CSignedObject Class Reference

class CSignedObject : public CBase

Base class for certificates.

v6.0

Inherits from

CSignedObject
- CBase

Public Member Functions
	~CSignedObject()
IMPORT_C const TPtrC8 *	DataElementEncoding(const TUint)
IMPORT_C const TPtrC8	Encoding()
IMPORT_C void	ExternalizeL(RWriteStream &)
IMPORT_C const TPtrC8	Fingerprint()
IMPORT_C void	InternalizeL(RReadStream &)
IMPORT_C void	SetParametersL(const CSigningKeyParameters &)
IMPORT_C const TPtrC8	Signature()
IMPORT_C const TPtrC8	SignedDataL()
IMPORT_C const CSigningAlgorithmIdentifier &	SigningAlgorithm()
IMPORT_C TBool	VerifySignatureL(const TDesC8 &)
IMPORT_C TBool	VerifySignatureL(const TDesC8 &, const TDesC8 &)

Protected Member Functions
TBool	VerifyRSASignatureL(const TDesC8 &)
TBool	VerifyRSASignatureL(const TDesC8 &, const TDesC8 &)

Inherited Functions
	CBase::CBase()
	CBase::Delete(CBase *)
	CBase::Extension_(TUint,TAny &,TAny )
	CBase::operator new(TUint)
	CBase::operator new(TUint,TAny *)
	CBase::operator new(TUint,TLeave)
	CBase::operator new(TUint,TLeave,TUint)
	CBase::operator new(TUint,TUint)
	CBase::~CBase()

Protected Attributes
HBufC8 *	iEncoding
HBufC8 *	iFingerprint
TKeyFactory *	iKeyFactory
CSigningKeyParameters *	iParameters
HBufC8 *	iSignature
CSigningAlgorithmIdentifier *	iSigningAlgorithm

Constructor & Destructor Documentation

~CSignedObject()

IMPORT_C

~CSignedObject

(

)

Destructor.

Frees all resources owned by the object.

Member Functions Documentation

DataElementEncoding(const TUint)

IMPORT_C const TPtrC8 *

DataElementEncoding

(

const TUint

aIndex

)

const [pure virtual]

Gets the encoded data for the specified encoded data element, in the (to be signed) tbsCertificate data structure, of the signed object.

The encoded data for the specified data element of the signed object.

Parameters

const TUint aIndex

The encoded data element position in the tbsCertificate data structure. See the enumeration: CX509Certificate::Anonymous.

Encoding()

IMPORT_C const TPtrC8

Encoding

(

)

const

Gets the entire encoding.

A non-modifiable pointer descriptor representing the entire encoding.

ExternalizeL(RWriteStream &)

IMPORT_C void

ExternalizeL

(

RWriteStream &

aStream

)

const [virtual]

Externalises the encoding of the entire object to a write stream.

The fingerprint and the signed data can be regenerated after restoration.

The presence of this function means that the standard templated operator<<() can be used to externalise objects of this class.

Parameters

RWriteStream & aStream

Stream to which the object should be externalised.

Fingerprint()

IMPORT_C const TPtrC8

Fingerprint

(

)

const

Gets the fingerprint.

The fingerprint returned is the SHA1 hash of the encoding of the entire object.

A non-modifiable pointer descriptor representing the finger print.

InternalizeL(RReadStream &)

IMPORT_C void

InternalizeL

(

RReadStream &

aStream

)

[pure virtual]

Internalises the encoded object from a read stream.

The class makes use of a specification-specific parser class for extracting the various elements, that is provided by a subclass of CSignedObject. For this reason this function is pure virtual.

The presence of this function means that the standard templated operator>>() can be used to internalise objects of this class.

Parameters

RReadStream & aStream

Stream from which the contents of the field should be internalised.

SetParametersL(const CSigningKeyParameters &)

IMPORT_C void

SetParametersL

(

const CSigningKeyParameters &

aParameters

)

Sets the signing key parameters.

Parameters

const CSigningKeyParameters & aParameters

The signing key parameters.

Signature()

IMPORT_C const TPtrC8

Signature

(

)

const

Gets the digital signature.

A non-modifiable pointer descriptor representing the digital signature.

SignedDataL()

IMPORT_C const TPtrC8

SignedDataL

(

)

const [pure virtual]

Gets the signed data.

A non-modifiable pointer descriptor representing the signed data.

SigningAlgorithm()

IMPORT_C const CSigningAlgorithmIdentifier &

SigningAlgorithm

(

)

const

Gets the signing algorithm ID used.

The signing algorithm ID.

VerifyRSASignatureL(const TDesC8 &)

TBool

VerifyRSASignatureL

(

const TDesC8 &

aEncodedKey

)

const [protected]

Verifies a RSA signature using the specified encoded key.

ETrue if the signature is valid, otherwise EFalse.

Parameters

const TDesC8 & aEncodedKey

The encoded key.

VerifyRSASignatureL(const TDesC8 &, const TDesC8 &)

TBool	VerifyRSASignatureL	(	const TDesC8 &	aEncodedKey,
			const TDesC8 &	aHash
		)	const [protected]

Parameters

const TDesC8 & aEncodedKey
const TDesC8 & aHash

VerifySignatureL(const TDesC8 &)

IMPORT_C TBool

VerifySignatureL

(

const TDesC8 &

aEncodedKey

)

const

Verifies a signature using the specified encoded key.

ETrue if the signature is valid, otherwise EFalse.

Parameters

const TDesC8 & aEncodedKey

The encoded key.

VerifySignatureL(const TDesC8 &, const TDesC8 &)

IMPORT_C TBool	VerifySignatureL	(	const TDesC8 &	aEncodedKey,
			const TDesC8 &	aHash
		)	const

Verifies a signature using the specified encoded key and hash.

ETrue if the signature is valid, otherwise EFalse.

Parameters

const TDesC8 & aEncodedKey	The encoded key.
const TDesC8 & aHash	The hash of the data to be validated.

Member Data Documentation

HBufC8 * iEncoding

HBufC8 *

iEncoding

[protected]

A heap descriptor representing the entire encoding.

HBufC8 * iFingerprint

HBufC8 *

iFingerprint

[protected]

The fingerprint.

The SHA1 hash of the encoding of the entire object.

TKeyFactory * iKeyFactory

TKeyFactory *

iKeyFactory

[protected]

A pointer to a key factory object.

CSigningKeyParameters * iParameters

CSigningKeyParameters *

iParameters

[protected]

The signing key parameters

HBufC8 * iSignature

HBufC8 *

iSignature

[protected]

The digital signature.

CSigningAlgorithmIdentifier * iSigningAlgorithm

CSigningAlgorithmIdentifier *

iSigningAlgorithm

[protected]

The signing algorithm ID.