AsnDecoder Class

Definition

Namespace:

System.Formats.Asn1

Assembly:

System.Formats.Asn1.dll

Source:

AsnDecoder.cs

Provides stateless methods for decoding BER-encoded, CER-encoded, and DER-encoded ASN.1 data.

C#

public static class AsnDecoder

Inheritance

Object

AsnDecoder

Methods

DecodeLength(ReadOnlySpan<Byte>, AsnEncodingRules, Int32)	Decodes the data in source as a length value under the specified encoding rules.
ReadBitString(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Int32, Nullable<Asn1Tag>)	Reads a Bit String value from source with a specified tag under the specified encoding rules, returning the contents in a new array.
ReadBoolean(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Nullable<Asn1Tag>)	Reads a Boolean value from source with a specified tag under the specified encoding rules.
ReadCharacterString(ReadOnlySpan<Byte>, AsnEncodingRules, UniversalTagNumber, Int32, Nullable<Asn1Tag>)	Reads the next value as character string with the specified tag and encoding type, returning the decoded string.
ReadEncodedValue(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Int32, Int32)	Locates the contents range for the encoded value at the beginning of the source buffer using the specified encoding rules.
ReadEnumeratedBytes(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Nullable<Asn1Tag>)	Reads an Enumerated value from source with a specified tag under the specified encoding rules, returning the contents as a slice of the buffer.
ReadEnumeratedValue(ReadOnlySpan<Byte>, AsnEncodingRules, Type, Int32, Nullable<Asn1Tag>)	Reads an Enumerated from source with a specified tag under the specified encoding rules, converting it to the non-[FlagsAttribute] enum specified by enumType.
ReadEnumeratedValue<TEnum>(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Nullable<Asn1Tag>)	Reads an Enumerated from source with a specified tag under the specified encoding rules, converting it to the non-[FlagsAttribute] enum specified by TEnum.
ReadGeneralizedTime(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Nullable<Asn1Tag>)	Reads a GeneralizedTime value from source with a specified tag under the specified encoding rules.
ReadInteger(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Nullable<Asn1Tag>)	Reads an Integer value from source with a specified tag under the specified encoding rules.
ReadIntegerBytes(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Nullable<Asn1Tag>)	Reads an Integer value from source with a specified tag under the specified encoding rules, returning the contents as a slice of the buffer.
ReadNamedBitList(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Nullable<Asn1Tag>)	Reads a NamedBitList from source with a specified tag under the specified encoding rules.
ReadNamedBitListValue(ReadOnlySpan<Byte>, AsnEncodingRules, Type, Int32, Nullable<Asn1Tag>)	Reads a NamedBitList from source with a specified tag under the specified encoding rules, converting it to the [FlagsAttribute] enum specified by flagsEnumType.
ReadNamedBitListValue<TFlagsEnum>(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Nullable<Asn1Tag>)	Reads a NamedBitList from source with a specified tag under the specified encoding rules, converting it to the [FlagsAttribute] enum specified by TFlagsEnum.
ReadNull(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Nullable<Asn1Tag>)	Reads a Null value from source with a specified tag under the specified encoding rules.
ReadObjectIdentifier(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Nullable<Asn1Tag>)	Reads an Object Identifier value from source with a specified tag under the specified encoding rules.
ReadOctetString(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Nullable<Asn1Tag>)	Reads an Octet String value from source with a specified tag under the specified encoding rules, returning the contents in a new array.
ReadSequence(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Int32, Int32, Nullable<Asn1Tag>)	Reads a Sequence or Sequence-Of value from source with a specified tag under the specified encoding rules.
ReadSetOf(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Int32, Int32, Boolean, Nullable<Asn1Tag>)	Reads a Set-Of value from source with a specified tag under the specified encoding rules.
ReadUtcTime(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Int32, Nullable<Asn1Tag>)	Reads a UtcTime value from source with a specified tag under the specified encoding rules.
TryDecodeLength(ReadOnlySpan<Byte>, AsnEncodingRules, Nullable<Int32>, Int32)	Attempts to decode the data in source as a length value under the specified encoding rules.
TryReadBitString(ReadOnlySpan<Byte>, Span<Byte>, AsnEncodingRules, Int32, Int32, Int32, Nullable<Asn1Tag>)	Attempts to copy a Bit String value from source with a specified tag under the specified encoding rules into destination.
TryReadCharacterString(ReadOnlySpan<Byte>, Span<Char>, AsnEncodingRules, UniversalTagNumber, Int32, Int32, Nullable<Asn1Tag>)	Reads a character string value from source with a specified tag under the specified encoding rules, copying the decoded string into a provided destination buffer.
TryReadCharacterStringBytes(ReadOnlySpan<Byte>, Span<Byte>, AsnEncodingRules, Asn1Tag, Int32, Int32)	Attempts to read a character string value from source with a specified tag under the specified encoding rules, copying the unprocessed bytes into the provided destination buffer.
TryReadEncodedValue(ReadOnlySpan<Byte>, AsnEncodingRules, Asn1Tag, Int32, Int32, Int32)	Attempts to locate the contents range for the encoded value at the beginning of the source buffer using the specified encoding rules.
TryReadInt32(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, Int32, Nullable<Asn1Tag>)	Attempts to read an Integer value from source with a specified tag under the specified encoding rules as a signed 32-bit value.
TryReadInt64(ReadOnlySpan<Byte>, AsnEncodingRules, Int64, Int32, Nullable<Asn1Tag>)	Attempts to read an Integer value from source with a specified tag under the specified encoding rules as a signed 64-bit value.
TryReadOctetString(ReadOnlySpan<Byte>, Span<Byte>, AsnEncodingRules, Int32, Int32, Nullable<Asn1Tag>)	Attempts to get an Octet String value from source with a specified tag under the specified encoding rules, copying the value into the provided destination buffer.
TryReadPrimitiveBitString(ReadOnlySpan<Byte>, AsnEncodingRules, Int32, ReadOnlySpan<Byte>, Int32, Nullable<Asn1Tag>)	Attempts to get a Bit String value from source with a specified tag under the specified encoding rules, if the value is contained in a single (primitive) encoding.
TryReadPrimitiveCharacterStringBytes(ReadOnlySpan<Byte>, AsnEncodingRules, Asn1Tag, ReadOnlySpan<Byte>, Int32)	Attempts to get an unprocessed character string value from source with a specified tag under the specified encoding rules, if the value is contained in a single (primitive) encoding.
TryReadPrimitiveOctetString(ReadOnlySpan<Byte>, AsnEncodingRules, ReadOnlySpan<Byte>, Int32, Nullable<Asn1Tag>)	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.
TryReadUInt32(ReadOnlySpan<Byte>, AsnEncodingRules, UInt32, Int32, Nullable<Asn1Tag>)	Attempts to read an Integer value from source with a specified tag under the specified encoding rules as an unsigned 32-bit value.
TryReadUInt64(ReadOnlySpan<Byte>, AsnEncodingRules, UInt64, Int32, Nullable<Asn1Tag>)	Attempts to read an Integer value from source with a specified tag under the specified encoding rules as an unsigned 64-bit value.

Applies to