//
|
// CryptoSwift
|
//
|
// Copyright (C) 2014-2022 Marcin Krzyżanowski <marcin@krzyzanowskim.com>
|
// This software is provided 'as-is', without any express or implied warranty.
|
//
|
// In no event will the authors be held liable for any damages arising from the use of this software.
|
//
|
// Permission is granted to anyone to use this software for any purpose,including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
|
//
|
// - The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation is required.
|
// - Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
|
// - This notice may not be removed or altered from any source or binary distribution.
|
//
|
|
extension Array {
|
@inlinable
|
init(reserveCapacity: Int) {
|
self = Array<Element>()
|
self.reserveCapacity(reserveCapacity)
|
}
|
|
@inlinable
|
var slice: ArraySlice<Element> {
|
self[self.startIndex ..< self.endIndex]
|
}
|
|
@inlinable
|
subscript (safe index: Index) -> Element? {
|
return indices.contains(index) ? self[index] : nil
|
}
|
}
|
|
extension Array where Element == UInt8 {
|
public init(hex: String) {
|
self.init(reserveCapacity: hex.unicodeScalars.lazy.underestimatedCount)
|
var buffer: UInt8?
|
var skip = hex.hasPrefix("0x") ? 2 : 0
|
for char in hex.unicodeScalars.lazy {
|
guard skip == 0 else {
|
skip -= 1
|
continue
|
}
|
guard char.value >= 48 && char.value <= 102 else {
|
removeAll()
|
return
|
}
|
let v: UInt8
|
let c: UInt8 = UInt8(char.value)
|
switch c {
|
case let c where c <= 57:
|
v = c - 48
|
case let c where c >= 65 && c <= 70:
|
v = c - 55
|
case let c where c >= 97:
|
v = c - 87
|
default:
|
removeAll()
|
return
|
}
|
if let b = buffer {
|
append(b << 4 | v)
|
buffer = nil
|
} else {
|
buffer = v
|
}
|
}
|
if let b = buffer {
|
append(b)
|
}
|
}
|
|
public func toHexString() -> String {
|
`lazy`.reduce(into: "") {
|
var s = String($1, radix: 16)
|
if s.count == 1 {
|
s = "0" + s
|
}
|
$0 += s
|
}
|
}
|
}
|
|
extension Array where Element == UInt8 {
|
/// split in chunks with given chunk size
|
@available(*, deprecated)
|
public func chunks(size chunksize: Int) -> Array<Array<Element>> {
|
var words = Array<Array<Element>>()
|
words.reserveCapacity(count / chunksize)
|
for idx in stride(from: chunksize, through: count, by: chunksize) {
|
words.append(Array(self[idx - chunksize ..< idx])) // slow for large table
|
}
|
let remainder = suffix(count % chunksize)
|
if !remainder.isEmpty {
|
words.append(Array(remainder))
|
}
|
return words
|
}
|
|
public func md5() -> [Element] {
|
Digest.md5(self)
|
}
|
|
public func sha1() -> [Element] {
|
Digest.sha1(self)
|
}
|
|
public func sha224() -> [Element] {
|
Digest.sha224(self)
|
}
|
|
public func sha256() -> [Element] {
|
Digest.sha256(self)
|
}
|
|
public func sha384() -> [Element] {
|
Digest.sha384(self)
|
}
|
|
public func sha512() -> [Element] {
|
Digest.sha512(self)
|
}
|
|
public func sha2(_ variant: SHA2.Variant) -> [Element] {
|
Digest.sha2(self, variant: variant)
|
}
|
|
public func sha3(_ variant: SHA3.Variant) -> [Element] {
|
Digest.sha3(self, variant: variant)
|
}
|
|
public func crc32(seed: UInt32? = nil, reflect: Bool = true) -> UInt32 {
|
Checksum.crc32(self, seed: seed, reflect: reflect)
|
}
|
|
public func crc32c(seed: UInt32? = nil, reflect: Bool = true) -> UInt32 {
|
Checksum.crc32c(self, seed: seed, reflect: reflect)
|
}
|
|
public func crc16(seed: UInt16? = nil) -> UInt16 {
|
Checksum.crc16(self, seed: seed)
|
}
|
|
public func encrypt(cipher: Cipher) throws -> [Element] {
|
try cipher.encrypt(self.slice)
|
}
|
|
public func decrypt(cipher: Cipher) throws -> [Element] {
|
try cipher.decrypt(self.slice)
|
}
|
|
public func authenticate<A: Authenticator>(with authenticator: A) throws -> [Element] {
|
try authenticator.authenticate(self)
|
}
|
}
|
