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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\XMLSecurity\XML\xenc; |
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use DOMElement; |
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use SimpleSAML\Assert\Assert; |
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use SimpleSAML\XML\Exception\InvalidDOMElementException; |
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use SimpleSAML\XML\Exception\MissingElementException; |
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use SimpleSAML\XML\Exception\TooManyElementsException; |
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use SimpleSAML\XML\SchemaValidatableElementInterface; |
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use SimpleSAML\XML\SchemaValidatableElementTrait; |
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use SimpleSAML\XMLSecurity\XML\ds\KeyInfo; |
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use SimpleSAML\XMLSecurity\XML\xenc\CipherData; |
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use SimpleSAML\XMLSecurity\XML\xenc\EncryptionMethod; |
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use function array_pop; |
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/** |
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* Class containing encrypted data. |
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* |
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* Note: <xenc:EncryptionProperties> elements are not supported. |
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* |
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* @package simplesamlphp/xml-security |
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*/ |
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final class EncryptedData extends AbstractEncryptedType implements SchemaValidatableElementInterface |
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{ |
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use SchemaValidatableElementTrait; |
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/** |
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* @inheritDoc |
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* |
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* @throws \SimpleSAML\XML\Exception\InvalidDOMElementException |
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* If the qualified name of the supplied element is wrong |
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* @throws \SimpleSAML\XML\Exception\MissingElementException |
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* If one of the mandatory child-elements is missing |
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* @throws \SimpleSAML\XML\Exception\TooManyElementsException |
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* If too many child-elements of a type are specified |
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*/ |
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final public static function fromXML(DOMElement $xml): static |
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{ |
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Assert::same($xml->localName, 'EncryptedData', InvalidDOMElementException::class); |
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Assert::same($xml->namespaceURI, EncryptedData::NS, InvalidDOMElementException::class); |
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$cipherData = CipherData::getChildrenOfClass($xml); |
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Assert::minCount( |
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$cipherData, |
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1, |
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'At least one CipherData element found in <xenc:EncryptedData>.', |
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MissingElementException::class, |
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); |
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Assert::maxCount( |
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$cipherData, |
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1, |
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'No or more than one CipherData element found in <xenc:EncryptedData>.', |
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TooManyElementsException::class, |
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); |
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$encryptionMethod = EncryptionMethod::getChildrenOfClass($xml); |
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Assert::maxCount( |
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$encryptionMethod, |
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1, |
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'No more than one EncryptionMethod element allowed in <xenc:EncryptedData>.', |
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TooManyElementsException::class, |
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); |
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$keyInfo = KeyInfo::getChildrenOfClass($xml); |
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Assert::maxCount( |
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$keyInfo, |
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1, |
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'No more than one KeyInfo element allowed in <xenc:EncryptedData>.', |
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TooManyElementsException::class, |
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); |
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return new static( |
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$cipherData[0], |
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self::getOptionalAttribute($xml, 'Id', null), |
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self::getOptionalAttribute($xml, 'Type', null), |
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self::getOptionalAttribute($xml, 'MimeType', null), |
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self::getOptionalAttribute($xml, 'Encoding', null), |
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array_pop($encryptionMethod), |
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array_pop($keyInfo), |
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); |
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} |
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} |
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simplesamlphp /
xml-security
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