Facebook Android Generate Key Hash

Question

Trying to create an android app with Facebook integration  I ve gotten to the part in the docs where you have to generate a key hash file  it specifies to run the following code  keytool -exportcert -alias androiddebugkey -keystore    android debug keystore    openssl sha1 -binary   openssl base64   When I run this in my terminal I get an error for Keystore tampered with or password was incorrect   I just want to generate my Key Hash  Can anyone point me in the right direction

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Even though this thread is old  yet I would like to share my experience  recently started working with facebook   which seems to me straight    Download openssl from the link bellow  https   code google com p openssl-for-windows downloads list Unzip it to a local drive  e g   C  openssl  To get the Development key for facebook integration  use the following command from the command line in windows    keytool -exportcert -alias androiddebugkey -keystore  HOMEPATH  android debug keystore    C  openssl bin openssl exe  sha1 -binary    C  openssl bin openssl exe  base64      NOTE   please replace the path for openssl exe  in this example it is    C  openssl bin openssl exe   with your own installation path     It will prompt for password  e g        Enter keystore password   android   Type android as password as shown above   Thats it  You will be given a 28 character long key  Cheers   Use the same procedure to get the Release key  Just replace the command with the following and use your release key alias   keytool -exportcert -alias YOUR RELEASE KEY ALIAS -keystore YOUR RELEASE KEY PATH    PATH FOR openssl exe  sha1 -binary   openssl base64

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The right key can be obtained from the app itself by adding the following code to toast the proper key hash  in case of Facebook SDK 3 0 onwards  this works   try               PackageInfo info   getPackageManager   getPackageInfo  com package mypackage           PackageManager GET SIGNATURES               for  Signature signature   info signatures                    MessageDigest md   MessageDigest getInstance  SHA                    md update signature toByteArray                     String sign Base64 encodeToString md digest    Base64 DEFAULT                   Log e  MY KEY HASH    sign                   Toast makeText getApplicationContext   sign          Toast LENGTH LONG  show                    catch  NameNotFoundException e      catch  NoSuchAlgorithmException e        Replace com package mypackage with your package name

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In order to generate key hash you need to follow some easy steps   1  Download Openssl from  here   2  Make a openssl folder in C drive  3  Extract Zip files into this openssl folder created in C Drive    4  Copy the File debug keystore from  android folder in my case  C  Users SYSTEM android  and paste into JDK bin Folder in my case  C  Program Files Java jdk1 6 0 05 bin   5  Open command prompt and give the path of JDK Bin folder in my case  C  Program Files Java jdk1 6 0 05 bin    6  Copy the following code and hit enter     keytool -exportcert -alias androiddebugkey -keystore debug keystore     c  openssl bin debug txt   7  Now you need to enter password  Password   android   8  If you see in openssl Bin folder  you will get a file with the name of debug txt  9  Now either you can restart command prompt or work with existing command prompt  10  get back to C drive and give the path of openssl Bin folder  11  copy the following code and paste      openssl sha1 -binary debug txt   debug sha txt   12  you will get debug sha txt in openssl bin folder  13  Again copy following code and paste     openssl base64 -in debug sha txt   debug base64 txt   14  you will get debug base64 txt in openssl bin folder  15  open debug base64 txt file Here is your Key hash

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Great blog post on the subject  Extracting the Key Hash from  p12 key   Open Terminal or Command line and navigate to where your  p12 key is  Type in     keytool -v -list -keystore mycert p12 -storetype pkcs12  where mycert p12 is the filename of your  p12 key  Enter keystore password  the one you used when exported  p12 key   4   Copy sha1 fingerprint signature bytes text  The bytes at sha1 fingerprint signature are needed to write the    sha1 bin    file  You can use a hexadecimal editor to paste the bytes you copied  Afterwards  save the file as    sha1 bin     Open terminal again and type in     openssl base64 -in sha1 bin -out base64 txt     The resulting    base64 txt    will contain the Key Hash that is needed for Facebook    Great and simple hexadecimal editor for mac  HexFiend  OpenSSL should be preinstalled on mac  and here is the link for Windows version   Link

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Try passing the password for the key and store as part of the command  keytool -exportcert -alias androiddebugkey -keystore    android debug keystore -keypass android -storepass android     openssl sha1 -binary     openssl base64

User · Answer

SIMPLEST SOLUTION OUT THERE FOR THIS PROBLEM    I have had this Problem for two months now  My key hashes have been pyling up to 9  Today i finally found the simple solution   STEP 1   Install the facebook sdk you downloaded from the facebook developer page on your phone  Don  t install the normal facebook app  Make sure you can log into facebook  Then log out   STEP 2   Export your app with your final release key as an apk  like you would when uploading it to the playstore   STEP 3   Put the Apk file on your phone via usb cable or usb stick   STEP 4   Install your app  using a file manager  Example   STEP 5   Launch your app and try to log in with facebook  A dialog will open and tell you   the key YOURHASHKEY has not been found in the facebook developer console   STEP 6   Write down the key   STEP 7   Put it into your facebook developer console and save  Now you are done  Anyone that downloads your app  published with earlier used keystore can log into facebook   Enjoy

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I  Create key hash debug for facebook Add code to print out the key hash for facebook     try           PackageInfo info   getPackageManager   getPackageInfo                   quot com google shoppingvn quot   PackageManager GET SIGNATURES           for  Signature signature   info signatures                MessageDigest md   MessageDigest getInstance  quot SHA quot                md update signature toByteArray                 Log i  quot KeyHash  quot                       Base64 encodeToString md digest    Base64 DEFAULT                    catch  NameNotFoundException e           catch  NoSuchAlgorithmException e            II  Create key hash release for facebook  Download openssl-0 9 8e X64  Make a openssl folder in C drive  Extract Zip files into openssl folder  Start - gt   Run  cmd  press enter    press  cd C  Program Files Java jdk1 6 0 45 bin  Note  C  Program Files Java jdk1 6 0 45 bin  is path to jdk folder in your computer   press  keytool -exportcert -alias gci -keystore D  folder keystorerelease   C  openssl bin openssl sha1 -binary   C  openssl bin openssl base64  Note   D  folder keystorerelease  is path to your keystorerelease  Enter keystore password   This is password when your register keystorerelease  Then you will have a key hash  jDehABCDIQEDWAYz5Ow4sjsxLSw   Login facebook  Access to Manage Apps  Paste key hash to your app on developers facebook com

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UPDATED ANSWER  Generating through code  Simpler method    In my experience  openssl always being troublesome  I tried the second method suggested by facebook  And it s wonderful  This is the best method to get the hash key   Second option is to print out the key hash sent to Facebook and use that value  Make the following changes to the onCreate   method in your main activity        Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState            try               PackageInfo info   getPackageManager   getPackageInfo                       com facebook samples loginhowto                        PackageManager GET SIGNATURES               for  Signature signature   info signatures                    MessageDigest md   MessageDigest getInstance  SHA                    md update signature toByteArray                     Log d  KeyHash    Base64 encodeToString md digest    Base64 DEFAULT                                catch  NameNotFoundException e               catch  NoSuchAlgorithmException e                          other operations     end of onCreate   Replace com facebook samples loginhowto with your own package name   package name in Manifest xml    Official link - https   developers facebook com docs android login-with-facebook    See the bottom of the page   OLD ANSWER  Generating Keyhash using openssl     to generate signature you need openssl installed on your pc  If you don   t have one download openssl from here In C    Create openssl folder extract the contents of downloaded openssl zip file into openssl folder in C drive open Command prompt move to bin of openssl  i e C  openssl bin in command prompt run the following command to generate your keyhash  While generating hashkey it should ask you password    keytool -exportcert -alias androiddebugkey -keystore  C  Users Anhsirk android debug keystore    openssl sha1 -binary   openssl base64   NOTE  in the above code note that   you need to give your path to user   i e in my case it is C  Users Anhsirk   you just need to change this for your user account       Give password as android     If it don   t ask for password your keystore path is incorrect   If everything works fine  it should give you the hashkey below

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Generate Debug hash key    public String hashkey Context context            String keyhash               try               PackageInfo info   context getPackageManager   getPackageInfo context getPackageName    PackageManager GET SIGNATURES               for  Signature signature   info signatures                    MessageDigest md   MessageDigest getInstance  SHA                    md update signature toByteArray                     Log d  KeyHash    Base64 encodeToString md digest    Base64 DEFAULT                    keyhash   Base64 encodeToString md digest    Base64 DEFAULT                           catch  PackageManager NameNotFoundException e               catch  NoSuchAlgorithmException e                       return keyhash          Generate Release hash key   keytool -exportcert -alias specialbridge -keystore  home shilpi newproject specialBridge SpecialBridgeAndroid keystore specialbridge jks   openssl sha1 -binary   openssl base64

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Simplest way to generate hash key  Requirement   SHA1 Key You can get SHA1 Key from your keystore file by two ways 1  Locate your keystore file  open command prompt on that location then use below mentioned command keytool -list -v -keystore  keystore name  -alias  alias name   and then enter your password then it will return md5  sha1 and sha256 key  OR 2  By running signingReport Refer below image   after you run the file your output will be generated containing required sha1 key   After you get the required SHA1 Key Then goto http   tomeko net online tools hex to base64 php and paste your sha1 key  and finally you will get Required HashKey which you can use it to apply on facebook

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In order to generate  release key hash you need to follow some easy steps   1  Download Openssl  2  Make a openssl folder in C drive  3  Extract Zip files into this openssl folder created in C Drive   4  Copy the File debug keystore from  android folder in my case  C  Users SYSTEM android  and paste into JDK bin Folder in my case  C  Program Files Java jdk1 6 0 05 bin   5  Open command prompt and give the path of JDK Bin folder in my case  C  Program Files Java jdk1 7 0 40 bin    6  Copy the following code and hit enter  keytool -exportcert -alias abcd-keystore D  Projects MyAppFolder keystore txt   C  openssl bin openssl sha1 - binary   C  openssl bin openssl base64 ex - keytool -exportcert -alias  your sing apk alias name enter here like my sign apk alian name is abcd  -keystore  signed apk generated keystore apth enter here     openssl bin folder path enter here  sha1 - binary    openssl bin folder path enter here  base64  7  Now you need to enter password  Password    enter your sign keystore password here   8  you got keystore which are used for release app key hash

User · Answer

The password of the debug certificate is android and not Android

User · Answer

Delete your debug certificate under    android debug keystore  on Linux and Mac OS X   the directory is something like  USERHOME   android on Windows   The Eclipse plugin should then generate a new certificate when you next try to build a debug package   Let me know if that works

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One line solution to generate for facebook  keytool -exportcert -alias androiddebugkey -keystore    android debug keystore   openssl sha1 -binary   openssl base64

User · Answer

Hi everyone its my story how i get signed has key for facebook  first of all you just have copy this 2 methods in your first class       private void getAppKeyHash         try           PackageInfo info   getPackageManager   getPackageInfo                  getPackageName    PackageManager GET SIGNATURES           for  Signature signature   info signatures                MessageDigest md               md   MessageDigest getInstance  SHA                md update signature toByteArray                 String something   new String Base64 encode md digest    0                System out println  HASH      something               showSignedHashKey something                    catch  NameNotFoundException e1               TODO Auto-generated catch block         Log e  name not found   e1 toString           catch  NoSuchAlgorithmException e             Log e  no such an algorithm   e toString           catch  Exception e            Log e  exception   e toString             public void showSignedHashKey String hashKey         AlertDialog Builder adb   new AlertDialog Builder this       adb setTitle  Note Signed Hash Key        adb setMessage hashKey       adb setPositiveButton  OK   new DialogInterface OnClickListener             public void onClick DialogInterface dialog  int which                            adb show          Call funcation getAppKeyHash   from your oncreate methode if you want signed hash then make signed build install signed build and run you will get hash key in dialog then just note it and update it on facebook dev account and comment that function and make another signed APK

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I was able to do perform the requested task with some of the solutions here  but thought to myself  boy that is stupid    why not to write a small Java code that does this and pack it into a Jar  so I did     A link to download the Jar  Works on Windows 8    didn t try any other OS

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If you are releasing  use the keystore you used to export your app with and not the debug keystore

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At last     Here my story     Add this code to your main activity  after you set layout   try      PackageInfo info   getPackageManager   getPackageInfo  PROJECTNAME   PackageManager GET SIGNATURES     for  Signature signature   info signatures          MessageDigest md   MessageDigest getInstance  SHA          md update signature toByteArray           String sign Base64 encodeToString md digest    Base64 DEFAULT         Log e  MY KEY HASH    sign           textInstructionsOrLink    TextView findViewById R id textstring           textInstructionsOrLink setText sign         Toast makeText getApplicationContext   sign  Toast LENGTH LONG  show          catch  NameNotFoundException e        Log d  nope   nope      catch  NoSuchAlgorithmException e       Change PROJECTNAME to your package name  Sign your app  Android Tools- Export Signed Application  In your main activity where you paste code from 2 option  in your layout create TextView with id textstring uncomment two lines  that your sign code would be set to TextView  6 Wuolia  you have your HASH   install app on your phone    and check your hash Key  Now when it is visible   go to facebook app you created and add it to  Key Hashes  Note that your package name should be same as on facebook  Package Name  under  Key Hashes  Have a nice day

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The only thing working for me is using the password android  Why is that not mentioned in any guides out there

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use this in kotlin for print key hash in log  try           val info   context getPackageManager   getPackageInfo context packageName                  PackageManager GET SIGNATURES           for  signature in info signatures                val md   MessageDigest getInstance  SHA               md update signature toByteArray                Log d  Key hash    android util Base64 encodeToString md digest    android util Base64 DEFAULT                  catch  e Exception

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If your password android is wrong then Put your pc password on that it works for me   And for generate keyHash try this link Here

[android] Facebook Android Generate Key Hash

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