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CRSAPKCS1v15Verifier Class Reference

class CRSAPKCS1v15Verifier : public CRSAVerifier

This class verifies RSA signatures given a message and its supposed signature. It follows the RSA PKCS#1 v1.5 with PKCS#1 v1.5 padding specification with the following exception: the VerifyL() function does not hash or in any way manipulate the input data before checking. Thus in order to verify RSA signatures in PKCS#1 v1.5 format, the input data needs to follow PKCS#1 v1.5 specification, i.e. be ASN.1 encoded and prefixed by ASN.1 encoded digestId.

Inherits from

CRSAPKCS1v15Verifier
- CRSAVerifier
  - CVerifier< CRSASignature >
    - CBase

Public Member Functions
	~CRSAPKCS1v15Verifier (void)
HBufC8 *	InverseSignLC (const CRSASignature &)
TInt	MaxInputLength (void)
TInt	MaxOutputLength (void)
IMPORT_C CRSAPKCS1v15Verifier *	NewL (const CRSAPublicKey &)
IMPORT_C CRSAPKCS1v15Verifier *	NewLC (const CRSAPublicKey &)

Protected Member Functions
	CRSAPKCS1v15Verifier (const CRSAPublicKey &)
void	ConstructL (void)

Private Member Functions
	CRSAPKCS1v15Verifier (const CRSAPKCS1v15Verifier &)
CRSAPKCS1v15Verifier &	operator= (const CRSAPKCS1v15Verifier &)

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()
	CRSAVerifier::CRSAVerifier(void)
	CRSAVerifier::VerifyL(const TDesC8 &,const CRSASignature &)const
	CVerifier< CRSASignature >::CVerifier(void)

Protected Attributes
CPaddingPKCS1Signature *	iPadding
const CRSAPublicKey &	iPublicKey

Constructor & Destructor Documentation

CRSAPKCS1v15Verifier(const CRSAPublicKey &)

CRSAPKCS1v15Verifier

(

const CRSAPublicKey &

aKey

)

[protected]

Parameters

const CRSAPublicKey & aKey

CRSAPKCS1v15Verifier(const CRSAPKCS1v15Verifier &)

CRSAPKCS1v15Verifier

(

const CRSAPKCS1v15Verifier &

)

[private]

Parameters

const CRSAPKCS1v15Verifier &

~CRSAPKCS1v15Verifier(void)

~CRSAPKCS1v15Verifier

(

void

)

[virtual]

The destructor frees all resources owned by the object, prior to its destruction.

Parameters

void

Member Functions Documentation

ConstructL(void)

void

ConstructL

(

void

)

[protected]

Parameters

void

InverseSignLC(const CRSASignature &)

HBufC8 *

InverseSignLC

(

const CRSASignature &

aSignature

)

const [virtual]

Performs a decryption operation on a signature using the public key.

This is the inverse of the sign operation, which performs a encryption operation on its input data using the private key. Although this can be used to verify signatures, CRSAVerifier::VerifyL should be used in preference. This method is however required by some security protocols.

Parameters

const CRSASignature & aSignature

The signature to be verified

MaxInputLength(void)

TInt

MaxInputLength

(

void

)

const [virtual]

Parameters

void

MaxOutputLength(void)

TInt

MaxOutputLength

(

void

)

const [virtual]

Gets the maximum size of output that can be generated by this object.

Parameters

void

NewL(const CRSAPublicKey &)

IMPORT_C CRSAPKCS1v15Verifier *

NewL

(

const CRSAPublicKey &

aKey

)

[static]

Creates a new CRSAPKCS1v15Verifier object from a specified RSA public key.

leave: KErrKeySize If the key length is too small

Parameters

const CRSAPublicKey & aKey

The RSA public key to be used for verifying

NewLC(const CRSAPublicKey &)

IMPORT_C CRSAPKCS1v15Verifier *

NewLC

(

const CRSAPublicKey &

aKey

)

[static]

Creates a new CRSAPKCS1v15Verifier object from a specified RSA public key.

The returned pointer is put onto the cleanup stack.

leave: KErrKeySize If the key length is too small

Parameters

const CRSAPublicKey & aKey

The RSA public key to be used for verifying

operator=(const CRSAPKCS1v15Verifier &)

CRSAPKCS1v15Verifier &

operator=

(

const CRSAPKCS1v15Verifier &

)

[private]

Parameters

const CRSAPKCS1v15Verifier &

Member Data Documentation

CPaddingPKCS1Signature * iPadding

CPaddingPKCS1Signature *

iPadding

[protected]

The PKCS#1 v1.5 signature padding

const CRSAPublicKey & iPublicKey

const CRSAPublicKey &

iPublicKey

[protected]

The RSA public key to be used for verification