Name
AsymmetricKeyExchangeFormatter
Synopsis
public abstract class AsymmetricKeyExchangeFormatter { // Public Constructors public AsymmetricKeyExchangeFormatter( ); // Public Instance Properties public abstract string Parameters{get; } // Public Instance Methods public abstract byte[ ] CreateKeyExchange(byte[ ]data
); public abstract byte[ ] CreateKeyExchange(byte[ ]data
, TypesymAlgType
); public abstract void SetKey(AsymmetricAlgorithmkey
); }
Key exchange formatting allows a sender to encrypt a symmetric secret key value with an asymmetric algorithm and send the result to a recipient, who uses an asymmetric private key to decrypt the data. This process allows for the secure distribution of session keys, which are used with a symmetric algorithm to encrypt a single message. The secret key value is formatted prior to encryption to protect against cryptographic attack.
The abstract AsymmetricKeyExchangeFormatter
class
is the parent for all key exchange formatter implementations. The
CreateKeyExchange( )
method uses an asymmetric
public key to encrypt a symmetric secret key, expressed as a
System.Byte
array. The SetKey(
)
method specifies the
AsymmetricAlgorithm
instance that contains the
public key. The Parameters
property returns an XML
string that describes the key exchange algorithm represented by the
implementation class.
The .NET Framework class library includes the
RSAOAEPKeyExchangeFormatter
and
RSAPKCS1KeyExchangeFormatter
classes, which format a secret key value using either ...
Get Programming .NET Security now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.