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first draft of atheme migration code

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This commit is contained in:
Shivaram Lingamneni 2020-10-02 16:48:37 -04:00
parent c060113c74
commit 7a6413ea2c
25 changed files with 1423 additions and 63 deletions
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20
irc/migrations/legacy.go Normal file
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package migrations
import (
"golang.org/x/crypto/bcrypt"
)
// See the v12-to-v13 schema change. The format of this hash is:
// 30 bytes of global salt, 30 bytes of per-passphrase salt, then the bcrypt hash
func CheckOragonoPassphraseV0(hash, passphrase []byte) error {
globalSalt := hash[:30]
passphraseSalt := hash[30:60]
bcryptHash := hash[60:]
assembledPasswordBytes := make([]byte, 0, 60+len(passphrase)+2)
assembledPasswordBytes = append(assembledPasswordBytes, globalSalt...)
assembledPasswordBytes = append(assembledPasswordBytes, '-')
assembledPasswordBytes = append(assembledPasswordBytes, passphraseSalt...)
assembledPasswordBytes = append(assembledPasswordBytes, '-')
assembledPasswordBytes = append(assembledPasswordBytes, passphrase...)
return bcrypt.CompareHashAndPassword(bcryptHash, assembledPasswordBytes)
}