Asn Delphi DLL Reference Documentation
Asn
Current Version: 10.0.0
For creating, loading, parsing, converting, and saving ASN.1
Create/Dispose
var myObject: HCkAsn; begin myObject := CkAsn_Create(); // ... CkAsn_Dispose(myObject); end;
Creates an instance of the HCkAsn object and returns a handle (i.e. a Pointer). The handle is passed in the 1st argument for the functions listed on this page.
Objects created by calling CkAsn_Create must be freed by calling this method. A memory leak occurs if a handle is not disposed by calling this function.
Properties
BoolValue
procedure CkAsn_putBoolValue(objHandle: HCkAsn; newPropVal: wordbool); stdcall;
The ASN.1 item's boolean value if it is a boolean item.
topConstructed
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).
topContentStr
procedure CkAsn_putContentStr(objHandle: HCkAsn; newPropVal: PWideChar); stdcall;
function CkAsn__contentStr(objHandle: HCkAsn): PWideChar; stdcall;
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).
See the notes about PWideChar memory ownership and validity.
topDebugLogFilePath
procedure CkAsn_putDebugLogFilePath(objHandle: HCkAsn; newPropVal: PWideChar); stdcall;
function CkAsn__debugLogFilePath(objHandle: HCkAsn): PWideChar; stdcall;
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:
- a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
- the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
- there is an internal problem (bug) in the Chilkat code that causes the hang.
See the notes about PWideChar memory ownership and validity.
IntValue
procedure CkAsn_putIntValue(objHandle: HCkAsn; newPropVal: Integer); stdcall;
The ASN.1 item's integer value if it is a small integer item.
topLastErrorHtml
function CkAsn__lastErrorHtml(objHandle: HCkAsn): PWideChar; stdcall;
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.
See the notes about PWideChar memory ownership and validity.
topLastErrorText
function CkAsn__lastErrorText(objHandle: HCkAsn): PWideChar; stdcall;
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.
See the notes about PWideChar memory ownership and validity.
LastErrorXml
function CkAsn__lastErrorXml(objHandle: HCkAsn): PWideChar; stdcall;
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.
See the notes about PWideChar memory ownership and validity.
topLastMethodSuccess
procedure CkAsn_putLastMethodSuccess(objHandle: HCkAsn; newPropVal: wordbool); stdcall;
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.
topNumSubItems
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.
topTag
function CkAsn__tag(objHandle: HCkAsn): PWideChar; stdcall;
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
See the notes about PWideChar memory ownership and validity.
topTagValue
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)top
VerboseLogging
procedure CkAsn_putVerboseLogging(objHandle: HCkAsn; newPropVal: wordbool); stdcall;
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.
topVersion
function CkAsn__version(objHandle: HCkAsn): PWideChar; stdcall;
Version of the component/library, such as "9.5.0.94"
See the notes about PWideChar memory ownership and validity.
Methods
AppendBigInt
encodedBytes: PWideChar;
encoding: PWideChar): wordbool; stdcall;
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.
AppendBits
encodedBytes: PWideChar;
encoding: PWideChar): wordbool; stdcall;
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.
topAppendBool
value: wordbool): wordbool; stdcall;
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.
topAppendContextConstructed
tag: Integer): wordbool; stdcall;
Appends an ASN.1 context-specific constructed item to the caller's sub-items.
Returns True for success, False for failure.
AppendContextPrimitive
tag: Integer;
encodedBytes: PWideChar;
encoding: PWideChar): wordbool; stdcall;
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.
topAppendInt
value: Integer): wordbool; stdcall;
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.
topAppendNull
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.
topAppendOctets
encodedBytes: PWideChar;
encoding: PWideChar): wordbool; stdcall;
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.
topAppendOid
oid: PWideChar): wordbool; stdcall;
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.
topAppendSequence
Appends an ASN.1 sequence item to the caller's sub-items.
Returns True for success, False for failure.
AppendSequence2
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.
topAppendSequenceR
Appends an ASN.1 sequence item to the caller's sub-items, and returns the newly appended sequence item.
Returns nil on failure
topAppendSet
Appends an ASN.1 set item to the caller's sub-items.
Returns True for success, False for failure.
AppendSet2
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.
topAppendSetR
Appends an ASN.1 set item to the caller's sub-items, and returns the newly appended set item.
Returns nil on failure
topAppendString
strType: PWideChar;
value: PWideChar): wordbool; stdcall;
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.
topAppendTime
timeFormat: PWideChar;
dateTimeStr: PWideChar): wordbool; stdcall;
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.
topAsnToXml
outStr: HCkString): wordbool; stdcall;
function CkAsn__asnToXml(objHandle: HCkAsn): PWideChar; stdcall;
Converts ASN.1 to XML and returns the XML string.
Returns True for success, False for failure.
See the notes about PWideChar memory ownership and validity.
DeleteSubItem
index: Integer): wordbool; stdcall;
Discards the Nth sub-item. (The 1st sub-item is at index 0.)
Returns True for success, False for failure.
topGetBinaryDer
GetEncodedContent
encoding: PWideChar;
outStr: HCkString): wordbool; stdcall;
function CkAsn__getEncodedContent(objHandle: HCkAsn;
encoding: PWideChar): PWideChar; stdcall;
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 True for success, False for failure.
See the notes about PWideChar memory ownership and validity.
topGetEncodedDer
encoding: PWideChar;
outStr: HCkString): wordbool; stdcall;
function CkAsn__getEncodedDer(objHandle: HCkAsn;
encoding: PWideChar): PWideChar; stdcall;
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 True for success, False for failure.
See the notes about PWideChar memory ownership and validity.
GetLastSubItem
Returns the last ASN.1 sub-item. This method can be called immediately after any Append* method to access the appended item.
Returns nil on failure
topGetSubItem
index: Integer): HCkAsn; stdcall;
Returns the Nth ASN.1 sub-item. The 1st sub-item is at index 0.
Returns nil on failure
LoadAsnXml
xmlStr: PWideChar): wordbool; stdcall;
Loads ASN.1 from the XML representation (such as that created by the AsnToXml method).
Returns True for success, False for failure.
LoadBd
Loads ASN.1 from the binary DER contained in bd.
Returns True for success, False for failure.
LoadBinary
LoadBinaryFile
path: PWideChar): wordbool; stdcall;
Loads ASN.1 from a binary DER file.
Returns True for success, False for failure.
LoadEncoded
asnContent: PWideChar;
encoding: PWideChar): wordbool; stdcall;
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.
SetEncodedContent
encodedBytes: PWideChar;
encoding: PWideChar): wordbool; stdcall;
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.
topWriteBd
WriteBinaryDer
path: PWideChar): wordbool; stdcall;
Writes the ASN.1 in binary DER form to a file.
Returns True for success, False for failure.