Ethereum wallet keystore forgot password

1. Common measures to deal with the loss of private key and password:
1. Delete the wallet by mistake
this is the same operation as I do. What should I do in case of this kind of thing? In fact, as long as you remember the private key, download a wallet again, import the private key and reset the password of the wallet
2. The mobile phone is missing or broken
if your mobile phone is stolen or broken, as long as the private key or mnemonic word is still there, you can download a wallet again, import the private key (or mnemonic word) and recreate the wallet
3. The private key is forgotten, but the mnemonic (or JSON file) is still there
if your private key is lost, but the mnemonic (or JSON file) is still there, don't worry, mnemonic can help you retrieve the private key,
4. The private key is forgotten
the wallet hasn't been deleted. If your private key is forgotten, but the wallet is still on your mobile phone, it's very easy to do, You just log in with your password, enter your wallet, and back up your private key
5. The private key, password and mnemonic words have been lost
sorry, no one can help you
6. Forgotten password or wrong input
this is the same as some other apps that we usually log in. If we forget password or input error several times, click forget password to retrieve it. Back to the decentralized wallet, we need to use the private key or mnemonic words to import the wallet to reset the password
7. Forget the mnemonic words
import the wallet with the private key and back it up again
8. Keystore forgotten
if your wallet is not deleted, this is the same way as if your private key is forgotten but your wallet is not deleted, that is, log in with your wallet password and make a new backup; But if your wallet is deleted, that is, it is unloaded, you need to import the wallet with mnemonic words or private key to backup the keystore again!

2.

Keysore file is a file format (JSON) in which Ethereum wallet stores private keys. It uses user-defined password encryption to protect the wallet to a certain extent. The degree of protection depends on the password strength of the user encrypting the wallet. If the password is similar to 123456, it is extremely insecure

There are two points to note when using keysore:

1

2. Be sure to remember the password for encrypting keysore. Once you forget the password, you will lose the right to use keysore, and imtoken can't help you find your password, so be sure to keep keysore and password properly

keysore style

PS: keysore's password is unique and unchangeable. If you want to change the wallet password, you need to use mnemonics or plaintext private key to import the wallet again, and use the new password to encrypt to generate a new keysore

3. Unknown_Error

4. Android signature is very important for our application development. If an app is published with one signature, it will be very troublesome to replace it with another signature. The most obvious feature is that two apps with different signatures cannot be replaced. In our actual development, we often encounter the problem of keystore forgetting password. What should we do in this case< br /> http://blog.csdn.net/qqxiaoqiang1573/article/details/52127667

5. Keystore passwords can be brutally cracked
Android keystore password recovery -

Android / Java keysore recovery tool
you can try this tool
if you can remember part of the password, It won't take long to crack it

share your experience:
[software]: Android keysore password recovery
[website]: https://code.google.com/p/android-keystore-password-recover/
[running environment]: JDK7

Download jar package: https://drive.google.com/file/d/0B_ Rw7knjv3batldrlxmwcvrud2c / edit? USP = sharing. It has been tried many times and proved that it has been dropped by the Chinese river crab, so it can only be downloaded over the wall. Download: androidkeystorebrute_ V1.05.jar

the government provides three methods to crack the password:
[MW_ shl_ Code = Java, true] there are 3 methods to recover your keystore password:
- simple brute force
- dictionary attack
- Smart wordlist attack[/ mw_ shl_ Code]
usage:
[MW]_ shl_ code=java,true]execute with
java -jar AndroidKeystoreBrute.jar < args>< br />possible args
-m < 1..3> Method
-k < path> path to your keystore
-d < path> dictionary (for method 2 and 3)
-p use common replacements like '@&# 39; for ' a'( for method 3) WARNING - very slow!! < br />-start < String> sets the start String for the password (for brute force)
-w writes a new keystore with same password than the key
-h prints helpscreen
example for brute-force attack
java -jar AndroidKeystoreBrute_ v1.05.jar -m 1 -k <... keystore> - start AAAAAA
example for dictionary attack
java -jar AndroidKeystoreBrute_ v1.05.jar -m 2 -k " C:\&# 92; mykeystore.keystore" - d " wordlist.txt" < br />example for smart wordlist attack (recommend)

java -jar AndroidKeystoreBrute_ v1.05.jar -m 3 -k " C:\&# 92; mykeystore.keystore" - d " wordlist.txt" [/ mw_ shl_ Code]

at the beginning, I used method 1. I ran all night, but I didn't finish. There are too many default alphabetic passwords, and it's impossible to crack them in this way<

later, I tried to use method 3, but I didn't pay attention to it. The official recommendation is method 3:
first create a TXT, such as passlib.txt: enter your commonly used phrase for setting password in the text document, or you vaguely remember the words you might use when you created it. Anyway, write down all you can think of:
[MW]_ shl_ code=java,true]helloworld
ILoveYou
java
android
com.ldxx.firstapp[/mw_ shl_ Code]

and then execute:
[MW_ shl_ code=java,true] java -jar AndroidKeystoreBrute_ v1.05.jar -m 3 -k " C:\&# 92; mykeystore.keystore" - d " passlib.txt" [/ mw_ shl_ Code]
if the phrase in passlib.txt you created does appear in your keystore password, it will be instantaneous to retrieve the password:
My execution result:

[MW]_ shl_ code=java,true] Got Password in 0 seconds
Password is: android521 for alias ldxxfirstapp[/mw_ shl_ Code]

note: when the command line executes Java - jar commands, the root directory must be androidkeystorebrute_ The directory of v1.05.jar, such as androidkeystorebrute_ V1.05.jar is placed in
C: & # 92; key\ AndroidKeystoreBrute_ In v1.05.jar, CD C: \ is obtained first; The key is then executed, otherwise an error will be reported.

6. (1) If you forget the address, you can use the private key, mnemonic words, keystore + password to import the wallet to retrieve it< Br > (2) if you forget the password, you can use the private key and mnemonic words to import the wallet to reset the password< Br > (3) if the password is forgotten and the private key and mnemonic words are not backed up, the password cannot be reset and the token cannot be transferred, which is tantamount to losing control of the wallet< Br > (4) if you forget the password, the keystore will lose its function< Br > (5) if you forget the private key, you can export the private key as long as the wallet has not been deleted and the password has not been forgotten< Br > (6) if you forget the private key, you can also import the wallet to retrieve it with mnemonic words and keystore + password< Br > (7) if you forget the mnemonic words, you can import the wallet to back up the mnemonic words through the private key and keystore + password< Br > (8) if you forget the keystore, you can back up the keystore as long as you don't delete the wallet or forget the password< Br > (9) if you forget the keystore, you can import the wallet to back up the keystore through the private key and mnemonic words.

7. (1) If you forget the address, you can use the private key, mnemonic words, keystore + password to import the wallet to retrieve it< Br > (2) if you forget the password, you can use the private key and mnemonic words to import the wallet to reset the password< Br > (3) if the password is forgotten and the private key and mnemonic words are not backed up, the password cannot be reset and the token cannot be transferred, which is tantamount to losing control of the wallet< Br > (4) if you forget the password, the keystore will lose its function< Br > (5) if you forget the private key, you can export the private key as long as your wallet is not deleted and your password is not forgotten< Br > (6) if you forget the private key, you can also import the wallet to retrieve it with mnemonic words and keystore + password< Br > (7) if you forget the mnemonic words, you can import the wallet to back up the mnemonic words through the private key and keystore + password< Br > (8) if you forget the keystore, as long as your wallet is not deleted and your password is not forgotten, you can back up the keystore again< Br > (9) if you forget the keystore, you can import the wallet to back up the keystore through the private key and mnemonic words.

8. Private key, auxiliary word device, keystore + password import and retrieve

9. I've been waiting for several days.
it very esay
keystore is a typical password file. The default password is changeit. You can modify the value of the
keystore.password property in the web.properties file to change the password

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