otherwise agreed in a custom licensing agreement with the Lisk Foundation, * no part of this software, including this file, may be copied, modified, * propagated, or distributed except according to the terms contained in the * LICENSE file. * * Removal or modification of this copyright notice is prohibited. * */ import { encode as encodeVarInt } from 'varuint-bitcoin'; import { bufferToHex, hexToBuffer } from './buffer'; import { SIGNED_MESSAGE_PREFIX } from './constants'; import { hash } from './hash'; import { getPrivateAndPublicKeyBytesFromPassphrase } from './keys'; import { NACL_SIGN_PUBLICKEY_LENGTH, NACL_SIGN_SIGNATURE_LENGTH, signDetached, verifyDetached, } from './nacl'; const createHeader = (text: string): string => `-----${text}-----`; const signedMessageHeader = createHeader('BEGIN LISK SIGNED MESSAGE'); const messageHeader = createHeader('MESSAGE'); const publicKeyHeader = createHeader('PUBLIC KEY'); const signatureHeader = createHeader('SIGNATURE'); const signatureFooter = createHeader('END LISK SIGNED MESSAGE'); const SIGNED_MESSAGE_PREFIX_BYTES = Buffer.from(SIGNED_MESSAGE_PREFIX, 'utf8'); const SIGNED_MESSAGE_PREFIX_LENGTH = encodeVarInt(SIGNED_MESSAGE_PREFIX.length); export interface SignedMessageWithOnePassphrase { readonly message: string; readonly publicKey: string; readonly signature: string; } export const digestMessage = (message: string): Buffer => { const msgBytes = Buffer.from(message, 'utf8'); const msgLenBytes = encodeVarInt(message.length); const dataBytes = Buffer.concat([ SIGNED_MESSAGE_PREFIX_LENGTH, SIGNED_MESSAGE_PREFIX_BYTES, msgLenBytes, msgBytes, ]); return hash(hash(dataBytes)); }; export const signMessageWithPassphrase = ( message: string, passphrase: string, ): SignedMessageWithOnePassphrase => { const msgBytes = digestMessage(message); const { privateKeyBytes, publicKeyBytes, } = getPrivateAndPublicKeyBytesFromPassphrase(passphrase); const signature = signDetached(msgBytes, privateKeyBytes); return { message, publicKey: bufferToHex(publicKeyBytes), signature: bufferToHex(signature), }; }; export const verifyMessageWithPublicKey = ({ message, publicKey, signature, }: SignedMessageWithOnePassphrase): boolean => { const msgBytes = digestMessage(message); const signatureBytes = hexToBuffer(signature); const publicKeyBytes = hexToBuffer(publicKey); if (publicKeyBytes.length !== NACL_SIGN_PUBLICKEY_LENGTH) { throw new Error( `Invalid publicKey, expected ${NACL_SIGN_PUBLICKEY_LENGTH}-byte publicKey`, ); } if (signatureBytes.length !== NACL_SIGN_SIGNATURE_LENGTH) { throw new Error( `Invalid signature length, expected ${NACL_SIGN_SIGNATURE_LENGTH}-byte signature`, ); } return verifyDetached(msgBytes, signatureBytes, publicKeyBytes); }; export interface SignedMessage { readonly message: string; readonly publicKey: string; readonly signature: string; } export const printSignedMessage = ({ message, signature, publicKey, }: SignedMessage): string => [ signedMessageHeader, messageHeader, message, publicKeyHeader, publicKey, signatureHeader, signature, signatureFooter, ] .filter(Boolean) .join('\n'); export const signAndPrintMessage = ( message: string, passphrase: string, ): string => { const signedMessage = signMessageWithPassphrase(message, passphrase); return printSignedMessage(signedMessage); }; export const signDataWithPrivateKey = ( data: Buffer, privateKey: Buffer, ): string => { const signature = signDetached(data, privateKey); return bufferToHex(signature); }; export const signDataWithPassphrase = ( data: Buffer, passphrase: string, ): string => { const { privateKeyBytes } = getPrivateAndPublicKeyBytesFromPassphrase( passphrase, ); return signDataWithPrivateKey(data, privateKeyBytes); }; export const signData = signDataWithPassphrase; export const verifyData = ( data: Buffer, signature: string, publicKey: string, ): boolean => verifyDetached(data, hexToBuffer(signature), hexToBuffer(publicKey)); |