diff --git a/Podfile b/Podfile
index a87bceaf8..5452d4e81 100644
--- a/Podfile
+++ b/Podfile
@@ -11,7 +11,7 @@ target 'Session' do
   pod 'PromiseKit', :inhibit_warnings => true
   pod 'PureLayout', '~> 3.1.8', :inhibit_warnings => true
   pod 'Reachability', :inhibit_warnings => true
-  pod 'Sodium', '~> 0.9.1', :inhibit_warnings => true
+  pod 'Sodium', '~> 0.8.0', :inhibit_warnings => true
   pod 'YapDatabase/SQLCipher', :git => 'https://github.com/loki-project/session-ios-yap-database.git', branch: 'signal-release', :inhibit_warnings => true
   pod 'YYImage', git: 'https://github.com/signalapp/YYImage', :inhibit_warnings => true
   pod 'ZXingObjC', :inhibit_warnings => true
@@ -22,18 +22,15 @@ target 'SessionShareExtension' do
   pod 'CryptoSwift', :inhibit_warnings => true
   pod 'Curve25519Kit', git: 'https://github.com/signalapp/Curve25519Kit.git', :inhibit_warnings => true
   pod 'Mantle', git: 'https://github.com/signalapp/Mantle', branch: 'signal-master', :inhibit_warnings => true
-  pod 'NVActivityIndicatorView', :inhibit_warnings => true
   pod 'PromiseKit', :inhibit_warnings => true
   pod 'PureLayout', '~> 3.1.8', :inhibit_warnings => true
-  pod 'Sodium', '~> 0.9.1', :inhibit_warnings => true
-  pod 'SignalCoreKit', git: 'https://github.com/mpretty-cyro/SignalCoreKit.git', branch: 'session-version', :inhibit_warnings => true
+  pod 'SignalCoreKit', git: 'https://github.com/signalapp/SignalCoreKit.git', :inhibit_warnings => true
   pod 'YapDatabase/SQLCipher', :git => 'https://github.com/loki-project/session-ios-yap-database.git', branch: 'signal-release', :inhibit_warnings => true
 end
 
 target 'SessionNotificationServiceExtension' do
   pod 'Curve25519Kit', git: 'https://github.com/signalapp/Curve25519Kit.git', :inhibit_warnings => true
-  pod 'Sodium', '~> 0.9.1', :inhibit_warnings => true
-  pod 'SignalCoreKit', git: 'https://github.com/mpretty-cyro/SignalCoreKit.git', branch: 'session-version', :inhibit_warnings => true
+  pod 'SignalCoreKit', git: 'https://github.com/signalapp/SignalCoreKit.git', :inhibit_warnings => true
   pod 'YapDatabase/SQLCipher', :git => 'https://github.com/loki-project/session-ios-yap-database.git', branch: 'signal-release', :inhibit_warnings => true
 end
 
@@ -41,15 +38,15 @@ target 'SignalUtilitiesKit' do
   pod 'AFNetworking', inhibit_warnings: true
   pod 'CryptoSwift', :inhibit_warnings => true
   pod 'Curve25519Kit', git: 'https://github.com/signalapp/Curve25519Kit.git', :inhibit_warnings => true
+  pod 'GRKOpenSSLFramework', :inhibit_warnings => true
   pod 'HKDFKit', :inhibit_warnings => true
   pod 'Mantle', git: 'https://github.com/signalapp/Mantle', branch: 'signal-master', :inhibit_warnings => true
   pod 'NVActivityIndicatorView', :inhibit_warnings => true
   pod 'PromiseKit', :inhibit_warnings => true
   pod 'PureLayout', '~> 3.1.8', :inhibit_warnings => true
   pod 'Reachability', :inhibit_warnings => true
-  pod 'Sodium', '~> 0.9.1', :inhibit_warnings => true
   pod 'SAMKeychain', :inhibit_warnings => true
-  pod 'SignalCoreKit', git: 'https://github.com/mpretty-cyro/SignalCoreKit.git', branch: 'session-version', :inhibit_warnings => true
+  pod 'SignalCoreKit', git: 'https://github.com/signalapp/SignalCoreKit.git', :inhibit_warnings => true
   pod 'SwiftProtobuf', '~> 1.5.0', :inhibit_warnings => true
   pod 'YapDatabase/SQLCipher', :git => 'https://github.com/loki-project/session-ios-yap-database.git', branch: 'signal-release', :inhibit_warnings => true
   pod 'YYImage', git: 'https://github.com/signalapp/YYImage', :inhibit_warnings => true
@@ -69,8 +66,8 @@ target 'SessionMessagingKit' do
   pod 'PureLayout', '~> 3.1.8', :inhibit_warnings => true
   pod 'Reachability', :inhibit_warnings => true
   pod 'SAMKeychain', :inhibit_warnings => true
-  pod 'SignalCoreKit', git: 'https://github.com/mpretty-cyro/SignalCoreKit.git', branch: 'session-version', :inhibit_warnings => true
-  pod 'Sodium', '~> 0.9.1', :inhibit_warnings => true
+  pod 'SignalCoreKit', git: 'https://github.com/signalapp/SignalCoreKit.git', :inhibit_warnings => true
+  pod 'Sodium', '~> 0.8.0', :inhibit_warnings => true
   pod 'SwiftProtobuf', '~> 1.5.0', :inhibit_warnings => true
   pod 'YapDatabase/SQLCipher', :git => 'https://github.com/loki-project/session-ios-yap-database.git', branch: 'signal-release', :inhibit_warnings => true
 end
@@ -79,8 +76,8 @@ target 'SessionSnodeKit' do
   pod 'CryptoSwift', :inhibit_warnings => true
   pod 'Curve25519Kit', git: 'https://github.com/signalapp/Curve25519Kit.git', :inhibit_warnings => true
   pod 'PromiseKit', :inhibit_warnings => true
-  pod 'SignalCoreKit', git: 'https://github.com/mpretty-cyro/SignalCoreKit.git', branch: 'session-version', :inhibit_warnings => true
-  pod 'Sodium', '~> 0.9.1', :inhibit_warnings => true
+  pod 'SignalCoreKit', git: 'https://github.com/signalapp/SignalCoreKit.git', :inhibit_warnings => true
+  pod 'Sodium', '~> 0.8.0', :inhibit_warnings => true
   pod 'YapDatabase/SQLCipher', :git => 'https://github.com/loki-project/session-ios-yap-database.git', branch: 'signal-release', :inhibit_warnings => true
 end
 
@@ -92,7 +89,7 @@ target 'SessionUtilitiesKit' do
   pod 'PromiseKit', :inhibit_warnings => true
   pod 'PureLayout', '~> 3.1.8', :inhibit_warnings => true
   pod 'SAMKeychain', :inhibit_warnings => true
-  pod 'SignalCoreKit', git: 'https://github.com/mpretty-cyro/SignalCoreKit.git', branch: 'session-version', :inhibit_warnings => true
+  pod 'SignalCoreKit', git: 'https://github.com/signalapp/SignalCoreKit.git', :inhibit_warnings => true
   pod 'YapDatabase/SQLCipher', :git => 'https://github.com/loki-project/session-ios-yap-database.git', branch: 'signal-release', :inhibit_warnings => true
 end
 
diff --git a/Podfile.lock b/Podfile.lock
index 0e031ba47..804a148c7 100644
--- a/Podfile.lock
+++ b/Podfile.lock
@@ -14,41 +14,41 @@ PODS:
   - AFNetworking/Serialization (4.0.1)
   - AFNetworking/UIKit (4.0.1):
     - AFNetworking/NSURLSession
-  - CocoaLumberjack (3.7.4):
-    - CocoaLumberjack/Core (= 3.7.4)
-  - CocoaLumberjack/Core (3.7.4)
-  - CryptoSwift (1.4.2)
+  - CocoaLumberjack (3.6.2):
+    - CocoaLumberjack/Core (= 3.6.2)
+  - CocoaLumberjack/Core (3.6.2)
+  - CryptoSwift (1.3.2)
   - Curve25519Kit (2.1.0):
     - CocoaLumberjack
     - SignalCoreKit
+  - GRKOpenSSLFramework (1.0.2.20)
   - HKDFKit (0.0.3)
   - Mantle (2.1.0):
     - Mantle/extobjc (= 2.1.0)
   - Mantle/extobjc (2.1.0)
-  - NVActivityIndicatorView (5.1.1):
-    - NVActivityIndicatorView/Base (= 5.1.1)
-  - NVActivityIndicatorView/Base (5.1.1)
-  - OpenSSL-Universal (1.1.1200)
-  - PromiseKit (6.15.3):
-    - PromiseKit/CorePromise (= 6.15.3)
-    - PromiseKit/Foundation (= 6.15.3)
-    - PromiseKit/UIKit (= 6.15.3)
-  - PromiseKit/CorePromise (6.15.3)
-  - PromiseKit/Foundation (6.15.3):
+  - NVActivityIndicatorView (5.0.1):
+    - NVActivityIndicatorView/Base (= 5.0.1)
+  - NVActivityIndicatorView/Base (5.0.1)
+  - PromiseKit (6.13.1):
+    - PromiseKit/CorePromise (= 6.13.1)
+    - PromiseKit/Foundation (= 6.13.1)
+    - PromiseKit/UIKit (= 6.13.1)
+  - PromiseKit/CorePromise (6.13.1)
+  - PromiseKit/Foundation (6.13.1):
     - PromiseKit/CorePromise
-  - PromiseKit/UIKit (6.15.3):
+  - PromiseKit/UIKit (6.13.1):
     - PromiseKit/CorePromise
-  - PureLayout (3.1.9)
+  - PureLayout (3.1.8)
   - Reachability (3.2)
   - SAMKeychain (1.5.3)
   - SignalCoreKit (1.0.0):
     - CocoaLumberjack
-    - OpenSSL-Universal
-  - Sodium (0.9.1)
-  - SQLCipher (4.5.0):
-    - SQLCipher/standard (= 4.5.0)
-  - SQLCipher/common (4.5.0)
-  - SQLCipher/standard (4.5.0):
+    - GRKOpenSSLFramework
+  - Sodium (0.8.0)
+  - SQLCipher (4.4.0):
+    - SQLCipher/standard (= 4.4.0)
+  - SQLCipher/common (4.4.0)
+  - SQLCipher/standard (4.4.0):
     - SQLCipher/common
   - SwiftProtobuf (1.5.0)
   - YapDatabase/SQLCipher (3.1.1):
@@ -124,6 +124,7 @@ DEPENDENCIES:
   - AFNetworking
   - CryptoSwift
   - Curve25519Kit (from `https://github.com/signalapp/Curve25519Kit.git`)
+  - GRKOpenSSLFramework
   - HKDFKit
   - Mantle (from `https://github.com/signalapp/Mantle`, branch `signal-master`)
   - NVActivityIndicatorView
@@ -131,8 +132,8 @@ DEPENDENCIES:
   - PureLayout (~> 3.1.8)
   - Reachability
   - SAMKeychain
-  - SignalCoreKit (from `https://github.com/mpretty-cyro/SignalCoreKit.git`, branch `session-version`)
-  - Sodium (~> 0.9.1)
+  - SignalCoreKit (from `https://github.com/signalapp/SignalCoreKit.git`)
+  - Sodium (~> 0.8.0)
   - SwiftProtobuf (~> 1.5.0)
   - YapDatabase/SQLCipher (from `https://github.com/loki-project/session-ios-yap-database.git`, branch `signal-release`)
   - YYImage (from `https://github.com/signalapp/YYImage`)
@@ -143,9 +144,9 @@ SPEC REPOS:
     - AFNetworking
     - CocoaLumberjack
     - CryptoSwift
+    - GRKOpenSSLFramework
     - HKDFKit
     - NVActivityIndicatorView
-    - OpenSSL-Universal
     - PromiseKit
     - PureLayout
     - Reachability
@@ -162,8 +163,7 @@ EXTERNAL SOURCES:
     :branch: signal-master
     :git: https://github.com/signalapp/Mantle
   SignalCoreKit:
-    :branch: session-version
-    :git: https://github.com/mpretty-cyro/SignalCoreKit.git
+    :git: https://github.com/signalapp/SignalCoreKit.git
   YapDatabase:
     :branch: signal-release
     :git: https://github.com/loki-project/session-ios-yap-database.git
@@ -175,39 +175,39 @@ CHECKOUT OPTIONS:
     :commit: 4fc1c10e98fff2534b5379a9bb587430fdb8e577
     :git: https://github.com/signalapp/Curve25519Kit.git
   Mantle:
-    :commit: e7e46253bb01ce39525d90aa69ed9e85e758bfc4
+    :commit: b72c2d1e6132501db906de2cffa8ded7803c54f4
     :git: https://github.com/signalapp/Mantle
   SignalCoreKit:
-    :commit: b6ff159ca01679d5d9f206ede8475caeb0dc3225
-    :git: https://github.com/mpretty-cyro/SignalCoreKit.git
+    :commit: 21c092e94b307690957b50f2305e5e65d28fa89e
+    :git: https://github.com/signalapp/SignalCoreKit.git
   YapDatabase:
     :commit: 5806f6b6e0b34124ee09283a9eca9ce7e6eaf14e
     :git: https://github.com/loki-project/session-ios-yap-database.git
   YYImage:
-    :commit: 62a4cede20bcf31da73d18163408e46a92f171c6
+    :commit: d91910e6f313a255febbf69795198e74259bd51c
     :git: https://github.com/signalapp/YYImage
 
 SPEC CHECKSUMS:
   AFNetworking: 7864c38297c79aaca1500c33288e429c3451fdce
-  CocoaLumberjack: 543c79c114dadc3b1aba95641d8738b06b05b646
-  CryptoSwift: a532e74ed010f8c95f611d00b8bbae42e9fe7c17
+  CocoaLumberjack: bd155f2dd06c0e0b03f876f7a3ee55693122ec94
+  CryptoSwift: 093499be1a94b0cae36e6c26b70870668cb56060
   Curve25519Kit: e63f9859ede02438ae3defc5e1a87e09d1ec7ee6
+  GRKOpenSSLFramework: dc635b0a9d4cd8af2a9ff80a61e779e21b69dfd8
   HKDFKit: c058305d6f64b84f28c50bd7aa89574625bcb62a
   Mantle: 2fa750afa478cd625a94230fbf1c13462f29395b
-  NVActivityIndicatorView: 1f6c5687f1171810aa27a3296814dc2d7dec3667
-  OpenSSL-Universal: 3b8c0d6268fbd5d3ac44f97338e2fd16a73d9dbf
-  PromiseKit: 3b2b6995e51a954c46dbc550ce3da44fbfb563c5
-  PureLayout: 5fb5e5429519627d60d079ccb1eaa7265ce7cf88
+  NVActivityIndicatorView: 738e843cb8924e9e4fc3e559d0728031624bf860
+  PromiseKit: 28fda91c973cc377875d8c0ea4f973013c05b6db
+  PureLayout: a4afb3d79dd958564ce33d22c89f407280d8e6a8
   Reachability: 33e18b67625424e47b6cde6d202dce689ad7af96
   SAMKeychain: 483e1c9f32984d50ca961e26818a534283b4cd5c
-  SignalCoreKit: 1fbd8732163ef76de16cd1107d1fa3684b607e5d
-  Sodium: 23d11554ecd556196d313cf6130d406dfe7ac6da
-  SQLCipher: 98dc22f27c0b1790d39e710d440f22a466ebdb59
+  SignalCoreKit: 4562b2bbd9830077439ca003f952a798457d4ea5
+  Sodium: 63c0ca312a932e6da481689537d4b35568841bdc
+  SQLCipher: e434ed542b24f38ea7b36468a13f9765e1b5c072
   SwiftProtobuf: 241400280f912735c1e1b9fe675fdd2c6c4d42e2
   YapDatabase: b418a4baa6906e8028748938f9159807fd039af4
-  YYImage: f1ddd15ac032a58b78bbed1e012b50302d318331
+  YYImage: 6db68da66f20d9f169ceb94dfb9947c3867b9665
   ZXingObjC: fdbb269f25dd2032da343e06f10224d62f537bdb
 
-PODFILE CHECKSUM: 62496725424703f6390b7c9862c114cee36b26a1
+PODFILE CHECKSUM: 50e6a35c838ba28d2ee02bc6018fdd297c04e55f
 
-COCOAPODS: 1.11.2
+COCOAPODS: 1.10.1
diff --git a/SessionMessagingKit/Utilities/ProofOfWork.swift b/SessionMessagingKit/Utilities/ProofOfWork.swift
index 4cb500c97..d82640bce 100644
--- a/SessionMessagingKit/Utilities/ProofOfWork.swift
+++ b/SessionMessagingKit/Utilities/ProofOfWork.swift
@@ -29,7 +29,7 @@ enum ProofOfWork {
             value = newValue
         }
         // Encode as base 64
-        let base64EncodedNonce = nonce.bigEndianBytes.toBase64()
+        let base64EncodedNonce = nonce.bigEndianBytes.toBase64()!
         // Return
         return (timestamp, base64EncodedNonce)
     }
diff --git a/SessionSnodeKit/SnodeAPI.swift b/SessionSnodeKit/SnodeAPI.swift
index 954230953..6512ffbfc 100644
--- a/SessionSnodeKit/SnodeAPI.swift
+++ b/SessionSnodeKit/SnodeAPI.swift
@@ -304,9 +304,8 @@ public final class SnodeAPI : NSObject {
         let onsName = onsName.lowercased()
         // Hash the ONS name using BLAKE2b
         let nameAsData = [UInt8](onsName.data(using: String.Encoding.utf8)!)
-        guard let nameHash = sodium.genericHash.hash(message: nameAsData) else { return Promise(error: Error.hashingFailed) }
-        
-        let base64EncodedNameHash = nameHash.toBase64()
+        guard let nameHash = sodium.genericHash.hash(message: nameAsData),
+            let base64EncodedNameHash = nameHash.toBase64() else { return Promise(error: Error.hashingFailed) }
         // Ask 3 different snodes for the Session ID associated with the given name hash
         let parameters: [String:Any] = [
             "endpoint" : "ons_resolve",
@@ -434,7 +433,7 @@ public final class SnodeAPI : NSObject {
             "lastHash" : lastHash,
 //            "timestamp" : timestamp,
 //            "pubkey_ed25519" : ed25519PublicKey,
-//            "signature" : signature.toBase64()
+//            "signature" : signature.toBase64()!
         ]
         return invoke(.getMessages, on: snode, associatedWith: publicKey, parameters: parameters)
     }
@@ -474,7 +473,7 @@ public final class SnodeAPI : NSObject {
                     "pubkey" : userX25519PublicKey,
                     "pubkey_ed25519" : userED25519KeyPair.publicKey.toHexString(),
                     "messages": serverHashes,
-                    "signature": signature.toBase64()
+                    "signature": signature.toBase64()!
                 ]
                 return attempt(maxRetryCount: maxRetryCount, recoveringOn: Threading.workQueue) {
                     invoke(.deleteMessage, on: snode, associatedWith: publicKey, parameters: parameters).map2{ rawResponse -> [String:Bool] in
@@ -521,7 +520,7 @@ public final class SnodeAPI : NSObject {
                             "pubkey" : userX25519PublicKey,
                             "pubkey_ed25519" : userED25519KeyPair.publicKey.toHexString(),
                             "timestamp" : timestamp,
-                            "signature" : signature.toBase64()
+                            "signature" : signature.toBase64()!
                         ]
                         return attempt(maxRetryCount: maxRetryCount, recoveringOn: Threading.workQueue) {
                             invoke(.clearAllData, on: snode, parameters: parameters).map2 { rawResponse -> [String:Bool] in