removed C code. Switched to dependency

.gitignore

@@ -39,10 +39,10 @@ playground.xcworkspace
 # Swift Package Manager
 #
 # Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
-# Packages/
-# Package.pins
-# Package.resolved
-# *.xcodeproj
+Packages/
+Package.pins
+Package.resolved
+*.xcodeproj
 #
 # Xcode automatically generates this directory with a .xcworkspacedata file and xcuserdata
 # hence it is not needed unless you have added a package configuration file to your project

Bip39.swift.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'Bip39.swift'
-  s.version          = '0.1.0'
+  s.version          = '0.1.1'
   s.summary          = 'Cross-platform BIP39 mnemonic implementation for Swift.'
 
   s.description      = <<-DESC
@@ -23,6 +23,8 @@ Cross-platform BIP39 mnemonic implementation for Swift. Supports all Apple platf
   s.module_name = 'Bip39'
 
   s.source_files = 'Sources/Bip39/**/*.swift'
+
+  s.dependency 'UncommonCrypto', '~> 0.1.0'
 
   s.test_spec 'Tests' do |test_spec|
     test_spec.platforms = {:ios => '9.0', :osx => '10.10', :tvos => '9.0'}

Package.swift

@@ -10,26 +10,15 @@ var package = Package(
             name: "Bip39",
             targets: ["Bip39"]),
     ],
-    dependencies: [],
+    dependencies: [
+        .package(url: "https://github.com/tesseract-one/UncommonCrypto.swift.git", from: "0.1.0")
+    ],
     targets: [
         .target(
             name: "Bip39",
-            dependencies: []),
+            dependencies: ["UncommonCrypto"]),
         .testTarget(
             name: "Bip39Tests",
             dependencies: ["Bip39"]),
     ]
 )
-
-#if !canImport(CommonCrypto)
-package.targets.append(
-    .target(
-        name: "CBip39Crypto",
-        dependencies: [],
-        cSettings: [
-            .define("SHA2_UNROLL_TRANSFORM")
-        ]
-    )
-)
-package.targets.first(where: { $0.name == "Bip39" })!.dependencies.append("CBip39Crypto")
-#endif

Sources/Bip39/Mnemonic.swift

@@ -6,6 +6,7 @@
 //
 
 import Foundation
+import UncommonCrypto
 
 public struct Mnemonic: Equatable, Hashable {
     public enum Error: Swift.Error {
@@ -43,7 +44,7 @@ public struct Mnemonic: Equatable, Hashable {
     public func seed(password: String = "", wordlist: Wordlist = .english) -> [UInt8] {
         let mnemonic = Array(self.mnemonic(wordlist: wordlist).joined(separator: " ").utf8)
         let salt = Array(("mnemonic" + password).utf8)
-        return try! PBKDF2.sha512(password: mnemonic, salt: salt)
+        return try! PBKDF2.derive(type: .sha512, password: mnemonic, salt: salt)
     }
 
     // Check is mnemonic phrase valid
@@ -123,7 +124,7 @@ public struct Mnemonic: Equatable, Hashable {
         }
 
         let size = entropy.count / 4 // Calculate checksum size.
-        let hash = SHA256.hash(entropy)
+        let hash = SHA2.hash(type: .sha256, bytes: entropy)
         return (hash[0] >> (8 - size), size)
     }
 }