asn1lib

https://pub.dev/documentation/asn1lib/
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An ASN.1 parser library for Dart that encodes and decodes ASN.1 structures using BER (Basic Encoding...
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### Decoding ASN.1 Data

Source: https://pub.dev/documentation/asn1lib/latest

Shows how to parse BER-encoded bytes into ASN.1 objects. Includes an example of relaxed parsing for unsupported structures.

```dart
import 'package:asn1lib/asn1lib.dart';

// e.g. bytes from the Encoding Example
var p = ASN1Parser(bytes);
var s2 = p.nextObject();
// s2 is a sequence...


// relaxed parsing, returning a generic ASN1Object from (yet) unsupported structures, instead of throwing
var p2 = ASN1Parser(bytes, relaxedParsing: true);
var s3 = p2.nextObject();
// s3 is a sequence...

```

--------------------------------

### ASN1Object.fromBytes Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Object/ASN1Object.fromBytes.html

This snippet shows the implementation of the ASN1Object.fromBytes constructor. It parses the tag, calculates extended tags if present, decodes the length, and determines the starting position of the value within the provided bytes.

```dart
ASN1Object.fromBytes(Uint8List bytes) : tag = bytes[0] {
  _encodedBytes = bytes;
  // _initFromBytes();

  var offset = 1; // offset where the length bytes start
  // This is an extended tag if all the lower 5 bits are 1s
  if ((tag & 0x1f) == 0x1f) {
    var (tag, o) = _calculateExtendedTag(bytes);
    _extendedTag = tag;
    offset = o;
  }

  var (l, v) = ASN1Object.decodeLength(_encodedBytes!, offset: offset);
  _valueByteLength = l;
  _valueStartPosition = v;
}
```

--------------------------------

### Get UTF-8 String Value

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1OctetString/utf8StringValue.html

Retrieves the string value from the octet bytes by decoding them as UTF-8. This is the standard way to get a human-readable string from an OctetString when UTF-8 encoding is expected.

```dart
String get utf8StringValue => utf8.decode(octets);
```

--------------------------------

### ASN1UTF8String Constructors

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1UTF8String-class.html

Provides information on how to create instances of the ASN1UTF8String class.

```APIDOC
## Constructors

### ASN1UTF8String(String utf8StringValue, {int tag = UTF8_STRING_TYPE})

* **Description**: Create an ASN1UTF8String initialized with String value.
* **Parameters**:
  * `utf8StringValue` (String) - The string value for the UTF8 string.
  * `tag` (int, optional) - The ASN.1 tag for the UTF8 string. Defaults to `UTF8_STRING_TYPE`.

### ASN1UTF8String.fromBytes(Uint8List bytes)

* **Description**: Create an ASN1UTF8String from an encoded list of bytes.
* **Parameters**:
  * `bytes` (Uint8List) - The list of bytes representing the encoded UTF8 string.
```

--------------------------------

### ASN1IA5String Constructors

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IA5String-class.html

Provides information on how to create instances of the ASN1IA5String class.

```APIDOC
## ASN1IA5String Constructors

### ASN1IA5String(String stringValue, {int tag = IA5_STRING_TYPE})

*   **Description**: Create an ASN1IA5String initialized with String value. Optionally override the tag.
*   **Parameters**:
    *   `stringValue` (String) - The string value for the IA5 String.
    *   `tag` (int, optional) - The ASN.1 tag for the IA5 String. Defaults to `IA5_STRING_TYPE`.

### ASN1IA5String.fromBytes(Uint8List bytes)

*   **Description**: Create an ASN1IA5String from an encoded list of bytes.
*   **Parameters**:
    *   `bytes` (Uint8List) - The encoded byte list representing the IA5 String.
```

--------------------------------

### Get ASN1Object Extended Tag

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Object/extendedTag.html

Retrieves the extended tag value from an ASN.1 object. This getter is part of the ASN1Object implementation.

```dart
int? get extendedTag => _extendedTag;
```

--------------------------------

### ASN1Application Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Application/ASN1Application.html

Initializes a new instance of the ASN1Application class. The constructor accepts an optional integer tag, which defaults to APPLICATION_CLASS.

```APIDOC
## ASN1Application Constructor

### Description
Initializes a new instance of the ASN1Application class. The constructor accepts an optional integer tag, which defaults to APPLICATION_CLASS.

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Method Signature
ASN1Application({int tag = APPLICATION_CLASS})

### Implementation
```dart
ASN1Application({super.tag = APPLICATION_CLASS});
```
```

--------------------------------

### ASN1Application.fromBytes Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Application/ASN1Application.fromBytes.html

Initializes an ASN1Application object from a Uint8List. It validates that the provided tag corresponds to an ASN.1 Application class.

```APIDOC
## ASN1Application.fromBytes constructor

### Description
Constructs an ASN1Application object from a Uint8List. It validates that the provided tag corresponds to an ASN.1 Application class.

### Parameters
#### Path Parameters
- **bytes** (Uint8List) - Required - The byte data representing the ASN.1 Application.

### Implementation Notes
The constructor checks if the tag is an ASN.1 Application type. If not, it throws an ASN1Exception.
```

--------------------------------

### Get Integer Value of ASN1Integer

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Integer/intValue.html

Access the intValue property to retrieve the integer representation of an ASN.1 Integer. This requires the value to be representable as a standard Dart int.

```dart
int get intValue => valueAsBigInteger.toInt();
```

--------------------------------

### ASN1IA5String.new constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IA5String/ASN1IA5String.html

Creates an ASN1IA5String initialized with a String value. The tag can be optionally overridden.

```APIDOC
## ASN1IA5String(String stringValue, {int tag = IA5_STRING_TYPE})

### Description
Creates an ASN1IA5String initialized with a String value. Optionally override the tag.

### Parameters
#### Path Parameters
- **stringValue** (String) - Required - The string value to initialize the ASN1IA5String with.
- **tag** (int) - Optional - The tag to assign to the ASN1IA5String. Defaults to IA5_STRING_TYPE.

### Implementation
```dart
ASN1IA5String(this.stringValue, {super.tag = IA5_STRING_TYPE});
```
```

--------------------------------

### Get ASN.1 Object Value Bytes

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Object/valueBytes.html

Returns a view into the encoded byte buffer representing the value of the ASN.1 object. This is an efficient way to access the raw bytes.

```dart
Uint8List valueBytes() {
  return Uint8List.view(encodedBytes.buffer, _valueStartPosition + encodedBytes.offsetInBytes, _valueByteLength);
}
```

--------------------------------

### ASN1BMPString Constructors

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1BMPString-class.html

Provides documentation for the two constructors available for the ASN1BMPString class: one for initializing with a string value and another for creating from encoded bytes.

```APIDOC
## ASN1BMPString Constructors

### ASN1BMPString(String stringValue, {int tag = BMP_STRING_TYPE})

*   **Description**: Creates an ASN1BMPString initialized with a String value. Optionally override the tag.
*   **Parameters**:
    *   `stringValue` (String) - Required - The string value to initialize the BMPString with.
    *   `tag` (int) - Optional - The ASN.1 tag type, defaults to `BMP_STRING_TYPE`.

### ASN1BMPString.fromBytes(Uint8List bytes)

*   **Description**: Creates an ASN1BMPString from an encoded list of bytes.
*   **Parameters**:
    *   `bytes` (Uint8List) - Required - The encoded byte list to decode into an ASN1BMPString.
```

--------------------------------

### Get ASN1OctetString as String

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1OctetString/stringValue.html

Retrieves the string value of an ASN.1 Octet String using Dart's default UTF-16 decoding. Use utf8StringValue or utf16StringValue for explicit encoding.

```dart
String get stringValue => String.fromCharCodes(octets);
```

--------------------------------

### ASN1Sequence.new constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Sequence/ASN1Sequence.html

Creates a new empty ASN1 Sequence. You can optionally override the default tag.

```APIDOC
## ASN1Sequence.new constructor

### Description
Creates a new empty ASN1 Sequence. Optionally override the default tag.

### Method
Constructor

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
- **tag** (int) - Optional - The tag for the sequence. Defaults to `CONSTRUCTED_SEQUENCE_TYPE`.

### Request Example
```dart
ASN1Sequence({
  int tag = CONSTRUCTED_SEQUENCE_TYPE,
})
```

### Response
#### Success Response (200)
- **ASN1Sequence** - A new instance of ASN1Sequence.

#### Response Example
```dart
ASN1Sequence mySequence = ASN1Sequence(); // Uses default tag
ASN1Sequence taggedSequence = ASN1Sequence(tag: 10); // Uses custom tag
```
```

--------------------------------

### encodedBytes Property

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Object/encodedBytes.html

Gets the encoded byte representation for this ASN.1 object. It triggers the subclass's `_encode` method if the object has not yet been encoded. An ASN1Exception is thrown if encoding fails.

```APIDOC
## encodedBytes Property

### Description
Gets the encoded byte representation for this ASN.1 object. This can trigger calling the subclass's `_encode` method if the object has not yet been encoded.

### Type
`Uint8List`

### Usage
```dart
ASN1Object obj = ...;
Uint8List encoded = obj.encodedBytes;
```

### Implementation Details
If the `_encodedBytes` is null, the `_encode()` method is called. If `_encodedBytes` remains null after encoding, an `ASN1Exception` is thrown, indicating an encoding failure.
```

--------------------------------

### Get UTF-16 String Value from Octets

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1OctetString/utf16StringValue.html

This snippet shows how to retrieve the UTF-16 string representation from the octet data of an ASN.1 OctetString. It uses Dart's String.fromCharCodes to perform the conversion.

```dart
String get utf16StringValue => String.fromCharCodes(octets);
```

--------------------------------

### ASN1BitString Constructors

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1BitString-class.html

Provides constructors for creating ASN1BitString objects.

```APIDOC
## ASN1BitString(List<int> stringValue, {int unusedbits = 0, int tag = BIT_STRING_TYPE})

### Description
Create an ASN1BitString initialized with String value. Optionally override the tag.

### Parameters
#### Path Parameters
- **stringValue** (List<int>) - Required - The list of integer character codes representing the string value.
- **unusedbits** (int) - Optional - The number of unused bits in the last byte. Defaults to 0.
- **tag** (int) - Optional - The ASN.1 tag for the bit string. Defaults to BIT_STRING_TYPE.
```

```APIDOC
## ASN1BitString.fromBytes(Uint8List bytes)

### Description
Create an ASN1OctetString from an encoded list of bytes.

### Parameters
#### Path Parameters
- **bytes** (Uint8List) - Required - The encoded byte list.
```

--------------------------------

### Initialize ASN1Set Elements

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Set/elements.html

Demonstrates how to initialize an empty set for ASN1Object elements within an ASN1Set.

```javascript
Set<ASN1Object> elements = {};
```

--------------------------------

### Get ASN.1 Object Encoded Bytes

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Object/encodedBytes.html

Retrieves the encoded byte representation of an ASN.1 object. It calls the internal `_encode` method if the bytes are not yet computed. Throws an ASN1Exception if encoding fails.

```dart
Uint8List get encodedBytes {
  if (_encodedBytes == null) {
    _encode();
  }
  if (_encodedBytes == null) {
    throw ASN1Exception('ASN1 Encoding failed. This should never happen');
  }
  return _encodedBytes!;
}
```

--------------------------------

### ASN1Application Constructors

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Application-class.html

Constructors for creating ASN1Application objects.

```APIDOC
## Constructors

### ASN1Application()

Creates a new ASN1Application object with a default application class tag.

### ASN1Application.fromBytes(Uint8List bytes)

Creates a new ASN1Application object from a list of bytes. Note: The tag needs to be overridden after creation.
```

--------------------------------

### Get Total Encoded Byte Length

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Object/totalEncodedByteLength.html

This property calculates the total byte length of the ASN.1 object, encompassing the tag, length, and value bytes. It is useful for stream parsing to identify the end of an object.

```dart
int get totalEncodedByteLength => _valueStartPosition + _valueByteLength;
```

--------------------------------

### ASN1Object.new constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Object/ASN1Object.html

Creates a new ASN1Object. The tag can be optionally set during initialization.

```APIDOC
## ASN1Object.new constructor

### Description
Creates a new ASN1Object. Optionally set the tag.

### Method
Constructor

### Parameters
#### Path Parameters
- **tag** (int) - Optional - The tag for the ASN1Object. Defaults to 0.

### Request Example
```dart
ASN1Object({
  int tag = 0,
})
```

### Response
#### Success Response (200)
- **ASN1Object** - An instance of ASN1Object.

#### Response Example
```dart
ASN1Object(tag: 10)
```
```

--------------------------------

### Get String Value of Octet String

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IpAddress/stringValue.html

Retrieves the string representation of the octet string using Dart's default UTF-16 decoding. This method is deprecated; use utf8StringValue or utf16StringValue for explicit encoding.

```dart
@override
String get stringValue => octets.join('.');
```

--------------------------------

### Initialize ASN.1 Sequence Elements

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Sequence/elements.html

Demonstrates how to initialize an empty list for the elements property of an ASN.1 Sequence.

```dart
List<ASN1Object> elements = <ASN1Object>[];
```

--------------------------------

### ASN1Object toString Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Object/toString.html

This snippet shows the implementation of the toString method for ASN1Object. It formats the output to include the tag in hexadecimal, the length of the value in bytes, the starting position of the value, and the hexadecimal representation of the bytes.

```dart
@override
String toString() =>
    'ASN1Object(tag=${tag.toRadixString(16)} valueByteLength=$_valueByteLength) startpos=$_valueStartPosition bytes=${toHexString()}';
```

--------------------------------

### ASN1IpAddress.fromBytes Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IpAddress/ASN1IpAddress.fromBytes.html

Constructs an ASN1IpAddress from a Uint8List of bytes. It asserts the validity of the byte length upon creation.

```APIDOC
## ASN1IpAddress.fromBytes constructor

### Description
Creates an ASN1IpAddress from an encoded list of bytes.

### Parameters
#### Path Parameters
- **bytes** (Uint8List) - Required - The list of bytes representing the IP address.
```

--------------------------------

### ASN1Sequence Constructors

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Sequence-class.html

Provides documentation for the constructors of the ASN1Sequence class, used for creating new sequence objects.

```APIDOC
## Constructors

### ASN1Sequence()

Create a new empty ASN1 Sequence. Optionally override the default tag.

### ASN1Sequence.fromBytes(Uint8List bytes)

Create a sequence from the byte array `super.bytes`.
```

--------------------------------

### Decode ASN.1 Length

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Object/decodeLength.html

Decodes the ASN.1 length field from a Uint8List. It returns a record containing the decoded length and the starting position of the value within the byte array. The offset parameter indicates where the length bytes begin.

```Dart
static (int length, int valueStart) decodeLength(Uint8List encodedBytes, {int offset = 1}) {
  var valueStartPosition = offset + 1; //default
  var length = encodedBytes[offset] & 0x7F;
  if (length != encodedBytes[offset]) {
    var numLengthBytes = length;

    length = 0;
    for (var i = 0; i < numLengthBytes; i++) {
      length <<= 8;
      length |= encodedBytes[valueStartPosition++] & 0xFF;
    }
  }
  return (length, valueStartPosition);
}
```

--------------------------------

### decodeLength static method

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Object/decodeLength.html

Decodes the ASN.1 length field from the provided encoded bytes. It returns a record containing the decoded length and the starting position of the value within the byte array. The `offset` parameter specifies where the length encoding begins.

```APIDOC
## decodeLength(Uint8List encodedBytes, {int offset = 1})

### Description
Decodes the ASN.1 length field from the encoded bytes. This method has no side effects on an object. It returns a record with (length, valueStartPosition), where `length` is the length in bytes of the object, and `valueStartPosition` is the offset where the values start within the byte array (after the tag and the length bytes).

Usually, the first byte is the tag followed by the length encoding. `offset` is where the length bytes start in the byte array. For most objects, this will be right after the tag at position 1.

### Parameters
#### Path Parameters
- **encodedBytes** (Uint8List) - Required - The byte array containing the ASN.1 encoded data.
- **offset** (int) - Optional - The starting offset within `encodedBytes` where the length field begins. Defaults to 1.

### Returns
- **(int length, int valueStart)** - A record where `length` is the decoded length and `valueStart` is the offset to the start of the value data.
```

--------------------------------

### ASN1BitString Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1BitString/ASN1BitString.html

Creates an ASN1BitString initialized with a list of integers representing the string value. It also allows for optional specification of unused bits and the ASN.1 tag.

```APIDOC
## ASN1BitString(List<int> stringValue, {int unusedbits = 0, int tag = BIT_STRING_TYPE})

### Description
Creates an ASN1BitString initialized with a list of integers representing the string value. Optionally override the tag.

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Method Signature
```dart
ASN1BitString(List<int> stringValue, {int unusedbits = 0, int tag = BIT_STRING_TYPE})
```

### Implementation
```dart
ASN1BitString(this.stringValue,
    {this.unusedbits = 0, super.tag = BIT_STRING_TYPE});
```

### Parameters
- **stringValue** (List<int>) - Required - The list of integers representing the bit string value.
- **unusedbits** (int) - Optional - The number of unused bits in the last byte. Defaults to 0.
- **tag** (int) - Optional - The ASN.1 tag for the bit string. Defaults to BIT_STRING_TYPE.
```

--------------------------------

### ASN1Application Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Application/ASN1Application.html

Initializes an ASN1Application object with the default tag for the application class.

```dart
ASN1Application({super.tag = APPLICATION_CLASS});
```

--------------------------------

### ASN1IpAddress fromComponents Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IpAddress/fromComponents.html

This is the static method implementation for creating an ASN1IpAddress from a list of integer components.

```dart
static ASN1IpAddress fromComponents(List<int> components,
        {int tag = IP_ADDRESS}) =>
    ASN1IpAddress(components, tag: tag);
```

--------------------------------

### ASN1UTF8String Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1UTF8String/ASN1UTF8String.html

Creates an ASN1UTF8String initialized with a String value. The tag can optionally be overridden.

```APIDOC
## ASN1UTF8String.new constructor

### Description
Creates an ASN1UTF8String initialized with a String value. Optionally override the tag.

### Method
```dart
ASN1UTF8String(String utf8StringValue, {int tag = UTF8_STRING_TYPE})
```

### Parameters
#### Path Parameters
- **utf8StringValue** (String) - Required - The string value for the UTF8 string.
- **tag** (int) - Optional - The ASN.1 tag for the string. Defaults to `UTF8_STRING_TYPE`.
```

--------------------------------

### Static Methods

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1ObjectIdentifier-class.html

Provides static methods for creating ASN1ObjectIdentifier instances from various formats.

```APIDOC
## Static Methods

- **fromComponents(List<int> components, {int tag = OBJECT_IDENTIFIER}) → ASN1ObjectIdentifier**
- **fromComponentString(String path, {int tag = OBJECT_IDENTIFIER}) → ASN1ObjectIdentifier**
- **fromName(String name, {int tag = OBJECT_IDENTIFIER}) → ASN1ObjectIdentifier**
- **registerFrequentNames() → void**
- **registerManyNames(Map<String, String> pairs) → void**
- **registerObjectIdentiferName(String name, ASN1ObjectIdentifier oid) → void**
```

--------------------------------

### ASN1UTF8String.fromBytes Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1UTF8String/ASN1UTF8String.fromBytes.html

Creates an ASN1UTF8String from a Uint8List. The constructor decodes the provided bytes into a UTF-8 string.

```APIDOC
## ASN1UTF8String.fromBytes constructor

### Description
Creates an ASN1UTF8String from a Uint8List. The constructor decodes the provided bytes into a UTF-8 string.

### Method Signature
ASN1UTF8String.fromBytes(Uint8List bytes)

### Parameters
#### Path Parameters
- **bytes** (Uint8List) - Required - The list of bytes to decode into a UTF-8 string.
```

--------------------------------

### ASN1IpAddress Static Methods

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IpAddress-class.html

Static methods for creating ASN1IpAddress objects from different formats.

```APIDOC
## Static Methods

### fromComponents(List<int> components, {int tag = IP_ADDRESS})

*   **Description**: Create an ASN1IpAddress from a list of int IP Address octets (e.g., `192, 168, 1, 1`).
*   **Parameters**:
    *   `components` (List<int>) - A list of integers representing the IP address octets.
    *   `tag` (int, optional) - The ASN.1 tag for the IP address. Defaults to `IP_ADDRESS`.

### fromComponentString(String path, {int tag = IP_ADDRESS})

*   **Description**: Create an ASN1IpAddress from an IP Address String (such as '192.168.1.1').
*   **Parameters**:
    *   `path` (String) - The IP address string.
    *   `tag` (int, optional) - The ASN.1 tag for the IP address. Defaults to `IP_ADDRESS`.
```

--------------------------------

### Encoding ASN.1 Objects to BER

Source: https://pub.dev/packages/asn1lib

Demonstrates how to create and encode ASN.1 objects like sequences, integers, octet strings, and booleans into BER byte format.

```dart
import 'package:asn1lib/asn1lib.dart';

var s = ASN1Sequence();
s.add(ASN1Integer(23));
s.add(ASN1OctetString('This is a test'));
s.add(ASN1Boolean(true));

// GET the BER Stream
var bytes = s
.
encodedBytes;
```

--------------------------------

### ASN1ContextSpecific.fromBytes Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1ContextSpecific/ASN1ContextSpecific.fromBytes.html

This snippet shows the implementation of the ASN1ContextSpecific.fromBytes constructor. It initializes the object with bytes and validates that the tag is indeed context-specific.

```dart
ASN1ContextSpecific.fromBytes(super.bytes) : super.fromBytes() {
  // check that this really is an Private type
  if (!isContextSpecific(tag)) {
    throw ASN1Exception('tag $tag is not an ASN1 Context specific class');
  }
}
```

--------------------------------

### ASN1BMPString Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1BMPString/ASN1BMPString.html

Creates an ASN1BMPString initialized with a String value. The tag can optionally be overridden.

```APIDOC
## ASN1BMPString Constructor

### Description
Initializes a new instance of the ASN1BMPString class with a given string value. An optional tag can be provided to override the default BMP_STRING_TYPE.

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
- **stringValue** (String) - Required - The string value to initialize the ASN1BMPString with.
- **tag** (int) - Optional - The tag for the ASN1BMPString. Defaults to BMP_STRING_TYPE.

### Request Example
```dart
ASN1BMPString("Hello World", tag: 123)
```

### Response
#### Success Response (200)
An ASN1BMPString object is created.

#### Response Example
```dart
ASN1BMPString("Hello World")
```

## Implementation
```dart
ASN1BMPString(this.stringValue, {super.tag = BMP_STRING_TYPE});
```
```

--------------------------------

### ASN1Application.fromBytes Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Application/ASN1Application.fromBytes.html

This snippet shows the implementation of the ASN1Application.fromBytes constructor. It initializes the superclass with the provided bytes and then checks if the tag is of the ASN1 Application class. An ASN1Exception is thrown if the tag is invalid.

```dart
ASN1Application.fromBytes(super.bytes) : super.fromBytes() {
  // check that this really is an application type
  if (!isApplication(tag)) {
    throw ASN1Exception('tag $tag is not an ASN1 Application class');
  }
}
```

--------------------------------

### ASN1BitString Methods

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1BitString-class.html

Provides methods for interacting with ASN1BitString objects.

```APIDOC
## contentBytes() → Uint8List

### Description
Returns the real content of a tag. This might be equal to valueBytes for some tags.

### Returns
Uint8List - The content bytes.
```

```APIDOC
## noSuchMethod(Invocation invocation) → dynamic

### Description
Invoked when a nonexistent method or property is accessed.

### Parameters
#### Path Parameters
- **invocation** (Invocation) - Required - The invocation details.

### Returns
dynamic
```

```APIDOC
## toHexString() → String

### Description
Converts the bit string to its hexadecimal representation.

### Returns
String - The hexadecimal string.
```

```APIDOC
## toString() → String

### Description
A string representation of this object.

### Returns
String - The string representation.
```

```APIDOC
## valueBytes() → Uint8List

### Description
Return just the value bytes.

### Returns
Uint8List - The value bytes.
```

--------------------------------

### ASN1Object Constructors

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Object-class.html

Provides different ways to create an ASN1Object instance.

```APIDOC
## ASN1Object Constructors

### ASN1Object({int tag = 0})
* Description: Create an ASN1Object. Optionally set the tag.

### ASN1Object.fromBytes(Uint8List bytes)
* Description: Create an ASN1Object from the given `bytes`.

### ASN1Object.preEncoded(int tag, Uint8List valBytes)
* Description: Create an object that encapsulates a set of value bytes that are already encoded.
```

--------------------------------

### ASN1IpAddress Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IpAddress/ASN1IpAddress.html

Creates an ASN1IpAddress object initialized with a list of octets. An optional tag can be provided to override the default IP_ADDRESS tag. The octets must be valid integers between 0 and 255.

```APIDOC
## ASN1IpAddress(List<int> octets, {int tag = IP_ADDRESS})

### Description
Creates an ASN1IpAddress object initialized with a list of octets. An optional tag can be provided to override the default IP_ADDRESS tag. The octets must be valid integers between 0 and 255.

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Method
Constructor

### Endpoint
None

### Request Example
```dart
// Example of creating an ASN1IpAddress
var ipAddress = ASN1IpAddress([192, 168, 1, 1]);
```

### Response
#### Success Response
An ASN1IpAddress object.

#### Response Example
```dart
// Example of a successful response (object creation)
ASN1IpAddress ipAddress = ASN1IpAddress([192, 168, 1, 1]);
```

### Implementation Details
```dart
ASN1IpAddress(List<int> octets, {int tag = IP_ADDRESS})
    : super(octets, tag: tag) {
  _assertValidLength(this.octets);
  for (var o in octets) {
    if (0 > o || o > 255) {
      throw ArgumentError('Octet out of range!.');
    }
  }
}
```
```

--------------------------------

### ASN1IA5String.fromBytes Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IA5String/ASN1IA5String.fromBytes.html

Creates an ASN1IA5String from an encoded list of bytes. The constructor decodes the byte list into an ASCII string.

```APIDOC
## ASN1IA5String.fromBytes constructor

### Description
Creates an ASN1IA5String from an encoded list of bytes. The constructor decodes the byte list into an ASCII string.

### Parameters
#### Path Parameters
- **bytes** (Uint8List) - Required - The encoded list of bytes to create the ASN1IA5String from.

### Implementation
```dart
ASN1IA5String.fromBytes(super.bytes) : super.fromBytes() {
  var octets = valueBytes();
  stringValue = ascii.decode(octets);
}
```
```

--------------------------------

### Methods

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1ObjectIdentifier-class.html

Provides methods for encoding, converting to string, and retrieving content bytes.

```APIDOC
## Methods

- **contentBytes() → Uint8List**: Returns the real content of a tag. This might be equal to valueBytes for some tags.
- **noSuchMethod(Invocation invocation) → dynamic**: Invoked when a nonexistent method or property is accessed.
- **toHexString() → String**: No description available.
- **toString() → String**: A string representation of this object.
- **valueBytes() → Uint8List**: Return just the value bytes.
```

--------------------------------

### ASN1IpAddress Constructors

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IpAddress-class.html

Constructors for creating ASN1IpAddress objects. You can initialize with a list of octets or from a byte array.

```APIDOC
## Constructors

### ASN1IpAddress(List<int> octets, {int tag = IP_ADDRESS})

*   **Description**: Create an ASN1IpAddress initialized with a String or a List<int>. Optionally override the tag.
*   **Parameters**:
    *   `octets` (List<int>) - The list of integer octets representing the IP address.
    *   `tag` (int, optional) - The ASN.1 tag for the IP address. Defaults to `IP_ADDRESS`.

### ASN1IpAddress.fromBytes(Uint8List bytes)

*   **Description**: Create an ASN1IpAddress from an encoded list of bytes.
*   **Parameters**:
    *   `bytes` (Uint8List) - The byte array containing the encoded IP address.
```

--------------------------------

### ASN1ContextSpecific.fromBytes Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1ContextSpecific/ASN1ContextSpecific.fromBytes.html

The ASN1ContextSpecific.fromBytes constructor takes a Uint8List as input and initializes the object. It includes a check to ensure the tag is indeed a Context Specific type, throwing an ASN1Exception if it is not.

```APIDOC
## ASN1ContextSpecific.fromBytes constructor

### Description
Constructs an ASN1ContextSpecific object from a list of bytes.

### Parameters
#### Path Parameters
- **bytes** (Uint8List) - Required - The list of bytes representing the ASN.1 data.

### Implementation Notes
The constructor verifies that the tag of the provided bytes corresponds to a Context Specific type. If the tag is not a Context Specific type, an ASN1Exception is thrown.

```dart
ASN1ContextSpecific.fromBytes(Uint8List bytes) : super(bytes) {
  // check that this really is an Private type
  if (!isContextSpecific(tag)) {
    throw ASN1Exception('tag $tag is not an ASN1 Context specific class');
  }
}
```
```

--------------------------------

### ASN1IpAddress fromComponentString Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IpAddress/fromComponentString.html

This static method creates an ASN1IpAddress from a dot-separated IP address string. It splits the string by '.', parses each part as an integer, and then uses the fromComponents method to construct the ASN1IpAddress. The tag parameter can be optionally specified.

```dart
static ASN1IpAddress fromComponentString(String path,
        {int tag = IP_ADDRESS}) =>
    fromComponents(path.split('.').map(int.parse).toList(), tag: tag);
```

--------------------------------

### ASN1IpAddress.fromBytes Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IpAddress/ASN1IpAddress.fromBytes.html

This snippet shows the implementation of the ASN1IpAddress.fromBytes constructor. It calls the superclass constructor and then asserts the validity of the octet length.

```dart
ASN1IpAddress.fromBytes(super.bytes) : super.fromBytes() {
  _assertValidLength(octets);
}
```

--------------------------------

### ASN1ObjectIdentifier.fromComponentString Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1ObjectIdentifier/fromComponentString.html

This snippet shows the implementation of the `fromComponentString` static method. It takes a string path, splits it by dots, parses each component into an integer, and then uses these components to create an `ASN1ObjectIdentifier` via the `fromComponents` method. An optional tag can be provided.

```dart
static ASN1ObjectIdentifier fromComponentString(String path, {int tag = OBJECT_IDENTIFIER}) =>
    fromComponents(path.split('.').map(int.parse).toList(), tag: tag);
```

--------------------------------

### Encoding ASN.1 Data

Source: https://pub.dev/documentation/asn1lib/latest

Demonstrates how to create and encode an ASN.1 sequence with integer, octet string, and boolean values.

```dart
import 'package:asn1lib/asn1lib.dart';

var s = ASN1Sequence();
s.add(ASN1Integer(23));
s.add(ASN1OctetString('This is a test'));
s.add(ASN1Boolean(true));

// GET the BER Stream
var bytes = s
.
encodedBytes;

```

--------------------------------

### ASN1IA5String.fromBytes Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IA5String/ASN1IA5String.fromBytes.html

This snippet shows the implementation of the ASN1IA5String.fromBytes constructor. It takes a list of bytes, decodes them using ASCII, and assigns the result to stringValue.

```dart
ASN1IA5String.fromBytes(super.bytes) : super.fromBytes() {
  var octets = valueBytes();
  stringValue = ascii.decode(octets);
}
```

--------------------------------

### ASN1NumericString Constructors

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1NumericString-class.html

Provides documentation for the constructors of the ASN1NumericString class, used for creating instances from string values or encoded bytes.

```APIDOC
## ASN1NumericString Constructors

### ASN1NumericString(String stringValue, {int tag = NUMERIC_STRING_TYPE})

**Description**: Creates an ASN1NumericString initialized with a String value.

### ASN1NumericString.fromBytes(Uint8List bytes)

**Description**: Creates an ASN1NumericString from an encoded list of bytes.
```

--------------------------------

### ASN1OctetString.fromBytes Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1OctetString/ASN1OctetString.fromBytes.html

This is the implementation of the ASN1OctetString.fromBytes constructor. It initializes the octets property with the value bytes.

```dart
ASN1OctetString.fromBytes(super.bytes) : super.fromBytes() {
  octets = valueBytes();
}
```

--------------------------------

### ASN1Application Methods

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Application-class.html

Methods available for ASN1Application objects.

```APIDOC
## Methods

- **contentBytes()**: `Uint8List` - Returns the real content of a tag.
- **noSuchMethod(Invocation invocation)**: `dynamic` - Invoked when a nonexistent method or property is accessed.
- **toHexString()**: `String` - Converts the object to a hexadecimal string representation.
- **toString()**: `String` - A string representation of this object.
- **valueBytes()**: `Uint8List` - Return just the value bytes.
```

--------------------------------

### ASN1BitString Static Methods

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1BitString-class.html

Provides static methods for decoding ASN.1 data.

```APIDOC
## decodeOctetString(Uint8List bytes) → String

### Description
Decodes an ASN.1 Octet String from a byte list.

### Parameters
#### Path Parameters
- **bytes** (Uint8List) - Required - The encoded byte list.

### Returns
String - The decoded string.
```

--------------------------------

### ASN1BMPString.fromBytes Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1BMPString/ASN1BMPString.fromBytes.html

Constructs an ASN1BMPString by decoding a Uint8List. The bytes are treated as a sequence of 16-bit unsigned integers (big-endian) which are then decoded into a string.

```APIDOC
## ASN1BMPString.fromBytes constructor

### Description
Creates an ASN1BMPString from an encoded list of bytes. The constructor takes a `Uint8List` as input, interprets each pair of bytes as a 16-bit unsigned integer (big-endian), and then decodes these integers into a UTF-8 string.

### Method Signature
```dart
ASN1BMPString.fromBytes(Uint8List bytes)
```

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Parameters
* **bytes** (Uint8List) - Required - The encoded list of bytes representing the BMPString.
```

--------------------------------

### ASN1OctetString.fromBytes Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1OctetString/ASN1OctetString.fromBytes.html

Creates an ASN1OctetString from an encoded list of bytes.

```APIDOC
## ASN1OctetString.fromBytes constructor

### Description
Creates an ASN1OctetString from an encoded list of bytes.

### Parameters
#### Path Parameters
- **bytes** (Uint8List) - Required - The encoded list of bytes.

### Implementation
```dart
ASN1OctetString.fromBytes(super.bytes) : super.fromBytes() {
  octets = valueBytes();
}
```
```

--------------------------------

### ASN1IpAddress Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IpAddress/ASN1IpAddress.html

Initializes an ASN1IpAddress with a list of octets and an optional tag. Validates octet values to be between 0 and 255 and checks for valid length.

```dart
ASN1IpAddress(List<int> octets, {int tag = IP_ADDRESS})
    : super(octets, tag: tag) {
  _assertValidLength(this.octets);
  for (var o in octets) {
    if (0 > o || o > 255) {
      throw ArgumentError('Octet out of range!.');
    }
  }
}
```

--------------------------------

### ASN1Integer.fromBytes Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Integer/ASN1Integer.fromBytes.html

Creates an ASN1Integer instance by decoding a Uint8List. The constructor takes a byte list representing the ASN.1 encoded integer and initializes the object, decoding the value into a BigInteger.

```APIDOC
## ASN1Integer.fromBytes constructor

### Description
Constructs an ASN1Integer object from a Uint8List of bytes. This method decodes the provided byte array, which is expected to be in ASN.1 integer format, into a BigInteger value.

### Parameters
#### Path Parameters
- **bytes** (Uint8List) - Required - The byte list containing the ASN.1 encoded integer value.

### Implementation Details
The constructor initializes the superclass with the provided bytes and then proceeds to decode the `valueBytes` into a `BigInteger` using the `decodeBigInt` method.
```

--------------------------------

### Constructors

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1ObjectIdentifier-class.html

Provides constructors for creating ASN1ObjectIdentifier instances.

```APIDOC
## Constructors

### ASN1ObjectIdentifier

```dart
ASN1ObjectIdentifier(List<int> oi, {String? identifier, int tag = OBJECT_IDENTIFIER})
```

### ASN1ObjectIdentifier.fromBytes

```dart
ASN1ObjectIdentifier.fromBytes(Uint8List bytes)
```

Instantiate a ASN1ObjectIdentifier from the given `bytes`.
```

--------------------------------

### ASN1Set Methods

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Set-class.html

Includes methods for adding elements to the set, retrieving content and value bytes, and converting the object to a string or hex string.

```APIDOC
## Methods

### add(ASN1Object o) → void

Adds the given ASN1Object `o` to the set.

### contentBytes() → Uint8List

Returns the actual content bytes of the ASN.1 tag. For some tags, this may be the same as `valueBytes()`.

### noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed. Inherited from Object.

### toHexString() → String

Converts the ASN.1 object to its hexadecimal string representation. Inherited from ASN1Object.

### toString() → String

Returns a string representation of this ASN1Set object. Overrides the default toString method.
```

--------------------------------

### ASN1OctetString Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1OctetString/ASN1OctetString.html

Creates an ASN1OctetString initialized with a String or a List<int>. Optionally overrides the default ASN1 tag. The String is encoded as UTF-8 octets.

```APIDOC
## ASN1OctetString Constructor

### Description
Initializes an ASN1OctetString with provided octets, which can be a String or a List<int>. Allows for an optional custom tag, defaulting to OCTET_STRING_TYPE.

### Parameters
* `octets` (dynamic) - Required - The data to be encoded as octets. Accepts String (encoded as UTF-8) or List<int>.
* `tag` (int) - Optional - The ASN.1 tag for the octet string. Defaults to `OCTET_STRING_TYPE`.

### Implementation Notes
The constructor handles String input by encoding it to UTF-8. It also accepts Uint8List or List<int>. An ArgumentError is thrown if the input type is not supported.
```

--------------------------------

### ASN1Enumerated Methods

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Enumerated-class.html

Includes methods for retrieving the content bytes, handling non-existent method calls, converting to a hexadecimal string, and providing a string representation of the object.

```APIDOC
## Methods

*   **contentBytes() → Uint8List**
    Returns the real content of a tag. This might be equal to valueBytes for some tags.

*   **noSuchMethod(Invocation invocation) → dynamic**
    Invoked when a nonexistent method or property is accessed.

*   **toHexString() → String**
    

*   **toString() → String**
    A string representation of this object.

*   **valueBytes() → Uint8List**
    Return just the value bytes.
```

--------------------------------

### ASN1Integer.fromBytes Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Integer/ASN1Integer.fromBytes.html

This snippet shows the implementation of the ASN1Integer.fromBytes constructor. It initializes the superclass with the provided bytes and then decodes the value bytes into a BigInteger.

```dart
ASN1Integer.fromBytes(super.bytes) : super.fromBytes() {
  valueAsBigInteger = decodeBigInt(valueBytes());
}
```

--------------------------------

### ASN1IA5String Methods

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1IA5String-class.html

Lists the methods available for ASN1IA5String objects.

```APIDOC
## ASN1IA5String Methods

### contentBytes() → Uint8List

*   Description: Returns the real content of a tag. This might be equal to valueBytes for some tags.
*   Inherited: Yes

### noSuchMethod(Invocation invocation) → dynamic

*   Description: Invoked when a nonexistent method or property is accessed.
*   Inherited: Yes

### toHexString() → String

*   Inherited: Yes

### toString() → String

*   Description: A string representation of this object.
*   Override: Yes

### valueBytes() → Uint8List

*   Description: Return just the value bytes.
*   Inherited: Yes
```

--------------------------------

### ASN1BitString.fromBytes Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1BitString/ASN1BitString.fromBytes.html

Initializes an ASN1BitString with unused bits and the string value derived from the provided bytes. The first byte of the input bytes represents the unused bits, and the subsequent bytes form the string value.

```dart
ASN1BitString.fromBytes(super.bytes) : super.fromBytes() {
  unusedbits = valueBytes()[0];
  stringValue = valueBytes().sublist(1);
}
```

--------------------------------

### ASN1BMPString.fromBytes Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1BMPString/ASN1BMPString.fromBytes.html

This snippet shows the implementation of the ASN1BMPString.fromBytes constructor. It takes a Uint8List of bytes, decodes them by merging high and low octets, and then converts the resulting integer list into a string using utf8.decode.

```Dart
ASN1BMPString.fromBytes(super.bytes) : super.fromBytes() {
  var octets = valueBytes();
  var mergedOctets = <int>[];

  for (var i = 0; i < octets.length;) {
    var hi = octets[i++];
    var lo = octets[i++];
    mergedOctets.add((hi << 8) | lo);
  }

  stringValue = utf8.decode(mergedOctets);
}
```

--------------------------------

### ASN1BitString.fromBytes Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1BitString/ASN1BitString.fromBytes.html

Creates an ASN1BitString from an encoded list of bytes. The first byte of the input `bytes` is interpreted as the number of unused bits in the last byte of the value.

```APIDOC
## ASN1BitString.fromBytes(Uint8List bytes)

### Description
Creates an ASN1BitString from an encoded list of bytes.

### Parameters
#### Path Parameters
- **bytes** (Uint8List) - Required - The encoded list of bytes representing the ASN1BitString.

### Implementation Details
This constructor initializes the `unusedbits` property with the first byte of the input `bytes` and the `stringValue` with the remaining bytes.
```

--------------------------------

### ASN1OctetString Constructors

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1OctetString-class.html

Constructors for creating an ASN1OctetString. You can initialize it with a String or a List<int>, or from an encoded list of bytes.

```APIDOC
## ASN1OctetString Constructors

### ASN1OctetString(dynamic octets, {int tag = OCTET_STRING_TYPE})

  Create an ASN1OctetString initialized with a String or a List<int>. Optionally override the default ASN1 tag.

### ASN1OctetString.fromBytes(Uint8List bytes)

  Create an ASN1OctetString from an encoded list of bytes.
```

--------------------------------

### ASN1Integer.fromInt Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Integer/ASN1Integer.fromInt.html

This snippet shows the implementation of the ASN1Integer.fromInt constructor. It initializes the integer value and triggers the encoding process.

```dart
ASN1Integer.fromInt(int x, {super.tag = INTEGER_TYPE}) {
  valueAsBigInteger = BigInt.from(x);
  _encode();
}
```

--------------------------------

### ASN1Set.fromBytes Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Set/ASN1Set.fromBytes.html

This snippet shows the implementation of the ASN1Set.fromBytes constructor. It validates that the provided bytes correspond to a set type before proceeding with decoding.

```dart
ASN1Set.fromBytes(
  super.bytes
) : super.fromBytes() {
  if (!isSet(tag)) {
    throw ASN1Exception('The tag $tag does not look like a set type');
  }
  _decodeSet();
}
```

--------------------------------

### Define APPLICATION_CLASS Constant

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/APPLICATION_CLASS-constant.html

Defines the APPLICATION_CLASS constant with a value of 0x40. This is a top-level constant.

```c
const int APPLICATION_CLASS = 0x40;
```

--------------------------------

### ASN1TeletextString Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1TeletextString/ASN1TeletextString.html

Creates an ASN1TeletextString initialized with a String value. Optionally, you can override the tag.

```APIDOC
## ASN1TeletextString Constructor

### Description
Creates an ASN1TeletextString initialized with a String value. Optionally, you can override the tag.

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Method Signature
```dart
ASN1TeletextString(String stringValue, {int tag = UTF8_STRING_TYPE})
```

### Parameters
- **stringValue** (String) - Required - The string value to initialize the ASN1TeletextString with.
- **tag** (int) - Optional - The tag to override the default UTF8_STRING_TYPE.

### Implementation
```dart
ASN1TeletextString(this.stringValue, {super.tag = UTF8_STRING_TYPE});
```
```

--------------------------------

### ASN1UtcTime.fromBytes Constructor

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1UtcTime/ASN1UtcTime.fromBytes.html

Constructs an ASN1UtcTime object by parsing a Uint8List of bytes. It handles the conversion of the ASN.1 UTC Time format (which uses a two-digit year and specific separators) into a standard DateTime object, including year prefixing and T separator insertion.

```APIDOC
## ASN1UtcTime.fromBytes constructor

### Description
Creates an ASN1UtcTime from an encoded list of bytes.

### Parameters
#### Path Parameters
- **bytes** (Uint8List) - Required - The list of bytes representing the ASN.1 UTC Time.

### Implementation Details
The constructor parses the byte value, decodes it to an ASCII string, adjusts the two-digit year to a four-digit year (assuming 19xx for years > 75 and 20xx otherwise), inserts a 'T' separator between the date and time, and then parses the resulting string into a DateTime object.
```

--------------------------------

### ASN1Null.fromBytes Constructor Implementation

Source: https://pub.dev/documentation/asn1lib/latest/asn1lib/ASN1Null/ASN1Null.fromBytes.html

The ASN1Null.fromBytes constructor initializes the object with the provided byte list.

```dart
ASN1Null.fromBytes(super.bytes) : super.fromBytes();
```
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