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comphelper: fix test - key should be 32 bytes, not 16 bytes

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Issue spotted when trying encryption and decryption with OpenSSL,
which doesn't handle the shorter keys correctly.

Also can't use the same instance of Encrypt after an attempt that
failed  (0 bytes written) as the blocks are inter-dependent and
it looks like OpenSSL already changes the state.

Change-Id: I061764e6727c7fbe600e11c5a5a6b8889d15c4e7
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/177305
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Tested-by: Jenkins
This commit is contained in:
Tomaž Vajngerl 2024-11-26 10:14:17 +09:00 committed by Tomaž Vajngerl
parent 5e0c670e65
commit 8f2bf78a55
1 changed files with 56 additions and 42 deletions
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34
comphelper/qa/unit/CryptoTest.cxx
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@ -89,8 +89,9 @@ CPPUNIT_TEST_FIXTURE(CryptoTest, testRoundUp)
CPPUNIT_TEST_FIXTURE(CryptoTest, testEncrypt_AES256_CBC)
{
std::vector<sal_uInt8> key = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 };
std::vector<sal_uInt8> key = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11,
0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x20, 0x21, 0x22,
0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x30, 0x31, 0x32 };
std::vector<sal_uInt8> iv = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 };
@ -99,13 +100,18 @@ CPPUNIT_TEST_FIXTURE(CryptoTest, testEncrypt_AES256_CBC)
std::vector<sal_uInt8> encrypted(original.size());
{
sal_uInt32 nWrittenSize = 0;
comphelper::Encrypt aEncryptor(key, iv, comphelper::CryptoType::AES_256_CBC);
nWrittenSize = aEncryptor.update(encrypted, original);
// nothing should be written as the size of the input is not a multiple of block size
CPPUNIT_ASSERT_EQUAL(sal_uInt32(0), nWrittenSize);
}
{
sal_uInt32 nWrittenSize = 0;
comphelper::Encrypt aEncryptor(key, iv, comphelper::CryptoType::AES_256_CBC);
original.resize(16, 0); // apply padding to make it multiple of block size
encrypted.resize(16, 0);
@ -116,10 +122,10 @@ CPPUNIT_TEST_FIXTURE(CryptoTest, testEncrypt_AES256_CBC)
nWrittenSize = aEncryptor.update(encrypted, original);
CPPUNIT_ASSERT_EQUAL(sal_uInt32(16), nWrittenSize);
CPPUNIT_ASSERT_EQUAL(std::string("181fd8e8e33d2e0b06abc41c2b90f6e5"),
CPPUNIT_ASSERT_EQUAL(std::string("e75cb91a34377c09c354c24fcef345a6"),
comphelper::hashToString(encrypted));
std::vector<sal_uInt8> decrypted(encrypted.size());
std::vector<sal_uInt8> decrypted(encrypted.size(), 0);
comphelper::Decrypt aDecryptor(key, iv, comphelper::CryptoType::AES_256_CBC);
nWrittenSize = aDecryptor.update(decrypted, encrypted);
@ -127,12 +133,14 @@ CPPUNIT_TEST_FIXTURE(CryptoTest, testEncrypt_AES256_CBC)
CPPUNIT_ASSERT_EQUAL(std::string("73656372657400000000000000000000"),
comphelper::hashToString(decrypted));
}
}
CPPUNIT_TEST_FIXTURE(CryptoTest, testEncrypt_AES256_ECB)
{
std::vector<sal_uInt8> key = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 };
std::vector<sal_uInt8> key = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11,
0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x20, 0x21, 0x22,
0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x30, 0x31, 0x32 };
std::vector<sal_uInt8> iv = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 };
@ -141,13 +149,18 @@ CPPUNIT_TEST_FIXTURE(CryptoTest, testEncrypt_AES256_ECB)
std::vector<sal_uInt8> encrypted(original.size());
{
sal_uInt32 nWrittenSize = 0;
comphelper::Encrypt aEncryptor(key, iv, comphelper::CryptoType::AES_256_ECB);
nWrittenSize = aEncryptor.update(encrypted, original);
// nothing should be written as the size of the input is not a multiple of block size
CPPUNIT_ASSERT_EQUAL(sal_uInt32(0), nWrittenSize);
}
{
sal_uInt32 nWrittenSize = 0;
comphelper::Encrypt aEncryptor(key, iv, comphelper::CryptoType::AES_256_ECB);
original.resize(16, 0); // apply padding to make it multiple of block size
encrypted.resize(16, 0);
@ -158,10 +171,10 @@ CPPUNIT_TEST_FIXTURE(CryptoTest, testEncrypt_AES256_ECB)
nWrittenSize = aEncryptor.update(encrypted, original);
CPPUNIT_ASSERT_EQUAL(sal_uInt32(16), nWrittenSize);
CPPUNIT_ASSERT_EQUAL(std::string("11c380204c0bae9f18a795177e28d842"),
CPPUNIT_ASSERT_EQUAL(std::string("abf7abec9a6b58c089e902397c47ac49"),
comphelper::hashToString(encrypted));
std::vector<sal_uInt8> decrypted(encrypted.size());
std::vector<sal_uInt8> decrypted(encrypted.size(), 0);
comphelper::Decrypt aDecryptor(key, iv, comphelper::CryptoType::AES_256_ECB);
nWrittenSize = aDecryptor.update(decrypted, encrypted);
@ -169,6 +182,7 @@ CPPUNIT_TEST_FIXTURE(CryptoTest, testEncrypt_AES256_ECB)
CPPUNIT_ASSERT_EQUAL(std::string("73656372657400000000000000000000"),
comphelper::hashToString(decrypted));
}
}
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