Algorithm for getting Mnemonic Seed from 256-bitsHexadecimal Seed about monero HOT 12 CLOSED

Tnx I'll try that😊

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bytes_to_words in src/mnemonics/electrum-words.cpp
From a comment in that function:
// 4 bytes -> 3 words. 8 digits base 16 -> 3 digits base 1626

from monero.

bytes_to_words in src/mnemonics/electrum-words.cpp From a comment in that function: // 4 bytes -> 3 words. 8 digits base 16 -> 3 digits base 1626

I have 32 bytes. You give me the algorithm for 32 / 4 * 3 = 24 words. How can to get the 25-th word?

from monero.

The last word is a checksum.

https://monero.stackexchange.com/questions/874/what-is-the-checksum-at-the-end-of-a-mnemonic-seed

from monero.

The last word is a checksum.

https://monero.stackexchange.com/questions/874/what-is-the-checksum-at-the-end-of-a-mnemonic-seed

Example (for 0-private key):
abbey x24:

The string which we feed to CRC32 will be:
abbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabb
and the result of CRC32 performed on it will be 0xb038cd80 = 2956512640. 2956512640 mod 24 is 16, not 0 (index of abbey is 0, this is right last word for 0-private key).

from monero.

There is no CRC32 involved.
abb is 0. So abbabbabbabb is 0x00000000.

from monero.

There is no CRC32 involved. abb is 0. So abbabbabbabb is 0x00000000.

For WHAT we calculate CRC32? The string "abbabbabb..."?

from monero.

There is no CRC32 involved. abb is 0. So abbabbabbabb is 0x00000000.

In example for "skirting trash phase buckets apology gags sedan coffee vinegar else fifteen pitched idled gorilla siren cucumber urban junk vastness laboratory rift rhino situated taxi" we calculated CRC32 for string "skitraphabucapogagsedcofvinelsfifpitidlgorsircucurbjunvaslabrifrhisittax". This is 1790087523 mod 24 is 3. Ok. But for "abbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabbabb" I can't get 0, only 16 (2956512640 mod 24).

from monero.

It means the 16th word (starts with 0) of the seed is the checksum -> abbey. The checksum can only be abbey because all words from 0 to 23 are abbey.

from monero.

It means the 16th word (starts with 0) of the seed is the checksum -> abbey. The checksum can only be abbey because all words from 0 to 23 are abbey.

Thank you!

from monero.

It turns out that the maximum number of combinations of seed phrases is 1626^24 more than hexes (2^256) by about 7%, i.e. it is better to randomly select 24 words and then get the 25th than to get 24 words out of 64-hexadecimal number...
The maximum of hexadecimal seed is FFFFFFFF_16 x 6 -> 4294967295_10 x 6 -> (1624,807,489)_1626 x 6 -> "zones listen foamy zones listen foamy zones listen foamy zones listen foamy zones listen foamy zones listen foamy zones listen foamy zones listen foamy". And 25th word is zones. Whereas the "maximum" phrase is "zoom"x25...

from monero.

It turns out that the maximum number of combinations of seed phrases is 1626^24 more than hexes (2^256) by about 7%, i.e. it is better to randomly select 24 words and then get the 25th than to get 24 words out of 64-hexadecimal number... The maximum of hexadecimal seed is FFFFFFFF_16 x 6 -> 4294967295_10 x 6 -> (1624,807,489)_1626 x 6 -> "zones listen foamy zones listen foamy zones listen foamy zones listen foamy zones listen foamy zones listen foamy zones listen foamy zones listen foamy". And 25th word is zones. Whereas the "maximum" phrase is "zoom"x25...

It turns out that about 7% of the seeds have one Private spend key and addresses (as pairs, much less common are threes etc.).

from monero.