Fix pod lib lint warnings

* Remove constant (unused since 64410ab6b3).
* Remove description
* Set Swift version to 5.0
* Don’t allow warnings during `pod lib lint`

SignalCoreKit.podspec

@@ -10,11 +10,6 @@ Pod::Spec.new do |s|
   s.name             = "SignalCoreKit"
   s.version          = "1.0.0"
   s.summary          = "A Swift & Objective-C library used by other Signal libraries."
-
-  s.description      = <<-DESC
-A Swift & Objective-C library used by other Signal libraries.
-  DESC
-
   s.homepage         = "https://github.com/signalapp/SignalCoreKit"
   s.license          = 'GPLv3'
   s.author           = { "iOS Team" => "ios@signal.org" }
@@ -24,6 +19,8 @@ A Swift & Objective-C library used by other Signal libraries.
   s.platform     = :ios, '10.0'
   s.requires_arc = true
 
+  s.swift_version = '5.0'
+
   s.source_files  = 'SignalCoreKit/src/**/*.{h,m,mm,swift}', 'SignalCoreKit/Private/**/*.{h,m,mm,swift}'
 
   s.public_header_files = 'SignalCoreKit/src/**/*.h'

SignalCoreKit/src/Cryptography.m

@@ -23,9 +23,6 @@ const NSUInteger kAES256CTR_IVLength = 16;
 // length of authentication tag for AES256-GCM
 static const NSUInteger kAESGCM256_TagLength = 16;
 
-// length of key used for websocket envelope authentication
-static const NSUInteger kHMAC256_EnvelopeKeyLength = 20;
-
 const NSUInteger kAES256_KeyByteLength = 32;
 
 @implementation OWSAES256Key

bin/build_and_test.sh

@@ -4,4 +4,4 @@ set -u
 set -o pipefail
 
 XCODE_XCCONFIG_FILE=SignalCoreKit/CI.xcconfig \
-  pod lib lint --verbose --allow-warnings
+  pod lib lint --verbose