Class CASN1EncBase

class CASN1EncBase : public CBase;

Description

Base class for all ASN.1 types that we can encode.

Derivation

• CBase - Base class for all classes to be instantiated on the heap.

• CASN1EncBase - Base class for all ASN.1 types that we can encode.

Members

Defined in CASN1EncBase:

• CASN1EncBase(const TTagType,const TASN1Class)Protected constructor
• CalculateContentsLengthDER()Calculates number of octets in DER content encoding. Must set value of the appro...
• ConstructL()Must call this version from derived classes in their ConstructL, but only once t...
• IsConstructed()const
• LengthDER()constGives total number of octets in the DER encoding of this object.
• SetTag(const TTagType,const TASN1Class)Sets tag type/class of the encoding object
• WriteContentsDERL(TDes8 &)constWrites DER content encoding into supplied buffer, which is already verified to b...
• WriteDERL(TDes8 &,TUint &)constWrites entire DER encoding of this object into the given buffer.
• WriteLengthDER(TDes8 &)constWrites DER length encoding into supplied buffer, which is already verified to be...
• iContentsLengthDERLength of DER encoded content.
• iLengthLengthDERLength of DER encoded length.
• iTagLengthDERLength of DER encoded tag.
• ~CASN1EncBase()

Inherited from CBase:

• Delete(CBase *)Deletes the specified object.
• Extension_(TUint,TAny *&,TAny *)Extension function
• operator new(TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TAny *)Initialises the object to binary zeroes.
• operator new(TUint,TLeave)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TLeave,TUint)Allocates the object from the heap and then initialises its contents to binary z...
• operator new(TUint,TUint)Allocates the object from the heap and then initialises its contents to binary z...

IMPORT_C ~CASN1EncBase();

Description

protected: IMPORT_C CASN1EncBase(const TTagType aType, const TASN1Class aClass);

Description

Protected constructor

Parameters

protected: IMPORT_C virtual void ConstructL();

Description

Must call this version from derived classes in their ConstructL, but only once they're ready to have CalculateContentsLengthDER called on them.

IMPORT_C TUint LengthDER() const;

Description

Gives total number of octets in the DER encoding of this object.

Return value

IMPORT_C void WriteDERL(TDes8 &aBuf, TUint &aPos) const;

Description

Writes entire DER encoding of this object into the given buffer.

Parameters

IMPORT_C void SetTag(const TTagType aType, const TASN1Class aClass=EContextSpecific);

Description

Sets tag type/class of the encoding object

Parameters

private: virtual void CalculateContentsLengthDER()=0;

Description

Calculates number of octets in DER content encoding. Must set value of the appropriate data member.

private: virtual TBool IsConstructed() const=0;

Description

Return value

private: virtual void WriteLengthDER(TDes8 &aBuf) const;

Description

Writes DER length encoding into supplied buffer, which is already verified to be big enough.

Parameters

private: virtual void WriteContentsDERL(TDes8 &aBuf) const=0;

Description

Writes DER content encoding into supplied buffer, which is already verified to be big enough. Must be implemented by derived classes.

Parameters

protected: TUint iTagLengthDER;

Description

Length of DER encoded tag.

protected: TUint iLengthLengthDER;

Description

Length of DER encoded length.

protected: TUint iContentsLengthDER;

Description

Length of DER encoded content.