How is a mnemonic phrase created, for example in a bitcoin wallet?

Question

Passwords

Good afternoon.
To access bitcoin funds, it is enough to know its private key, like sd7f6ds7fs6df7sd6f7ds6fds7f5dsf6sd5fd.
But wallets like electrum also offer to remember the seed - a set of words.
For example: window glass sun water beach sky browser
These words, as I understand it, should be enough to restore access to bitcoin through any suitable wallet application.
What I can't figure out is how does this all work? How can the conditional "sd7f6ds7fs6df7sd6f7ds6fds7f5dsf6sd5fd" be encoded in these words?

Answer 1

The wallet software uses a whole set of words taken from a dictionary, with each word assigned to a specific number. The mnemonic phrase can be converted to a number which is used as a seed that generates all key pairs for that wallet .

https://ru.bitcoinwiki.org/wiki/%D0%9C%D0%BD%D0%B5...
The mnemonic phrase is used to calculate the sid to then generate keys, here is a very simplified example:
Mnemonic phrase: window glass browser
Numbers: window = 1, glass =2, browser =5
LED = 1 + 2 + 5 = 8;

echo sha1(8); // fe5dbbcea5ce7e2988b8c69bcfdfde8904aabc1f