spb/os-vault Public

1import WalletCoreC2import Foundation3// SPDX-License-Identifier: Apache-2.04//5// Copyright © 2017 Trust Wallet.6//7// This is a GENERATED FILE, changes made here WILL BE LOST.8//910import Foundation1112/// Bitcoin message signing and verification.13///14/// Bitcoin Core and some other wallets support a message signing & verification format, to create a proof (a signature)15/// that someone has access to the private keys of a specific address.16/// This feature currently works on old legacy addresses only.17public struct BitcoinMessageSigner {1819    /// Sign a message.20    ///21    /// - Parameter privateKey:: the private key used for signing22    /// - Parameter address:: the address that matches the privateKey, must be a legacy address (P2PKH)23    /// - Parameter message:: A custom message which is input to the signing.24    /// - Note: Address is derived assuming compressed public key format.25    /// - Returns:s the signature, Base64-encoded.  On invalid input empty string is returned. Returned object needs to be deleteed after use.26    public static func signMessage(privateKey: PrivateKey, address: String, message: String) -> String {27        let addressString = TWStringCreateWithNSString(address)28        defer {29            TWStringDelete(addressString)30        }31        let messageString = TWStringCreateWithNSString(message)32        defer {33            TWStringDelete(messageString)34        }35        return TWStringNSString(TWBitcoinMessageSignerSignMessage(privateKey.rawValue, addressString, messageString))36    }3738    /// Verify signature for a message.39    ///40    /// - Parameter address:: address to use, only legacy is supported41    /// - Parameter message:: the message signed (without prefix)42    /// - Parameter signature:: in Base64-encoded form.43    /// - Returns:s false on any invalid input (does not throw).44    public static func verifyMessage(address: String, message: String, signature: String) -> Bool {45        let addressString = TWStringCreateWithNSString(address)46        defer {47            TWStringDelete(addressString)48        }49        let messageString = TWStringCreateWithNSString(message)50        defer {51            TWStringDelete(messageString)52        }53        let signatureString = TWStringCreateWithNSString(signature)54        defer {55            TWStringDelete(signatureString)56        }57        return TWBitcoinMessageSignerVerifyMessage(addressString, messageString, signatureString)58    }596061    init() {62    }636465}66