编辑

通过

PemEncoding.TryWriteUtf8 Method

Definition

Namespace:
System.Security.Cryptography
Assembly:
System.Security.Cryptography.dll
Source:
PemEncoding.cs

Tries to write the provided data and label as PEM-encoded data into a provided buffer.

public:
 static bool TryWriteUtf8(ReadOnlySpan<System::Byte> utf8Label, ReadOnlySpan<System::Byte> data, Span<System::Byte> destination, [Runtime::InteropServices::Out] int % bytesWritten);
public static bool TryWriteUtf8(ReadOnlySpan<byte> utf8Label, ReadOnlySpan<byte> data, Span<byte> destination, out int bytesWritten);
static member TryWriteUtf8 : ReadOnlySpan<byte> * ReadOnlySpan<byte> * Span<byte> * int -> bool
Public Shared Function TryWriteUtf8 (utf8Label As ReadOnlySpan(Of Byte), data As ReadOnlySpan(Of Byte), destination As Span(Of Byte), ByRef bytesWritten As Integer) As Boolean

Parameters

utf8Label
ReadOnlySpan<Byte>

The label to write.

data
ReadOnlySpan<Byte>

The data to write.

destination
Span<Byte>

The buffer to receive the PEM-encoded text.

bytesWritten
Int32

When this method returns, this parameter contains the number of UTF-8 encoded bytes written to destination.

Returns

Boolean

true if destination is large enough to contain the PEM-encoded text, otherwise false.

Exceptions

ArgumentOutOfRangeException

utf8Label exceeds the maximum possible label length.

-or-

data exceeds the maximum possible encoded data length.

ArgumentException

The resulting PEM-encoded text is larger than MaxValue.

- or -

utf8Label contains invalid characters or is malformed UTF-8.

Remarks

This method always wraps the base-64 encoded text to 64 characters, per the recommended wrapping of IETF RFC 7468. Unix-style line endings are used for line breaks.

Applies to