APK file signing and zipping for Play Store upload

APK_signing

cd ~/build-output-directory/android/

jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 unaligned.apk your-app-name

$ANDROID_HOME/build-tools/23.0.0/zipalign 4 unaligned.apk production.apk

# To unsign APK
zip -d yourapp.apk "META-INF*"

# Creating keystore and then signing app for Play Store

keytool -genkey -v -keystore ~/AppAliasName.keystore -alias AppAliasName -keyalg RSA -keysize 2048 -validity 10000

jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore ~/AppAliasName.keystore AppAliasName_PRO_release_26_4_2016.apk AppAliasName

zipalign 4 AppAliasName_release_26_4_2016.apk AppAliasName_prod.apk

# iOS: Misc Certificates, Keys, etc related commands
openssl req -noout -text -in server.csr
codesign -d --entitlements :- AppName.app

# Export .cer file and .p12 file from the KeyChain Tool
# Generate the pem file
openssl x509 -in Cert.cer -inform der -out Cert.pem 

# Generate the key file
openssl pkcs12 -nocerts -out CertKey.pem -in Cert.p12 

# Concatenate both together
cat Cert.pem CertKey.pem > appname_apns.pem

# Use that to test with Apple
openssl s_client -connect gateway.push.apple.com:2195 -cert appname_apns.pem -debug -showcerts