Demystify code signing and its importance in app development. Get help troubleshooting code signing issues and ensure your app is properly signed for distribution.

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Code Signing Resources
General: Forums topic: Code Signing Forums subtopics: Code Signing > General, Code Signing > Certificates, Identifiers & Profiles, Code Signing > Notarization, Code Signing > Entitlements Forums tags: Code Signing, Signing Certificates, Provisioning Profiles, Entitlements Developer Account Help — This document is good in general but, in particular, the Reference section is chock-full of useful information, including the names and purposes of all certificate types issued by Apple Developer web site, tables of which capabilities are supported by which distribution models on iOS and macOS, and information on how to use managed capabilities. Developer > Support > Certificates covers some important policy issues Bundle Resources > Entitlements documentation TN3125 Inside Code Signing: Provisioning Profiles — This includes links to the other technotes in the Inside Code Signing series. WWDC 2021 Session 10204 Distribute apps in Xcode with cloud signing Certificate Signing Requests Explained forums post --deep Considered Harmful forums post Don’t Run App Store Distribution-Signed Code forums post Resolving errSecInternalComponent errors during code signing forums post Finding a Capability’s Distribution Restrictions forums post Signing code with a hardware-based code-signing identity forums post New Capabilities Request Tab in Certificates, Identifiers & Profiles forums post Isolating Code Signing Problems from Build Problems forums post Investigating Third-Party IDE Code-Signing Problems forums post Determining if an entitlement is real forums post Mac code signing: Forums tag: Developer ID Creating distribution-signed code for macOS documentation Packaging Mac software for distribution documentation Placing Content in a Bundle documentation Embedding nonstandard code structures in a bundle documentation Embedding a command-line tool in a sandboxed app documentation Signing a daemon with a restricted entitlement documentation Defining launch environment and library constraints documentation WWDC 2023 Session 10266 Protect your Mac app with environment constraints TN2206 macOS Code Signing In Depth archived technote — This doc has mostly been replaced by the other resources linked to here but it still contains a few unique tidbits and it’s a great historical reference. Manual Code Signing Example forums post The Care and Feeding of Developer ID forums post TestFlight, Provisioning Profiles, and the Mac App Store forums post For problems with notarisation, see Notarisation Resources. For problems with the trusted execution system, including Gatekeeper, see Trusted Execution Resources. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = "eskimo" + "1" + "@" + "apple.com"
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31k
Sep ’25
Unable to load my enterprise application in iOS 18 and above
We have an enterprise application which customers are using since long. Suddenly some customers have reported they are unable to open app in iOS 18 OS. On lower versions like 17 it is working fine. We have a deploy this enterprise application on our server from that link our customer can download and install the app in iPhone. Now they are blocked due to this error. After installing the app when they open app below error message is shown to them. "AppName" is no longer available.
Topic: Code Signing SubTopic: General
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641
Dec ’24
SHA256 Hash - no example code
note technically code-signing but related...... Why has there been no update to the documentation at: https://developer.apple.com/documentation/appstorereceipts/validating_receipts_on_the_device To demonstrate how to validate an SHA256 app store hash ??? The January deadline is looming and I can find no working example code which sucessfully validates an SHA256 hash HELP !!!!
Topic: Code Signing SubTopic: General
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377
Dec ’24
Xcode 16.2 無法在IOS 18.2 Debug
Xcode 16.2 無法在IOS 18.2 Debug Xcode 16.2 iOS 18.2 直接建立新專案 Xcode -> Create New Project -> Multiplatform -> Application -> App 選擇 實體手機 -> 執行 error: attach by pid '1050' failed -- attach failed (Not allowed to attach to process. Look in the console messages (Console.app), near the debugserver entries, when the attach failed. The subsystem that denied the attach permission will likely have logged an informative message about why it was denied.) Logging Error: Failed to initialize logging system due to time out. Log messages may be missing. If this issue persists, try setting IDEPreferLogStreaming=YES in the active scheme actions environment variables.
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886
Dec ’24
Stripping protections to allow lldb debugging
Chrome has started crashing almost immediately after startup. I've reported the issue to the Chrome team here: https://issues.chromium.org/issues/385433270 I'm hoping to debug the issue a bit more myself. This page from the Chrome team https://chromium.googlesource.com/chromium/src/+/master/docs/mac/debugging.md#chrome-builds suggests using the follow to strip off the protections: codesign --force --sign - path/to/Google\ Chrome.app However, applying that seems to have no effect: % codesign --force --sign - /Applications/Google\ Chrome\ copy.app /Applications/Google Chrome copy.app: replacing existing signature /Applications/Google Chrome copy.app: resource fork, Finder information, or similar detritus not allowed % lldb /Applications/Google\ Chrome\ copy.app (lldb) target create "/Applications/Google Chrome copy.app" Current executable set to '/Applications/Google Chrome copy.app' (arm64). (lldb) run error: process exited with status -1 (attach failed (Not allowed to attach to process. Look in the console messages (Console.app), near the debugserver entries, when the attach failed. The subsystem that denied the attach permission will likely have logged an informative message about why it was denied.)) I have tried other variations like the following based on Stack Overflow, this forum, etc., but with the same result. (I'm still a little vague on the meaning for some flags, sorry.) Though codesign says that it's "replacing existing signature", as far as I can tell, nothing is changing: % cat <<EOF > debuggee-entitlement.xml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>com.apple.security.get-task-allow</key> <true/> </dict> </plist> EOF % codesign --verbose=4 -fs - --options library-validation --entitlements debuggee-entitlement.xml /Applications/Google\ Chrome\ copy.app /Applications/Google Chrome copy.app: replacing existing signature /Applications/Google Chrome copy.app: resource fork, Finder information, or similar detritus not allowed file with invalid attached data: Disallowed xattr com.apple.FinderInfo found on /Applications/Google Chrome copy.app lldb still fails the same way. Here's what I see after the above: % codesign -d -vvv /Applications/Google\ Chrome\ copy.app Executable=/Applications/Google Chrome copy.app/Contents/MacOS/Google Chrome Identifier=com.google.Chrome Format=app bundle with Mach-O universal (x86_64 arm64) CodeDirectory v=20500 size=1821 flags=0x12a00(kill,restrict,library-validation,runtime) hashes=46+7 location=embedded Hash type=sha256 size=32 CandidateCDHash sha256=5d7beab2b03d9892426076b24acc19815d7a3ff8 CandidateCDHashFull sha256=5d7beab2b03d9892426076b24acc19815d7a3ff8c1446966e422c3c10672626b Hash choices=sha256 CMSDigest=5d7beab2b03d9892426076b24acc19815d7a3ff8c1446966e422c3c10672626b CMSDigestType=2 CDHash=5d7beab2b03d9892426076b24acc19815d7a3ff8 Signature size=8989 Authority=Developer ID Application: Google LLC (EQHXZ8M8AV) Authority=Developer ID Certification Authority Authority=Apple Root CA Timestamp=Dec 17, 2024 at 2:47:58 PM Notarization Ticket=stapled Info.plist entries=44 TeamIdentifier=EQHXZ8M8AV Runtime Version=15.0.0 Sealed Resources version=2 rules=13 files=63 Internal requirements count=1 size=288 From what I can tell, my codesign runs have changed nothing... I see no diff as compared with what I see running codesign -d on a fresh copy. Is it possible to strip off the protections on my local instance to allow debugging with lldb? If so, could someone share a command for accomplishing that? Although I'm asking about this because of Chrome specifically, I'm hoping to learn more about codesigning in general and to be more empowered as a user to be able to debug when an app I depend on is crashing. Thanks much! Happy Holidays!
Topic: Code Signing SubTopic: General Tags:
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601
Dec ’24
When starting a process on macOS Sequoia, it gets terminated by the kernel.
I have an executable file named infogodesk, located in the directory /usr/local/SmpAgent/rustdesk/infogodesk. When I execute it using the terminal with ./infogodesk, the process gets terminated by the kernel. However, if I move the executable to another directory, it works fine. This issue is very frustrating, and I hope to get some help. Below is the console log output: 默认 11:26:28.162205+0800 kernel ASP: Validation category (6) does not match top-level policy match (3) for process: /usr/local/SmpAgent/rustdesk/infogodesk 默认 11:26:28.162211+0800 kernel Validation category policy: Notifying syspolicyd about /usr/local/SmpAgent/rustdesk/infogodesk with PID 88264 默认 11:26:28.166695+0800 kernel CODE SIGNING: cs_invalid_page(0x104e04000): p=88264[infogodesk] final status 0x23000200, denying page sending SIGKILL 默认 11:26:28.166698+0800 kernel CODE SIGNING: process 88264[infogodesk]: rejecting invalid page at address 0x104e04000 from offset 0x0 in file "/usr/local/SmpAgent/rustdesk/infogodesk" (cs_mtime:1734509326.0 == mtime:1734509326.0) (depth:0) 默认 11:26:28.166738+0800 kernel infogodesk[88264] Corpse allowed 1 of 5 默认 11:26:28.255182+0800 ReportCrash ASI found [ReportCrash] (sensitive) 'Pid 88264 'infogodesk' CORPSE: Extracting Completed 1, Recent: Pid 86766 'ReportCrash' CORPSE' 默认 11:26:28.261619+0800 ReportCrash ASI found [ReportCrash] (sensitive) 'Pid 88264 'infogodesk' CORPSE: Extracting Completed 1, Recent: Pid 86767 'ReportCrash' CORPSE'
Topic: Code Signing SubTopic: General
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510
Dec ’24
App Fails to Launch on Another Mac with Error -10810 After Codesign and Notarization
I exported an app from an Xcode project using the "Archive" feature. After signing and notarizing it, the app runs normally on my local machine. However, after packaging it with create-dmg or ditto and distributing it to another Mac, I get an error saying the application cannot run. When I execute the command open xxx.app in Terminal, it shows _LSOpenURLsWithCompletionHandler() failed for the application /Applications/Maxi PC Suite.app with error -10810. Does anyone know why this is happening? codesign and notarization info: codesign -vvv Maxi\ PC\ Suite.app ...... Maxi PC Suite.app: valid on disk Maxi PC Suite.app: satisfies its Designated Requirement syspolicy_check distribution Maxi\ PC\ Suite.app App passed all pre-distribution checks and is ready for distribution.
Topic: Code Signing SubTopic: General
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499
Dec ’24
can anybody fix this code
from; tkinter; import * from; tkinter; import ttk import random import time import sqlite3 #Connect; to; the; database (create, if it doesnot exist) conn = sqlite3.connect("quiz_database.db") c = conn.cursor() Create the table if it doesnot exist c.execute(""'CREATE TABLE IF NOT EXISTS questions (id INTEGER PRIMARY KEY AUTOINCREMENT, question TEXT, answer1 TEXT, answer2 TEXT, correct_answer INTEGER)""') conn.commit() Sample data (replace with your own questions) sample_questions = [ ("Is the Earth flat?", "True", "False", 2), ("Do birds fly?", "True", "False", 1), ("Is water wet?", "True", "False", 1), ("Can humans breathe underwater?", "True", "False", 2), ] c.executemany("INSERT OR IGNORE INTO questions (question, answer1, answer2, correct_answer) VALUES (?, ?, ?, ?)", sample_questions) conn.commit() class QuizApp: def init(self, master): self.master = master master.title("True/False Quiz") # Initialize variables self.questions = [] self.current_question = 0 self.score = 0 self.start_time = 0 self.time_limit = 60 # Time limit in seconds # Get questions from the database self.load_questions() # Create GUI elements self.question_label = Label(master, text="", font=("Arial", 16)) self.question_label.pack(pady=20) self.true_button = Button(master, text="True", command=lambda: self.check_answer(1), width=15) self.true_button.pack(side=LEFT, padx=10) self.false_button = Button(master, text="False", command=lambda: self.check_answer(2), width=15) self.false_button.pack(side=RIGHT, padx=10) self.feedback_label = Label(master, text="", font=("Arial", 12)) self.feedback_label.pack(pady=10) self.timer_label = Label(master, text="Time Left: 60s", font=("Arial", 12)) self.timer_label.pack() self.progress_bar = ttk.Progressbar(master, orient=HORIZONTAL, length=200, mode="determinate") self.progress_bar.pack(pady=10) self.start_quiz() def load_questions(self): c.execute("SELECT * FROM questions") self.questions = c.fetchall() random.shuffle(self.questions) def start_quiz(self): self.start_time = time.time() self.display_question() self.update_timer() def display_question(self): if self.current_question < len(self.questions): question = self.questions[self.current_question] self.question_label.config(text=question[1]) # Display the question self.progress_bar["maximum"] = len(self.questions) self.progress_bar["value"] = self.current_question + 1 # Update progress bar def check_answer(self, selected_answer): correct_answer = self.questions[self.current_question][4] if selected_answer == correct_answer: self.feedback_label.config(text="Correct!", fg="green") self.score += 1 else: self.feedback_label.config(text="Incorrect!", fg="red") self.current_question += 1 if self.current_question < len(self.questions): self.display_question() else: self.end_quiz() def update_timer(self): elapsed_time = time.time() - self.start_time remaining_time = self.time_limit - elapsed_time if remaining_time > 0: self.timer_label.config(text=f"Time Left: {int(remaining_time)}s") self.master.after(1000, self.update_timer) else: self.end_quiz() def end_quiz(self): self.true_button.config(state=DISABLED) self.false_button.config(state=DISABLED) self.feedback_label.config(text=f"Quiz Over! Your score: {self.score}/{len(self.questions)}") Run the application root = Tk() app = QuizApp(root) root.mainloop() Close the database connection conn.close()
Topic: Code Signing SubTopic: General
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390
Dec ’24
Constantly getting the same error
Hi, I am a newbie to this, I am trying to build my own ios phone app. I am using my own phone as the developers phone so its set to debug. Using Flutter I do flutter run. it get so far and always stops on : Could not build the precompiled application for the device. Error (Xcode): Unknown platform: "ios". /Users/admin/group2/ios/Runner/Assets.xcassets Error launching application on iPhone XS Max. I have tried everything, so I thought someone on here might have the answer. I am happy to share any files or anything that you might need to recreate the issue.
Topic: Code Signing SubTopic: General
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385
Jan ’25
Not Allowed To Open Rust Binary In Terminal
Hi, I am a long time programmer in C#, and newer to Rust, and a rookie to MacOS 15.1. Over the past few days I have made numerous attempts to run a Rust GUI binary that I compiled on Mac. Here are some examples of things I have tried using. Executable compiled in M1 mac not running on Apple Silicon Mac - help - The Rust Programming Language Forum And here.... How to run unsigned apps in macOS 15.1 Also here... "sudo spctl --master-disable" There are many more that I have tried. I also tried moving the binary from my developer folder to the Application folder and running.... xattr -r -d com.apple.quarantine /Applications/csv Note that "csv" is the name of my binary. You have probably seen this 100 times, so can you point me to me to something that allows my Rust binaries to run under MacOS? PS The Rust program code works just fine under Linux. I can either type Cargo Run and run the binary from the Terminal or go directly to the executable and double click on it to open the GUI application. The only thing that MacOS lets me do it open the GUI from the Terminal. Commander One says that I do not have the proper credentials to open the file directly. Finder also does not allow me to open the binary directly. Thanks, Jim
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1.1k
Jan ’25
Provisioning profile problem
Hi, I know my swiftui, but I'm completely new to macOS development. Using Xcode 16.2 I wrote a backup app that fits my needs. I got it to use iCloud Documents in its own container. It runs beautifully on my developing Mac. When I copy it over to my other Mac and try to open it, I just get a message that macOS can't open the app ("Das Programm kann nicht geöffnet werden") In terminal I get this message: "embedded provisioning profile not valid: file:///Users/niko/FlexBackup.app/Contents/embedded.provisionprofile error: Error Domain=CPProfileManager Code=-212 "Provisioning profile does not allow this device." I have "automatically manage signing" turned on and a Xcode Managed Profile. How can I run my app on all of y Macs?
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668
Jan ’25
codesign error - No such file or directory
I'm having a problem with codesign for output from Pyinstaller The files are in ~/PycharmProjects/ALP_Document_Factory_II That folder contains the icon file, the entitlement file, and also contains a "dist" folder where Pyinstaller places the app file (ALP_Document_Factory_II.app) The generated app works and runs when I double click it. When I run codesign: codesign -s xxxxxxxx -f --entitlements entitlements.plist -o runtime dist/ALP_Document_Factory_II.app ("xxxxxxx" is where I place the hash of my credential) I get the following error message: No such file or directory Here is the Terminal copy... minus my Hash dickl45@Dicks-iMac3 ALP_Document_Factory_II % codesign -s xxxxxxxxxx -f --entitlements entitlements.plist -o runtime dist/ALP_Document_Factory_II.app dist/ALP_Document_Factory_II.app: No such file or directory Earlier I was able to use codesign and notarytool, but I must be doing something wrong that I can't see. Yours baffled MacOs 15.2
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558
Jan ’25
dlopen on development iPhone codesign issue
Hi, For the purposes of iteration speed in development builds, on an iPhone in development mode, I am attempting to use hot reloaded dylibs. The goal is that the app is rarely fully restarted and small code changes can be applied quickly, drastically reducing iteration speed. For this purpose I have a socket server on my Mac that sends changed dylibs to my app on my iPhone. This works great on Mac, however on iOS i am running into codesigning problems. I am using the following to codesign the dylib: codesign -f -s XXX --timestamp=none testlibrary-ios.dylib I am placing the downloaded dylib in this folder: const char* cachedirectoryPath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0] UTF8String]; dlopen gives me the following error: dlopen(/var/mobile/Containers/Data/Application/67A3D31B-6F72-4939-9E7F-665FC78CDC61/Library/Caches/testlibrary-ios.dylib, 0x000A): tried: '/usr/lib/system/introspection/testlibrary-ios.dylib' (no such file, not in dyld cache), '/var/mobile/Containers/Data/Application/67A3D31B-6F72-4939-9E7F-665FC78CDC61/Library/Caches/testlibrary-ios.dylib' (code signature invalid in <78A101AD-D756-3526-8754-8B7F4925DE90> '/private/var/mobile/Containers/Data/Application/67A3D31B-6F72-4939-9E7F-665FC78CDC61/Library/Caches/testlibrary-ios.dylib' (errno=1) sliceOffset=0x00000000, codeBlobOffset=0x0000C2E0, codeBlobSize=0x00004990), .... Is loading a dylib like this on iPhones in development mode possible? Any idea what is going wrong with codesigning or installing the dylib? (Obviously this code is never deployed in an app that goes on the AppStore)
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586
Jan ’25
App Startup Issues after Upgrade to MacOS Sequoia
Short description of the issue/suggestion: After upgrading to MacOS Sequoia and being required to code sign and notarize my app, cannot launch app even though code sign and notarization pass Please tell us about your environment: MacBookPro Chip Apple M2 Max 32 GB JavaPackager version: 1.7.6 OS version: macOS Sequoia 15.0.1 JDK version: jdk-1.8 Build tool: Maven Steps to reproduce the issue: -DMG Maven Build of Spring Boot /Java (version 8) application with "fvarrui" JavaPackager plugin using default universalJavaApplicationStub. Code signing and Notarization / Stapling PASS and App installs in Application folder, however cannot launch App. Although code sign and notarization pass, it is interesting that in the build output, prior to it submitting to Apple, there is an error stating that the App code sign could not be replaced. What is the expected behavior? -App launches when double clicking the application icon What have you tried to resolve / workaround the issue? -Install via package rather than DMG - same result -Can launch App by opening up the app Content/MacOS folder and clicking directly on the universalJavaApplicationStub. Note requires that you allow it to run within the Security and Privacy settings. codesign --verify --deep --verbose force1.app force1.app: valid on disk force1.app: satisfies its Designated Requirement spctl -a -vvv force1.app Info.plist.txt pom.xml.txt f Build Output abridged.txt o SysConsoleOutput.txt r ce1.app: accepted source=Notarized Developer ID origin=Developer ID Application: Neal Hartmann (JPFYU53MK9)
Topic: Code Signing SubTopic: General
5
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648
Jan ’25
Code Signing Python Libraries
I am trying to code sign an application which relies on many python libraries to run. For background knowledge, the .app was created with a —onefile command on Visual Studio. I code signed my application itself using codesign --deep --force --verify --timestamp --sign "Developer ID Application: Issey Yohannes (GL5BCCW69X)" /Users/isseyyohannes/Desktop/Automated\ ALGORA.app However, when I try to run the application the error shows in terminal as follows [PYI-16345:ERROR] Failed to load Python shared library '/var/folders/g9/2zbc7y_97xxbq7bnc301nnyc0000gn/T/_MEI6keRcA/Python': dlopen: dlopen(/var/folders/g9/2zbc7y_97xxbq7bnc301nnyc0000gn/T/_MEI6keRcA/Python, 10): no suitable image found. Did find: /var/folders/g9/2zbc7y_97xxbq7bnc301nnyc0000gn/T/_MEI6keRcA/Python: code signature in (/var/folders/g9/2zbc7y_97xxbq7bnc301nnyc0000gn/T/_MEI6keRcA/Python) not valid for use in process using Library Validation: mapped file has no Team ID and is not a platform binary (signed with custom identity or adhoc?) /var/folders/g9/2zbc7y_97xxbq7bnc301nnyc0000gn/T/_MEI6keRcA/Python: stat() failed with errno=1 Through some external tools, I was able to narrow the issue as follows Hardened Runtime Restriction: Your application is attempting to load a shared library (Python) at runtime, but the library is either: Not properly signed with the same Team ID as your app. Not marked as a valid platform binary. macOS requires all loaded libraries to comply with its code-signing and runtime security policies. Any insight is much appreciated.
Topic: Code Signing SubTopic: General
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655
Jan ’25
NSTask launchRequirementData
I've noticed that NSTaks has this property as of macOS 14.4 @property (nullable, copy) NSData *launchRequirementData API_AVAILABLE(macos(14.4)) API_UNAVAILABLE(ios, watchos, tvos, visionos); It has no documentation whatsoever. Even google search has no clue. Does this have anything to do with code signature requirements validation? Any explanations and examples would be appreciated!
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554
Jan ’25