github.com/karalabe/go-ethereum@v0.8.5/crypto/crypto_test.go (about)

     1  package crypto
     2  
     3  import (
     4  	"bytes"
     5  	"encoding/hex"
     6  	"fmt"
     7  	"testing"
     8  	"time"
     9  
    10  	"github.com/ethereum/go-ethereum/crypto/secp256k1"
    11  	"github.com/ethereum/go-ethereum/ethutil"
    12  )
    13  
    14  // These tests are sanity checks.
    15  // They should ensure that we don't e.g. use Sha3-224 instead of Sha3-256
    16  // and that the sha3 library uses keccak-f permutation.
    17  
    18  func TestSha3(t *testing.T) {
    19  	msg := []byte("abc")
    20  	exp, _ := hex.DecodeString("4e03657aea45a94fc7d47ba826c8d667c0d1e6e33a64a036ec44f58fa12d6c45")
    21  	checkhash(t, "Sha3-256", func(in []byte) []byte { return Sha3(in) }, msg, exp)
    22  }
    23  
    24  func TestSha256(t *testing.T) {
    25  	msg := []byte("abc")
    26  	exp, _ := hex.DecodeString("ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad")
    27  	checkhash(t, "Sha256", Sha256, msg, exp)
    28  }
    29  
    30  func TestRipemd160(t *testing.T) {
    31  	msg := []byte("abc")
    32  	exp, _ := hex.DecodeString("8eb208f7e05d987a9b044a8e98c6b087f15a0bfc")
    33  	checkhash(t, "Ripemd160", Ripemd160, msg, exp)
    34  }
    35  
    36  func checkhash(t *testing.T, name string, f func([]byte) []byte, msg, exp []byte) {
    37  	sum := f(msg)
    38  	if bytes.Compare(exp, sum) != 0 {
    39  		t.Errorf("hash %s returned wrong result.\ngot:  %x\nwant: %x", name, sum, exp)
    40  	}
    41  }
    42  
    43  func BenchmarkSha3(b *testing.B) {
    44  	a := []byte("hello world")
    45  	amount := 1000000
    46  	start := time.Now()
    47  	for i := 0; i < amount; i++ {
    48  		Sha3(a)
    49  	}
    50  
    51  	fmt.Println(amount, ":", time.Since(start))
    52  }
    53  
    54  func Test0Key(t *testing.T) {
    55  	t.Skip()
    56  	key := ethutil.Hex2Bytes("1111111111111111111111111111111111111111111111111111111111111111")
    57  
    58  	p, err := secp256k1.GeneratePubKey(key)
    59  	addr := Sha3(p[1:])[12:]
    60  	fmt.Printf("%x\n", p)
    61  	fmt.Printf("%v %x\n", err, addr)
    62  }
    63  
    64  func TestInvalidSign(t *testing.T) {
    65  	_, err := Sign(make([]byte, 1), nil)
    66  	if err == nil {
    67  		t.Errorf("expected sign with hash 1 byte to error")
    68  	}
    69  
    70  	_, err = Sign(make([]byte, 33), nil)
    71  	if err == nil {
    72  		t.Errorf("expected sign with hash 33 byte to error")
    73  	}
    74  }