Encrypted overlay filesystems implementation for Android.
Also available on GitHub: https://github.com/hardcore-sushi/DroidFS
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32 lines
609 B
32 lines
609 B
package cryptocore |
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import ( |
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"crypto/rand" |
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"encoding/binary" |
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"log" |
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) |
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// RandBytes gets "n" random bytes from /dev/urandom or panics |
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func RandBytes(n int) []byte { |
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b := make([]byte, n) |
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_, err := rand.Read(b) |
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if err != nil { |
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log.Panic("Failed to read random bytes: " + err.Error()) |
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} |
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return b |
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} |
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// RandUint64 returns a secure random uint64 |
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func RandUint64() uint64 { |
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b := RandBytes(8) |
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return binary.BigEndian.Uint64(b) |
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} |
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type nonceGenerator struct { |
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nonceLen int // bytes |
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} |
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// Get a random "nonceLen"-byte nonce |
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func (n *nonceGenerator) Get() []byte { |
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return randPrefetcher.read(n.nonceLen) |
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}
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