sneak
02386a6ff1
Move to Go 1.26, embed the wordlist from english.txt, add ValidateWordlist, NormalizeWordlist, and GenerateMnemonic with tests, and remove the old root-level CLI that used the previous module path.
43 lines
1.4 KiB
Go
43 lines
1.4 KiB
Go
// Package bip39wordlist provides the BIP39 English wordlist and helpers for
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// validating, normalizing, and generating BIP39 mnemonic phrases.
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//
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// The wordlist is embedded in the binary from english.txt and parsed once
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// at package initialization. The mnemonic helpers accept phrases in any
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// letter case and with any whitespace between words; NormalizeWordlist
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// returns the canonical lowercase, single-space-separated form that BIP39
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// seed derivation requires, and refuses anything that is not a valid
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// mnemonic.
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package bip39wordlist
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import (
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_ "embed"
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"slices"
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"strings"
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)
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// WordlistSize is the number of words in a BIP39 wordlist.
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const WordlistSize = 2048
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//go:embed english.txt
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var englishWordlistData string
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// WordlistEnglish is the BIP39 English wordlist, one entry per word, in
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// the canonical (sorted) BIP39 order. Callers must not modify it.
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//
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//nolint:gochecknoglobals // static lookup table parsed once from embedded data
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var WordlistEnglish = strings.Fields(englishWordlistData)
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// Wordlist is the default wordlist, which is WordlistEnglish. Callers must
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// not modify it.
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//
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//nolint:gochecknoglobals // static lookup table, alias of WordlistEnglish
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var Wordlist = WordlistEnglish
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// Contains reports whether word is in the English wordlist. The comparison
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// is exact, so word must already be lowercase.
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func Contains(word string) bool {
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_, found := slices.BinarySearch(WordlistEnglish, word)
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return found
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}
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