Class TEncryptFilter

TEncryptFilter

Support

Supported from 5.0

Description

An encrypting filter.

An object of this type is used by REncryptStream to encrypt stream data as it is written to a target stream.

Encryption itself is performed by an encryption handling object, an instance of a class implementing the CSecurityEncryptBase interface.

Derivation

MStreamBuf A stream buffer that provides a generic I/O interface for streamed data TEncryptFilter An encrypting filter TSecureFilter Base class used in the derivation of TEncryptFilter and TDecryptFilter TStreamFilter Interface to a stream filter

Defined in TEncryptFilter:
Set(), TEncryptFilter()

Inherited from MStreamBuf:
SeekL(), Close(), DoSeekL(), ERead, EWrite, PushL(), Read(), ReadL(), Release(), SeekL(), SizeL(), Synch(), SynchL(), TMark, TRead, TWrite, TellL(), Write(), WriteL()

Inherited from TStreamFilter:
Committed(), DoReadL(), DoRelease(), DoSynchL(), DoWriteL(), EmitL(), FilterL(), IsCommitted()

See also:

• REncryptStream
• CSecurityEncryptBase
• CSecurityBase

TEncryptFilter();

Description

Constructs an empty encrypting filter object.

The encrypting filter must be set up before use.

See also:

• Set()

void Set(MStreamBuf* aHost,CSecurityEncryptBase* aKey,TInt aMode=EWrite);

Description

Sets up the encrypting filter.

Parameters

MStreamBuf* aHost The stream buffer that is the target for encrypted data. CSecurityEncryptBase* aKey An encryption handling object. TInt aMode The mode in which the stream buffer is to be used. By default, this is write mode as represented by EWrite.

See also:

• MStreamBuf::TWrite
• TStreamFilter::Set()