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What method does Electrum bitcoin wallet use for password encryption?

I want to check to see if the file encrypted with the password is secure. And what are the ways around to decrypt it outside the electrum.

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https://electrum.readthedocs.io/en/latest/faq.html#how-is-the-wallet-encrypted

Electrum uses two separate levels of encryption:

Your seed and private keys are encrypted using AES-256-CBC. The private keys are decrypted only briefly, when you need to sign a transaction; for this you need to enter your password. This is done in order to minimize the amount of time during which sensitive information is unencrypted in your computer’s memory.

In addition, your wallet file may be encrypted on disk. Note that the wallet information will remain unencrypted in the memory of your computer for the duration of your session. If a wallet is encrypted, then its password will be required in order to open it. Note that the password will not be kept in memory; Electrum does not need it in order to save the wallet on disk, because it uses asymmetric encryption (ECIES).

see

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  • Having a password and file، Is there a way to decrypt the file outside of Electrum?
    – Monero
    Jul 25 at 20:14
  • @Monero: as a software developer, my first thought is to inspect Electrum's Python source code, find where it reads and decrypts the file and cut & paste much of that into a separate program. Otherwise I don't know. Maybe there's some tool such as OpenSSL which supports the appropriate algorithm. You'd have to use a search engine to look for something like "ECIES decryption tool OR utility OR program". ... which finds things like pypi.org/project/eciespy (untested) - However the job may be not that simple. Jul 25 at 21:46

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