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<?php |
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declare(strict_types = 1); |
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namespace Sop\PKCS5\ASN1\AlgorithmIdentifier; |
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use Sop\ASN1\Element; |
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use Sop\ASN1\Type\Constructed\Sequence; |
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use Sop\ASN1\Type\Primitive\Integer; |
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use Sop\ASN1\Type\Primitive\OctetString; |
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use Sop\ASN1\Type\UnspecifiedType; |
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use Sop\CryptoTypes\AlgorithmIdentifier\Cipher\BlockCipherAlgorithmIdentifier; |
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use Sop\CryptoTypes\AlgorithmIdentifier\SpecificAlgorithmIdentifier; |
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use Sop\PKCS5\HashFunc\HashFunc; |
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/* |
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From RFC 2898 - A.3 PBES1: |
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For each OID, the parameters field associated with the OID in an |
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AlgorithmIdentifier shall have type PBEParameter: |
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PBEParameter ::= SEQUENCE { |
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salt OCTET STRING (SIZE(8)), |
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iterationCount INTEGER } |
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From RFC 7292 - Appendix C. Keys and IVs for Password Privacy Mode: |
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This standard does not prescribe a length for the salt either. |
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Ideally, the salt is as long as the output of the hash function being |
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used and consists of completely random bits. |
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pkcs-12PbeParams ::= SEQUENCE { |
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salt OCTET STRING, |
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iterations INTEGER |
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} |
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*/ |
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/** |
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* Base class for PBES1 encryption scheme. |
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* |
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* @see https://tools.ietf.org/html/rfc2898#section-6.1 |
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* @see https://tools.ietf.org/html/rfc2898#appendix-A.3 |
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* @see https://tools.ietf.org/html/rfc7292#appendix-C |
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*/ |
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abstract class PBES1AlgorithmIdentifier extends PBEAlgorithmIdentifier |
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{ |
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/** |
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* Get the hash function used by the scheme. |
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* |
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* @return HashFunc |
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*/ |
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abstract public function hashFunc(): HashFunc; |
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/** |
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* Get the block cipher algorithm identifier used by the scheme. |
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* |
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* @return BlockCipherAlgorithmIdentifier |
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*/ |
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abstract public function blockCipher(): BlockCipherAlgorithmIdentifier; |
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/** |
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* {@inheritdoc} |
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* |
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* @return self |
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*/ |
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public static function fromASN1Params( |
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?UnspecifiedType $params = null): SpecificAlgorithmIdentifier |
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{ |
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if (!isset($params)) { |
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1 |
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throw new \UnexpectedValueException('No parameters.'); |
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} |
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8 |
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$seq = $params->asSequence(); |
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8 |
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$salt = $seq->at(0)->asOctetString()->string(); |
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8 |
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$iteration_count = $seq->at(1)->asInteger()->intNumber(); |
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return new static($salt, $iteration_count); |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @return Sequence |
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*/ |
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protected function _paramsASN1(): ?Element |
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{ |
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return new Sequence(new OctetString($this->_salt), |
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new Integer($this->_iterationCount)); |
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} |
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} |
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sop /
pkcs5
