start removing libsodium that was used for one function

Author: Alex Vlasov

Podfile

@@ -1,14 +1,15 @@
 def import_pods
+#  pod 'scrypt', '~> 1.3'
   pod "PromiseKit", "~> 6.3"
   pod 'BigInt', '~> 3.1'
-  pod 'CryptoSwift', '~> 0.10'
+  pod 'CryptoSwift', '~> 0.11'
   pod 'Result', '~> 3.0'
   pod 'libsodium', :modular_headers => true
   pod 'secp256k1_ios', :git => 'https://github.com/shamatar/secp256k1_ios.git', :modular_headers => true
 end
 
 target 'web3swift-macOS' do
-  platform :osx, '10.13'
+  platform :osx, '10.11'
 #  use_frameworks!
   use_modular_headers!
   import_pods

Podfile.lock

@@ -1,7 +1,7 @@
 PODS:
   - BigInt (3.1.0):
     - SipHash (~> 1.2)
-  - CryptoSwift (0.10.0)
+  - CryptoSwift (0.11.0)
   - libsodium (1.0.12)
   - PromiseKit (6.3.4):
     - PromiseKit/CorePromise (= 6.3.4)
@@ -18,7 +18,7 @@ PODS:
 
 DEPENDENCIES:
   - BigInt (~> 3.1)
-  - CryptoSwift (~> 0.10)
+  - CryptoSwift (~> 0.11)
   - libsodium
   - PromiseKit (~> 6.3)
   - Result (~> 3.0)
@@ -44,13 +44,13 @@ CHECKOUT OPTIONS:
 
 SPEC CHECKSUMS:
   BigInt: 76b5dfdfa3e2e478d4ffdf161aeede5502e2742f
-  CryptoSwift: 6c778d69282bed3b4e975ff97a79d074f20bb011
+  CryptoSwift: ad5208dd2aae0a764ea4ce2c2d34bd067cae67f0
   libsodium: 9a8faa5ef2fa0d2d57bd7f7d79bf8fb7c1a9f0ea
   PromiseKit: e1425568123ec844a944c93f2bcb29d511d39cf5
   Result: d2d07204ce72856f1fd9130bbe42c35a7b0fea10
   secp256k1_ios: ac9ef04e761f43c58012b28548afa91493761f17
   SipHash: fad90a4683e420c52ef28063063dbbce248ea6d4
 
-PODFILE CHECKSUM: 7bf3f0b4c63191f570350a917c9cf1da16215395
+PODFILE CHECKSUM: 60655198d2d5ed19e84e1ba8973ebc3091016c26
 
 COCOAPODS: 1.5.3