Is there any way to get key hash from signed APK?

android facebook codesign
Zheng Li picture Zheng Li · Jul 2, 2013 · Viewed 39.2k times · Source

Is there any way to get key hash from signed APK? We have a signed Android apk file, and we want to find out key hash of this APK, for Facebook SDK. Can we do that by something like jarsigner?
Any suggestions?

Answer

user521297 picture user521297 · Mar 27, 2015

On linux, I used this command to get the key hash from an apk:

 keytool -list -printcert -jarfile [path_to_your_apk] | grep -Po "(?<=SHA1:) .*" |  xxd -r -p | openssl base64

For Mac Users (OS X) as there is no grep -P support

keytool -list -printcert -jarfile ~/Downloads/YOURAPKFILE.apk | grep "SHA1: " | cut -d " " -f 3 | xxd -r -p | openssl base64

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