Merge pull request #255 from tangem/IOS-3059_seed

IOS-3059 Seed generation

TangemSdk.podspec

@@ -53,6 +53,7 @@ Tangem is a Swiss-based secure hardware wallet manufacturer that enables blockch
   s.weak_frameworks = 'CoreNFC', 'CryptoKit', 'Combine', 'SwiftUI'
 
   s.resource_bundles = { 'TangemSdk' => ['TangemSdk/TangemSdk/**/*.lproj/*.strings', 
-					'TangemSdk/TangemSdk/Haptics/*.ahap']}
+					'TangemSdk/TangemSdk/Haptics/*.ahap',
+					'TangemSdk/TangemSdk/**/Wordlists/*.txt']}
 
 end

TangemSdk/TangemSdk/Common/Extensions/Byte+.swift

@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import CryptoKit
 
 public typealias Byte = UInt8
 
@@ -18,6 +19,23 @@ extension UInt8 {
     public var hexString: String {
         return String(format: "%02X", self)
     }
+
+    func toBits() -> [String] {
+        let totalBitsCount = 8
+
+        var bits = [String](repeating: "0", count: totalBitsCount)
+
+        for index in 0..<totalBitsCount {
+            let mask: UInt8 = 1 << UInt8(totalBitsCount - 1 - index)
+            let currentBit = self & mask
+
+            if currentBit != 0 {
+                bits[index] = "1"
+            }
+        }
+
+        return bits
+    }
 }
 
 extension UInt16 {
@@ -29,3 +47,20 @@ extension UInt16 {
         return String(format: "%02X", self)
     }
 }
+
+@available(iOS 13.0, *)
+extension Array where Element == UInt8 {
+    public func getSha256() -> Data {
+        let digest = SHA256.hash(data: self)
+        return Data(digest)
+    }
+
+    public func getSha512() -> Data {
+        let digest = SHA512.hash(data: self)
+        return Data(digest)
+    }
+
+    public func getDoubleSha256() -> Data {
+        return getSha256().getSha256()
+    }
+}

TangemSdk/TangemSdk/Common/Extensions/Data+.swift

@@ -23,7 +23,7 @@ extension Data {
         return hexString
     }
 
-    public func toInt() -> Int {
+    public func toInt() -> Int? {
         return Int(hexData: self)
     }
 
@@ -38,6 +38,20 @@ extension Data {
         let calendar = Calendar.current
         return calendar.date(from: components)
     }
+
+    @available(iOS 13.0, *)
+    public var sha256Ripemd160: Data {
+        var md = RIPEMD160()
+        let hash = getSha256()
+        md.update(data: hash)
+        return md.finalize()
+    }
+
+    public var ripemd160: Data {
+        var md = RIPEMD160()
+        md.update(data: self)
+        return md.finalize()
+    }
 
     public init(hexString: String) {
         self = Data()
@@ -82,7 +96,30 @@ extension Data {
     public init(_ byte: Byte) {
         self = Data([byte])
     }
-
+
+    init?(bitsString: String) {
+        let byteLength = 8
+
+        guard bitsString.count % byteLength == 0 else {
+            return nil
+        }
+
+        let binaryBytes = Array(bitsString).chunked(into: byteLength)
+
+        var bytes = [UInt8]()
+        bytes.reserveCapacity(bitsString.count / byteLength)
+
+        for binaryByte in binaryBytes {
+            guard let byte = UInt8(String(binaryByte), radix: 2) else {
+                return nil
+            }
+
+            bytes.append(byte)
+        }
+
+        self = Data(bytes)
+    }
+
     @available(iOS 13.0, *)
     public func getSha256() -> Data {
         let digest = SHA256.hash(data: self)
@@ -94,10 +131,19 @@ extension Data {
         let digest = SHA512.hash(data: self)
         return Data(digest)
     }
+
+    @available(iOS 13.0, *)
+    public func getDoubleSha256() -> Data {
+        return getSha256().getSha256()
+    }
 
     public var toBytes: [Byte] {
         return Array(self)
     }
+
+    func toBits() -> [String] {
+        return flatMap { $0.toBits() }
+    }
 
     @available(iOS 13.0, *)
     func decodeTlv<T>(tag: TlvTag) -> T? {
@@ -145,8 +191,13 @@ extension Data {
     }
 
     @available(iOS 13.0, *)
-    public func pbkdf2sha256(salt: Data, rounds: Int) throws -> Data {
-        return try pbkdf2(hash: CCPBKDFAlgorithm(kCCPRFHmacAlgSHA256), salt: salt, keyByteCount: 32, rounds: rounds)
+    public func pbkdf2sha256(salt: Data, rounds: Int, keyByteCount: Int = 32) throws -> Data {
+        return try pbkdf2(hash: CCPBKDFAlgorithm(kCCPRFHmacAlgSHA256), salt: salt, keyByteCount: keyByteCount, rounds: rounds)
+    }
+
+    @available(iOS 13.0, *)
+    public func pbkdf2sha512(salt: Data, rounds: Int, keyByteCount: Int = 64) throws -> Data {
+        return try pbkdf2(hash: CCPBKDFAlgorithm(kCCPRFHmacAlgSHA512), salt: salt, keyByteCount: keyByteCount, rounds: rounds)
     }
 
     //SO14443A

TangemSdk/TangemSdk/Common/Extensions/HexConvertible.swift

@@ -0,0 +1,27 @@
+//
+//  HexConvertible.swift
+//  TangemSdk
+//
+//  Created by Alexander Osokin on 09.03.2023.
+//  Copyright © 2023 Tangem AG. All rights reserved.
+//
+
+import Foundation
+
+// Convert hex data to Integer
+public protocol HexConvertible {
+    init?(hexData: Data)
+}
+
+public extension HexConvertible where Self: FixedWidthInteger {
+    init?(hexData: Data) {
+        guard let intValue = Self(hexData.hexString, radix: 16) else {
+            return nil
+        }
+
+        self = intValue
+    }
+}
+
+extension Int: HexConvertible {}
+extension UInt64: HexConvertible {}

TangemSdk/TangemSdk/Common/Extensions/Int+.swift

@@ -9,15 +9,6 @@
 import Foundation
 
 extension Int {
-    /// Convert hex data  to Integer
-    /// - Parameter hexData: length bytes
-    public init(hexData: Data) {
-        let value = hexData.reduce(0) { v, byte in
-            return v << 8 | Int(byte)
-        }
-        self = value
-    }
-
     /// Convert int to byte, truncatingIfNeeded
     public var byte: Data {
         return Data([Byte(truncatingIfNeeded: self)])

TangemSdk/TangemSdk/Common/Extensions/String+.swift

@@ -58,18 +58,12 @@ public extension String {
     internal func trim() -> String {
         return trimmingCharacters(in: .whitespacesAndNewlines)
     }
-
-    internal func camelCaseToSnakeCase() -> String {
-        let acronymPattern = "([A-Z]+)([A-Z][a-z]|[0-9])"
-        let normalPattern = "([a-z0-9])([A-Z])"
-        return self.processCamelCaseRegex(pattern: acronymPattern)?
-            .processCamelCaseRegex(pattern: normalPattern)?.lowercased() ?? self.lowercased()
-    }
-
-    private func processCamelCaseRegex(pattern: String) -> String? {
-        let regex = try? NSRegularExpression(pattern: pattern, options: [])
-        let range = NSRange(location: 0, length: count)
-        return regex?.stringByReplacingMatches(in: self, options: [], range: range, withTemplate: "$1_$2")
+
+    internal func leadingZeroPadding(toLength newLength: Int) -> String {
+        guard count < newLength else { return self }
+
+        let prefix = String(repeating: "0", count: newLength - count)
+        return prefix + self
     }
 }
 

TangemSdk/TangemSdk/Common/TLV/TlvDecoder.swift

@@ -136,30 +136,38 @@ public final class TlvDecoder {
         case .settingsMask:
             do {
                 try typeCheck(CardSettingsMask.self, T.self, for: tag)
-                let intValue = tagValue.toInt()
+                guard let intValue = tagValue.toInt() else {
+                    throw TangemSdkError.decodingFailed("Decoding error. Failed convert \(tag) to SettingsMask")
+                }
+
                 let settingsMask = CardSettingsMask(rawValue: intValue)
                 return settingsMask as! T
             } catch TangemSdkError.decodingFailedTypeMismatch {
                 try typeCheck(WalletSettingsMask.self, T.self, for: tag)
-                let intValue = tagValue.toInt()
+                guard let intValue = tagValue.toInt() else {
+                    throw TangemSdkError.decodingFailed("Decoding error. Failed convert \(tag) to WalletSettingsMask")
+                }
+
                 let settingsMask = WalletSettingsMask(rawValue: intValue)
                 return settingsMask as! T
             }
         case .status:
             do {
                 try typeCheck(Card.Status.self, T.self, for: tag)
-                let intValue = tagValue.toInt()
-                guard let cardStatus = Card.Status(rawValue: intValue) else {
+                guard let intValue = tagValue.toInt(),
+                      let cardStatus = Card.Status(rawValue: intValue) else {
                     throw TangemSdkError.decodingFailed("Decoding error. Failed convert \(tag) to int and CardStatus")
                 }
-                
+
                 return cardStatus as! T
             } catch TangemSdkError.decodingFailedTypeMismatch {
                 try typeCheck(Card.Wallet.Status.self, T.self, for: tag)
-                let intValue = tagValue.toInt()
-                guard let walletStatus = Card.Wallet.Status(rawValue: intValue) else {
+
+                guard let intValue = tagValue.toInt(),
+                      let walletStatus = Card.Wallet.Status(rawValue: intValue) else {
                     throw TangemSdkError.decodingFailed("Decoding error. Failed convert \(tag) to int and WalletStatus")
                 }
+
                 return walletStatus as! T
             }
         case .signingMethod:
@@ -195,10 +203,11 @@ public final class TlvDecoder {
             try typeCheck(DerivationPath.self, T.self, for: tag)
             return try DerivationPath(from: tagValue) as! T
         case .backupStatus:
-            let intValue = tagValue.toInt()
+
             try typeCheck(Card.BackupRawStatus.self, T.self, for: tag)
-            guard let status = Card.BackupRawStatus.make(from: intValue) else {
-                throw TangemSdkError.decodingFailed("Decoding error. Unknown iBackupStatus")
+            guard let intValue = tagValue.toInt(),
+                  let status = Card.BackupRawStatus.make(from: intValue) else {
+                throw TangemSdkError.decodingFailed("Decoding error. Unknown BackupRawStatus")
             }
             return status as! T
         }