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177 lines
6.0 KiB
177 lines
6.0 KiB
9 years ago
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// Copyright (c) 2015 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package btcec_test
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import (
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"bytes"
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"encoding/hex"
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"testing"
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"github.com/btcsuite/btcd/btcec"
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)
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func TestGenerateSharedSecret(t *testing.T) {
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privKey1, err := btcec.NewPrivateKey(btcec.S256())
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if err != nil {
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t.Errorf("private key generation error: %s", err)
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return
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}
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privKey2, err := btcec.NewPrivateKey(btcec.S256())
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if err != nil {
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t.Errorf("private key generation error: %s", err)
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return
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}
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secret1 := btcec.GenerateSharedSecret(privKey1, privKey2.PubKey())
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secret2 := btcec.GenerateSharedSecret(privKey2, privKey1.PubKey())
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if !bytes.Equal(secret1, secret2) {
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t.Errorf("ECDH failed, secrets mismatch - first: %x, second: %x",
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secret1, secret2)
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}
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}
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// Test 1: Encryption and decryption
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func TestCipheringBasic(t *testing.T) {
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privkey, err := btcec.NewPrivateKey(btcec.S256())
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if err != nil {
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t.Fatal("failed to generate private key")
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}
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in := []byte("Hey there dude. How are you doing? This is a test.")
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out, err := btcec.Encrypt(privkey.PubKey(), in)
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if err != nil {
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t.Fatal("failed to encrypt:", err)
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}
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dec, err := btcec.Decrypt(privkey, out)
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if err != nil {
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t.Fatal("failed to decrypt:", err)
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}
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if !bytes.Equal(in, dec) {
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t.Error("decrypted data doesn't match original")
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}
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}
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// Test 2: Byte compatibility with Pyelliptic
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func TestCiphering(t *testing.T) {
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pb, _ := hex.DecodeString("fe38240982f313ae5afb3e904fb8215fb11af1200592b" +
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"fca26c96c4738e4bf8f")
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privkey, _ := btcec.PrivKeyFromBytes(btcec.S256(), pb)
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in := []byte("This is just a test.")
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out, _ := hex.DecodeString("b0d66e5adaa5ed4e2f0ca68e17b8f2fc02ca002009e3" +
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"3487e7fa4ab505cf34d98f131be7bd258391588ca7804acb30251e71a04e0020ecf" +
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"df0f84608f8add82d7353af780fbb28868c713b7813eb4d4e61f7b75d7534dd9856" +
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"9b0ba77cf14348fcff80fee10e11981f1b4be372d93923e9178972f69937ec850ed" +
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"6c3f11ff572ddd5b2bedf9f9c0b327c54da02a28fcdce1f8369ffec")
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dec, err := btcec.Decrypt(privkey, out)
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if err != nil {
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t.Fatal("failed to decrypt:", err)
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}
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if !bytes.Equal(in, dec) {
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t.Error("decrypted data doesn't match original")
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}
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}
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func TestCipheringErrors(t *testing.T) {
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privkey, err := btcec.NewPrivateKey(btcec.S256())
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if err != nil {
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t.Fatal("failed to generate private key")
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}
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tests1 := []struct {
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ciphertext []byte // input ciphertext
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}{
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{bytes.Repeat([]byte{0x00}, 133)}, // errInputTooShort
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{bytes.Repeat([]byte{0x00}, 134)}, // errUnsupportedCurve
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{bytes.Repeat([]byte{0x02, 0xCA}, 134)}, // errInvalidXLength
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{bytes.Repeat([]byte{0x02, 0xCA, 0x00, 0x20}, 134)}, // errInvalidYLength
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{[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // IV
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x02, 0xCA, 0x00, 0x20, // curve and X length
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // X
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x20, // Y length
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Y
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ciphertext
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // MAC
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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}}, // invalid pubkey
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{[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // IV
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x02, 0xCA, 0x00, 0x20, // curve and X length
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0x11, 0x5C, 0x42, 0xE7, 0x57, 0xB2, 0xEF, 0xB7, // X
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0x67, 0x1C, 0x57, 0x85, 0x30, 0xEC, 0x19, 0x1A,
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0x13, 0x59, 0x38, 0x1E, 0x6A, 0x71, 0x12, 0x7A,
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0x9D, 0x37, 0xC4, 0x86, 0xFD, 0x30, 0xDA, 0xE5,
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0x00, 0x20, // Y length
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0x7E, 0x76, 0xDC, 0x58, 0xF6, 0x93, 0xBD, 0x7E, // Y
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0x70, 0x10, 0x35, 0x8C, 0xE6, 0xB1, 0x65, 0xE4,
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0x83, 0xA2, 0x92, 0x10, 0x10, 0xDB, 0x67, 0xAC,
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0x11, 0xB1, 0xB5, 0x1B, 0x65, 0x19, 0x53, 0xD2,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ciphertext
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// padding not aligned to 16 bytes
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // MAC
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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}}, // errInvalidPadding
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{[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // IV
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x02, 0xCA, 0x00, 0x20, // curve and X length
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0x11, 0x5C, 0x42, 0xE7, 0x57, 0xB2, 0xEF, 0xB7, // X
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0x67, 0x1C, 0x57, 0x85, 0x30, 0xEC, 0x19, 0x1A,
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0x13, 0x59, 0x38, 0x1E, 0x6A, 0x71, 0x12, 0x7A,
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0x9D, 0x37, 0xC4, 0x86, 0xFD, 0x30, 0xDA, 0xE5,
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0x00, 0x20, // Y length
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0x7E, 0x76, 0xDC, 0x58, 0xF6, 0x93, 0xBD, 0x7E, // Y
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0x70, 0x10, 0x35, 0x8C, 0xE6, 0xB1, 0x65, 0xE4,
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0x83, 0xA2, 0x92, 0x10, 0x10, 0xDB, 0x67, 0xAC,
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0x11, 0xB1, 0xB5, 0x1B, 0x65, 0x19, 0x53, 0xD2,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ciphertext
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // MAC
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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}}, // ErrInvalidMAC
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}
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for i, test := range tests1 {
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_, err = btcec.Decrypt(privkey, test.ciphertext)
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if err == nil {
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t.Errorf("Decrypt #%d did not get error", i)
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}
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}
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// test error from removePKCSPadding
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tests2 := []struct {
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in []byte // input data
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}{
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{bytes.Repeat([]byte{0x11}, 17)},
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{bytes.Repeat([]byte{0x07}, 15)},
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}
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for i, test := range tests2 {
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_, err = btcec.TstRemovePKCSPadding(test.in)
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if err == nil {
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t.Errorf("removePKCSPadding #%d did not get error", i)
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}
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}
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}
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