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/*
* PKCS #1 v1.5 signature padding
* (C) 1999-2008 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_EMSA_PKCS1_H_
#define BOTAN_EMSA_PKCS1_H_
#include <botan/emsa.h>
#include <botan/hash.h>
namespace Botan {
/**
* PKCS #1 v1.5 signature padding
* aka PKCS #1 block type 1
* aka EMSA3 from IEEE 1363
*/
class BOTAN_PUBLIC_API(2,0) EMSA_PKCS1v15 final : public EMSA
{
public:
/**
* @param hash the hash function to use
*/
explicit EMSA_PKCS1v15(HashFunction* hash);
EMSA* clone() override { return new EMSA_PKCS1v15(m_hash->clone()); }
void update(const uint8_t[], size_t) override;
secure_vector<uint8_t> raw_data() override;
secure_vector<uint8_t> encoding_of(const secure_vector<uint8_t>&, size_t,
RandomNumberGenerator& rng) override;
bool verify(const secure_vector<uint8_t>&, const secure_vector<uint8_t>&,
size_t) override;
std::string name() const override
{ return "EMSA3(" + m_hash->name() + ")"; }
AlgorithmIdentifier config_for_x509(const Private_Key& key,
const std::string& cert_hash_name) const override;
private:
std::unique_ptr<HashFunction> m_hash;
std::vector<uint8_t> m_hash_id;
};
/**
* EMSA_PKCS1v15_Raw which is EMSA_PKCS1v15 without a hash or digest id
* (which according to QCA docs is "identical to PKCS#11's CKM_RSA_PKCS
* mechanism", something I have not confirmed)
*/
class BOTAN_PUBLIC_API(2,0) EMSA_PKCS1v15_Raw final : public EMSA
{
public:
EMSA* clone() override { return new EMSA_PKCS1v15_Raw(); }
void update(const uint8_t[], size_t) override;
secure_vector<uint8_t> raw_data() override;
secure_vector<uint8_t> encoding_of(const secure_vector<uint8_t>&, size_t,
RandomNumberGenerator& rng) override;
bool verify(const secure_vector<uint8_t>&, const secure_vector<uint8_t>&,
size_t) override;
/**
* @param hash_algo if non-empty, the digest id for that hash is
* included in the signature.
*/
EMSA_PKCS1v15_Raw(const std::string& hash_algo = "");
std::string name() const override
{
if(m_hash_name.empty()) return "EMSA3(Raw)";
else return "EMSA3(Raw," + m_hash_name + ")";
}
private:
size_t m_hash_output_len = 0;
std::string m_hash_name;
std::vector<uint8_t> m_hash_id;
secure_vector<uint8_t> m_message;
};
}
#endif
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