Paper backup for cryptographic key

Use this page to pretty-print your cryptographic key to paper as a 'disconnected' backup.
It does nothing with the data, it just formats it for printing.
Feel free to look at the code of this page, download it, modify it.

Don't worry : NOTHING is sent to the Internet, you can disconnect from the network if you wish.

Please fill the following form, then print this page to backup your key data to paper.
Make sure that you can read all characters on the printed result, because in order to restore the key you will need to type exactly all characters. Especially, make sure that you can distinguish i,I,l,1 and o,O,0.

The page will look like : Use the "print preview" feature of your browser to preview accurate rendering

foo@android

Date : Sat Jan 31 2015 15:45:59 GMT+0100 (CET)
 Sample character set :
ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
1234567890+/
Password : foobar
Enjoy !
change font size : + -
-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

How to restore this key

To restore this key, type the characters from the frame into a text file that you will import into your key store. Also include line breaks and 'BEGIN' and 'END' lines.

Instructions for Java keystores

Restoring key from text file

openssl pkcs12 -export -in foo-restored.pem -out foo-restored.p12

keytool -importkeystore -srckeystore foo-restored.p12 -srcstoretype pkcs12 -destkeystore restored.jks -deststoretype jks -srcalias 1 -destalias foorestored

Exporting key to readable text

Follow those instructions if you want to backup another key.

keytool -importkeystore -srcstoretype jks -srcalias foo -deststoretype pkcs12 -srckeystore mykeys.jks -destkeystore foo.p12

openssl pkcs12 -in foo.p12 -out foo.pem -nodes

Useful links