WordPoints /
wordpoints
| @@ 477-513 (lines=37) @@ | ||
| 474 | * @param string $keypair |
|
| 475 | * @return string |
|
| 476 | */ |
|
| 477 | public static function box_seal_open($message, $keypair) |
|
| 478 | { |
|
| 479 | /** @var string $ephemeralPK */ |
|
| 480 | $ephemeralPK = ParagonIE_Sodium_Core_Util::substr($message, 0, 32); |
|
| 481 | ||
| 482 | /** @var string $ciphertext (ciphertext + MAC) */ |
|
| 483 | $ciphertext = ParagonIE_Sodium_Core_Util::substr($message, 32); |
|
| 484 | ||
| 485 | /** @var string $secretKey */ |
|
| 486 | $secretKey = self::box_secretkey($keypair); |
|
| 487 | ||
| 488 | /** @var string $publicKey */ |
|
| 489 | $publicKey = self::box_publickey($keypair); |
|
| 490 | ||
| 491 | /** @var string $nonce */ |
|
| 492 | $nonce = self::generichash( |
|
| 493 | $ephemeralPK . $publicKey, |
|
| 494 | '', |
|
| 495 | 24 |
|
| 496 | ); |
|
| 497 | ||
| 498 | /** @var string $keypair */ |
|
| 499 | $keypair = self::box_keypair_from_secretkey_and_publickey($secretKey, $ephemeralPK); |
|
| 500 | ||
| 501 | /** @var string $m */ |
|
| 502 | $m = self::box_open($ciphertext, $nonce, $keypair); |
|
| 503 | try { |
|
| 504 | ParagonIE_Sodium_Compat::memzero($secretKey); |
|
| 505 | ParagonIE_Sodium_Compat::memzero($ephemeralPK); |
|
| 506 | ParagonIE_Sodium_Compat::memzero($nonce); |
|
| 507 | } catch (Error $ex) { |
|
| 508 | $secretKey = null; |
|
| 509 | $ephemeralPK = null; |
|
| 510 | $nonce = null; |
|
| 511 | } |
|
| 512 | return $m; |
|
| 513 | } |
|
| 514 | ||
| 515 | /** |
|
| 516 | * Used by crypto_box() to get the crypto_secretbox() key. |
|
| @@ 477-513 (lines=37) @@ | ||
| 474 | * @param string $keypair |
|
| 475 | * @return string |
|
| 476 | */ |
|
| 477 | public static function box_seal_open($message, $keypair) |
|
| 478 | { |
|
| 479 | /** @var string $ephemeralPK */ |
|
| 480 | $ephemeralPK = ParagonIE_Sodium_Core32_Util::substr($message, 0, 32); |
|
| 481 | ||
| 482 | /** @var string $ciphertext (ciphertext + MAC) */ |
|
| 483 | $ciphertext = ParagonIE_Sodium_Core32_Util::substr($message, 32); |
|
| 484 | ||
| 485 | /** @var string $secretKey */ |
|
| 486 | $secretKey = self::box_secretkey($keypair); |
|
| 487 | ||
| 488 | /** @var string $publicKey */ |
|
| 489 | $publicKey = self::box_publickey($keypair); |
|
| 490 | ||
| 491 | /** @var string $nonce */ |
|
| 492 | $nonce = self::generichash( |
|
| 493 | $ephemeralPK . $publicKey, |
|
| 494 | '', |
|
| 495 | 24 |
|
| 496 | ); |
|
| 497 | ||
| 498 | /** @var string $keypair */ |
|
| 499 | $keypair = self::box_keypair_from_secretkey_and_publickey($secretKey, $ephemeralPK); |
|
| 500 | ||
| 501 | /** @var string $m */ |
|
| 502 | $m = self::box_open($ciphertext, $nonce, $keypair); |
|
| 503 | try { |
|
| 504 | ParagonIE_Sodium_Compat::memzero($secretKey); |
|
| 505 | ParagonIE_Sodium_Compat::memzero($ephemeralPK); |
|
| 506 | ParagonIE_Sodium_Compat::memzero($nonce); |
|
| 507 | } catch (Error $ex) { |
|
| 508 | $secretKey = null; |
|
| 509 | $ephemeralPK = null; |
|
| 510 | $nonce = null; |
|
| 511 | } |
|
| 512 | return $m; |
|
| 513 | } |
|
| 514 | ||
| 515 | /** |
|
| 516 | * Used by crypto_box() to get the crypto_secretbox() key. |
|
