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authorGustav Simonsson <gustav.simonsson@gmail.com>2015-02-14 01:22:36 +0800
committerGustav Simonsson <gustav.simonsson@gmail.com>2015-02-14 01:25:25 +0800
commitf35d62b75977231bb45d2e298c3f39744c875e67 (patch)
treeaf493dde786b924d358d5b36a3bf3f624bd0e1e9 /crypto
parent39434e383b9e6fee30371afd5a9841de75671f56 (diff)
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Remove secp256_rand.go and update tests
Diffstat (limited to 'crypto')
-rw-r--r--crypto/secp256k1/secp256_rand.go97
-rw-r--r--crypto/secp256k1/secp256_test.go21
2 files changed, 11 insertions, 107 deletions
diff --git a/crypto/secp256k1/secp256_rand.go b/crypto/secp256k1/secp256_rand.go
deleted file mode 100644
index bb10025fc..000000000
--- a/crypto/secp256k1/secp256_rand.go
+++ /dev/null
@@ -1,97 +0,0 @@
-package secp256k1
-
-import (
- crand "crypto/rand"
- "io"
- mrand "math/rand"
- "os"
- "strings"
- "time"
-)
-
-/*
-Note:
-
-- On windows cryto/rand uses CrytoGenRandom which uses RC4 which is insecure
-- Android random number generator is known to be insecure.
-- Linux uses /dev/urandom , which is thought to be secure and uses entropy pool
-
-Therefore the output is salted.
-*/
-
-//finalizer from MurmerHash3
-func mmh3f(key uint64) uint64 {
- key ^= key >> 33
- key *= 0xff51afd7ed558ccd
- key ^= key >> 33
- key *= 0xc4ceb9fe1a85ec53
- key ^= key >> 33
- return key
-}
-
-//knuth hash
-func knuth_hash(in []byte) uint64 {
- var acc uint64 = 3074457345618258791
- for i := 0; i < len(in); i++ {
- acc += uint64(in[i])
- acc *= 3074457345618258799
- }
- return acc
-}
-
-var _rand *mrand.Rand
-
-func init() {
- var seed1 uint64 = mmh3f(uint64(time.Now().UnixNano()))
- var seed2 uint64 = knuth_hash([]byte(strings.Join(os.Environ(), "")))
- var seed3 uint64 = mmh3f(uint64(os.Getpid()))
-
- _rand = mrand.New(mrand.NewSource(int64(seed1 ^ seed2 ^ seed3)))
-}
-
-func saltByte(n int) []byte {
- buff := make([]byte, n)
- for i := 0; i < len(buff); i++ {
- var v uint64 = uint64(_rand.Int63())
- var b byte
- for j := 0; j < 8; j++ {
- b ^= byte(v & 0xff)
- v = v >> 8
- }
- buff[i] = b
- }
- return buff
-}
-
-//On Unix-like systems, Reader reads from /dev/urandom.
-//On Windows systems, Reader uses the CryptGenRandom API.
-
-//use entropy pool etc and cryptographic random number generator
-//mix in time
-//mix in mix in cpu cycle count
-func RandByte(n int) []byte {
- buff := make([]byte, n)
- ret, err := io.ReadFull(crand.Reader, buff)
- if len(buff) != ret || err != nil {
- return nil
- }
-
- buff2 := saltByte(n)
- for i := 0; i < n; i++ {
- buff[i] ^= buff2[2]
- }
- return buff
-}
-
-/*
- On Unix-like systems, Reader reads from /dev/urandom.
- On Windows systems, Reader uses the CryptGenRandom API.
-*/
-func RandByteWeakCrypto(n int) []byte {
- buff := make([]byte, n)
- ret, err := io.ReadFull(crand.Reader, buff)
- if len(buff) != ret || err != nil {
- return nil
- }
- return buff
-}
diff --git a/crypto/secp256k1/secp256_test.go b/crypto/secp256k1/secp256_test.go
index 468c50db9..5e657cd72 100644
--- a/crypto/secp256k1/secp256_test.go
+++ b/crypto/secp256k1/secp256_test.go
@@ -3,6 +3,7 @@ package secp256k1
import (
"bytes"
"fmt"
+ "github.com/ethereum/go-ethereum/crypto/randentropy"
"log"
"testing"
)
@@ -12,7 +13,7 @@ const SigSize = 65 //64+1
func Test_Secp256_00(t *testing.T) {
- var nonce []byte = RandByte(32) //going to get bitcoins stolen!
+ var nonce []byte = randentropy.GetEntropyMixed(32) //going to get bitcoins stolen!
if len(nonce) != 32 {
t.Fatal()
@@ -50,7 +51,7 @@ func Test_Secp256_01(t *testing.T) {
//test size of messages
func Test_Secp256_02s(t *testing.T) {
pubkey, seckey := GenerateKeyPair()
- msg := RandByte(32)
+ msg := randentropy.GetEntropyMixed(32)
sig, _ := Sign(msg, seckey)
CompactSigTest(sig)
if sig == nil {
@@ -73,7 +74,7 @@ func Test_Secp256_02s(t *testing.T) {
//test signing message
func Test_Secp256_02(t *testing.T) {
pubkey1, seckey := GenerateKeyPair()
- msg := RandByte(32)
+ msg := randentropy.GetEntropyMixed(32)
sig, _ := Sign(msg, seckey)
if sig == nil {
t.Fatal("Signature nil")
@@ -96,7 +97,7 @@ func Test_Secp256_02(t *testing.T) {
//test pubkey recovery
func Test_Secp256_02a(t *testing.T) {
pubkey1, seckey1 := GenerateKeyPair()
- msg := RandByte(32)
+ msg := randentropy.GetEntropyMixed(32)
sig, _ := Sign(msg, seckey1)
if sig == nil {
@@ -125,7 +126,7 @@ func Test_Secp256_02a(t *testing.T) {
func Test_Secp256_03(t *testing.T) {
_, seckey := GenerateKeyPair()
for i := 0; i < TESTS; i++ {
- msg := RandByte(32)
+ msg := randentropy.GetEntropyMixed(32)
sig, _ := Sign(msg, seckey)
CompactSigTest(sig)
@@ -141,7 +142,7 @@ func Test_Secp256_03(t *testing.T) {
func Test_Secp256_04(t *testing.T) {
for i := 0; i < TESTS; i++ {
pubkey1, seckey := GenerateKeyPair()
- msg := RandByte(32)
+ msg := randentropy.GetEntropyMixed(32)
sig, _ := Sign(msg, seckey)
CompactSigTest(sig)
@@ -164,7 +165,7 @@ func Test_Secp256_04(t *testing.T) {
// -SIPA look at this
func randSig() []byte {
- sig := RandByte(65)
+ sig := randentropy.GetEntropyMixed(65)
sig[32] &= 0x70
sig[64] %= 4
return sig
@@ -172,7 +173,7 @@ func randSig() []byte {
func Test_Secp256_06a_alt0(t *testing.T) {
pubkey1, seckey := GenerateKeyPair()
- msg := RandByte(32)
+ msg := randentropy.GetEntropyMixed(32)
sig, _ := Sign(msg, seckey)
if sig == nil {
@@ -203,12 +204,12 @@ func Test_Secp256_06a_alt0(t *testing.T) {
func Test_Secp256_06b(t *testing.T) {
pubkey1, seckey := GenerateKeyPair()
- msg := RandByte(32)
+ msg := randentropy.GetEntropyMixed(32)
sig, _ := Sign(msg, seckey)
fail_count := 0
for i := 0; i < TESTS; i++ {
- msg = RandByte(32)
+ msg = randentropy.GetEntropyMixed(32)
pubkey2, _ := RecoverPubkey(msg, sig)
if bytes.Equal(pubkey1, pubkey2) == true {
t.Fail()