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remove throw, catching exceptions in place

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tracer 2022-09-29 19:22:33 +02:00
parent 0268262e98
commit 19576dd6b7
1 changed files with 34 additions and 30 deletions
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64
src/Controller/EncryptionController.php
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@ -15,19 +15,21 @@ class EncryptionController
* @param string $message - message to encrypt
* @param string $key - encryption key
* @return string
* @throws SodiumException
* @throws Exception
*/
function safeEncrypt(string $message, string $key): string
{
$binKey = sodium_hex2bin(string: $key);
$nonce = random_bytes(length: SODIUM_CRYPTO_SECRETBOX_NONCEBYTES);
try {
$binKey = sodium_hex2bin(string: $key);
$nonce = random_bytes(length: SODIUM_CRYPTO_SECRETBOX_NONCEBYTES);
$cipher = base64_encode(string: $nonce . sodium_crypto_secretbox(message: $message, nonce: $nonce, key: $binKey));
sodium_memzero(string: $message);
sodium_memzero(string: $key);
sodium_memzero(string: $binKey);
return $cipher;
$cipher = base64_encode(string: $nonce . sodium_crypto_secretbox(message: $message, nonce: $nonce, key: $binKey));
sodium_memzero(string: $message);
sodium_memzero(string: $key);
sodium_memzero(string: $binKey);
return $cipher;
} catch (Exception|SodiumException $e) {
die($e->getMessage() . PHP_EOL);
}
}
/**
@ -36,32 +38,34 @@ class EncryptionController
* @param string $encrypted - message encrypted with safeEncrypt()
* @param string $key - encryption key
* @return string
* @throws SodiumException
* @throws Exception
*/
function safeDecrypt(string $encrypted, string $key): string
{
$binKey = sodium_hex2bin(string: $key);
try {
$binKey = sodium_hex2bin(string: $key);
$decoded = base64_decode(string: $encrypted);
if ($decoded === false) {
throw new Exception(message: 'Decoding broken. Wrong payload.');
$decoded = base64_decode(string: $encrypted);
if ($decoded === false) {
throw new Exception(message: 'Decoding broken. Wrong payload.');
}
if (mb_strlen(string: $decoded, encoding: '8bit') < (SODIUM_CRYPTO_SECRETBOX_NONCEBYTES + SODIUM_CRYPTO_SECRETBOX_MACBYTES)) {
throw new Exception(message: 'Decoding broken. Incomplete message.');
}
$nonce = mb_substr(string: $decoded, start: 0, length: SODIUM_CRYPTO_SECRETBOX_NONCEBYTES, encoding: '8bit');
$ciphertext = mb_substr(string: $decoded, start: SODIUM_CRYPTO_SECRETBOX_NONCEBYTES, length: null, encoding: '8bit');
$plain = sodium_crypto_secretbox_open(ciphertext: $ciphertext, nonce: $nonce, key: $binKey);
if ($plain === false) {
throw new Exception(message: ' Incorrect key.');
}
sodium_memzero(string: $ciphertext);
sodium_memzero(string: $key);
return $plain;
} catch(Exception|SodiumException $e) {
die($e->getMessage());
}
if (mb_strlen(string: $decoded, encoding: '8bit') < (SODIUM_CRYPTO_SECRETBOX_NONCEBYTES + SODIUM_CRYPTO_SECRETBOX_MACBYTES)) {
throw new Exception(message: 'Decoding broken. Incomplete message.');
}
$nonce = mb_substr(string: $decoded, start: 0, length: SODIUM_CRYPTO_SECRETBOX_NONCEBYTES, encoding: '8bit');
$ciphertext = mb_substr(string: $decoded, start: SODIUM_CRYPTO_SECRETBOX_NONCEBYTES, length: null, encoding: '8bit');
$plain = sodium_crypto_secretbox_open(ciphertext: $ciphertext, nonce: $nonce, key: $binKey);
if ($plain === false) {
throw new Exception(message: ' Incorrect key.');
}
sodium_memzero(string: $ciphertext);
sodium_memzero(string: $key);
return $plain;
}
}