<p>No, this is not possible.</p>
<p>The mnemonic and passphrase are put through PBKDF2. Any change in the input results in a completely different output.</p>
<p>While it is possible that there exists some 12 word mnemonic that just happens to hash to the same seed as your original mnemonic + passphrase, this would require bruteforcing all possible mnemonics to discover, and would not be derivable from the original mnemonic in any form - a hash collision would be completely unrelated.</p>

CC BY-SA 4.0
2020-09-20T02:50:09.837Z
2020-09-20T02:50:09.837Z
Raghav Sood
<p>Is it possible to derive a new 12 word seed from a 12 word seed with passphrase (13th word) such that they both produce the same master key?</p>

<mnemonic-seed>
Convert 12 word seed with passphrase -> 12 word seed without passphrase
Holy Mackerel
# Convert 12 word seed with passphrase -> 12 word seed without passphrase

(Asked by: username_0 on 2020-09-20)

Is it possible to derive a new 12 word seed from a 12 word seed with passphrase (13th word) such that they both produce the same master key?

**Tags:** mnemonic-seed


---

## 1 answers

### Answer by username_1 on 2020-09-20. Score: 4 | Accepted answer

No, this is not possible.

The mnemonic and passphrase are put through PBKDF2. Any change in the input results in a completely different output.

While it is possible that there exists some 12 word mnemonic that just happens to hash to the same seed as your original mnemonic + passphrase, this would require bruteforcing all possible mnemonics to discover, and would not be derivable from the original mnemonic in any form - a hash collision would be completely unrelated.


---

