Break bitwise operations because Swift4 can't resolve in reasonable time. ¯\_(ツ)_/¯

Sources/CryptoSwift/AES.swift

@@ -150,14 +150,29 @@ fileprivate extension AES {
         let rounds = self.variant.Nr
         let rk = self.expandedKey
 
-        var b0 = UInt32(block[block.startIndex + 0 + (0 << 2)]) << 0 | UInt32(block[block.startIndex + 1 + (0 << 2)]) << 8 | UInt32(block[block.startIndex + 2 + (0 << 2)]) << 16
-            b0 = b0 | UInt32(block[block.startIndex + 3 + (0 << 2)]) << 24
-        var b1 = UInt32(block[block.startIndex + 0 + (1 << 2)]) << 0 | UInt32(block[block.startIndex + 1 + (1 << 2)]) << 8 | UInt32(block[block.startIndex + 2 + (1 << 2)]) << 16
-            b1 = b1 | UInt32(block[block.startIndex + 3 + (1 << 2)]) << 24
-        var b2 = UInt32(block[block.startIndex + 0 + (2 << 2)]) << 0 | UInt32(block[block.startIndex + 1 + (2 << 2)]) << 8 | UInt32(block[block.startIndex + 2 + (2 << 2)]) << 16
-            b2 = b2 | UInt32(block[block.startIndex + 3 + (2 << 2)]) << 24
-        var b3 = UInt32(block[block.startIndex + 0 + (3 << 2)]) << 0 | UInt32(block[block.startIndex + 1 + (3 << 2)]) << 8 | UInt32(block[block.startIndex + 2 + (3 << 2)]) << 16
-            b3 = b3 | UInt32(block[block.startIndex + 3 + (3 << 2)]) << 24
+        let b00 = UInt32(block[block.startIndex + 0 + (0 << 2)]) << 0
+        let b01 = UInt32(block[block.startIndex + 1 + (0 << 2)]) << 8
+        let b02 = UInt32(block[block.startIndex + 2 + (0 << 2)]) << 16
+        let b03 = UInt32(block[block.startIndex + 3 + (0 << 2)]) << 24
+        var b0 = b00 | b01 | b02 | b03
+
+        let b10 = UInt32(block[block.startIndex + 0 + (1 << 2)]) << 0
+        let b11 = UInt32(block[block.startIndex + 1 + (1 << 2)]) << 8
+        let b12 = UInt32(block[block.startIndex + 2 + (1 << 2)]) << 16
+        let b13 = UInt32(block[block.startIndex + 3 + (1 << 2)]) << 24
+        var b1 = b10 | b11 | b12 | b13
+
+        let b20 = UInt32(block[block.startIndex + 0 + (2 << 2)]) << 0
+        let b21 = UInt32(block[block.startIndex + 1 + (2 << 2)]) << 8
+        let b22 = UInt32(block[block.startIndex + 2 + (2 << 2)]) << 16
+        let b23 = UInt32(block[block.startIndex + 3 + (2 << 2)]) << 24
+        var b2 = b20 | b21 | b22 | b23
+
+        let b30 = UInt32(block[block.startIndex + 0 + (3 << 2)]) << 0
+        let b31 = UInt32(block[block.startIndex + 1 + (3 << 2)]) << 8
+        let b32 = UInt32(block[block.startIndex + 2 + (3 << 2)]) << 16
+        let b33 = UInt32(block[block.startIndex + 3 + (3 << 2)]) << 24
+        var b3 = b30 | b31 | b32 | b33
 
         var t = Array<UInt32>(repeating: 0, count: 4)
 

Sources/CryptoSwift/Blowfish.swift

@@ -465,7 +465,11 @@ public final class Blowfish {
     }
 
     private func F(x: UInt32) -> UInt32 {
-        return ((self.S[0][Int(x >> 24) & 0xFF] &+ self.S[1][Int(x >> 16) & 0xFF]) ^ self.S[2][Int(x >> 8) & 0xFF]) &+ self.S[3][Int(x & 0xFF)]
+        let f1 = self.S[0][Int(x >> 24) & 0xFF];
+        let f2 = self.S[1][Int(x >> 16) & 0xFF];
+        let f3 = self.S[2][Int(x >> 8) & 0xFF];
+        let f4 = self.S[3][Int(x & 0xFF)]
+        return ((f1 &+ f2) ^ f3) &+ f4
     }
 }