user121006: As title, I've got an encrypted string, which gives me .org.dogecoin.production.blabla (or something like this) after I use openssl enc -d -aes-256-cbc -md md5 -a -in ENCRYPTEDFILE -out dogecoin-wallet-decrypted
After browsing, some gives me the idea to go through BIP39. Anyway, actually I don't understand it, though I did find a 12 words Mnemonic code.
So what's next ? Thanks for any help.

user5750: You'd need to name the wallet specifically. https://play.google.com/store/apps/details?id=org.dogecoin.production.blabla doesn't exist.
Assuming you were using a fork of the schildbach wallet, the general procedure based on the most likely fork is:
https://github.com/langerhans/dogecoin-wallet-new/blob/1ee32cc/wallet/README.recover.md
Your trouble will arrive when you try to use bitcoinj to decode your protobuf.  You will want to find a fork that supports dogecoin.

121006: <p>As title, I've got an encrypted string, which gives me <code>.org.dogecoin.production.blabla</code> (or something like this) after I use <code>openssl enc -d -aes-256-cbc -md md5 -a -in ENCRYPTEDFILE -out dogecoin-wallet-decrypted</code></p>
<p>After browsing, some gives me the idea to go through BIP39. Anyway, actually I don't understand it, though I did find a 12 words Mnemonic code.</p>
<p>So what's next ? Thanks for any help.</p>
 5750: <p>You'd need to name the wallet specifically. <a href="https://play.google.com/store/apps/details?id=org.dogecoin.production.blabla" rel="nofollow noreferrer">https://play.google.com/store/apps/details?id=org.dogecoin.production.blabla</a> doesn't exist.</p>
<p>Assuming you were using a fork of the <code>schildbach</code> wallet, the general procedure based on the most likely fork is:</p>
<p><a href="https://github.com/langerhans/dogecoin-wallet-new/blob/1ee32cc/wallet/README.recover.md" rel="nofollow noreferrer">https://github.com/langerhans/dogecoin-wallet-new/blob/1ee32cc/wallet/README.recover.md</a></p>
<p>Your trouble will arrive when you try to use <code>bitcoinj</code> to decode your protobuf.  You will want to find a fork that supports dogecoin.</p>
