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AsnDecoder.ReadOctetString Method

Definition

Reads an Octet String value from source with a specified tag under the specified encoding rules, returning the contents in a new array.

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

Parameters

source
ReadOnlySpan<Byte>

The buffer containing encoded data.

ruleSet
AsnEncodingRules

The encoding constraints to use when interpreting the data.

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

Byte[]

An array containing the contents of the Octet String value.

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