remove SecRandom

Author: marius-se

Sources/WebAuthn/Helpers/UInt8+random.swift

@@ -0,0 +1,27 @@
+extension FixedWidthInteger {
+    public static func random() -> Self {
+        return Self.random(in: .min ... .max)
+    }
+
+    public static func random<T>(using generator: inout T) -> Self
+        where T : RandomNumberGenerator
+    {
+        return Self.random(in: .min ... .max, using: &generator)
+    }
+}
+
+extension Array where Element: FixedWidthInteger {
+    public static func random(count: Int) -> [Element] {
+        var array: [Element] = .init(repeating: 0, count: count)
+        (0..<count).forEach { array[$0] = Element.random() }
+        return array
+    }
+
+    public static func random<T>(count: Int, using generator: inout T) -> [Element]
+        where T: RandomNumberGenerator
+    {
+        var array: [Element] = .init(repeating: 0, count: count)
+        (0..<count).forEach { array[$0] = Element.random(using: &generator) }
+        return array
+    }
+}

Sources/WebAuthn/WebAuthnManager.swift

@@ -242,9 +242,6 @@ extension WebAuthnManager {
     /// - Throws: An error if something went wrong while generating random byte
     /// - Returns: 32 bytes
     public func generateChallengeString() throws -> [UInt8] {
-        var bytes = [UInt8](repeating: 0, count: 32)
-        let status = SecRandomCopyBytes(kSecRandomDefault, bytes.count, &bytes)
-        guard status == errSecSuccess else { throw WebAuthnManagerError.challengeGenerationFailed }
-        return bytes
+        [UInt8].random(count: 32)
     }
 }