Openssl is not recognized as an internal or external command

Question

I wish to generate an application signature for my app which will later be integrated with Facebook. In one of Facebook's tutorials, I found this command:

keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | openssl sha1 -binary | openssl base64

In the tutorial, it says that by running this cmd, my process of generating the signature will start.

However, this command gives an error:

openssl is not recognized as an internal or external command

How can I get rid of this?

Solution 1

Well at the place of OpenSSL ... you have to put actually the path to your OpenSSL folder that you have downloaded. Your actual command should look like this:

keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | "C:\Users\abc\openssl\bin\openssl.exe" sha1 -binary | "C:\Users\abc\openssl\bin\openssl.exe" base64

Remember, the path that you will enter will be the path where you have installed the OpenSSL.

Edit:

you can download OpenSSL for windows 32 and 64 bit from the respective links below:

OpenSSL for 64 Bits

OpenSSL for 32 Bits

Solution 2

Please follow these step, I hope your key working properly:

1. Step 1 You will need OpenSSL. You can download the binary from openssl-for-windows project on Google Code.

2. Step 2 Unzip the folder, then copy the path to the bin folder to the clipboard.

   For example, if the file is unzipped to the location C:\Users\gaurav\openssl-0.9.8k_WIN32, then copy the path C:\Users\gaurav\openssl-0.9.8k_WIN32\bin.

3. Step 3 Add the path to your system environment path. After your PATH environment variable is set, open the cmd and type this command:

   C:\>keytool -exportcert -alias androiddebugkey -keystore [path to debug.keystore] | openssl sha1 -binary | openssl base64
   

   Type your password when prompted. If the command works, then you will be shown a key.

Solution 3

Use the entire path, like this:

exportcert -alias androiddebugkey -keystore ~/.android
/debug.keystore | "C:\openssl\bin\openssl.exe" sha1 -binary | "C:\openssl\bin\op
enssl.exe" base64

It worked for me.

Solution 4

This is worked for me successfully.

"C:\Program Files\Java\jdk1.6.0_26\bin\keytool.exe" -exportcert -alias sociallisting -keystore "D:\keystore\SocialListing" | "C:\cygwin\bin\openssl.exe" sha1 -binary | "C:\cygwin\bin\openssl.exe" base64

Be careful with below path :

• "C:\Program Files\Java\jdk1.6.0_26\bin\keytool.exe"
• "D:\keystore\SocialListing" or it can be like this "C:\Users\Shaon.android\debug.keystore"
• "C:\cygwin\bin\openssl.exe" or can be like this C:\Users\openssl\bin\openssl.exe

If command successfully work then you will see this command :

Enter keystore password : typeyourpassword

Encryptedhashkey**

Solution 5

it's late answer but it will help to lazy people like me.. add this code to your Application class, there is no need to download openssl and no need to set the path.. only need is just copy this code.. and keyHash will generated in log.

import com.facebook.FacebookSdk;
public class MyApplication extends Application {

    @Override
    public void onCreate() {
        super.onCreate();
        FacebookSdk.sdkInitialize(getApplicationContext());
        AppEventsLogger.activateApp(this);
        printKeyHash();
    }

    private void printKeyHash() {
        try {
            PackageInfo info = getPackageManager().getPackageInfo(
                    getPackageName(), PackageManager.GET_SIGNATURES);
            for (Signature signature : info.signatures) {
                MessageDigest md = MessageDigest.getInstance("SHA");
                md.update(signature.toByteArray());
                Log.i("KeyHash:",
                        Base64.encodeToString(md.digest(), Base64.DEFAULT));
            }
        } catch (PackageManager.NameNotFoundException e) {
            Log.e("jk", "Exception(NameNotFoundException) : " + e);
        } catch (NoSuchAlgorithmException e) {
            Log.e("mkm", "Exception(NoSuchAlgorithmException) : " + e);
        }
    }
}

and do not forget add MyApplication class in manifest:

<application
        android:name=".MyApplication"
</application>

View more solutions

Comments

[Michael Petrotta]

Download and install OpenSSL.

[Khurram W. Malik]

I downloaded 3 of them no one is compatible :/

[Michael Petrotta]

What does that mean, khurram?

[Khurram W. Malik]

I downloaded many versions of openssl from the link u gave but each of them gives an error before installation that it isnt compatible with windows 7- 64 bit. Can you tell me the exact openssl i require

[Usama Sarwar]

you can get it from the link I have posted in my ans below...

[RBT]

Related post - How to install OpenSSL in windows 10?

[Akhil Jain]

it says c:\openssl\bin\openssl is not recognized

[AnhSirk Dasarp]

a better way would be to execute the original command from openssl/bin directory. I.e if my openssl directory is in C:dev, I would move to C:\dev\openssl\bin, and execute the command as it is

[phanhongphucit]

you should point out the openssl.exe file: exportcert -alias androiddebugkey -keystore ~/.android /debug.keystore | "C:\openssl\bin\openssl.exe" sha1 -binary | "C:\openssl\bin\op enssl.exe" base64

[surhidamatya]

@LatentBoy yess you are right. your way worked for me. Thanks alot.

[Azahar]

must download openssl from here code.google.com/p/openssl-for-windows/downloads/… and copy bin folder and paste to C:\openssl\

[Krupal Shah]

thanks...after trying about an hour, your answer worked for me

[Harsha]

can you suggest openssl for windows32bit plse

[Usama Sarwar]

@Harsha Please see the edit section, now it has got OPenSSL link for 32 bits as well.

[PAA]

Usama : Could you please guide on the issue stackoverflow.com/questions/38935267/… ?

[Neon Warge]

The download links available seems to be source files and so it doesn't contain binary files which I believe I may have to build myself out of the box. Where can I get the official binary files?

[Jaime Montoya]

It should be something like this: C:\Program Files\Java\jre1.8.0_111\bin>keytool -exportcert -alias androiddebugkey -keystore C:\Users\jaimemontoya\.android\debug.keystore | "C:\Program Files (x86)\GnuWin32\bin\openssl.exe" sha1 -binary | "C:\Program Files (x86)\GnuWin32\bin\openssl.exe" base64

[MetaSnarf]

does this work for release version of facebook? if not how?

[Sagar Chavada]

This code is used to generate keyhash. And its same key for release too. For release version make sure that you set public access in facebook developer console.

[Ionut]

What bin folder are you refering to in the second step?

[ralphgabb]

'"C:\OpenSSL\bin.openssl.exe"' is not recognized as an internal or external command, operable program or batch file.

[Someone Somewhere]

FYI: Usually the debug.keystore password is just "android".

[Someone Somewhere]

FYI: Usually the debug.keystore password is just "android".

[Yesha Shah]

Getting error " Both context and applicationId must be non-null", when used above code. @SagarChavada

[Narendra_Nath]

This worked.. Thank you

[Paul Grei]

Remove double quotes and it will work :) like so : keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | C:\openssl\bin\openssl.exe sha1 -binary | C:\openssl\bin\openssl.exe base64

[Devendra Singraul]

It is good idea to add path in system environment variable