Signature Class Reference

#include <pk.h>

Collaboration diagram for Signature:

---

Detailed Description

Data type used for digital signature operations.

Public Member Functions
Destructor
virtual	~Signature ()
	Destructor.
Object Reuse and Initialization
void	clear ()
	Clear this object.
int	init (const Key &k)
	Initialize this object based on a specified key.
int	load (const str &x, int isRaw=0)
	Load a raw binary or ASN.1 DER-encoded signature into this object.
Predicates
bool	isRSA () const
	Predicate used to test whether this object contains an RSA signature.
Conversions
template<class T>
T	to () const
	Convert this object into an object of type T.
str	toraw () const
	Convert this object into a str containing a raw signature.
asn	toasn1 () const
	Convert this object into a ASN.1 DER-encoded str object.

---

Member Function Documentation

void clear

(

void

)

[inline]

Clear this object.

Remarks:

Internal signature components are zeroized.

int init

(

const Key &

k

)

Initialize this object based on a specified key.

Parameters:

k

a key whose parameters are inspected and used to initialize this object.

Returns:

0

bool isRSA

(

)

const [inline]

Predicate used to test whether this object contains an RSA signature.

Returns:

true, if this is an RSA signature
0, otherwise

int load	(	const str &	x,
		int	isRaw = 0
	)

Load a raw binary or ASN.1 DER-encoded signature into this object.

Parameters:

	x	ASN.1 DER-encoded signature or binary raw signature
	isRaw	0 if x is ASN.1 encoded 1 if you know x is RAW (function will try RAW anyway, if ASN.1 decoding fails)

Returns:

0 (success)
1, if the signature cannot be loaded
CDK_INVALID_SIGNATURE, if the signature was successfully parsed but doesn't validate against this object's public key.

T to

(

)

const

Convert this object into an object of type T.

Returns:

a class T representation of the signature (typically a binary string)

asn toasn1

(

)

const

Convert this object into a ASN.1 DER-encoded str object.

Returns:

a str containing an ASN.1 DER-encoded signature

str toraw

(

)

const

Convert this object into a str containing a raw signature.

Returns:

a str containing a raw signature

---

The documentation for this class was generated from the following file:

• pk.h

---

ISC Cryptographic Development Kit - User's Guide
Questions? E-mail ISC technical support
Copyright© 2002-2006 Information Security Corp. All rights reserved.