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Crypt/PKCS8: rm duplicate code and improve detection of public keys

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This commit is contained in:
terrafrost 2023-03-04 22:19:58 -06:00
parent b9996fda00
commit cf69b29427
5 changed files with 14 additions and 62 deletions
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11
phpseclib/Crypt/Common/Formats/Keys/PKCS8.php
View File

@ -317,6 +317,9 @@ abstract class PKCS8 extends PKCS
{
$decoded = self::preParse($key);
$isPublic = strpos($key, 'PUBLIC') !== false;
$isPrivate = strpos($key, 'PRIVATE') !== false;
$meta = [];
$decrypted = ASN1::asn1map($decoded[0], Maps\EncryptedPrivateKeyInfo::MAP);
@ -445,6 +448,10 @@ abstract class PKCS8 extends PKCS
$private = ASN1::asn1map($decoded[0], Maps\OneAsymmetricKey::MAP);
if (is_array($private)) {
if ($isPublic) {
throw new \UnexpectedValueException('Human readable string claims public key but DER encoded string claims private key');
}
if (isset($private['privateKeyAlgorithm']['parameters']) && !$private['privateKeyAlgorithm']['parameters'] instanceof ASN1\Element && isset($decoded[0]['content'][1]['content'][1])) {
$temp = $decoded[0]['content'][1]['content'][1];
$private['privateKeyAlgorithm']['parameters'] = new ASN1\Element(substr($key, $temp['start'], $temp['length']));
@ -474,6 +481,10 @@ abstract class PKCS8 extends PKCS
$public = ASN1::asn1map($decoded[0], Maps\PublicKeyInfo::MAP);
if (is_array($public)) {
if ($isPrivate) {
throw new \UnexpectedValueException('Human readable string claims private key but DER encoded string claims public key');
}
if ($public['publicKey'][0] != "\0") {
throw new \UnexpectedValueException('The first byte of the public key should be null - not ' . bin2hex($public['publicKey'][0]));
}

14
phpseclib/Crypt/DH/Formats/Keys/PKCS8.php
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@ -19,7 +19,6 @@
namespace phpseclib3\Crypt\DH\Formats\Keys;
use phpseclib3\Common\Functions\Strings;
use phpseclib3\Crypt\Common\Formats\Keys\PKCS8 as Progenitor;
use phpseclib3\File\ASN1;
use phpseclib3\File\ASN1\Maps;
@ -62,23 +61,10 @@ abstract class PKCS8 extends Progenitor
*/
public static function load($key, $password = '')
{
if (!Strings::is_stringable($key)) {
throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
}
$isPublic = strpos($key, 'PUBLIC') !== false;
$key = parent::load($key, $password);
$type = isset($key['privateKey']) ? 'privateKey' : 'publicKey';
switch (true) {
case !$isPublic && $type == 'publicKey':
throw new \UnexpectedValueException('Human readable string claims non-public key but DER encoded string claims public key');
case $isPublic && $type == 'privateKey':
throw new \UnexpectedValueException('Human readable string claims public key but DER encoded string claims private key');
}
$decoded = ASN1::decodeBER($key[$type . 'Algorithm']['parameters']->element);
if (empty($decoded)) {
throw new \RuntimeException('Unable to decode BER of parameters');

14
phpseclib/Crypt/DSA/Formats/Keys/PKCS8.php
View File

@ -23,7 +23,6 @@
namespace phpseclib3\Crypt\DSA\Formats\Keys;
use phpseclib3\Common\Functions\Strings;
use phpseclib3\Crypt\Common\Formats\Keys\PKCS8 as Progenitor;
use phpseclib3\File\ASN1;
use phpseclib3\File\ASN1\Maps;
@ -66,23 +65,10 @@ abstract class PKCS8 extends Progenitor
*/
public static function load($key, $password = '')
{
if (!Strings::is_stringable($key)) {
throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
}
$isPublic = strpos($key, 'PUBLIC') !== false;
$key = parent::load($key, $password);
$type = isset($key['privateKey']) ? 'privateKey' : 'publicKey';
switch (true) {
case !$isPublic && $type == 'publicKey':
throw new \UnexpectedValueException('Human readable string claims non-public key but DER encoded string claims public key');
case $isPublic && $type == 'privateKey':
throw new \UnexpectedValueException('Human readable string claims public key but DER encoded string claims private key');
}
$decoded = ASN1::decodeBER($key[$type . 'Algorithm']['parameters']->element);
if (!$decoded) {
throw new \RuntimeException('Unable to decode BER of parameters');

16
phpseclib/Crypt/EC/Formats/Keys/PKCS8.php
View File

@ -23,7 +23,6 @@
namespace phpseclib3\Crypt\EC\Formats\Keys;
use phpseclib3\Common\Functions\Strings;
use phpseclib3\Crypt\Common\Formats\Keys\PKCS8 as Progenitor;
use phpseclib3\Crypt\EC\BaseCurves\Base as BaseCurve;
use phpseclib3\Crypt\EC\BaseCurves\Montgomery as MontgomeryCurve;
@ -74,23 +73,10 @@ abstract class PKCS8 extends Progenitor
// one that's called
self::initialize_static_variables();
if (!Strings::is_stringable($key)) {
throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
}
$isPublic = strpos($key, 'PUBLIC') !== false;
$key = parent::load($key, $password);
$type = isset($key['privateKey']) ? 'privateKey' : 'publicKey';
switch (true) {
case !$isPublic && $type == 'publicKey':
throw new \UnexpectedValueException('Human readable string claims non-public key but DER encoded string claims public key');
case $isPublic && $type == 'privateKey':
throw new \UnexpectedValueException('Human readable string claims public key but DER encoded string claims private key');
}
switch ($key[$type . 'Algorithm']['algorithm']) {
case 'id-Ed25519':
case 'id-Ed448':
@ -109,7 +95,7 @@ abstract class PKCS8 extends Progenitor
$components = [];
$components['curve'] = self::loadCurveByParam($params);
if ($isPublic) {
if ($type == 'publicKey') {
$components['QA'] = self::extractPoint("\0" . $key['publicKey'], $components['curve']);
return $components;

21
phpseclib/Crypt/RSA/Formats/Keys/PKCS8.php
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@ -25,7 +25,6 @@
namespace phpseclib3\Crypt\RSA\Formats\Keys;
use phpseclib3\Common\Functions\Strings;
use phpseclib3\Crypt\Common\Formats\Keys\PKCS8 as Progenitor;
use phpseclib3\File\ASN1;
use phpseclib3\Math\BigInteger;
@ -67,29 +66,13 @@ abstract class PKCS8 extends Progenitor
*/
public static function load($key, $password = '')
{
if (!Strings::is_stringable($key)) {
throw new \UnexpectedValueException('Key should be a string - not a ' . gettype($key));
}
if (strpos($key, 'PUBLIC') !== false) {
$components = ['isPublicKey' => true];
} elseif (strpos($key, 'PRIVATE') !== false) {
$components = ['isPublicKey' => false];
} else {
$components = [];
}
$key = parent::load($key, $password);
if (isset($key['privateKey'])) {
if (!isset($components['isPublicKey'])) {
$components['isPublicKey'] = false;
}
$components['isPublicKey'] = false;
$type = 'private';
} else {
if (!isset($components['isPublicKey'])) {
$components['isPublicKey'] = true;
}
$components['isPublicKey'] = true;
$type = 'public';
}