spb/os-vault Public

1import Foundation23protocol HexToData {4    func ask_hexToData() -> Data5}67extension UInt32: HexToData {8    func ask_hexToData() -> Data {9        var v = byteSwapped10        let data = Data(bytes: &v, count: MemoryLayout<UInt32>.size)11        return data12    }13}1415extension UInt8: HexToData {16    func ask_hexToData() -> Data {17        var v = self18        let data = Data(bytes: &v, count: MemoryLayout<UInt8>.size)19        return data20    }21}2223extension String {24    /// Create `Data` from hexadecimal string representation25    ///26    /// This takes a hexadecimal representation and creates a `Data` object. Note, if the string has any spaces or non-hex characters (e.g. starts with '<' and with a '>'), those are ignored and only hex characters are processed.27    ///28    /// - returns: Data represented by this hexadecimal string.2930    func ask_hexadecimal() -> Data? {31        var data = Data(capacity: count / 2)3233        let regex = try! NSRegularExpression(pattern: "[0-9a-f]{1,2}", options: .caseInsensitive)34        regex.enumerateMatches(in: self, range: NSMakeRange(0, utf16.count)) { match, _, _ in35            let byteString = (self as NSString).substring(with: match!.range)36            var num = UInt8(byteString, radix: 16)!37            data.append(&num, count: 1)38        }3940        guard !data.isEmpty else { return nil }4142        return data43    }44}4546extension Data {47    /// Create hexadecimal string representation of `Data` object.48    ///49    /// - returns: `String` representation of this `Data` object.5051    func ask_hexadecimal() -> String {52        map { String(format: "%02x", $0) }53            .joined(separator: "")54    }55}5657extension Data {58    func ask_BTCHash256() -> Data {59        sha256().sha256()60    }6162    public func ask_BTCHash160() -> Data {63        RIPEMD.digest(sha256())64    }6566    func ask_BTCHash160String() -> String {67        ask_BTCHash160().toHexString()68    }6970    func ck_reversedData() -> Data {71        Data(reversed())72    }7374    func ask_base58Check() -> String {75        Base58.encode([UInt8](self))76    }7778    static func dataFromHexString(hexString _: String) -> Data {79        let data = Data()8081        return data82    }83}8485// Copy from CryptoSwift/UInt32+Extension.swift86extension UInt32 {87    init<T: Collection>(bytes: T) where T.Iterator.Element == UInt8, T.Index == Int {88        self = UInt32(bytes: bytes, fromIndex: bytes.startIndex)89    }9091    init<T: Collection>(bytes: T, fromIndex index: T.Index) where T.Iterator.Element == UInt8, T.Index == Int {92        let val0 = UInt32(bytes[index.advanced(by: 0)]) << 2493        let val1 = UInt32(bytes[index.advanced(by: 1)]) << 1694        let val2 = UInt32(bytes[index.advanced(by: 2)]) << 895        let val3 = UInt32(bytes[index.advanced(by: 3)])9697        self = val0 | val1 | val2 | val398    }99}100