<p>Dont use a password manager, they tend to get hacked and leak information.</p>
<p>Dont use a random generator, if you loose it, you will never be able to guess it.</p>
<p>Usually 20+ character is a good and safe lenght, add names or words you could remember, adding numbers or dates.</p>
<p>Having helped hundreds of people with lost passwords, my experience is if you use a too complicated password, your will have a hard time restoring it if you loose the note.</p>
<p>If the passphrase would be just the password to your wallet, then disregard above, but since its used with a 24 word seed then its just an additional layer that does need as much security as a normal password would.</p>

CC BY-SA 4.0
2024-01-31T11:37:48.880Z
2024-01-31T11:37:48.880Z
KeychainX
<p>Depends. Best to use a passphrase pulled from wordlists, like EFF Diceware's or BIP39, so then six words.</p>
<p>But do not go over 49 characters.</p>
<p>You can get away with a string under 20 characters if the characters are truly random generated, upper/lower.</p>
<p>Using a password manager is a great way to go if you don't want to use physical dice or coins.</p>
<p>Whatever you do, do NOT create one from your own brain, easily crackable in a short time no matter what, must come from high entropy, randomly generated.</p>

CC BY-SA 4.0
2022-02-18T08:10:54.283Z
2022-02-18T08:10:54.283Z
HansBKK
<p>The coldcard and trezor both has support for a passphrase. What amount of characters in this passphrase that would be considered unbreakable with current technology and within some years of bruteforcing?</p>

<wallet><mnemonic-seed><passphrase><bip>
What is a safe amount of characters in a passphrase?
Guerlando OCs
# What is a safe amount of characters in a passphrase?

(Asked by: username_0 on 2021-11-08)

The coldcard and trezor both has support for a passphrase. What amount of characters in this passphrase that would be considered unbreakable with current technology and within some years of bruteforcing?

**Tags:** wallet, mnemonic-seed, passphrase, bip


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## 2 answers

### Answer by username_1 on 2024-01-31. Score: 0

Dont use a password manager, they tend to get hacked and leak information.

Dont use a random generator, if you loose it, you will never be able to guess it.

Usually 20+ character is a good and safe lenght, add names or words you could remember, adding numbers or dates.

Having helped hundreds of people with lost passwords, my experience is if you use a too complicated password, your will have a hard time restoring it if you loose the note.

If the passphrase would be just the password to your wallet, then disregard above, but since its used with a 24 word seed then its just an additional layer that does need as much security as a normal password would.


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### Answer by username_2 on 2022-02-18. Score: 0

Depends. Best to use a passphrase pulled from wordlists, like EFF Diceware's or BIP39, so then six words.

But do not go over 49 characters.

You can get away with a string under 20 characters if the characters are truly random generated, upper/lower.

Using a password manager is a great way to go if you don't want to use physical dice or coins.

Whatever you do, do NOT create one from your own brain, easily crackable in a short time no matter what, must come from high entropy, randomly generated.


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