Restoring a wallet from a Keystore file has only one hard requirement: you must remember the password you set when encrypting the file. The file itself is in JSON format. It stores your private key encrypted with your password, not the plaintext private key. If you enter the wrong password, the wallet software will directly tell you that decryption failed. If you forget the password, there is no official way to recover it, and the assets in the file cannot be restored through this Keystore.
A leading global cryptocurrency platform,suitable for both beginners and experienced traders.
New user benefit: 20% off trading fees upon registration!！
First, confirm which type of Keystore you have
This article refers to the JSON file exported from an Ethereum wallet. Common file names look like UTC--2026-... or a UUID string plus .json. If you open it with a text editor, you will see fields such as "crypto", "cipher": "aes-128-ctr", "kdf": "scrypt" or "pbkdf2". If you have a Java .jks or .jceks file, that is a different thing and has nothing to do with a crypto wallet.
Restore process: import it in the wallet, not by double-clicking the file
Different wallets may use slightly different names for the entry, but the logic is the same: find the "Import Wallet" or "Add Wallet" option, choose the Keystore or JSON file import method, upload the file, and enter the password.
Take imToken as an example: open the App. If you do not have an identity yet, create one first to enter the wallet interface. Then tap "Me" → "Wallet Management" → "+ Add Wallet" → "Import Wallet", select Keystore, upload the file, and enter the transaction password. If you have just downloaded the App, the homepage usually shows an "Import Wallet" option directly. Choose Keystore.
After importing, check the displayed address. A Keystore file corresponds to one specific address. If the address shown after import is not your original address, it means you selected the wrong file, or you are remembering the wrong wallet for this file. If the address is wrong, even with the correct password, the restored wallet will not be the one you are looking for.
Possible reasons when import fails
Password error message. First rule out the most basic issues: uppercase and lowercase letters, full-width and half-width input methods, or accidentally adding an extra space. Keystore password verification is done through the MAC value in the file. Even if the password differs by one character, verification will not pass. If you are sure you remember the password but it keeps failing, check whether the Keystore file was damaged when copied from another device, or whether the password you remember belongs to a different wallet file.
Invalid file format message. Confirm that you uploaded a complete JSON file, not a truncated copy, and not a private key string saved directly with a .json suffix. A Keystore file has a fixed structure. Missing fields or format errors will cause parsing to fail.
Address is correct but balance is zero. This is usually not a Keystore problem. Check whether the network you selected during import is correct. An Ethereum mainnet address and addresses on some compatible chains have the same format, but assets exist on different networks. If you originally used an Ethereum mainnet wallet, make sure you are viewing the mainnet account after import.
If you really cannot remember the password
There is no "security verification" that can bypass the password. The design purpose of Keystore is: without the password, the private key cannot be obtained. Some online tools such as hashcat and BTCRecover claim they can help recover Keystore passwords. Their working principle is to use candidate words, rules, and variations you provide to perform brute-force attempts, not to "crack" the encryption itself. These tools are only useful in one situation: you roughly remember the structure or part of the password, such as remembering it was "a certain word plus a few numbers", or remembering the length range. If you do not remember any clue at all, randomly trying password combinations of more than 8 characters is computationally extremely expensive under Ethereum Keystore KDF parameters and is practically infeasible.
When using any third-party password recovery tool, always operate on a copy of the Keystore file in an offline environment. Do not run it on the original file, and do not upload the Keystore file or password to any online website. The combination of a Keystore file and its password is equivalent to control of the private key.
Completion standard
It is not "the import button has been clicked", but: the address displayed in the wallet interface is exactly the same as the address where you originally held assets, and the asset balance under that address is visible. If the address is wrong, the recovery process is not complete, and you need to check the source of the file. If the address is correct but assets do not appear, check the network selection. Only when both the address and balance are confirmed correct is the recovery complete. After successful recovery, it is recommended to back up the current wallet again using the plaintext private key or mnemonic phrase as soon as possible, to avoid being stuck again with only a Keystore and a vague memory of the password.
A leading global cryptocurrency platform,suitable for both beginners and experienced traders.
New user benefit: 20% off trading fees upon registration!！
References
- "}
