Bitrix API

ASN1

Functions for interacting with ASN.1 data streams.

Note that this class only implements a small subset of the ASN.1 DER, and should not be used as a general-purpose ASN.1 encoder/decoder.

Table of Contents

Constants

APPLICATION_CLASS  = 0x40
BIT_STRING  = 0x3
CONTEXT_CLASS  = 0x80
INTEGER_TYPE  = 0x2
NULL_TYPE  = 0x5
OCTET_STRING  = 0x4
OID  = 0x6
PRIVATE_CLASS  = 0xc0
SEQUENCE  = 0x10
UNIVERSAL_CLASS  = 0x0

Methods

decodeOID()  : mixed
Decodes a DER-encoded object identifier into a string.
encodeDER()  : string
Encodes a value into a DER object.
encodeOID()  : mixed
Encodes a string into a DER-encoded object identifier.
readDER()  : int
Reads a DER stream and decodes a single object

Constants

APPLICATION_CLASS

public mixed APPLICATION_CLASS = 0x40

BIT_STRING

public mixed BIT_STRING = 0x3

CONTEXT_CLASS

public mixed CONTEXT_CLASS = 0x80

INTEGER_TYPE

public mixed INTEGER_TYPE = 0x2

NULL_TYPE

public mixed NULL_TYPE = 0x5

OCTET_STRING

public mixed OCTET_STRING = 0x4

OID

public mixed OID = 0x6

PRIVATE_CLASS

public mixed PRIVATE_CLASS = 0xc0

SEQUENCE

public mixed SEQUENCE = 0x10

UNIVERSAL_CLASS

public mixed UNIVERSAL_CLASS = 0x0

Methods

decodeOID()

Decodes a DER-encoded object identifier into a string.

public static decodeOID(mixed $oid) : mixed
Parameters
$oid : mixed
Tags
@return

$string the decoded string

encodeDER()

Encodes a value into a DER object.

public static encodeDER(int $type[, string $value = '' ][, bool $primitive = true ][, mixed $class = 0 ]) : string
Parameters
$type : int

the DER tag of the object

$value : string = ''

the value to encode

$primitive : bool = true

whether the object is of a primitive or constructed type

$class : mixed = 0
Return values
string —

the encoded object

encodeOID()

Encodes a string into a DER-encoded object identifier.

public static encodeOID(mixed $str) : mixed
Parameters
$str : mixed
Tags
@return

$string the binary DER-encoded object identifier

readDER()

Reads a DER stream and decodes a single object

public static readDER(string $der, int $offset, mixed &$data[, bool $ignore_bit_strings = FALSE ]) : int
Parameters
$der : string

the data stream

$offset : int

the offset of the data stream containing the object to decode

$data : mixed

the decoded object

$ignore_bit_strings : bool = FALSE

whether to refrain from moving the offset when reading a bit string - this allows the caller to read the bit string manually

Return values
int —

the number of bytes read, or 0 if there is an error


        

        
    




    

    

                                

                

                                
    

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