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74 lines
2.1 KiB
Go
74 lines
2.1 KiB
Go
4 years ago
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package codec
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import (
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"math/big"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestDiffieHellman(t *testing.T) {
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key1, err := GenerateKey()
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assert.Nil(t, err)
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key2, err := GenerateKey()
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assert.Nil(t, err)
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pubKey1, err := ComputeKey(key1.PubKey, key2.PriKey)
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assert.Nil(t, err)
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pubKey2, err := ComputeKey(key2.PubKey, key1.PriKey)
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assert.Nil(t, err)
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assert.Equal(t, pubKey1, pubKey2)
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}
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func TestDiffieHellman1024(t *testing.T) {
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old := p
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p, _ = new(big.Int).SetString("F488FD584E49DBCD20B49DE49107366B336C380D451D0F7C88B31C7C5B2D8EF6F3C923C043F0A55B188D8EBB558CB85D38D334FD7C175743A31D186CDE33212CB52AFF3CE1B1294018118D7C84A70A72D686C40319C807297ACA950CD9969FABD00A509B0246D3083D66A45D419F9C7CBD894B221926BAABA25EC355E92F78C7", 16)
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defer func() {
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p = old
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}()
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key1, err := GenerateKey()
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assert.Nil(t, err)
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key2, err := GenerateKey()
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assert.Nil(t, err)
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pubKey1, err := ComputeKey(key1.PubKey, key2.PriKey)
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assert.Nil(t, err)
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pubKey2, err := ComputeKey(key2.PubKey, key1.PriKey)
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assert.Nil(t, err)
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assert.Equal(t, pubKey1, pubKey2)
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}
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func TestDiffieHellmanMiddleManAttack(t *testing.T) {
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key1, err := GenerateKey()
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assert.Nil(t, err)
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keyMiddle, err := GenerateKey()
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assert.Nil(t, err)
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key2, err := GenerateKey()
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assert.Nil(t, err)
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const aesByteLen = 32
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pubKey1, err := ComputeKey(keyMiddle.PubKey, key1.PriKey)
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assert.Nil(t, err)
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src := []byte(`hello, world!`)
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encryptedSrc, err := EcbEncrypt(pubKey1.Bytes()[:aesByteLen], src)
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assert.Nil(t, err)
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pubKeyMiddle, err := ComputeKey(key1.PubKey, keyMiddle.PriKey)
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assert.Nil(t, err)
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decryptedSrc, err := EcbDecrypt(pubKeyMiddle.Bytes()[:aesByteLen], encryptedSrc)
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assert.Nil(t, err)
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assert.Equal(t, string(src), string(decryptedSrc))
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pubKeyMiddle, err = ComputeKey(key2.PubKey, keyMiddle.PriKey)
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assert.Nil(t, err)
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encryptedSrc, err = EcbEncrypt(pubKeyMiddle.Bytes()[:aesByteLen], decryptedSrc)
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assert.Nil(t, err)
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pubKey2, err := ComputeKey(keyMiddle.PubKey, key2.PriKey)
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assert.Nil(t, err)
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decryptedSrc, err = EcbDecrypt(pubKey2.Bytes()[:aesByteLen], encryptedSrc)
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assert.Nil(t, err)
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assert.Equal(t, string(src), string(decryptedSrc))
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}
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