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Diffstat (limited to 'cryptfs/nonce.go')
-rw-r--r--cryptfs/nonce.go42
1 files changed, 0 insertions, 42 deletions
diff --git a/cryptfs/nonce.go b/cryptfs/nonce.go
deleted file mode 100644
index be777fc..0000000
--- a/cryptfs/nonce.go
+++ /dev/null
@@ -1,42 +0,0 @@
-package cryptfs
-
-import (
- "bytes"
- "crypto/rand"
- "encoding/binary"
- "encoding/hex"
- "fmt"
-)
-
-// Get "n" random bytes from /dev/urandom or panic
-func RandBytes(n int) []byte {
- b := make([]byte, n)
- _, err := rand.Read(b)
- if err != nil {
- panic("Failed to read random bytes: " + err.Error())
- }
- return b
-}
-
-// Return a secure random uint64
-func RandUint64() uint64 {
- b := RandBytes(8)
- return binary.BigEndian.Uint64(b)
-}
-
-type nonceGenerator struct {
- lastNonce []byte
- nonceLen int // bytes
-}
-
-// Get a random 96 bit nonce
-func (n *nonceGenerator) Get() []byte {
- nonce := RandBytes(n.nonceLen)
- Debug.Printf("nonceGenerator.Get(): %s\n", hex.EncodeToString(nonce))
- if bytes.Equal(nonce, n.lastNonce) {
- m := fmt.Sprintf("Got the same nonce twice: %s. This should never happen!", hex.EncodeToString(nonce))
- panic(m)
- }
- n.lastNonce = nonce
- return nonce
-}