36 lines
915 B
Go
36 lines
915 B
Go
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package sqlite3
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import (
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"bytes"
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"errors"
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"os"
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)
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// sqlite3Header defines the header string used by SQLite 3.
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var sqlite3Header = []byte("SQLite format 3\000")
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// IsEncrypted returns true, if the database with the given filename is
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// encrypted, and false otherwise.
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// If the database header cannot be read properly an error is returned.
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func IsEncrypted(filename string) (bool, error) {
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// open file
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db, err := os.Open(filename)
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if err != nil {
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return false, err
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}
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defer db.Close()
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// read header
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var header [16]byte
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n, err := db.Read(header[:])
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if err != nil {
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return false, err
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}
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if n != len(header) {
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return false, errors.New("go-sqlcipher: could not read full header")
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}
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// SQLCipher encrypts also the header, the file is encrypted if the read
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// header does not equal the header string used by SQLite 3.
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encrypted := !bytes.Equal(header[:], sqlite3Header)
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return encrypted, nil
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}
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