AsnDecoder.TryReadPrimitiveOctetString Method

Definition

Attempts to get an Octet String value from source with a specified tag under the specified encoding rules, if the value is contained in a single (primitive) encoding.

public static bool TryReadPrimitiveOctetString (ReadOnlySpan<byte> source, System.Formats.Asn1.AsnEncodingRules ruleSet, out ReadOnlySpan<byte> value, out int bytesConsumed, System.Formats.Asn1.Asn1Tag? expectedTag = default);
static member TryReadPrimitiveOctetString : ReadOnlySpan<byte> * System.Formats.Asn1.AsnEncodingRules * ReadOnlySpan * int * Nullable<System.Formats.Asn1.Asn1Tag> -> bool
Public Shared Function TryReadPrimitiveOctetString (source As ReadOnlySpan(Of Byte), ruleSet As AsnEncodingRules, ByRef value As ReadOnlySpan(Of Byte), ByRef bytesConsumed As Integer, Optional expectedTag As Nullable(Of Asn1Tag) = Nothing) As Boolean

Parameters

source
ReadOnlySpan<Byte>

The buffer containing encoded data.

ruleSet
AsnEncodingRules

The encoding constraints to use when interpreting the data.

value
ReadOnlySpan<Byte>

On success, receives a slice of the input buffer that corresponds to the value of the Octet String. This parameter is treated as uninitialized.

bytesConsumed
Int32

When this method returns, the total number of bytes for the encoded value. This parameter is treated as uninitialized.

expectedTag
Nullable<Asn1Tag>

The tag to check for before reading, or null for the default tag (Universal 4).

Returns

true if the Octet String value has a primitive encoding; otherwise, false.

Exceptions

ruleSet is not defined.

The next value does not have the correct tag.

-or-

The length encoding is not valid under the current encoding rules.

-or-

The contents are not valid under the current encoding rules.

expectedTag.TagClass is Universal, but expectedTag.TagValue is not correct for the method.

Applies to