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# PK_SignatureSchemeWithRecovery Class Reference

`#include <cryptlib.h>`

Inheritance diagram for PK_SignatureSchemeWithRecovery:

List of all members.

## Detailed Description

interface for public-key signers and verifiers with recovery

In a signature scheme with recovery, a verifier is able to extract a message from its valid signature.

Definition at line 1304 of file cryptlib.h.

## Public Member Functions
virtual unsigned int | MaximumRecoverableLength () const=0
| length of longest message that can be fully recovered
virtual bool | AllowLeftoverMessage () const=0
| whether or not messages longer than MaximumRecoverableLength() can be signed
virtual unsigned int | SignatureLength () const=0
| signature length support by this object (as either input or output)
virtual HashTransformation * | NewMessageAccumulator () const=0
| deprecated, please use PK_Signer::NewSignatureAccumulator or PK_Verifier::NewVerificationAccumulator instead

## Member Function Documentation

virtual bool PK_SignatureSchemeWithRecovery::AllowLeftoverMessage | ( |  | ) | const`[pure virtual]`

| whether or not messages longer than MaximumRecoverableLength() can be signed If this function returns false, any message longer than MaximumRecoverableLength() will be truncated for signature and will fail verification. Implemented in SignatureSystemWithRecoveryBaseTemplate< H >.

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

- cryptlib.h