Asn DataFlex Reference Documentation

Asn

For creating, loading, parsing, converting, and saving ASN.1

Object Creation

Handle hoAsn
Get Create(RefClass(cComChilkatAsn)) to hoAsn

Properties

Function ComBoolValue Returns Boolean
Procedure Set ComBoolValue Boolean value

Introduced in version 9.5.0.49

The ASN.1 item's boolean value if it is a boolean item.

Function ComConstructed Returns Boolean

Introduced in version 9.5.0.49

True if this ASN.1 item is a constructed item. Sequence and Set items are constructed and can contain sub-items. All other tags (boolean, integer, octets, utf8String, etc.) are primitive (non-constructed).

Function ComContentStr Returns String
Procedure Set ComContentStr String value

Introduced in version 9.5.0.49

The ASN.1 item's content if it is an ASN.1 string type (such as Utf8String, BmpString, PrintableString, VisibleString, T61String, IA5String, NumericString, or UniversalString).

Function ComDebugLogFilePath Returns String
Procedure Set ComDebugLogFilePath String value

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

  1. a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
  2. the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
  3. there is an internal problem (bug) in the Chilkat code that causes the hang.

Function ComIntValue Returns Integer
Procedure Set ComIntValue Integer value

Introduced in version 9.5.0.49

The ASN.1 item's integer value if it is a small integer item.

Function ComLastBinaryResult Returns Variant

Introduced in version 9.5.0.52

The binary data returned by the last (binary data returning) method called. Only available if Chilkat.Global.KeepBinaryResult is set to True. This provides a means for obtaining large varbinary results in the SQL Server environment (where limitations exist in getting large amounts of data returned by method calls, but where temp tables can be used for binary properties).

Function ComLastErrorHtml Returns String

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

Function ComLastErrorText Returns String

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

Concept of LastErrorText

LastErrorText Standard Information

Function ComLastErrorXml Returns String

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

Function ComLastMethodSuccess Returns Boolean
Procedure Set ComLastMethodSuccess Boolean value

Introduced in version 9.5.0.52

Indicate whether the last method call succeeded or failed. A value of True indicates success, a value of False indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = True and failure = False.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to True. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

Function ComLastStringResult Returns String

Introduced in version 9.5.0.52

The string return value of the last (string returning) method called. Only available if Chilkat.Global.KeepStringResult is set to True. This provides a means for obtaining large string results in the SQL Server environment (where limitations exist in getting long strings returned by method calls, but where temp tables can be used for string properties).

Long Strings Returned by ActiveX Methods in SQL Server

Function ComLastStringResultLen Returns Integer

Introduced in version 9.5.0.53

The length, in characters, of the string contained in the LastStringResult property.

Function ComNumSubItems Returns Integer

Introduced in version 9.5.0.49

The number of sub-items contained within this ASN.1 item. Only constructed items, such as Sequence and Set will contain sub-iitems. Primitive items such as OIDs, octet strings, integers, etc. will never contain sub-items.

Function ComTag Returns String

Introduced in version 9.5.0.49

The ASN.1 item's tag as a descriptive string. Possible values are:

boolean
integer
bitString
octets
null
oid
utf8String
relativeOid
sequence
set
numericString
printableString
t61String
ia5String
utcTime
bmpString

Function ComTagValue Returns Integer

Introduced in version 9.5.0.49

The ASN.1 item's tag as a integer value. The integer values for possible tags are as follows:

boolean (1)
integer (2)
bitString (3)
octets (4)
null (5)
oid (6)
utf8String (12)
relativeOid (13)
sequence (16)
set (17)
numericString (18)
printableString (19)
t61String (20)
ia5String (22)
utcTime (23)
bmpString (30)

Function ComVerboseLogging Returns Boolean
Procedure Set ComVerboseLogging Boolean value

If set to True, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is False. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

Function ComVersion Returns String

Version of the component/library, such as "9.5.0.63"

Methods

Function ComAppendBigInt String encodedBytes String encoding Returns Boolean

Introduced in version 9.5.0.49

Appends an ASN.1 integer, but one that is a big (huge) integer that is too large to be represented by an integer variable. The bytes composing the integer are passed in encoded string format (such as base64, hex, etc.). The byte order must be big-endian. The encoding may be any of the following encodings: "Base64", "Hex", "Base58", "modBase64", "Base32", "UU", "QP" (for quoted-printable), "URL" (for url-encoding), "Q", "B", "url_oath", "url_rfc1738", "url_rfc2396", and "url_rfc3986". The encoding name is case insensitive (for example, both "Base64" and "base64" are treated the same).

Returns True for success, False for failure.

Using the ASN.1 API to Create a Certificate Request (CSR)

Function ComAppendBits String encodedBytes String encoding Returns Boolean

Introduced in version 9.5.0.49

Appends an ASN.1 bit string to the caller's sub-items. The bytes containing the bits are passed in encoded string format (such as base64, hex, etc.). The byte order must be big-endian (MSB first). The encoding may be any of the following encodings: "Base64", "Hex", "Base58", "modBase64", "Base32", "UU", "QP" (for quoted-printable), "URL" (for url-encoding), "Q", "B", "url_oath", "url_rfc1738", "url_rfc2396", and "url_rfc3986". The encoding name is case insensitive (for example, both "Base64" and "base64" are treated the same).

Returns True for success, False for failure.

Function ComAppendBool Boolean value Returns Boolean

Introduced in version 9.5.0.49

Appends an ASN.1 boolean item to the caller's sub-items. Items may only be appended to constructed data types such as Sequence and Set.

Returns True for success, False for failure.

Function ComAppendContextConstructed Integer tag Returns Boolean

Introduced in version 9.5.0.50

Appends an ASN.1 context-specific constructed item to the caller's sub-items.

Returns True for success, False for failure.

Using the ASN.1 API to Create a Certificate Request (CSR)

Function ComAppendContextPrimitive Integer tag String encodedBytes String encoding Returns Boolean

Introduced in version 9.5.0.50

Appends an ASN.1 context-specific primitive item to the caller's sub-items. The bytes are passed in encoded string format (such as base64, hex, etc.). The encoding may be any of the following encodings: "Base64", "Hex", "Base58", "modBase64", "Base32", "UU", "QP" (for quoted-printable), "URL" (for url-encoding), "Q", "B", "url_oath", "url_rfc1738", "url_rfc2396", and "url_rfc3986". The encoding name is case insensitive (for example, both "Base64" and "base64" are treated the same).

Returns True for success, False for failure.

Function ComAppendInt Integer value Returns Boolean

Introduced in version 9.5.0.49

Appends an ASN.1 integer item to the caller's sub-items. Items may only be appended to constructed data types such as Sequence and Set.

Returns True for success, False for failure.

Function ComAppendNull Returns Boolean

Introduced in version 9.5.0.49

Appends an ASN.1 null item to the caller's sub-items. Items may only be appended to constructed data types such as Sequence and Set.

Returns True for success, False for failure.

Function ComAppendOctets String encodedBytes String encoding Returns Boolean

Introduced in version 9.5.0.49

Appends an ASN.1 octet string to the caller's sub-items. The bytes are passed in encoded string format (such as base64, hex, etc.). The encoding may be any of the following encodings: "Base64", "Hex", "Base58", "modBase64", "Base32", "UU", "QP" (for quoted-printable), "URL" (for url-encoding), "Q", "B", "url_oath", "url_rfc1738", "url_rfc2396", and "url_rfc3986". The encoding name is case insensitive (for example, both "Base64" and "base64" are treated the same).

Returns True for success, False for failure.

Function ComAppendOid String oid Returns Boolean

Introduced in version 9.5.0.49

Appends an ASN.1 OID (object identifier) to the caller's sub-items. The OID is passed in string form, such as "1.2.840.113549.1.9.1".

Returns True for success, False for failure.

Function ComAppendSequence Returns Boolean

Introduced in version 9.5.0.49

Appends an ASN.1 sequence item to the caller's sub-items.

Returns True for success, False for failure.

Using the ASN.1 API to Create a Certificate Request (CSR)

Function ComAppendSequence2 Returns Boolean

Introduced in version 9.5.0.50

Appends an ASN.1 sequence item to the caller's sub-items, and updates the internal reference to point to the newly appended sequence item.

Returns True for success, False for failure.

Function ComAppendSequenceR Returns cComChilkatAsn

Introduced in version 9.5.0.50

Appends an ASN.1 sequence item to the caller's sub-items, and returns the newly appended sequence item.

Returns null on failure

Function ComAppendSet Returns Boolean

Introduced in version 9.5.0.49

Appends an ASN.1 set item to the caller's sub-items.

Returns True for success, False for failure.

Using the ASN.1 API to Create a Certificate Request (CSR)

Function ComAppendSet2 Returns Boolean

Introduced in version 9.5.0.50

Appends an ASN.1 set item to the caller's sub-items, and updates the internal reference to point to the newly appended set item.

Returns True for success, False for failure.

Function ComAppendSetR Returns cComChilkatAsn

Introduced in version 9.5.0.50

Appends an ASN.1 set item to the caller's sub-items, and returns the newly appended set item.

Returns null on failure

Function ComAppendString String strType String value Returns Boolean

Introduced in version 9.5.0.49

Appends a string item to the caller's sub-items. The strType specifies the type of string to be added. It may be "utf8", "ia5", "t61", "printable", "visible", "numeric", "universal", or "bmp". The value must conform to the ASN.1 restrictions imposed for a given string type. The "utf8", "bmp", and "universal" types have no restrictions on what characters are allowed. In general, unless a specific type of string is required, choose the "utf8" type.

Returns True for success, False for failure.

Function ComAppendTime String timeFormat String dateTimeStr Returns Boolean

Introduced in version 9.5.0.49

Appends a UTCTime item to the caller's sub-items. The timeFormat specifies the format of the dateTimeStr. It should be set to "utc". (In the future, this method will be expanded to append GeneralizedTime items by using "generalized" for timeFormat.) To append the current date/time, set dateTimeStr equal to the empty string or the keyword "now". Otherwise, the dateTimeStr should be in the UTC time format "YYMMDDhhmm[ss]Z" or "YYMMDDhhmm[ss](+|-)hhmm".

Returns True for success, False for failure.

Function ComAsnToXml Returns String

Introduced in version 9.5.0.49

Converts ASN.1 to XML and returns the XML string.

Returns null on failure

Convert ASN.1 to/from Binary DER, XML, and Base64

Load PEM ASN.1 and Convert to XML

Function ComDeleteSubItem Integer index Returns Boolean

Introduced in version 9.5.0.49

Discards the Nth sub-item. (The 1st sub-item is at index 0.)

Returns True for success, False for failure.

Function ComGetBinaryDer Returns Variant

Introduced in version 9.5.0.49

Returns the ASN.1 in binary DER form.

Returns null on failure

Function ComGetEncodedContent String encoding Returns String

Introduced in version 9.5.0.49

Returns the content of the ASN.1 item in encoded string form. The encoding may be any of the following encodings: "Base64", "Hex", "Base58", "modBase64", "Base32", "UU", "QP" (for quoted-printable), "URL" (for url-encoding), "Q", "B", "url_oath", "url_rfc1738", "url_rfc2396", and "url_rfc3986". The encoding name is case insensitive (for example, both "Base64" and "base64" are treated the same).

Returns null on failure

Function ComGetEncodedDer String encoding Returns String

Introduced in version 9.5.0.49

Returns the binary DER in encoded string form. The encoding indicates the encoding and can be "base64", "hex", "uu", "quoted-printable", "base32", or "modbase64".

Returns null on failure

Convert ASN.1 to/from Binary DER, XML, and Base64

Using the ASN.1 API to Create a Certificate Request (CSR)

Function ComGetLastSubItem Returns cComChilkatAsn

Introduced in version 9.5.0.49

Returns the last ASN.1 sub-item. This method can be called immediately after any Append* method to access the appended item.

Returns null on failure

Function ComGetSubItem Integer index Returns cComChilkatAsn

Introduced in version 9.5.0.49

Returns the Nth ASN.1 sub-item. The 1st sub-item is at index 0.

Returns null on failure

Using the ASN.1 API to Create a Certificate Request (CSR)

Function ComLoadAsnXml String xmlStr Returns Boolean

Introduced in version 9.5.0.49

Loads ASN.1 from the XML representation (such as that created by the AsnToXml method).

Returns True for success, False for failure.

Convert ASN.1 to/from Binary DER, XML, and Base64

Function ComLoadBinary Variant derBytes Returns Boolean

Introduced in version 9.5.0.49

Loads ASN.1 from binary DER.

Returns True for success, False for failure.

Function ComLoadBinaryFile String path Returns Boolean

Introduced in version 9.5.0.49

Loads ASN.1 from a binary DER file.

Returns True for success, False for failure.

Convert ASN.1 to/from Binary DER, XML, and Base64

Function ComLoadEncoded String asnContent String encoding Returns Boolean

Introduced in version 9.5.0.49

Loads ASN.1 from an encoded string. The encoding can be "base64", "hex", "uu", "quoted-printable", "base32", or "modbase64".

Returns True for success, False for failure.

Convert ASN.1 to/from Binary DER, XML, and Base64

Function ComSetEncodedContent String encodedBytes String encoding Returns Boolean

Introduced in version 9.5.0.49

Sets the content of this primitive ASN.1 item. The encoding may be any of the following encodings: "Base64", "Hex", "Base58", "modBase64", "Base32", "UU", "QP" (for quoted-printable), "URL" (for url-encoding), "Q", "B", "url_oath", "url_rfc1738", "url_rfc2396", and "url_rfc3986". The encoding name is case insensitive (for example, both "Base64" and "base64" are treated the same).

Returns True for success, False for failure.

Function ComWriteBinaryDer String path Returns Boolean

Introduced in version 9.5.0.49

Writes the ASN.1 in binary DER form to a file.

Returns True for success, False for failure.

Convert ASN.1 to/from Binary DER, XML, and Base64

Using the ASN.1 API to Create a Certificate Request (CSR)