Merge branch 'develop' into swift4

.swift-version

@@ -1 +1 @@
-4.0
+4.0

CODE_OF_CONDUCT.md

@@ -0,0 +1,46 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at marcin@krzyzanowskim.com. The project team will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at [http://contributor-covenant.org/version/1/4][version]
+
+[homepage]: http://contributor-covenant.org
+[version]: http://contributor-covenant.org/version/1/4/

CryptoSwift.xcodeproj/project.pbxproj

@@ -710,7 +710,6 @@
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = CryptoSwift;
 				SUPPORTED_PLATFORMS = "iphonesimulator iphoneos macosx appletvos watchos appletvsimulator watchsimulator";
-				SWIFT_INSTALL_OBJC_HEADER = NO;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4";
@@ -766,7 +765,6 @@
 				METAL_ENABLE_DEBUG_INFO = NO;
 				PRODUCT_NAME = CryptoSwift;
 				SUPPORTED_PLATFORMS = "iphonesimulator iphoneos macosx appletvos watchos appletvsimulator watchsimulator";
-				SWIFT_INSTALL_OBJC_HEADER = NO;
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4";
 				TVOS_DEPLOYMENT_TARGET = 9.0;

LICENSE

@@ -1,4 +1,4 @@
-Copyright (C) 2014 Marcin Krzyżanowski <marcin.krzyzanowski@gmail.com>
+Copyright (C) 2014-2017 Marcin Krzyżanowski <marcin.krzyzanowski@gmail.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. 
@@ -7,4 +7,4 @@ Permission is granted to anyone to use this software for any purpose,including c
 
 - 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.
+- This notice may not be removed or altered from any source or binary distribution.

README.md

@@ -1,12 +1,20 @@
+[![Platform](https://img.shields.io/badge/Platforms-ios%20%7C%20macos%20%7C%20watchos%20%7C%20tvos%20%7C%20linux-4E4E4E.svg?colorA=EF5138)](http://cocoadocs.org/docsets/CryptoSwift)
+[![Swift support](https://img.shields.io/badge/Swift-3.1%20%7C%203.2%20%7C%204.0-lightgrey.svg?colorA=EF5138&colorB=4E4E4E)](#swift-versions-support)
+[![CocoaPods Compatible](https://img.shields.io/cocoapods/v/CryptoSwift.svg?style=flat&label=CocoaPods)](https://cocoapods.org/pods/CryptoSwift)
+[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-brightgreen.svg?style=flat&colorB=64A5DE)](https://github.com/apple/swift-package-manager)
+[![Swift Package Manager compatible](https://img.shields.io/badge/SPM-compatible-brightgreen.svg?style=flat&colorB=64A5DE)](https://github.com/apple/swift-package-manager)
+[![Twitter](https://img.shields.io/badge/twitter-@krzyzanowskim-blue.svg?style=flat&colorB=64A5DE&label=Twitter)](http://twitter.com/krzyzanowskim)
+
 # CryptoSwift
 
-Crypto related functions and helpers for [Swift](https://developer.apple.com/swift/) implemented in Swift. ([#PureSwift](https://twitter.com/hashtag/pureswift))
+Crypto related functions and helpers for [Swift](https://swift.org) implemented in Swift. ([#PureSwift](https://twitter.com/hashtag/pureswift)) 
 
 # Table of Contents
 - [Requirements](#requirements)
 - [Features](#features)
 - [Contribution](#contribution)
 - [Installation](#installation)
+- [Swift versions](#swift-versions-support)
 - [Usage](#usage)
 - [Author](#author)
 - [License](#license)
@@ -96,11 +104,14 @@ Sometimes "embedded framework" option is not available. In that case, you have t
 In the project, you'll find [single scheme](http://promisekit.org/news/2016/08/Multiplatform-Single-Scheme-Xcode-Projects/) for all platforms:
 - CryptoSwift
 
-#### Older Swift versions
+#### Swift versions support
 
 - Swift 1.2: branch [swift12](https://github.com/krzyzanowskim/CryptoSwift/tree/swift12) version <= 0.0.13
 - Swift 2.1: branch [swift21](https://github.com/krzyzanowskim/CryptoSwift/tree/swift21) version <= 0.2.3
 - Swift 2.2, 2.3: branch [swift2](https://github.com/krzyzanowskim/CryptoSwift/tree/swift2) version <= 0.5.2
+- Swift 3.1, branch [master](https://github.com/krzyzanowskim/CryptoSwift/tree/master)
+- Swift 3.2, branch [develop](https://github.com/krzyzanowskim/CryptoSwift/tree/develop)
+- Swift 4.0, branch [swift4](https://github.com/krzyzanowskim/CryptoSwift/tree/swift4)
 
 #### CocoaPods
 
@@ -146,7 +157,7 @@ See: [Package.swift - manual](http://blog.krzyzanowskim.com/2016/08/09/package-s
 
 * [Basics (data types, conversion, ...)](#basics)
 * [Digest (MD5, SHA...)](#calculate-digest)
-* [Message authenticators (HMAC...)](#message-authenticators)
+* [Message authenticators (HMAC...)](#message-authenticators-1)
 * [Password-Based Key Derivation Function (PBKDF2, ...)](#password-based-key-derivation-functions)
 * [Data Padding](#data-padding)
 * [ChaCha20](#chacha20)
@@ -378,7 +389,7 @@ You can follow me on Twitter at [@krzyzanowskim](http://twitter.com/krzyzanowski
 
 ## License
 
-Copyright (C) 2014-2016 Marcin Krzyżanowski <marcin@krzyzanowskim.com>
+Copyright (C) 2014-2017 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. 

Sources/CryptoSwift/Array+Extension.swift

@@ -24,7 +24,7 @@ extension Array {
 extension Array {
 
     /** split in chunks with given chunk size */
-    func chunks(size chunksize: Int) -> Array<Array<Element>> {
+    public func chunks(size chunksize: Int) -> Array<Array<Element>> {
         var words = Array<Array<Element>>()
         words.reserveCapacity(self.count / chunksize)
         for idx in stride(from: chunksize, through: self.count, by: chunksize) {

Sources/CryptoSwift/Bit.swift

@@ -14,7 +14,7 @@
 //  - This notice may not be removed or altered from any source or binary distribution.
 //
 
-enum Bit: Int {
+public enum Bit: Int {
     case zero
     case one
 }

Sources/CryptoSwift/MD5.swift

@@ -101,6 +101,7 @@ public final class MD5: DigestType {
 
             // break chunk into sixteen 32-bit words M[j], 0 ≤ j ≤ 15 and get M[g] value
             let gAdvanced = g << 2
+
             var Mg  = UInt32(chunk[chunk.startIndex &+ gAdvanced])
                 Mg |= UInt32(chunk[chunk.startIndex &+ gAdvanced &+ 1]) << 8
                 Mg |= UInt32(chunk[chunk.startIndex &+ gAdvanced &+ 2]) << 16

Sources/CryptoSwift/UInt8+Extension.swift

@@ -51,7 +51,7 @@ extension UInt8 {
     }
 
     /** array of bits */
-    func bits() -> [Bit] {
+    public func bits() -> [Bit] {
         let totalBitsCount = MemoryLayout<UInt8>.size * 8
 
         var bitsArray = [Bit](repeating: Bit.zero, count: totalBitsCount)
@@ -67,7 +67,7 @@ extension UInt8 {
         return bitsArray
     }
 
-    func bits() -> String {
+    public func bits() -> String {
         var s = String()
         let arr: [Bit] = self.bits()
         for idx in arr.indices {