mirror of https://github.com/ergochat/ergo.git
21 lines
838 B
Go
21 lines
838 B
Go
package migrations
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import (
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"golang.org/x/crypto/bcrypt"
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)
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// See the v12-to-v13 schema change. The format of this hash is:
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// 30 bytes of global salt, 30 bytes of per-passphrase salt, then the bcrypt hash
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func CheckOragonoPassphraseV0(hash, passphrase []byte) error {
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globalSalt := hash[:30]
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passphraseSalt := hash[30:60]
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bcryptHash := hash[60:]
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assembledPasswordBytes := make([]byte, 0, 60+len(passphrase)+2)
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assembledPasswordBytes = append(assembledPasswordBytes, globalSalt...)
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assembledPasswordBytes = append(assembledPasswordBytes, '-')
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assembledPasswordBytes = append(assembledPasswordBytes, passphraseSalt...)
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assembledPasswordBytes = append(assembledPasswordBytes, '-')
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assembledPasswordBytes = append(assembledPasswordBytes, passphrase...)
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return bcrypt.CompareHashAndPassword(bcryptHash, assembledPasswordBytes)
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}
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