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Bug 1573911 - Add RSA Encryption test r=jcj
Add a test for various sizes of RSA encryption input. Differential Revision: https://phabricator.services.mozilla.com/D41999 --HG-- extra : moz-landing-system : lando
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Kevin Jacobs
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Jan 14, 2020
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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/. */ | ||
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#include <stdint.h> | ||
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#include "cpputil.h" | ||
#include "cryptohi.h" | ||
#include "gtest/gtest.h" | ||
#include "limits.h" | ||
#include "nss.h" | ||
#include "nss_scoped_ptrs.h" | ||
#include "pk11pub.h" | ||
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namespace nss_test { | ||
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TEST(RsaEncryptTest, MessageLengths) { | ||
const uint8_t spki[] = { | ||
0x30, 0x81, 0x9f, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, | ||
0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, 0x81, 0x8d, 0x00, 0x30, 0x81, | ||
0x89, 0x02, 0x81, 0x81, 0x00, 0xf8, 0xb8, 0x6c, 0x83, 0xb4, 0xbc, 0xd9, | ||
0xa8, 0x57, 0xc0, 0xa5, 0xb4, 0x59, 0x76, 0x8c, 0x54, 0x1d, 0x79, 0xeb, | ||
0x22, 0x52, 0x04, 0x7e, 0xd3, 0x37, 0xeb, 0x41, 0xfd, 0x83, 0xf9, 0xf0, | ||
0xa6, 0x85, 0x15, 0x34, 0x75, 0x71, 0x5a, 0x84, 0xa8, 0x3c, 0xd2, 0xef, | ||
0x5a, 0x4e, 0xd3, 0xde, 0x97, 0x8a, 0xdd, 0xff, 0xbb, 0xcf, 0x0a, 0xaa, | ||
0x86, 0x92, 0xbe, 0xb8, 0x50, 0xe4, 0xcd, 0x6f, 0x80, 0x33, 0x30, 0x76, | ||
0x13, 0x8f, 0xca, 0x7b, 0xdc, 0xec, 0x5a, 0xca, 0x63, 0xc7, 0x03, 0x25, | ||
0xef, 0xa8, 0x8a, 0x83, 0x58, 0x76, 0x20, 0xfa, 0x16, 0x77, 0xd7, 0x79, | ||
0x92, 0x63, 0x01, 0x48, 0x1a, 0xd8, 0x7b, 0x67, 0xf1, 0x52, 0x55, 0x49, | ||
0x4e, 0xd6, 0x6e, 0x4a, 0x5c, 0xd7, 0x7a, 0x37, 0x36, 0x0c, 0xde, 0xdd, | ||
0x8f, 0x44, 0xe8, 0xc2, 0xa7, 0x2c, 0x2b, 0xb5, 0xaf, 0x64, 0x4b, 0x61, | ||
0x07, 0x02, 0x03, 0x01, 0x00, 0x01, | ||
}; | ||
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// Import public key (use pre-generated for performance). | ||
SECItem spki_item = {siBuffer, toUcharPtr(spki), sizeof(spki)}; | ||
ScopedCERTSubjectPublicKeyInfo cert_spki( | ||
SECKEY_DecodeDERSubjectPublicKeyInfo(&spki_item)); | ||
ASSERT_TRUE(cert_spki); | ||
ScopedSECKEYPublicKey pub_key(SECKEY_ExtractPublicKey(cert_spki.get())); | ||
ASSERT_TRUE(pub_key); | ||
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int mod_len = SECKEY_PublicKeyStrength(pub_key.get()); | ||
ASSERT_TRUE(mod_len > 0); | ||
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std::vector<uint8_t> ctxt(mod_len); | ||
unsigned int ctxt_len; | ||
std::vector<uint8_t> msg(mod_len, 0xff); | ||
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// Test with valid inputs | ||
SECStatus rv = | ||
PK11_PubEncrypt(pub_key.get(), CKM_RSA_PKCS, nullptr, ctxt.data(), | ||
&ctxt_len, mod_len, msg.data(), 1, nullptr); | ||
ASSERT_EQ(SECSuccess, rv); | ||
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// Maximum message length is mod_len - miniumum padding (8B) - flags (3B) | ||
unsigned int max_msg_len = mod_len - 8 - 3; | ||
rv = PK11_PubEncrypt(pub_key.get(), CKM_RSA_PKCS, nullptr, ctxt.data(), | ||
&ctxt_len, mod_len, msg.data(), max_msg_len, nullptr); | ||
ASSERT_EQ(SECSuccess, rv); | ||
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// Test one past maximum length | ||
rv = | ||
PK11_PubEncrypt(pub_key.get(), CKM_RSA_PKCS, nullptr, ctxt.data(), | ||
&ctxt_len, mod_len, msg.data(), max_msg_len + 1, nullptr); | ||
ASSERT_EQ(SECFailure, rv); | ||
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// Make sure the the length will not overflow - i.e. | ||
// (padLen = modulusLen - (UINT_MAX + MINIMUM_PAD_LEN)) may overflow and | ||
// result in a value that appears valid. | ||
rv = PK11_PubEncrypt(pub_key.get(), CKM_RSA_PKCS, nullptr, ctxt.data(), | ||
&ctxt_len, UINT_MAX, msg.data(), UINT_MAX, nullptr); | ||
ASSERT_EQ(SECFailure, rv); | ||
} | ||
} |