Ben Bahrenburg benbahrenburg
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| let pdfData = try Data(contentsOf: URL(fileURLWithPath: "Path to pdf")) |
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| if let pdf = unlock(data: pdfData, password: "Hello World") { | |
| print("You now have an unlocked CGPDFDocument") | |
| } | |
| func unlock(data: Data, password: String) -> CGPDFDocument? { | |
| if let pdf = CGPDFDocument(CGDataProvider(data: data as CFData)!) { | |
| guard pdf.isEncrypted == true else { return pdf } | |
| guard pdf.unlockWithPassword("") == false else { return pdf } | |
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| // | |
| // PDF.swift | |
| // | |
| // Created by Ben Bahrenburg on 1/1/17. | |
| // Copyright © 2017 bencoding.. All rights reserved. | |
| // | |
| import UIKit | |
| open class PDFHelpers { |
benbahrenburg
/ deviceOwnerAuthentication.swift
Created
January 1, 2017 03:52
Use LAContext to check if the device has a passcode
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| public func devicePasscodeEnabled() -> Bool { | |
| return LAContext().canEvaluatePolicy(.deviceOwnerAuthentication, error: nil) | |
| } |
benbahrenburg
/ Passcode+Keychain.swift
Last active
January 1, 2017 04:09
Use the Keychain to determine if the device has a passcode set.
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| @available(iOS 8.0, *) | |
| public func devicePasscodeEnabledUsingKeychain() -> Bool { | |
| let query: [String:Any] = [ | |
| kSecClass as String : kSecClassGenericPassword, | |
| kSecAttrAccount as String : UUID().uuidString, | |
| kSecAttrAccessible as String: kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly, | |
| kSecValueData as String: "HelloWorld".data(using: String.Encoding.utf8)!, | |
| kSecReturnAttributes as String : kCFBooleanTrue | |
| ] | |
benbahrenburg
/ PasscodeUtils.swift
Last active
July 8, 2020 13:00
Use Swift to determine if device has passcode set
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| // | |
| // PasscodeUtils.swift | |
| // | |
| // Created by Ben Bahrenburg on 12/31/16. | |
| // Copyright © 2016 bencoding.com. All rights reserved. | |
| // | |
| import Foundation | |
| import LocalAuthentication |
benbahrenburg
/ entitlement.xml
Created
December 30, 2016 22:53
Example Entitlement for Keychain Sharing
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| <key>keychain-access-groups</key> | |
| <array> | |
| <string>$(AppIdentifierPrefix)com.bencoding.awesome-group</string> | |
| </array> |
benbahrenburg
/ example.swift
Last active
December 30, 2016 22:46
Example using KeychainAccess (https://github.com/kishikawakatsumi/KeychainAccess) with KeyChainAccessGroupHelper.swift (https://gist.github.com/benbahrenburg/9067f29adbfd1d54aae5b80e8043e282)
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| let info = KeyChainAccessGroupHelper.getAccessGroupInfo() | |
| //Use the default Keychain group | |
| let keychain = Keychain(service: "com.example.github-token", accessGroup: info.rawValue) | |
| //Use the prefix to connect to another keychain group | |
| let keychain = Keychain(service: "com.example.github-token", accessGroup: String(format: "%@.com.bencoding.awesome-group", info.prefix)) |
benbahrenburg
/ KeyChainAccessGroupHelper.swift
Last active
July 5, 2021 21:18
KeyChainAccessGroupHelper - Making it easier to deal with Keychain Access Groups
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| // | |
| // KeyStorage - Simplifying securely saving key information | |
| // | |
| // KeyChainAccessGroupHelper.swift | |
| // Created by Ben Bahrenburg on 12/30/16. | |
| // Copyright © 2017 bencoding.com. All rights reserved. | |
| // | |
| import Foundation | |
| import Security |
benbahrenburg
/ Obfuscator.swift
Created
September 19, 2016 00:38
— forked from MathieuWhite/Obfuscator.swift
Obfuscator for Swift
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| // | |
| // Obfuscator.swift | |
| // SwiftObfuscatorExample | |
| // | |
| // Created by Mathieu White on 2016-07-03. | |
| // Copyright © 2016 Mathieu White. All rights reserved. | |
| // | |
| import Foundation |