1 files changed, 0 insertions, 138 deletions
diff --git a/src/pkg/crypto/rand/rand_unix.go b/src/pkg/crypto/rand/rand_unix.go
deleted file mode 100644
index 1e741fda1..000000000
--- a/src/pkg/crypto/rand/rand_unix.go
+++ /dev/null
@@ -1,138 +0,0 @@
-// Copyright 2010 The Go Authors.  All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build darwin dragonfly freebsd linux nacl netbsd openbsd plan9 solaris
-
-// Unix cryptographically secure pseudorandom number
-// generator.
-
-package rand
-
-import (
-	"bufio"
-	"crypto/aes"
-	"crypto/cipher"
-	"io"
-	"os"
-	"runtime"
-	"sync"
-	"time"
-)
-
-// Easy implementation: read from /dev/urandom.
-// This is sufficient on Linux, OS X, and FreeBSD.
-
-func init() {
-	if runtime.GOOS == "plan9" {
-		Reader = newReader(nil)
-	} else {
-		Reader = &devReader{name: "/dev/urandom"}
-	}
-}
-
-// A devReader satisfies reads by reading the file named name.
-type devReader struct {
-	name string
-	f    io.Reader
-	mu   sync.Mutex
-}
-
-func (r *devReader) Read(b []byte) (n int, err error) {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-	if r.f == nil {
-		f, err := os.Open(r.name)
-		if f == nil {
-			return 0, err
-		}
-		if runtime.GOOS == "plan9" {
-			r.f = f
-		} else {
-			r.f = bufio.NewReader(f)
-		}
-	}
-	return r.f.Read(b)
-}
-
-// Alternate pseudo-random implementation for use on
-// systems without a reliable /dev/urandom.
-
-// newReader returns a new pseudorandom generator that
-// seeds itself by reading from entropy.  If entropy == nil,
-// the generator seeds itself by reading from the system's
-// random number generator, typically /dev/random.
-// The Read method on the returned reader always returns
-// the full amount asked for, or else it returns an error.
-//
-// The generator uses the X9.31 algorithm with AES-128,
-// reseeding after every 1 MB of generated data.
-func newReader(entropy io.Reader) io.Reader {
-	if entropy == nil {
-		entropy = &devReader{name: "/dev/random"}
-	}
-	return &reader{entropy: entropy}
-}
-
-type reader struct {
-	mu                   sync.Mutex
-	budget               int // number of bytes that can be generated
-	cipher               cipher.Block
-	entropy              io.Reader
-	time, seed, dst, key [aes.BlockSize]byte
-}
-
-func (r *reader) Read(b []byte) (n int, err error) {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-	n = len(b)
-
-	for len(b) > 0 {
-		if r.budget == 0 {
-			_, err := io.ReadFull(r.entropy, r.seed[0:])
-			if err != nil {
-				return n - len(b), err
-			}
-			_, err = io.ReadFull(r.entropy, r.key[0:])
-			if err != nil {
-				return n - len(b), err
-			}
-			r.cipher, err = aes.NewCipher(r.key[0:])
-			if err != nil {
-				return n - len(b), err
-			}
-			r.budget = 1 << 20 // reseed after generating 1MB
-		}
-		r.budget -= aes.BlockSize
-
-		// ANSI X9.31 (== X9.17) algorithm, but using AES in place of 3DES.
-		//
-		// single block:
-		// t = encrypt(time)
-		// dst = encrypt(t^seed)
-		// seed = encrypt(t^dst)
-		ns := time.Now().UnixNano()
-		r.time[0] = byte(ns >> 56)
-		r.time[1] = byte(ns >> 48)
-		r.time[2] = byte(ns >> 40)
-		r.time[3] = byte(ns >> 32)
-		r.time[4] = byte(ns >> 24)
-		r.time[5] = byte(ns >> 16)
-		r.time[6] = byte(ns >> 8)
-		r.time[7] = byte(ns)
-		r.cipher.Encrypt(r.time[0:], r.time[0:])
-		for i := 0; i < aes.BlockSize; i++ {
-			r.dst[i] = r.time[i] ^ r.seed[i]
-		}
-		r.cipher.Encrypt(r.dst[0:], r.dst[0:])
-		for i := 0; i < aes.BlockSize; i++ {
-			r.seed[i] = r.time[i] ^ r.dst[i]
-		}
-		r.cipher.Encrypt(r.seed[0:], r.seed[0:])
-
-		m := copy(b, r.dst[0:])
-		b = b[m:]
-	}
-
-	return n, nil
-}