Asn Swift Reference Documentation

CkoAsn

Current Version: 10.1.0

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

Object Creation

let obj = CkoAsn()!

Properties

BoolValue
boolValue: Bool
Introduced in version 9.5.0.49

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

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Constructed
constructed: Bool (read-only)
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).

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ContentStr
contentStr: String!
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).

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DebugLogFilePath
debugLogFilePath: String!

If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.

Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.

Possible causes of hangs include:

  • A timeout property set to 0, indicating an infinite timeout.
  • A hang occurring within an event callback in the application code.
  • An internal bug in the Chilkat code causing the hang.

More Information and Examples
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IntValue
intValue: Int
Introduced in version 9.5.0.49

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

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LastErrorHtml
lastErrorHtml: String! (read-only)

Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorText
lastErrorText: String! (read-only)

Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorXml
lastErrorXml: String! (read-only)

Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastMethodSuccess
lastMethodSuccess: Bool

Indicates the success or failure of the most recent method call: true means success, false means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages.

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NumSubItems
numSubItems: Int (read-only)
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.

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Tag
tag: String! (read-only)
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

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TagValue
tagValue: Int (read-only)
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)

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VerboseLogging
verboseLogging: Bool

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.

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Version
version: String! (read-only)

Version of the component/library, such as "10.1.0"

More Information and Examples
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Methods

AppendBigInt
appendBigInt(encodedBytes: String, encoding: String) -> Bool
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.

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AppendBits
appendBits(encodedBytes: String, encoding: String) -> Bool
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.

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AppendBool
append(value: Bool) -> Bool
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.

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AppendContextConstructed
appendContextConstructed(tag: Int) -> Bool
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.

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AppendContextPrimitive
appendContextPrimitive(tag: Int, encodedBytes: String, encoding: String) -> Bool
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.

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AppendInt
appendInt(value: Int) -> Bool
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.

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AppendNull
appendNull() -> Bool
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.

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AppendOctets
appendOctets(encodedBytes: String, encoding: String) -> Bool
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.

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AppendOid
appendOid(oid: String) -> Bool
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.

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AppendSequence
appendSequence() -> Bool
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.

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AppendSequence2
appendSequence2() -> Bool
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.

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AppendSequenceR
appendSequenceR() -> CkoAsn
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 nil on failure

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AppendSet
appendSet() -> Bool
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.

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AppendSet2
appendSet2() -> Bool
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.

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AppendSetR
appendSetR() -> CkoAsn
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 nil on failure

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AppendString
append(strType: String, value: String) -> Bool
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.

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AppendTime
appendTime(timeFormat: String, dateTimeStr: String) -> Bool
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.

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AsnToXml
asnToXml() -> String
Introduced in version 9.5.0.49

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

Returns nil on failure

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DeleteSubItem
deleteSubItem(index: Int) -> Bool
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.

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GetBinaryDer
getBinaryDer() -> NSData
Introduced in version 9.5.0.49

Returns the ASN.1 in binary DER form.

Returns nil on failure

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GetEncodedContent
getEncodedContent(encoding: String) -> 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 nil on failure

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GetEncodedDer
getEncodedDer(encoding: String) -> 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 nil on failure

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GetLastSubItem
getLastSubItem() -> CkoAsn
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 nil on failure

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GetSubItem
getSubItem(index: Int) -> CkoAsn
Introduced in version 9.5.0.49

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

Returns nil on failure

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LoadAsnXml
loadXml(xmlStr: String) -> Bool
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.

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LoadBd
loadBd(bd: CkoBinData) -> Bool
Introduced in version 9.5.0.77

Loads ASN.1 from the binary DER contained in bd.

Returns true for success, false for failure.

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LoadBinary
loadBinary(derBytes: NSData) -> Bool
Introduced in version 9.5.0.49

Loads ASN.1 from binary DER.

Returns true for success, false for failure.

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LoadBinaryFile
loadBinaryFile(path: String) -> Bool
Introduced in version 9.5.0.49

Loads ASN.1 from a binary DER file.

Returns true for success, false for failure.

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LoadEncoded
loadEncoded(asnContent: String, encoding: String) -> Bool
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.

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SetEncodedContent
setEncodedContent(encodedBytes: String, encoding: String) -> Bool
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.

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WriteBd
writeBd(bd: CkoBinData) -> Bool
Introduced in version 9.5.0.77

Appends the ASN.1 in binary DER format to bd.

Returns true for success, false for failure.

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WriteBinaryDer
writeBinaryDer(path: String) -> Bool
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.

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