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/home/techb158/ileadtechnology.com/vendor/defuse/php-encryption/src

Name	Size	Mode	Actions
Exception/	-	0755	rm
Core.php	15720	0644	edit dl rm
Crypto.php	14602	0644	edit dl rm
DerivedKeys.php	779	0644	edit dl rm
Encoding.php	9358	0644	edit dl rm
File.php	27555	0644	edit dl rm
Key.php	2384	0644	edit dl rm
KeyOrPassword.php	4555	0644	edit dl rm
KeyProtectedByPassword.php	4723	0644	edit dl rm
RuntimeTests.php	8375	0644	edit dl rm

Edit: /home/techb158/ileadtechnology.com/vendor/defuse/php-encryption/src/Crypto.php (14602B)

<?php

namespace Defuse\Crypto;

use Defuse\Crypto\Exception as Ex;

class Crypto
{
    /**
     * Encrypts a string with a Key.
     *
     * @param string $plaintext
     * @param Key    $key
     * @param bool   $raw_binary
     *
     * @throws Ex\EnvironmentIsBrokenException
     * @throws \TypeError
     *
     * @return string
     */
    public static function encrypt($plaintext, $key, $raw_binary = false)
    {
        if (!\is_string($plaintext)) {
            throw new \TypeError(
                'String expected for argument 1. ' . \ucfirst(\gettype($plaintext)) . ' given instead.'
            );
        }
        if (!($key instanceof Key)) {
            throw new \TypeError(
                'Key expected for argument 2. ' . \ucfirst(\gettype($key)) . ' given instead.'
            );
        }
        if (!\is_bool($raw_binary)) {
            throw new \TypeError(
                'Boolean expected for argument 3. ' . \ucfirst(\gettype($raw_binary)) . ' given instead.'
            );
        }
        return self::encryptInternal(
            $plaintext,
            KeyOrPassword::createFromKey($key),
            $raw_binary
        );
    }

/**
     * Encrypts a string with a password, using a slow key derivation function
     * to make password cracking more expensive.
     *
     * @param string $plaintext
     * @param string $password
     * @param bool   $raw_binary
     *
     * @throws Ex\EnvironmentIsBrokenException
     * @throws \TypeError
     *
     * @return string
     */
    public static function encryptWithPassword(
        $plaintext,
        #[\SensitiveParameter]
        $password,
        $raw_binary = false
    )
    {
        if (!\is_string($plaintext)) {
            throw new \TypeError(
                'String expected for argument 1. ' . \ucfirst(\gettype($plaintext)) . ' given instead.'
            );
        }
        if (!\is_string($password)) {
            throw new \TypeError(
                'String expected for argument 2. ' . \ucfirst(\gettype($password)) . ' given instead.'
            );
        }
        if (!\is_bool($raw_binary)) {
            throw new \TypeError(
                'Boolean expected for argument 3. ' . \ucfirst(\gettype($raw_binary)) . ' given instead.'
            );
        }
        return self::encryptInternal(
            $plaintext,
            KeyOrPassword::createFromPassword($password),
            $raw_binary
        );
    }

/**
     * Decrypts a ciphertext to a string with a Key.
     *
     * @param string $ciphertext
     * @param Key    $key
     * @param bool   $raw_binary
     *
     * @throws \TypeError
     * @throws Ex\EnvironmentIsBrokenException
     * @throws Ex\WrongKeyOrModifiedCiphertextException
     *
     * @return string
     */
    public static function decrypt($ciphertext, $key, $raw_binary = false)
    {
        if (!\is_string($ciphertext)) {
            throw new \TypeError(
                'String expected for argument 1. ' . \ucfirst(\gettype($ciphertext)) . ' given instead.'
            );
        }
        if (!($key instanceof Key)) {
            throw new \TypeError(
                'Key expected for argument 2. ' . \ucfirst(\gettype($key)) . ' given instead.'
            );
        }
        if (!\is_bool($raw_binary)) {
            throw new \TypeError(
                'Boolean expected for argument 3. ' . \ucfirst(\gettype($raw_binary)) . ' given instead.'
            );
        }
        return self::decryptInternal(
            $ciphertext,
            KeyOrPassword::createFromKey($key),
            $raw_binary
        );
    }

/**
     * Decrypts a ciphertext to a string with a password, using a slow key
     * derivation function to make password cracking more expensive.
     *
     * @param string $ciphertext
     * @param string $password
     * @param bool   $raw_binary
     *
     * @throws Ex\EnvironmentIsBrokenException
     * @throws Ex\WrongKeyOrModifiedCiphertextException
     * @throws \TypeError
     *
     * @return string
     */
    public static function decryptWithPassword(
        $ciphertext,
        #[\SensitiveParameter]
        $password,
        $raw_binary = false
    )
    {
        if (!\is_string($ciphertext)) {
            throw new \TypeError(
                'String expected for argument 1. ' . \ucfirst(\gettype($ciphertext)) . ' given instead.'
            );
        }
        if (!\is_string($password)) {
            throw new \TypeError(
                'String expected for argument 2. ' . \ucfirst(\gettype($password)) . ' given instead.'
            );
        }
        if (!\is_bool($raw_binary)) {
            throw new \TypeError(
                'Boolean expected for argument 3. ' . \ucfirst(\gettype($raw_binary)) . ' given instead.'
            );
        }
        return self::decryptInternal(
            $ciphertext,
            KeyOrPassword::createFromPassword($password),
            $raw_binary
        );
    }

/**
     * Decrypts a legacy ciphertext produced by version 1 of this library.
     *
     * @param string $ciphertext
     * @param string $key
     *
     * @throws Ex\EnvironmentIsBrokenException
     * @throws Ex\WrongKeyOrModifiedCiphertextException
     * @throws \TypeError
     *
     * @return string
     */
    public static function legacyDecrypt(
        $ciphertext,
        #[\SensitiveParameter]
        $key
    )
    {
        if (!\is_string($ciphertext)) {
            throw new \TypeError(
                'String expected for argument 1. ' . \ucfirst(\gettype($ciphertext)) . ' given instead.'
            );
        }
        if (!\is_string($key)) {
            throw new \TypeError(
                'String expected for argument 2. ' . \ucfirst(\gettype($key)) . ' given instead.'
            );
        }

RuntimeTests::runtimeTest();

// Extract the HMAC from the front of the ciphertext.
        if (Core::ourStrlen($ciphertext) <= Core::LEGACY_MAC_BYTE_SIZE) {
            throw new Ex\WrongKeyOrModifiedCiphertextException(
                'Ciphertext is too short.'
            );
        }
        /**
         * @var string
         */
        $hmac = Core::ourSubstr($ciphertext, 0, Core::LEGACY_MAC_BYTE_SIZE);
        Core::ensureTrue(\is_string($hmac));
        /**
         * @var string
         */
        $messageCiphertext = Core::ourSubstr($ciphertext, Core::LEGACY_MAC_BYTE_SIZE);
        Core::ensureTrue(\is_string($messageCiphertext));

// Regenerate the same authentication sub-key.
        $akey = Core::HKDF(
            Core::LEGACY_HASH_FUNCTION_NAME,
            $key,
            Core::LEGACY_KEY_BYTE_SIZE,
            Core::LEGACY_AUTHENTICATION_INFO_STRING,
            null
        );

if (self::verifyHMAC($hmac, $messageCiphertext, $akey)) {
            // Regenerate the same encryption sub-key.
            $ekey = Core::HKDF(
                Core::LEGACY_HASH_FUNCTION_NAME,
                $key,
                Core::LEGACY_KEY_BYTE_SIZE,
                Core::LEGACY_ENCRYPTION_INFO_STRING,
                null
            );

// Extract the IV from the ciphertext.
            if (Core::ourStrlen($messageCiphertext) <= Core::LEGACY_BLOCK_BYTE_SIZE) {
                throw new Ex\WrongKeyOrModifiedCiphertextException(
                    'Ciphertext is too short.'
                );
            }
            /**
             * @var string
             */
            $iv = Core::ourSubstr($messageCiphertext, 0, Core::LEGACY_BLOCK_BYTE_SIZE);
            Core::ensureTrue(\is_string($iv));

/**
             * @var string
             */
            $actualCiphertext = Core::ourSubstr($messageCiphertext, Core::LEGACY_BLOCK_BYTE_SIZE);
            Core::ensureTrue(\is_string($actualCiphertext));

// Do the decryption.
            $plaintext = self::plainDecrypt($actualCiphertext, $ekey, $iv, Core::LEGACY_CIPHER_METHOD);
            return $plaintext;
        } else {
            throw new Ex\WrongKeyOrModifiedCiphertextException(
                'Integrity check failed.'
            );
        }
    }

/**
     * Encrypts a string with either a key or a password.
     *
     * @param string        $plaintext
     * @param KeyOrPassword $secret
     * @param bool          $raw_binary
     *
     * @return string
     */
    private static function encryptInternal($plaintext, KeyOrPassword $secret, $raw_binary)
    {
        RuntimeTests::runtimeTest();

$salt = Core::secureRandom(Core::SALT_BYTE_SIZE);
        $keys = $secret->deriveKeys($salt);
        $ekey = $keys->getEncryptionKey();
        $akey = $keys->getAuthenticationKey();
        $iv     = Core::secureRandom(Core::BLOCK_BYTE_SIZE);

$ciphertext = Core::CURRENT_VERSION . $salt . $iv . self::plainEncrypt($plaintext, $ekey, $iv);
        $auth       = \hash_hmac(Core::HASH_FUNCTION_NAME, $ciphertext, $akey, true);
        $ciphertext = $ciphertext . $auth;

if ($raw_binary) {
            return $ciphertext;
        }
        return Encoding::binToHex($ciphertext);
    }

/**
     * Decrypts a ciphertext to a string with either a key or a password.
     *
     * @param string        $ciphertext
     * @param KeyOrPassword $secret
     * @param bool          $raw_binary
     *
     * @throws Ex\EnvironmentIsBrokenException
     * @throws Ex\WrongKeyOrModifiedCiphertextException
     *
     * @return string
     */
    private static function decryptInternal($ciphertext, KeyOrPassword $secret, $raw_binary)
    {
        RuntimeTests::runtimeTest();

if (! $raw_binary) {
            try {
                $ciphertext = Encoding::hexToBin($ciphertext);
            } catch (Ex\BadFormatException $ex) {
                throw new Ex\WrongKeyOrModifiedCiphertextException(
                    'Ciphertext has invalid hex encoding.'
                );
            }
        }

if (Core::ourStrlen($ciphertext) < Core::MINIMUM_CIPHERTEXT_SIZE) {
            throw new Ex\WrongKeyOrModifiedCiphertextException(
                'Ciphertext is too short.'
            );
        }

// Get and check the version header.
        /** @var string $header */
        $header = Core::ourSubstr($ciphertext, 0, Core::HEADER_VERSION_SIZE);
        if ($header !== Core::CURRENT_VERSION) {
            throw new Ex\WrongKeyOrModifiedCiphertextException(
                'Bad version header.'
            );
        }

// Get the salt.
        /** @var string $salt */
        $salt = Core::ourSubstr(
            $ciphertext,
            Core::HEADER_VERSION_SIZE,
            Core::SALT_BYTE_SIZE
        );
        Core::ensureTrue(\is_string($salt));

// Get the IV.
        /** @var string $iv */
        $iv = Core::ourSubstr(
            $ciphertext,
            Core::HEADER_VERSION_SIZE + Core::SALT_BYTE_SIZE,
            Core::BLOCK_BYTE_SIZE
        );
        Core::ensureTrue(\is_string($iv));

// Get the HMAC.
        /** @var string $hmac */
        $hmac = Core::ourSubstr(
            $ciphertext,
            Core::ourStrlen($ciphertext) - Core::MAC_BYTE_SIZE,
            Core::MAC_BYTE_SIZE
        );
        Core::ensureTrue(\is_string($hmac));

// Get the actual encrypted ciphertext.
        /** @var string $encrypted */
        $encrypted = Core::ourSubstr(
            $ciphertext,
            Core::HEADER_VERSION_SIZE + Core::SALT_BYTE_SIZE +
                Core::BLOCK_BYTE_SIZE,
            Core::ourStrlen($ciphertext) - Core::MAC_BYTE_SIZE - Core::SALT_BYTE_SIZE -
                Core::BLOCK_BYTE_SIZE - Core::HEADER_VERSION_SIZE
        );
        Core::ensureTrue(\is_string($encrypted));

// Derive the separate encryption and authentication keys from the key
        // or password, whichever it is.
        $keys = $secret->deriveKeys($salt);

if (self::verifyHMAC($hmac, $header . $salt . $iv . $encrypted, $keys->getAuthenticationKey())) {
            $plaintext = self::plainDecrypt($encrypted, $keys->getEncryptionKey(), $iv, Core::CIPHER_METHOD);
            return $plaintext;
        } else {
            throw new Ex\WrongKeyOrModifiedCiphertextException(
                'Integrity check failed.'
            );
        }
    }

/**
     * Raw unauthenticated encryption (insecure on its own).
     *
     * @param string $plaintext
     * @param string $key
     * @param string $iv
     *
     * @throws Ex\EnvironmentIsBrokenException
     *
     * @return string
     */
    protected static function plainEncrypt(
        $plaintext,
        #[\SensitiveParameter]
        $key,
        #[\SensitiveParameter]
        $iv
    )
    {
        Core::ensureConstantExists('OPENSSL_RAW_DATA');
        Core::ensureFunctionExists('openssl_encrypt');
        /** @var string $ciphertext */
        $ciphertext = \openssl_encrypt(
            $plaintext,
            Core::CIPHER_METHOD,
            $key,
            OPENSSL_RAW_DATA,
            $iv
        );

Core::ensureTrue(\is_string($ciphertext), 'openssl_encrypt() failed');

return $ciphertext;
    }

/**
     * Raw unauthenticated decryption (insecure on its own).
     *
     * @param string $ciphertext
     * @param string $key
     * @param string $iv
     * @param string $cipherMethod
     *
     * @throws Ex\EnvironmentIsBrokenException
     *
     * @return string
     */
    protected static function plainDecrypt(
        $ciphertext,
        #[\SensitiveParameter]
        $key,
        #[\SensitiveParameter]
        $iv,
        $cipherMethod
    )
    {
        Core::ensureConstantExists('OPENSSL_RAW_DATA');
        Core::ensureFunctionExists('openssl_decrypt');

/** @var string $plaintext */
        $plaintext = \openssl_decrypt(
            $ciphertext,
            $cipherMethod,
            $key,
            OPENSSL_RAW_DATA,
            $iv
        );
        Core::ensureTrue(\is_string($plaintext), 'openssl_decrypt() failed.');

return $plaintext;
    }

/**
     * Verifies an HMAC without leaking information through side-channels.
     *
     * @param string $expected_hmac
     * @param string $message
     * @param string $key
     *
     * @throws Ex\EnvironmentIsBrokenException
     *
     * @return bool
     */
    protected static function verifyHMAC(
        $expected_hmac,
        $message,
        #[\SensitiveParameter]
        $key
    )
    {
        $message_hmac = \hash_hmac(Core::HASH_FUNCTION_NAME, $message, $key, true);
        return Core::hashEquals($message_hmac, $expected_hmac);
    }
}

deriveKeys($salt); $ekey = $keys->getEncryptionKey(); $akey = $keys->getAuthenticationKey(); $iv = Core::secureRandom(Core::BLOCK_BYTE_SIZE); $ciphertext = Core::CURRENT_VERSION . $salt . $iv . self::plainEncrypt($plaintext, $ekey, $iv); $auth = \hash_hmac(Core::HASH_FUNCTION_NAME, $ciphertext, $akey, true); $ciphertext = $ciphertext . $auth; if ($raw_binary) { return $ciphertext; } return Encoding::binToHex($ciphertext); } /** * Decrypts a ciphertext to a string with either a key or a password. * * @param string $ciphertext * @param KeyOrPassword $secret * @param bool $raw_binary * * @throws Ex\EnvironmentIsBrokenException * @throws Ex\WrongKeyOrModifiedCiphertextException * * @return string */ private static function decryptInternal($ciphertext, KeyOrPassword $secret, $raw_binary) { RuntimeTests::runtimeTest(); if (! $raw_binary) { try { $ciphertext = Encoding::hexToBin($ciphertext); } catch (Ex\BadFormatException $ex) { throw new Ex\WrongKeyOrModifiedCiphertextException( 'Ciphertext has invalid hex encoding.' ); } } if (Core::ourStrlen($ciphertext) < Core::MINIMUM_CIPHERTEXT_SIZE) { throw new Ex\WrongKeyOrModifiedCiphertextException( 'Ciphertext is too short.' ); } // Get and check the version header. /** @var string $header */ $header = Core::ourSubstr($ciphertext, 0, Core::HEADER_VERSION_SIZE); if ($header !== Core::CURRENT_VERSION) { throw new Ex\WrongKeyOrModifiedCiphertextException( 'Bad version header.' ); } // Get the salt. /** @var string $salt */ $salt = Core::ourSubstr( $ciphertext, Core::HEADER_VERSION_SIZE, Core::SALT_BYTE_SIZE ); Core::ensureTrue(\is_string($salt)); // Get the IV. /** @var string $iv */ $iv = Core::ourSubstr( $ciphertext, Core::HEADER_VERSION_SIZE + Core::SALT_BYTE_SIZE, Core::BLOCK_BYTE_SIZE ); Core::ensureTrue(\is_string($iv)); // Get the HMAC. /** @var string $hmac */ $hmac = Core::ourSubstr( $ciphertext, Core::ourStrlen($ciphertext) - Core::MAC_BYTE_SIZE, Core::MAC_BYTE_SIZE ); Core::ensureTrue(\is_string($hmac)); // Get the actual encrypted ciphertext. /** @var string $encrypted */ $encrypted = Core::ourSubstr( $ciphertext, Core::HEADER_VERSION_SIZE + Core::SALT_BYTE_SIZE + Core::BLOCK_BYTE_SIZE, Core::ourStrlen($ciphertext) - Core::MAC_BYTE_SIZE - Core::SALT_BYTE_SIZE - Core::BLOCK_BYTE_SIZE - Core::HEADER_VERSION_SIZE ); Core::ensureTrue(\is_string($encrypted)); // Derive the separate encryption and authentication keys from the key // or password, whichever it is. $keys = $secret->deriveKeys($salt); if (self::verifyHMAC($hmac, $header . $salt . $iv . $encrypted, $keys->getAuthenticationKey())) { $plaintext = self::plainDecrypt($encrypted, $keys->getEncryptionKey(), $iv, Core::CIPHER_METHOD); return $plaintext; } else { throw new Ex\WrongKeyOrModifiedCiphertextException( 'Integrity check failed.' ); } } /** * Raw unauthenticated encryption (insecure on its own). * * @param string $plaintext * @param string $key * @param string $iv * * @throws Ex\EnvironmentIsBrokenException * * @return string */ protected static function plainEncrypt( $plaintext, #[\SensitiveParameter] $key, #[\SensitiveParameter] $iv ) { Core::ensureConstantExists('OPENSSL_RAW_DATA'); Core::ensureFunctionExists('openssl_encrypt'); /** @var string $ciphertext */ $ciphertext = \openssl_encrypt( $plaintext, Core::CIPHER_METHOD, $key, OPENSSL_RAW_DATA, $iv ); Core::ensureTrue(\is_string($ciphertext), 'openssl_encrypt() failed'); return $ciphertext; } /** * Raw unauthenticated decryption (insecure on its own). * * @param string $ciphertext * @param string $key * @param string $iv * @param string $cipherMethod * * @throws Ex\EnvironmentIsBrokenException * * @return string */ protected static function plainDecrypt( $ciphertext, #[\SensitiveParameter] $key, #[\SensitiveParameter] $iv, $cipherMethod ) { Core::ensureConstantExists('OPENSSL_RAW_DATA'); Core::ensureFunctionExists('openssl_decrypt'); /** @var string $plaintext */ $plaintext = \openssl_decrypt( $ciphertext, $cipherMethod, $key, OPENSSL_RAW_DATA, $iv ); Core::ensureTrue(\is_string($plaintext), 'openssl_decrypt() failed.'); return $plaintext; } /** * Verifies an HMAC without leaking information through side-channels. * * @param string $expected_hmac * @param string $message * @param string $key * * @throws Ex\EnvironmentIsBrokenException * * @return bool */ protected static function verifyHMAC( $expected_hmac, $message, #[\SensitiveParameter] $key ) { $message_hmac = \hash_hmac(Core::HASH_FUNCTION_NAME, $message, $key, true); return Core::hashEquals($message_hmac, $expected_hmac); } }