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crypto: avoid taking ownership of OpenSSL objects · nodejs/node@ceb1d5e · GitHub

/ node Public

Commit ceb1d5e

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tniessen
authored and
marco-ippolito
committed
crypto: avoid taking ownership of OpenSSL objects
It is often unnecessary to obtain (shared) ownership of OpenSSL objects in this code, and it generally is more costly to do so as opposed to just obtaining a pointer to the respective OpenSSL object. Therefore, this patch replaces various OpenSSL function calls that take ownership with ones that do not. Refs: #53436 PR-URL: #53460 Reviewed-By: Daniel Lemire <daniel@lemire.me> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
1 parent 57b8b8e commit ceb1d5e

3 files changed

Lines changed: 34 additions & 34 deletions

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‎src/crypto/crypto_common.cc‎

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Original file line numberDiff line numberDiff line change
@@ -21,14 +21,6 @@
2121
#include <string>
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#include <unordered_map>
2323

24-
// Some OpenSSL 1.1.1 functions unnecessarily operate on and return non-const
25-
// pointers, whereas the same functions in OpenSSL 3 use const pointers.
26-
#if OPENSSL_VERSION_MAJOR >= 3
27-
#define OSSL3_CONST const
28-
#else
29-
#define OSSL3_CONST
30-
#endif
31-
3224
namespace node {
3325

3426
using v8::Array;

‎src/crypto/crypto_common.h‎

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@@ -10,6 +10,14 @@
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1111
#include <string>
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13+
// Some OpenSSL 1.1.1 functions unnecessarily operate on and return non-const
14+
// pointers, whereas the same functions in OpenSSL 3 use const pointers.
15+
#if OPENSSL_VERSION_MAJOR >= 3
16+
#define OSSL3_CONST const
17+
#else
18+
#define OSSL3_CONST
19+
#endif
20+
1321
namespace node {
1422
namespace crypto {
1523

‎src/crypto/crypto_keys.cc‎

Lines changed: 26 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -289,11 +289,9 @@ MaybeLocal<Value> BIOToStringOrBuffer(
289289
}
290290
}
291291

292-
293-
MaybeLocal<Value> WritePrivateKey(
294-
Environment* env,
295-
EVP_PKEY* pkey,
296-
const PrivateKeyEncodingConfig& config) {
292+
MaybeLocal<Value> WritePrivateKey(Environment* env,
293+
OSSL3_CONST EVP_PKEY* pkey,
294+
const PrivateKeyEncodingConfig& config) {
297295
BIOPointer bio(BIO_new(BIO_s_mem()));
298296
CHECK(bio);
299297

@@ -327,20 +325,21 @@ MaybeLocal<Value> WritePrivateKey(
327325
// PKCS#1 is only permitted for RSA keys.
328326
CHECK_EQ(EVP_PKEY_id(pkey), EVP_PKEY_RSA);
329327

330-
RSAPointer rsa(EVP_PKEY_get1_RSA(pkey));
328+
OSSL3_CONST RSA* rsa = EVP_PKEY_get0_RSA(pkey);
331329
if (config.format_ == kKeyFormatPEM) {
332330
// Encode PKCS#1 as PEM.
333-
err = PEM_write_bio_RSAPrivateKey(
334-
bio.get(), rsa.get(),
335-
config.cipher_,
336-
reinterpret_cast<unsigned char*>(pass),
337-
pass_len,
338-
nullptr, nullptr) != 1;
331+
err = PEM_write_bio_RSAPrivateKey(bio.get(),
332+
rsa,
333+
config.cipher_,
334+
reinterpret_cast<unsigned char*>(pass),
335+
pass_len,
336+
nullptr,
337+
nullptr) != 1;
339338
} else {
340339
// Encode PKCS#1 as DER. This does not permit encryption.
341340
CHECK_EQ(config.format_, kKeyFormatDER);
342341
CHECK_NULL(config.cipher_);
343-
err = i2d_RSAPrivateKey_bio(bio.get(), rsa.get()) != 1;
342+
err = i2d_RSAPrivateKey_bio(bio.get(), rsa) != 1;
344343
}
345344
} else if (encoding_type == kKeyEncodingPKCS8) {
346345
if (config.format_ == kKeyFormatPEM) {
@@ -367,20 +366,21 @@ MaybeLocal<Value> WritePrivateKey(
367366
// SEC1 is only permitted for EC keys.
368367
CHECK_EQ(EVP_PKEY_id(pkey), EVP_PKEY_EC);
369368

370-
ECKeyPointer ec_key(EVP_PKEY_get1_EC_KEY(pkey));
369+
OSSL3_CONST EC_KEY* ec_key = EVP_PKEY_get0_EC_KEY(pkey);
371370
if (config.format_ == kKeyFormatPEM) {
372371
// Encode SEC1 as PEM.
373-
err = PEM_write_bio_ECPrivateKey(
374-
bio.get(), ec_key.get(),
375-
config.cipher_,
376-
reinterpret_cast<unsigned char*>(pass),
377-
pass_len,
378-
nullptr, nullptr) != 1;
372+
err = PEM_write_bio_ECPrivateKey(bio.get(),
373+
ec_key,
374+
config.cipher_,
375+
reinterpret_cast<unsigned char*>(pass),
376+
pass_len,
377+
nullptr,
378+
nullptr) != 1;
379379
} else {
380380
// Encode SEC1 as DER. This does not permit encryption.
381381
CHECK_EQ(config.format_, kKeyFormatDER);
382382
CHECK_NULL(config.cipher_);
383-
err = i2d_ECPrivateKey_bio(bio.get(), ec_key.get()) != 1;
383+
err = i2d_ECPrivateKey_bio(bio.get(), ec_key) != 1;
384384
}
385385
}
386386

@@ -391,20 +391,20 @@ MaybeLocal<Value> WritePrivateKey(
391391
return BIOToStringOrBuffer(env, bio.get(), config.format_);
392392
}
393393

394-
bool WritePublicKeyInner(EVP_PKEY* pkey,
394+
bool WritePublicKeyInner(OSSL3_CONST EVP_PKEY* pkey,
395395
const BIOPointer& bio,
396396
const PublicKeyEncodingConfig& config) {
397397
if (config.type_.ToChecked() == kKeyEncodingPKCS1) {
398398
// PKCS#1 is only valid for RSA keys.
399399
CHECK_EQ(EVP_PKEY_id(pkey), EVP_PKEY_RSA);
400-
RSAPointer rsa(EVP_PKEY_get1_RSA(pkey));
400+
OSSL3_CONST RSA* rsa = EVP_PKEY_get0_RSA(pkey);
401401
if (config.format_ == kKeyFormatPEM) {
402402
// Encode PKCS#1 as PEM.
403-
return PEM_write_bio_RSAPublicKey(bio.get(), rsa.get()) == 1;
403+
return PEM_write_bio_RSAPublicKey(bio.get(), rsa) == 1;
404404
} else {
405405
// Encode PKCS#1 as DER.
406406
CHECK_EQ(config.format_, kKeyFormatDER);
407-
return i2d_RSAPublicKey_bio(bio.get(), rsa.get()) == 1;
407+
return i2d_RSAPublicKey_bio(bio.get(), rsa) == 1;
408408
}
409409
} else {
410410
CHECK_EQ(config.type_.ToChecked(), kKeyEncodingSPKI);
@@ -420,7 +420,7 @@ bool WritePublicKeyInner(EVP_PKEY* pkey,
420420
}
421421

422422
MaybeLocal<Value> WritePublicKey(Environment* env,
423-
EVP_PKEY* pkey,
423+
OSSL3_CONST EVP_PKEY* pkey,
424424
const PublicKeyEncodingConfig& config) {
425425
BIOPointer bio(BIO_new(BIO_s_mem()));
426426
CHECK(bio);

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