47 lines
1.5 KiB
Go
47 lines
1.5 KiB
Go
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package generator
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import (
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"bytes"
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"errors"
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"github.com/ethereum/go-ethereum/accounts/keystore"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/status-im/status-go/extkeys"
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)
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var (
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// ErrInvalidKeystoreExtendedKey is returned when the decrypted keystore file
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// contains some old Status keys.
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// The old version used to store the BIP44 account at index 0 as PrivateKey,
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// and the BIP44 account at index 1 as ExtendedKey.
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// The current version stores the same key as PrivateKey and ExtendedKey.
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ErrInvalidKeystoreExtendedKey = errors.New("PrivateKey and ExtendedKey are different")
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ErrInvalidMnemonicPhraseLength = errors.New("invalid mnemonic phrase length; valid lengths are 12, 15, 18, 21, and 24")
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)
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// ValidateKeystoreExtendedKey validates the keystore keys, checking that
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// ExtendedKey is the extended key of PrivateKey.
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func ValidateKeystoreExtendedKey(key *keystore.Key) error {
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if key.ExtendedKey.IsZeroed() {
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return nil
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}
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if !bytes.Equal(crypto.FromECDSA(key.PrivateKey), crypto.FromECDSA(key.ExtendedKey.ToECDSA())) {
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return ErrInvalidKeystoreExtendedKey
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}
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return nil
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}
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// MnemonicPhraseLengthToEntropyStrength returns the entropy strength for a given mnemonic length
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func MnemonicPhraseLengthToEntropyStrength(length int) (extkeys.EntropyStrength, error) {
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if length < 12 || length > 24 || length%3 != 0 {
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return 0, ErrInvalidMnemonicPhraseLength
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}
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bitsLength := length * 11
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checksumLength := bitsLength % 32
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return extkeys.EntropyStrength(bitsLength - checksumLength), nil
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}
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