Botan::PK_Ops::Signature_with_Hash Class Reference

#include <pk_ops_impl.h>

Inheritance diagram for Botan::PK_Ops::Signature_with_Hash:

Public Member Functions
virtual AlgorithmIdentifier	algorithm_identifier () const
secure_vector< uint8_t >	sign (RandomNumberGenerator &rng) override
virtual size_t	signature_length () const =0
void	update (const uint8_t msg[], size_t msg_len) override
	~Signature_with_Hash () override=default

Protected Member Functions
std::string	hash_function () const final
	Signature_with_Hash (std::string_view hash)

Detailed Description

Definition at line 80 of file pk_ops_impl.h.

Constructor & Destructor Documentation

~Signature_with_Hash()

Botan::PK_Ops::Signature_with_Hash::~Signature_with_Hash ( )

overridedefault

Signature_with_Hash()

Botan::PK_Ops::Signature_with_Hash::Signature_with_Hash ( std::string_view hash )

explicitprotected

Definition at line 104 of file pk_ops.cpp.

                                                                  :
      Signature(), m_hash(create_signature_hash(hash)) {}

Member Function Documentation

algorithm_identifier()

AlgorithmIdentifier Botan::PK_Ops::Signature::algorithm_identifier ( ) const

virtualinherited

Return an algorithm identifier associated with this signature scheme.

Default implementation throws an exception

Reimplemented in Botan::XMSS_Signature_Operation.

Definition at line 24 of file pk_ops.cpp.

                                                                {
   throw Not_Implemented("This signature scheme does not have an algorithm identifier available");
}

hash_function()

std::string Botan::PK_Ops::Signature_with_Hash::hash_function ( ) const

inlinefinalprotectedvirtual

Return the hash function being used by this signer

Implements Botan::PK_Ops::Signature.

Definition at line 91 of file pk_ops_impl.h.

{ return m_hash->name(); }

sign()

secure_vector< uint8_t > Botan::PK_Ops::Signature_with_Hash::sign ( RandomNumberGenerator & rng )

overridevirtual

Perform a signature operation

Parameters

rng	a random number generator

Implements Botan::PK_Ops::Signature.

Definition at line 121 of file pk_ops.cpp.

                                                                                 {
   const secure_vector<uint8_t> msg = m_hash->final();
   return raw_sign(msg.data(), msg.size(), rng);
}

signature_length()

virtual size_t Botan::PK_Ops::Signature::signature_length ( ) const

pure virtualinherited

Return an upper bound on the length of the output signature

Implemented in Botan::XMSS_Signature_Operation.

update()

void Botan::PK_Ops::Signature_with_Hash::update ( const uint8_t msg[], size_t msg_len )

overridevirtual

Add more data to the message currently being signed

Parameters

msg	the message
msg_len	the length of msg in bytes

Implements Botan::PK_Ops::Signature.

Definition at line 117 of file pk_ops.cpp.

                                                                          {
   m_hash->update(msg, msg_len);
}

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

• src/lib/pubkey/pk_ops_impl.h
• src/lib/pubkey/pk_ops.cpp