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-rw-r--r--cryptfs/kdf.go54
1 files changed, 0 insertions, 54 deletions
diff --git a/cryptfs/kdf.go b/cryptfs/kdf.go
deleted file mode 100644
index e958413..0000000
--- a/cryptfs/kdf.go
+++ /dev/null
@@ -1,54 +0,0 @@
-package cryptfs
-
-import (
- "fmt"
- "golang.org/x/crypto/scrypt"
- "math"
- "os"
-)
-
-const (
- // 1 << 16 uses 64MB of memory,
- // takes 4 seconds on my Atom Z3735F netbook
- SCRYPT_DEFAULT_LOGN = 16
-)
-
-type scryptKdf struct {
- Salt []byte
- N int
- R int
- P int
- KeyLen int
-}
-
-func NewScryptKdf(logN int) scryptKdf {
- var s scryptKdf
- s.Salt = RandBytes(KEY_LEN)
- if logN <= 0 {
- s.N = 1 << SCRYPT_DEFAULT_LOGN
- } else {
- if logN < 10 {
- fmt.Println("Error: scryptn below 10 is too low to make sense. Aborting.")
- os.Exit(1)
- }
- s.N = 1 << uint32(logN)
- }
- s.R = 8 // Always 8
- s.P = 1 // Always 1
- s.KeyLen = KEY_LEN
- return s
-}
-
-func (s *scryptKdf) DeriveKey(pw string) []byte {
- k, err := scrypt.Key([]byte(pw), s.Salt, s.N, s.R, s.P, s.KeyLen)
- if err != nil {
- panic(fmt.Sprintf("DeriveKey failed: %s", err.Error()))
- }
- return k
-}
-
-// LogN - N is saved as 2^LogN, but LogN is much easier to work with.
-// This function gives you LogN = Log2(N).
-func (s *scryptKdf) LogN() int {
- return int(math.Log2(float64(s.N)) + 0.5)
-}