DERNode

Overview

DERNode is a class in Aspose.Pdf FOSS for Java.

Represents a parsed ASN.1 DER (Distinguished Encoding Rules) node.

Name	Type	Access	Description
`tag`	`int`	Read	Returns the tag byte.
`value`	`byte[]`	Read	Returns the raw value bytes.
`children`	`List<DERNode>`	Read	Returns child nodes (for constructed types).
`constructed`	`boolean`	Read	Returns true if this is a constructed type.
`childCount`	`int`	Read	Returns the number of children.
`sequence`	`boolean`	Read
`set`	`boolean`	Read
`octetString`	`boolean`	Read
`integer`	`BigInteger`	Read	Extracts an INTEGER value.
`oID`	`String`	Read	Decodes an OID to dotted string.
`bitString`	`boolean`	Read
`null`	`boolean`	Read
`string`	`String`	Read	Extracts a string value (PrintableString, UTF8String, IA5String, etc.).
`encodedSize`	`int`	Read	Returns the total DER-encoded size of this node.

Signature	Description
`parse(data: byte[])` → `DERNode`	Parses a DER-encoded byte array into a node tree.
`parse(data: byte[], offset: int, limit: int)` → `DERNode`	Parses starting at offset, consuming up to limit.
`parseAll(data: byte[], offset: int, limit: int)` → `List<DERNode>`	Parses all sequential nodes between offset and limit.
`getTag()` → `int`	Returns the tag byte.
`getValue()` → `byte[]`	Returns the raw value bytes.
`getChildren()` → `List<DERNode>`	Returns child nodes (for constructed types).
`isConstructed()` → `boolean`	Returns true if this is a constructed type.
`getChild(index: int)` → `DERNode`	Returns the child at the given index.
`getChildCount()` → `int`	Returns the number of children.
`isSequence()` → `boolean`
`isSet()` → `boolean`
`isOctetString()` → `boolean`
`isInteger()` → `boolean`
`isOID()` → `boolean`
`isBitString()` → `boolean`
`isNull()` → `boolean`
`isContextTag(n: int)` → `boolean`
`getInteger()` → `BigInteger`	Extracts an INTEGER value.
`getOID()` → `String`	Decodes an OID to dotted string.
`getString()` → `String`	Extracts a string value (PrintableString, UTF8String, IA5String, etc.).
`getEncodedSize()` → `int`	Returns the total DER-encoded size of this node.
`toString()` → `String`