Questions tagged [check-sum]

5 questions
12
votes
2 answers

What is the checksum at the end of a mnemonic seed?

What is the meaning of the checksum at the end of a mnemonic seed? Is the checksum always a word found earlier in the mnemonic? what is the purpose of it? Can a valid mnemonic seed be created without a checksum?
Sam
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10
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1 answer

Why limit the CRC by a modulo of 24 rather than 1626?

When looking through Monero's source code I was intrigued by the choice of the Mnemonic's 25th word which is defined as follow: words += (' ' + words_store[create_checksum_index(words_store, language->get_unique_prefix_length())]); Which…
Maxithi
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7
votes
2 answers

Why one word is found two times in each seed?

Why one word is found two times in each seed? Is it use as a checksum?
ant Bldel
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2
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0 answers

What is the importance of the 25th word in a mnemonic seed?

Is this additional word important for some reason? And should I need to make sure to write it down or is that optional?
samwellj
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1
vote
1 answer

Generating the checksum word/recomputing the 25th mnemonic word?

I have my favorite 24 words, and I would like to generate the checksum word/25th mnemonic word of a Monero wallet. How can I do that? For instance, in the BTC environment, we have the seedpicker, which allows us to input the 23 words and generate…