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-rw-r--r--common/csrand/csrand.go101
1 files changed, 0 insertions, 101 deletions
diff --git a/common/csrand/csrand.go b/common/csrand/csrand.go
deleted file mode 100644
index 45849d3..0000000
--- a/common/csrand/csrand.go
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (c) 2014, Yawning Angel <yawning at torproject dot org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-// Package csrand implements the math/rand interface over crypto/rand, along
-// with some utility functions for common random number/byte related tasks.
-//
-// Not all of the convinience routines are replicated, only those that are
-// immediately useful. The Rand variable provides access to the full math/rand
-// API.
-package csrand
-
-import (
- cryptRand "crypto/rand"
- "encoding/binary"
- "fmt"
- "io"
- "math/rand"
-)
-
-var (
- csRandSourceInstance csRandSource
-
- // Rand is a math/rand instance backed by crypto/rand CSPRNG.
- Rand = rand.New(csRandSourceInstance)
-)
-
-type csRandSource struct {
- // This does not keep any state as it is backed by crypto/rand.
-}
-
-func (r csRandSource) Int63() int64 {
- var src [8]byte
- if err := Bytes(src[:]); err != nil {
- panic(err)
- }
- val := binary.BigEndian.Uint64(src[:])
- val &= (1<<63 - 1)
-
- return int64(val)
-}
-
-func (r csRandSource) Seed(seed int64) {
- // No-op.
-}
-
-// Intn returns, as a int, a pseudo random number in [0, n).
-func Intn(n int) int {
- return Rand.Intn(n)
-}
-
-// Float64 returns, as a float64, a pesudo random number in [0.0,1.0).
-func Float64() float64 {
- return Rand.Float64()
-}
-
-// IntRange returns a uniformly distributed int [min, max].
-func IntRange(min, max int) int {
- if max < min {
- panic(fmt.Sprintf("IntRange: min > max (%d, %d)", min, max))
- }
-
- r := (max + 1) - min
- ret := Rand.Intn(r)
- return ret + min
-}
-
-// Bytes fills the slice with random data.
-func Bytes(buf []byte) error {
- if _, err := io.ReadFull(cryptRand.Reader, buf); err != nil {
- return err
- }
-
- return nil
-}
-
-// Reader is a alias of rand.Reader.
-var Reader = cryptRand.Reader