1. source KEYSTORE.jks
  2. detect alias pb_sign_XXXXXXXXX
  3. relace on code alias to real

script.sh:

echo "see alias like pb_sign_XXXXXXXXX"
#keytool -list -keystore KEYSTORE.jks
#exit

keytool -exportcert -alias  pb_sign_XXXXXXXXX \
 -keystore KEYSTORE.jks -rfc -file pb.pem

keytool -import -trustcacerts \
  -keystore pb.jks \
  -storepass 1PASSWORD2 -noprompt \
  -file pb.pem -alias pb_sign_XXXXXXXXX

keytool -importkeystore -srcstorepass  1PASSWORD2 \
 -srckeystore pb.jks -destkeystore pb.p12 \ 
 -srcstoretype jks -deststoretype pkcs12
rm pb.jks
  1. result pb.pem
  2. result pb.p12

За матеріалами:

jks від Приватбанку конвертувати в pem та/або p12