WordPoints /
wordpoints
| @@ 433-466 (lines=34) @@ | ||
| 430 | * @param string $publicKey |
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| 431 | * @return string |
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| 432 | */ |
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| 433 | public static function box_seal($message, $publicKey) |
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| 434 | { |
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| 435 | /** @var string $ephemeralKeypair */ |
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| 436 | $ephemeralKeypair = self::box_keypair(); |
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| 437 | ||
| 438 | /** @var string $ephemeralSK */ |
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| 439 | $ephemeralSK = self::box_secretkey($ephemeralKeypair); |
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| 440 | ||
| 441 | /** @var string $ephemeralPK */ |
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| 442 | $ephemeralPK = self::box_publickey($ephemeralKeypair); |
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| 443 | ||
| 444 | /** @var string $nonce */ |
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| 445 | $nonce = self::generichash( |
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| 446 | $ephemeralPK . $publicKey, |
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| 447 | '', |
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| 448 | 24 |
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| 449 | ); |
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| 450 | ||
| 451 | /** @var string $keypair - The combined keypair used in crypto_box() */ |
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| 452 | $keypair = self::box_keypair_from_secretkey_and_publickey($ephemeralSK, $publicKey); |
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| 453 | ||
| 454 | /** @var string $ciphertext Ciphertext + MAC from crypto_box */ |
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| 455 | $ciphertext = self::box($message, $nonce, $keypair); |
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| 456 | try { |
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| 457 | ParagonIE_Sodium_Compat::memzero($ephemeralKeypair); |
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| 458 | ParagonIE_Sodium_Compat::memzero($ephemeralSK); |
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| 459 | ParagonIE_Sodium_Compat::memzero($nonce); |
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| 460 | } catch (Error $ex) { |
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| 461 | $ephemeralKeypair = null; |
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| 462 | $ephemeralSK = null; |
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| 463 | $nonce = null; |
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| 464 | } |
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| 465 | return $ephemeralPK . $ciphertext; |
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| 466 | } |
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| 467 | ||
| 468 | /** |
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| 469 | * Opens a message encrypted via box_seal(). |
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| @@ 433-466 (lines=34) @@ | ||
| 430 | * @param string $publicKey |
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| 431 | * @return string |
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| 432 | */ |
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| 433 | public static function box_seal($message, $publicKey) |
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| 434 | { |
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| 435 | /** @var string $ephemeralKeypair */ |
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| 436 | $ephemeralKeypair = self::box_keypair(); |
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| 437 | ||
| 438 | /** @var string $ephemeralSK */ |
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| 439 | $ephemeralSK = self::box_secretkey($ephemeralKeypair); |
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| 440 | ||
| 441 | /** @var string $ephemeralPK */ |
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| 442 | $ephemeralPK = self::box_publickey($ephemeralKeypair); |
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| 443 | ||
| 444 | /** @var string $nonce */ |
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| 445 | $nonce = self::generichash( |
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| 446 | $ephemeralPK . $publicKey, |
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| 447 | '', |
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| 448 | 24 |
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| 449 | ); |
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| 450 | ||
| 451 | /** @var string $keypair - The combined keypair used in crypto_box() */ |
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| 452 | $keypair = self::box_keypair_from_secretkey_and_publickey($ephemeralSK, $publicKey); |
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| 453 | ||
| 454 | /** @var string $ciphertext Ciphertext + MAC from crypto_box */ |
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| 455 | $ciphertext = self::box($message, $nonce, $keypair); |
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| 456 | try { |
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| 457 | ParagonIE_Sodium_Compat::memzero($ephemeralKeypair); |
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| 458 | ParagonIE_Sodium_Compat::memzero($ephemeralSK); |
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| 459 | ParagonIE_Sodium_Compat::memzero($nonce); |
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| 460 | } catch (Error $ex) { |
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| 461 | $ephemeralKeypair = null; |
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| 462 | $ephemeralSK = null; |
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| 463 | $nonce = null; |
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| 464 | } |
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| 465 | return $ephemeralPK . $ciphertext; |
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| 466 | } |
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| 467 | ||
| 468 | /** |
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| 469 | * Opens a message encrypted via box_seal(). |
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