CryptographicBuffer Clase

Definición

Espacio de nombres:

Windows.Security.Cryptography

Contiene métodos estáticos que implementan la funcionalidad de administración de datos común a las operaciones criptográficas.

public ref class CryptographicBuffer abstract sealed

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class CryptographicBuffer final

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public static class CryptographicBuffer

Public Class CryptographicBuffer

Herencia

Object Platform::Object IInspectable CryptographicBuffer

Atributos

ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute

Requisitos de Windows

Familia de dispositivos	Windows 10 (se introdujo en la versión 10.0.10240.0)
API contract	Windows.Foundation.UniversalApiContract (se introdujo en la versión v1.0)

Ejemplos

public void CryptographicBufferOverview()
{
    // 1. Generate random data.
    UInt32 buffLength = 32;
    IBuffer buffRnd = CryptographicBuffer.GenerateRandom(buffLength);
    String strRndData = CryptographicBuffer.EncodeToHexString(buffRnd);

    // 2. Generate a random number.
    UInt32 Rnd = CryptographicBuffer.GenerateRandomNumber();

    // 3. Decode a Base 64 string to a buffer and encode the buffer to a Base64 string.
    String strBase64v1 = "uiwyeroiugfyqcajkds897945234==";
    IBuffer buffFromBase64 = CryptographicBuffer.DecodeFromBase64String(strBase64v1);
    String strBase64v2 = CryptographicBuffer.EncodeToBase64String(buffFromBase64);

    // 4. Decode a hexadecimal string to a buffer and encode the buffer to a hexadecimal string.
    String strHexv1 = "30310AFF";
    IBuffer buffFromHex = CryptographicBuffer.DecodeFromHexString(strHexv1);
    String strHexv2 = CryptographicBuffer.EncodeToHexString(buffFromHex);

    // 5. Convert a strings to binary data and convert binary data to strings.
    String strIn = "Input String";
    IBuffer buffUTF16BE = CryptographicBuffer.ConvertStringToBinary(strIn, BinaryStringEncoding.Utf16BE);
    String  strUTF16BE  = CryptographicBuffer.ConvertBinaryToString(BinaryStringEncoding.Utf16BE, buffUTF16BE);
    IBuffer buffUTF16LE = CryptographicBuffer.ConvertStringToBinary(strIn, BinaryStringEncoding.Utf16LE);
    String  strUTF16LE  = CryptographicBuffer.ConvertBinaryToString(BinaryStringEncoding.Utf16LE, buffUTF16LE);
    IBuffer buffUTF8 = CryptographicBuffer.ConvertStringToBinary(strIn, BinaryStringEncoding.Utf8);
    String  strUTF8  = CryptographicBuffer.ConvertBinaryToString(BinaryStringEncoding.Utf8, buffUTF8);

    // 6. Create a buffer from a byte array and create a byte array from a buffer,
    byte[] arrByte = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
    IBuffer buffFromByteArr = CryptographicBuffer.CreateFromByteArray(arrByte);
    byte[] arrByteNew;
    CryptographicBuffer.CopyToByteArray(buffFromByteArr, out arrByteNew);

    // 7. Compare two buffers. The following Boolean value is true because the code points are equal.
    String strHex = "30310aff";
    String strBase64 = "MDEK/w==";
    IBuffer buff1 = CryptographicBuffer.DecodeFromHexString(strHex);
    IBuffer buff2 = CryptographicBuffer.DecodeFromBase64String(strBase64);
    Boolean bVal = CryptographicBuffer.Compare(buff1, buff2);

}

Métodos

Compare(IBuffer, IBuffer)	Compara dos objetos IBuffer .
ConvertBinaryToString(BinaryStringEncoding, IBuffer)	Convierte un búfer en una cadena codificada.
ConvertStringToBinary(String, BinaryStringEncoding)	Convierte una cadena en un búfer codificado.
CopyToByteArray(IBuffer, Byte[])	Copia un búfer en una matriz de bytes.
CreateFromByteArray(Byte[])	Crea un búfer a partir de una matriz de bytes de entrada.
DecodeFromBase64String(String)	Descodifica una cadena que se ha codificado en base64.
DecodeFromHexString(String)	Descodifica una cadena que se ha codificado hexadecimal.
EncodeToBase64String(IBuffer)	Codifica un búfer en una cadena base64.
EncodeToHexString(IBuffer)	Codifica un búfer en una cadena hexadecimal.
GenerateRandom(UInt32)	Crea un búfer que contiene datos aleatorios.
GenerateRandomNumber()	Crea un número aleatorio.