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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <memory>
#include "keyhi.h"
#include "pk11pub.h"
#include "secerr.h"
#include "ssl.h"
#include "sslerr.h"
#include "sslexp.h"
#include "sslproto.h"
#include "gtest_utils.h"
#include "nss_scoped_ptrs.h"
#include "scoped_ptrs_ssl.h"
#include "tls_connect.h"
namespace nss_test {
// From tls_hkdf_unittest.cc:
extern size_t GetHashLength(SSLHashType ht);
class AeadTest : public ::testing::Test {
public:
AeadTest() : slot_(PK11_GetInternalSlot()) {}
void InitSecret(SSLHashType hash_type) {
static const uint8_t kData[64] = {'s', 'e', 'c', 'r', 'e', 't'};
SECItem key_item = {siBuffer, const_cast<uint8_t *>(kData),
static_cast<unsigned int>(GetHashLength(hash_type))};
PK11SymKey *s =
PK11_ImportSymKey(slot_.get(), CKM_SSL3_MASTER_KEY_DERIVE,
PK11_OriginUnwrap, CKA_DERIVE, &key_item, NULL);
ASSERT_NE(nullptr, s);
secret_.reset(s);
}
void SetUp() override {
InitSecret(ssl_hash_sha256);
PORT_SetError(0);
}
protected:
static void EncryptDecrypt(const ScopedSSLAeadContext &ctx,
const uint8_t *ciphertext, size_t ciphertext_len) {
static const uint8_t kAad[] = {'a', 'a', 'd'};
static const uint8_t kPlaintext[] = {'t', 'e', 'x', 't'};
static const size_t kMaxSize = 32;
ASSERT_GE(kMaxSize, ciphertext_len);
ASSERT_LT(0U, ciphertext_len);
uint8_t output[kMaxSize] = {0};
unsigned int output_len = 0;
EXPECT_EQ(SECSuccess, SSL_AeadEncrypt(ctx.get(), 0, kAad, sizeof(kAad),
kPlaintext, sizeof(kPlaintext),
output, &output_len, sizeof(output)));
ASSERT_EQ(ciphertext_len, static_cast<size_t>(output_len));
EXPECT_EQ(0, memcmp(ciphertext, output, ciphertext_len));
memset(output, 0, sizeof(output));
EXPECT_EQ(SECSuccess, SSL_AeadDecrypt(ctx.get(), 0, kAad, sizeof(kAad),
ciphertext, ciphertext_len, output,
&output_len, sizeof(output)));
ASSERT_EQ(sizeof(kPlaintext), static_cast<size_t>(output_len));
EXPECT_EQ(0, memcmp(kPlaintext, output, sizeof(kPlaintext)));
// Now for some tests of decryption failure.
// Truncate the input.
EXPECT_EQ(SECFailure, SSL_AeadDecrypt(ctx.get(), 0, kAad, sizeof(kAad),
ciphertext, ciphertext_len - 1,
output, &output_len, sizeof(output)));
EXPECT_EQ(SEC_ERROR_BAD_DATA, PORT_GetError());
// Skip the first byte of the AAD.
EXPECT_EQ(
SECFailure,
SSL_AeadDecrypt(ctx.get(), 0, kAad + 1, sizeof(kAad) - 1, ciphertext,
ciphertext_len, output, &output_len, sizeof(output)));
EXPECT_EQ(SEC_ERROR_BAD_DATA, PORT_GetError());
uint8_t input[kMaxSize] = {0};
// Toggle a byte of the input.
memcpy(input, ciphertext, ciphertext_len);
input[0] ^= 9;
EXPECT_EQ(SECFailure, SSL_AeadDecrypt(ctx.get(), 0, kAad, sizeof(kAad),
input, ciphertext_len, output,
&output_len, sizeof(output)));
EXPECT_EQ(SEC_ERROR_BAD_DATA, PORT_GetError());
// Toggle the last byte (the auth tag).
memcpy(input, ciphertext, ciphertext_len);
input[ciphertext_len - 1] ^= 77;
EXPECT_EQ(SECFailure, SSL_AeadDecrypt(ctx.get(), 0, kAad, sizeof(kAad),
input, ciphertext_len, output,
&output_len, sizeof(output)));
EXPECT_EQ(SEC_ERROR_BAD_DATA, PORT_GetError());
// Toggle some of the AAD.
memcpy(input, kAad, sizeof(kAad));
input[1] ^= 23;
EXPECT_EQ(SECFailure, SSL_AeadDecrypt(ctx.get(), 0, input, sizeof(kAad),
ciphertext, ciphertext_len, output,
&output_len, sizeof(output)));
EXPECT_EQ(SEC_ERROR_BAD_DATA, PORT_GetError());
}
protected:
ScopedPK11SymKey secret_;
private:
ScopedPK11SlotInfo slot_;
};
// These tests all use fixed inputs: a fixed secret, a fixed label, and fixed
// inputs. So they have fixed outputs.
static const char *kLabel = "test ";
static const uint8_t kCiphertextAes128Gcm[] = {
0x11, 0x14, 0xfc, 0x58, 0x4f, 0x44, 0xff, 0x8c, 0xb6, 0xd8,
0x20, 0xb3, 0xfb, 0x50, 0xd9, 0x3b, 0xd4, 0xc6, 0xe1, 0x14};
static const uint8_t kCiphertextAes256Gcm[] = {
0xf7, 0x27, 0x35, 0x80, 0x88, 0xaf, 0x99, 0x85, 0xf2, 0x83,
0xca, 0xbb, 0x95, 0x42, 0x09, 0x3f, 0x9c, 0xf3, 0x29, 0xf0};
static const uint8_t kCiphertextChaCha20Poly1305[] = {
0x4e, 0x89, 0x2c, 0xfa, 0xfc, 0x8c, 0x40, 0x55, 0x6d, 0x7e,
0x99, 0xac, 0x8e, 0x54, 0x58, 0xb1, 0x18, 0xd2, 0x66, 0x22};
TEST_F(AeadTest, AeadBadVersion) {
SSLAeadContext *ctx = nullptr;
ASSERT_EQ(SECFailure,
SSL_MakeAead(SSL_LIBRARY_VERSION_TLS_1_2, TLS_AES_128_GCM_SHA256,
secret_.get(), kLabel, strlen(kLabel), &ctx));
EXPECT_EQ(nullptr, ctx);
}
TEST_F(AeadTest, AeadUnsupportedCipher) {
SSLAeadContext *ctx = nullptr;
ASSERT_EQ(SECFailure,
SSL_MakeAead(SSL_LIBRARY_VERSION_TLS_1_3, TLS_RSA_WITH_NULL_MD5,
secret_.get(), kLabel, strlen(kLabel), &ctx));
EXPECT_EQ(nullptr, ctx);
}
TEST_F(AeadTest, AeadOlderCipher) {
SSLAeadContext *ctx = nullptr;
ASSERT_EQ(
SECFailure,
SSL_MakeAead(SSL_LIBRARY_VERSION_TLS_1_3, TLS_RSA_WITH_AES_128_CBC_SHA,
secret_.get(), kLabel, strlen(kLabel), &ctx));
EXPECT_EQ(nullptr, ctx);
}
TEST_F(AeadTest, AeadNoLabel) {
SSLAeadContext *ctx = nullptr;
ASSERT_EQ(SECFailure,
SSL_MakeAead(SSL_LIBRARY_VERSION_TLS_1_3, TLS_AES_128_GCM_SHA256,
secret_.get(), nullptr, 12, &ctx));
EXPECT_EQ(nullptr, ctx);
}
TEST_F(AeadTest, AeadLongLabel) {
SSLAeadContext *ctx = nullptr;
ASSERT_EQ(SECFailure,
SSL_MakeAead(SSL_LIBRARY_VERSION_TLS_1_3, TLS_AES_128_GCM_SHA256,
secret_.get(), "", 254, &ctx));
EXPECT_EQ(SEC_ERROR_INVALID_ARGS, PORT_GetError());
EXPECT_EQ(nullptr, ctx);
}
TEST_F(AeadTest, AeadNoPointer) {
SSLAeadContext *ctx = nullptr;
ASSERT_EQ(SECFailure,
SSL_MakeAead(SSL_LIBRARY_VERSION_TLS_1_3, TLS_AES_128_GCM_SHA256,
secret_.get(), kLabel, strlen(kLabel), nullptr));
EXPECT_EQ(SEC_ERROR_INVALID_ARGS, PORT_GetError());
EXPECT_EQ(nullptr, ctx);
}
TEST_F(AeadTest, AeadAes128Gcm) {
SSLAeadContext *ctxInit = nullptr;
ASSERT_EQ(SECSuccess,
SSL_MakeAead(SSL_LIBRARY_VERSION_TLS_1_3, TLS_AES_128_GCM_SHA256,
secret_.get(), kLabel, strlen(kLabel), &ctxInit));
ScopedSSLAeadContext ctx(ctxInit);
EXPECT_NE(nullptr, ctx);
EncryptDecrypt(ctx, kCiphertextAes128Gcm, sizeof(kCiphertextAes128Gcm));
}
TEST_F(AeadTest, AeadAes256Gcm) {
SSLAeadContext *ctxInit = nullptr;
ASSERT_EQ(SECSuccess,
SSL_MakeAead(SSL_LIBRARY_VERSION_TLS_1_3, TLS_AES_256_GCM_SHA384,
secret_.get(), kLabel, strlen(kLabel), &ctxInit));
ScopedSSLAeadContext ctx(ctxInit);
EXPECT_NE(nullptr, ctx);
EncryptDecrypt(ctx, kCiphertextAes256Gcm, sizeof(kCiphertextAes256Gcm));
}
TEST_F(AeadTest, AeadChaCha20Poly1305) {
SSLAeadContext *ctxInit = nullptr;
ASSERT_EQ(
SECSuccess,
SSL_MakeAead(SSL_LIBRARY_VERSION_TLS_1_3, TLS_CHACHA20_POLY1305_SHA256,
secret_.get(), kLabel, strlen(kLabel), &ctxInit));
ScopedSSLAeadContext ctx(ctxInit);
EXPECT_NE(nullptr, ctx);
EncryptDecrypt(ctx, kCiphertextChaCha20Poly1305,
sizeof(kCiphertextChaCha20Poly1305));
}
} // namespace nss_test
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