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https://github.com/debauchee/barrier.git
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unit tests for IV change.
This commit is contained in:
parent
323285a931
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23998fc06c
@ -154,7 +154,7 @@ CClient::connect()
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if (s_cryptoEnabled) {
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CCryptoStream* cryptoStream = new CCryptoStream(*EVENTQUEUE, m_stream, true);
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cryptoStream->setKeyWithIV(g_key, sizeof(g_key), g_iv);
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cryptoStream->setKeyWithIv(g_key, sizeof(g_key), g_iv);
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m_stream = cryptoStream;
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}
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@ -151,7 +151,7 @@ CClientListener::handleClientConnecting(const CEvent&, void*)
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if (s_cryptoEnabled) {
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CCryptoStream* cryptoStream = new CCryptoStream(*EVENTQUEUE, stream, true);
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cryptoStream->setKeyWithIV(g_key, sizeof(g_key), g_iv);
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cryptoStream->setKeyWithIv(g_key, sizeof(g_key), g_iv);
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stream = cryptoStream;
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}
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@ -20,7 +20,7 @@
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#include <sstream>
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#include <string>
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using namespace CryptoPP;
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using namespace CryptoPP;
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CCryptoStream::CCryptoStream(IEventQueue& eventQueue, synergy::IStream* stream, bool adoptStream) :
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CStreamFilter(eventQueue, stream, adoptStream),
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@ -73,9 +73,11 @@ CCryptoStream::write(const void* in, UInt32 n)
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}
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void
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CCryptoStream::setKeyWithIV(const byte* key, size_t length, const byte* iv)
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CCryptoStream::setKeyWithIv(const byte* key, size_t length, const byte* iv)
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{
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LOG((CLOG_DEBUG "crypto: key=%s (%i) iv=%s", key, length, iv));
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logBuffer("iv", key, length);
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logBuffer("key", iv, CRYPTO_IV_SIZE);
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m_encryption.SetKeyWithIV(key, length, iv);
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m_decryption.SetKeyWithIV(key, length, iv);
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@ -84,13 +86,20 @@ CCryptoStream::setKeyWithIV(const byte* key, size_t length, const byte* iv)
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}
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void
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CCryptoStream::setIV(const byte* iv)
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CCryptoStream::setIv(const byte* iv)
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{
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assert(m_key != NULL);
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LOG((CLOG_DEBUG "crypto: new iv=%s", iv));
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logBuffer("iv", iv, CRYPTO_IV_SIZE);
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m_encryption.SetKeyWithIV(m_key, m_keyLength, iv);
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m_decryption.SetKeyWithIV(m_key, m_keyLength, iv);
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}
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void
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CCryptoStream::newIv(byte* out)
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{
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m_autoSeedRandomPool.GenerateBlock(out, CRYPTO_IV_SIZE);
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setIv(out);
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}
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void
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CCryptoStream::logBuffer(const char* name, const byte* buf, int length)
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@ -19,9 +19,12 @@
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#include "BasicTypes.h"
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#include "CStreamFilter.h"
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#include "cryptopp562/gcm.h"
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#include "cryptopp562/modes.h"
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#include "cryptopp562/aes.h"
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#include <cryptopp562/gcm.h>
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#include <cryptopp562/modes.h>
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#include <cryptopp562/aes.h>
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#include <cryptopp562/osrng.h>
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#define CRYPTO_IV_SIZE CryptoPP::AES::BLOCKSIZE
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//! Bidirectional encrypted stream
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/*!
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@ -49,10 +52,17 @@ public:
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virtual void write(const void* in, UInt32 n);
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//! Set the key and IV
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void setKeyWithIV(const byte* key, size_t length, const byte* iv);
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void setKeyWithIv(const byte* key, size_t length, const byte* iv);
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//! Set the IV
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void setIV(const byte* iv);
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void setIv(const byte* iv);
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//! Get a new IV
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/*!
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Writes a new IV to the \c out buffer, and also uses the IV for further
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crypto.
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*/
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void newIv(byte* out);
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private:
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// TODO: allow user to change the block cypher mode.
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@ -71,7 +81,8 @@ private:
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//CryptoPP::CTR_Mode<CryptoPP::AES>::Decryption m_decryption;
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void logBuffer(const char* name, const byte* buf, int length);
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const byte* m_key;
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size_t m_keyLength;
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CryptoPP::AutoSeededRandomPool m_autoSeedRandomPool;
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};
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@ -26,25 +26,34 @@ using ::testing::Invoke;
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using namespace std;
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void write_assertWrite(const void* in, UInt32 n);
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UInt8 g_write_buffer[4];
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void write_mockWrite(const void* in, UInt32 n);
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UInt8 g_read_buffer[4];
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UInt8 read_mockRead(void* out, UInt32 n);
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void write4Read1_mockWrite(const void* in, UInt32 n);
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UInt8 write4Read1_mockRead(void* out, UInt32 n);
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void write1Read4_mockWrite(const void* in, UInt32 n);
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UInt8 write1Read4_mockRead(void* out, UInt32 n);
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void readWriteIVChanged_mockWrite(const void* in, UInt32 n);
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UInt8 readWriteIVChanged_mockRead(void* out, UInt32 n);
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UInt8 g_write4Read1_buffer[4];
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UInt32 g_write4Read1_bufferIndex = 0;
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void write4Read1_mockWrite(const void* in, UInt32 n);
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UInt8 write4Read1_mockRead(void* out, UInt32 n);
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UInt8 g_write1Read4_buffer[4];
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UInt32 g_write1Read4_bufferIndex = 0;
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void write1Read4_mockWrite(const void* in, UInt32 n);
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UInt8 write1Read4_mockRead(void* out, UInt32 n);
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UInt8 g_readWriteIVChanged_buffer[4];
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UInt8 g_readWriteIvChanged_buffer[4];
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UInt32 g_readWriteIvChangeTrigger_writeBufferIndex = 0;
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UInt32 g_readWriteIvChangeTrigger_readBufferIndex = 0;
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void readWriteIvChanged_mockWrite(const void* in, UInt32 n);
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UInt8 readWriteIvChanged_mockRead(void* out, UInt32 n);
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UInt8 g_readWriteIvChangeTrigger_buffer[4 + 4 + 16]; // abcd, DCIV, 16-byte IV
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void readWriteIvChangeTrigger_mockWrite(const void* in, UInt32 n);
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UInt8 readWriteIvChangeTrigger_mockRead(void* out, UInt32 n);
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const byte g_key[] = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"; // +\0, 32-byte/256-bit key.
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const byte g_iv[] = "bbbbbbbbbbbbbbb"; // +\0, AES block size = 16
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const byte g_iv[] = "bbbbbbbbbbbbbb"; // +\0, AES block size = 16
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TEST(CCryptoTests, write)
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{
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@ -58,7 +67,7 @@ TEST(CCryptoTests, write)
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CMockEventQueue eventQueue;
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CMockStream innerStream(eventQueue);
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ON_CALL(innerStream, write(_, _)).WillByDefault(Invoke(write_assertWrite));
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ON_CALL(innerStream, write(_, _)).WillByDefault(Invoke(write_mockWrite));
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EXPECT_CALL(innerStream, write(_, _)).Times(1);
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EXPECT_CALL(innerStream, getEventTarget()).Times(3);
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EXPECT_CALL(eventQueue, removeHandlers(_)).Times(1);
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@ -66,8 +75,13 @@ TEST(CCryptoTests, write)
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EXPECT_CALL(eventQueue, removeHandler(_, _)).Times(1);
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CCryptoStream cs(eventQueue, &innerStream, false);
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cs.setKeyWithIV(g_key, sizeof(g_key), g_iv);
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cs.setKeyWithIv(g_key, sizeof(g_key), g_iv);
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cs.write(buffer, size);
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EXPECT_EQ(254, g_write_buffer[0]);
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EXPECT_EQ(44, g_write_buffer[1]);
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EXPECT_EQ(187, g_write_buffer[2]);
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EXPECT_EQ(253, g_write_buffer[3]);
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}
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TEST(CCryptoTests, read)
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@ -83,8 +97,13 @@ TEST(CCryptoTests, read)
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EXPECT_CALL(eventQueue, removeHandler(_, _)).Times(1);
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CCryptoStream cs(eventQueue, &innerStream, false);
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cs.setKeyWithIV(g_key, sizeof(g_key), g_iv);
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cs.setKeyWithIv(g_key, sizeof(g_key), g_iv);
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g_read_buffer[0] = 254;
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g_read_buffer[1] = 44;
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g_read_buffer[2] = 187;
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g_read_buffer[3] = 253;
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const UInt32 size = 4;
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UInt8* buffer = new UInt8[size];
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cs.read(buffer, size);
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@ -110,7 +129,7 @@ TEST(CCryptoTests, write4Read1)
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EXPECT_CALL(eventQueue, removeHandler(_, _)).Times(2);
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CCryptoStream cs1(eventQueue, &innerStream, false);
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cs1.setKeyWithIV(g_key, sizeof(g_key), g_iv);
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cs1.setKeyWithIv(g_key, sizeof(g_key), g_iv);
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cs1.write("a", 1);
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cs1.write("b", 1);
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@ -118,7 +137,7 @@ TEST(CCryptoTests, write4Read1)
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cs1.write("d", 1);
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CCryptoStream cs2(eventQueue, &innerStream, false);
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cs2.setKeyWithIV(g_key, sizeof(g_key), g_iv);
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cs2.setKeyWithIv(g_key, sizeof(g_key), g_iv);
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UInt8 buffer[4];
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cs2.read(buffer, 4);
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@ -144,7 +163,7 @@ TEST(CCryptoTests, write1Read4)
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EXPECT_CALL(eventQueue, removeHandler(_, _)).Times(2);
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CCryptoStream cs1(eventQueue, &innerStream, false);
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cs1.setKeyWithIV(g_key, sizeof(g_key), g_iv);
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cs1.setKeyWithIv(g_key, sizeof(g_key), g_iv);
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UInt8 bufferIn[4];
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bufferIn[0] = 'a';
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@ -154,7 +173,7 @@ TEST(CCryptoTests, write1Read4)
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cs1.write(bufferIn, 4);
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CCryptoStream cs2(eventQueue, &innerStream, false);
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cs2.setKeyWithIV(g_key, sizeof(g_key), g_iv);
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cs2.setKeyWithIv(g_key, sizeof(g_key), g_iv);
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UInt8 bufferOut[4];
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cs2.read(&bufferOut[0], 1);
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@ -168,15 +187,15 @@ TEST(CCryptoTests, write1Read4)
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EXPECT_EQ('d', bufferOut[3]);
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}
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TEST(CCryptoTests, readWriteIVChanged)
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TEST(CCryptoTests, readWriteIvChanged)
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{
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CMockEventQueue eventQueue;
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CMockStream innerStream(eventQueue);
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ON_CALL(innerStream, write(_, _)).WillByDefault(Invoke(readWriteIVChanged_mockWrite));
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ON_CALL(innerStream, read(_, _)).WillByDefault(Invoke(readWriteIVChanged_mockRead));
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EXPECT_CALL(innerStream, write(_, _)).Times(1);
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EXPECT_CALL(innerStream, read(_, _)).Times(1);
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ON_CALL(innerStream, write(_, _)).WillByDefault(Invoke(readWriteIvChanged_mockWrite));
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ON_CALL(innerStream, read(_, _)).WillByDefault(Invoke(readWriteIvChanged_mockRead));
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EXPECT_CALL(innerStream, write(_, _)).Times(2);
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EXPECT_CALL(innerStream, read(_, _)).Times(2);
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EXPECT_CALL(innerStream, getEventTarget()).Times(6);
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EXPECT_CALL(eventQueue, removeHandlers(_)).Times(2);
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EXPECT_CALL(eventQueue, adoptHandler(_, _, _)).Times(2);
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@ -186,7 +205,7 @@ TEST(CCryptoTests, readWriteIVChanged)
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const byte iv2[] = "ccccccccccccccc";
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CCryptoStream cs1(eventQueue, &innerStream, false);
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cs1.setKeyWithIV(g_key, sizeof(g_key), iv1);
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cs1.setKeyWithIv(g_key, sizeof(g_key), iv1);
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UInt8 bufferIn[4];
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bufferIn[0] = 'a';
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@ -196,36 +215,43 @@ TEST(CCryptoTests, readWriteIVChanged)
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cs1.write(bufferIn, 4);
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CCryptoStream cs2(eventQueue, &innerStream, false);
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cs2.setKeyWithIV(g_key, sizeof(g_key), iv2);
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cs2.setKeyWithIv(g_key, sizeof(g_key), iv2);
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UInt8 bufferOut[4];
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cs2.read(bufferOut, 4);
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// assert that the values have changed.
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// assert that the values cannot be decrypted, since the second crypto
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// class instance is using a different IV.
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EXPECT_NE('a', bufferOut[0]);
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EXPECT_NE('b', bufferOut[1]);
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EXPECT_NE('c', bufferOut[2]);
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EXPECT_NE('d', bufferOut[3]);
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// generate a new IV and copy it to the second crypto class, and
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// ensure that the new IV is used.
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byte iv[CRYPTO_IV_SIZE];
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cs1.newIv(iv);
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cs2.setIv(iv);
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cs1.write(bufferIn, 4);
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cs2.read(bufferOut, 4);
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EXPECT_EQ('a', bufferOut[0]);
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EXPECT_EQ('b', bufferOut[1]);
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EXPECT_EQ('c', bufferOut[2]);
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EXPECT_EQ('d', bufferOut[3]);
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}
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void
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write_assertWrite(const void* in, UInt32 n)
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write_mockWrite(const void* in, UInt32 n)
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{
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UInt8* buffer = static_cast<UInt8*>(const_cast<void*>(in));
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EXPECT_EQ(8, buffer[0]);
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EXPECT_EQ(58, buffer[1]);
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EXPECT_EQ(151, buffer[2]);
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EXPECT_EQ(33, buffer[3]);
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memcpy(g_write_buffer, in, n);
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}
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UInt8
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read_mockRead(void* out, UInt32 n)
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{
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UInt8* buffer = static_cast<UInt8*>(out);
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buffer[0] = 8;
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buffer[1] = 58;
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buffer[2] = 151;
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buffer[3] = 33;
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memcpy(out, g_read_buffer, n);
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return n;
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}
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@ -239,22 +265,14 @@ write4Read1_mockWrite(const void* in, UInt32 n)
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UInt8
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write4Read1_mockRead(void* out, UInt32 n)
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{
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UInt8* buffer = static_cast<UInt8*>(out);
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buffer[0] = g_write4Read1_buffer[0];
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buffer[1] = g_write4Read1_buffer[1];
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buffer[2] = g_write4Read1_buffer[2];
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buffer[3] = g_write4Read1_buffer[3];
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return 4;
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memcpy(out, g_write4Read1_buffer, n);
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return n;
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}
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void
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write1Read4_mockWrite(const void* in, UInt32 n)
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{
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UInt8* buffer = static_cast<UInt8*>(const_cast<void*>(in));
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g_write1Read4_buffer[0] = buffer[0];
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g_write1Read4_buffer[1] = buffer[1];
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g_write1Read4_buffer[2] = buffer[2];
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g_write1Read4_buffer[3] = buffer[3];
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memcpy(g_write1Read4_buffer, in, n);
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}
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UInt8
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@ -266,22 +284,33 @@ write1Read4_mockRead(void* out, UInt32 n)
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}
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void
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readWriteIVChanged_mockWrite(const void* in, UInt32 n)
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readWriteIvChanged_mockWrite(const void* in, UInt32 n)
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{
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UInt8* buffer = static_cast<UInt8*>(const_cast<void*>(in));
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g_readWriteIVChanged_buffer[0] = buffer[0];
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g_readWriteIVChanged_buffer[1] = buffer[1];
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g_readWriteIVChanged_buffer[2] = buffer[2];
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g_readWriteIVChanged_buffer[3] = buffer[3];
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memcpy(g_readWriteIvChanged_buffer, in, n);
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}
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UInt8
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readWriteIVChanged_mockRead(void* out, UInt32 n)
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readWriteIvChanged_mockRead(void* out, UInt32 n)
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{
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UInt8* buffer = static_cast<UInt8*>(out);
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buffer[0] = g_readWriteIVChanged_buffer[0];
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buffer[1] = g_readWriteIVChanged_buffer[1];
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buffer[2] = g_readWriteIVChanged_buffer[2];
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buffer[3] = g_readWriteIVChanged_buffer[3];
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return 4;
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memcpy(out, g_readWriteIvChanged_buffer, n);
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return n;
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}
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// TODO: macro?
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void
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readWriteIvChangeTrigger_mockWrite(const void* in, UInt32 n)
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{
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assert(g_readWriteIvChangeTrigger_writeBufferIndex <= sizeof(g_readWriteIvChangeTrigger_buffer));
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memcpy(&g_readWriteIvChangeTrigger_buffer[g_readWriteIvChangeTrigger_writeBufferIndex], in, n);
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g_readWriteIvChangeTrigger_writeBufferIndex += n;
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}
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UInt8
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readWriteIvChangeTrigger_mockRead(void* out, UInt32 n)
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{
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assert(g_readWriteIvChangeTrigger_readBufferIndex <= sizeof(g_readWriteIvChangeTrigger_buffer));
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memcpy(out, &g_readWriteIvChangeTrigger_buffer[g_readWriteIvChangeTrigger_readBufferIndex], n);
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g_readWriteIvChangeTrigger_readBufferIndex += n;
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return n;
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}
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