91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
|
#pragma once
|
||
|
|
|
||
|
|
#include "keys.hpp"
|
||
|
|
#include "sha.hpp"
|
||
|
|
#include <vanetza/common/byte_buffer.hpp>
|
||
|
|
#include <boost/optional/optional.hpp>
|
||
|
|
#include <memory>
|
||
|
|
|
||
|
|
namespace vanetza
|
||
|
|
{
|
||
|
|
namespace pki
|
||
|
|
{
|
||
|
|
|
||
|
|
class SecurityModule
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
class EciesContext
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
virtual ~EciesContext() = default;
|
||
|
|
virtual PublicKey ephemeral_public_key() const = 0;
|
||
|
|
virtual PublicKey recipient_public_key() const = 0;
|
||
|
|
virtual ByteBuffer shared_secret() const = 0;
|
||
|
|
virtual ByteBuffer encrypted_key() const = 0;
|
||
|
|
virtual ByteBuffer authentication_tag() const = 0;
|
||
|
|
virtual ByteBuffer nonce() const = 0;
|
||
|
|
virtual void nonce(const ByteBuffer&) = 0;
|
||
|
|
|
||
|
|
virtual ByteBuffer encrypt(const ByteBuffer& plaintext) = 0;
|
||
|
|
virtual ByteBuffer decrypt(const std::uint8_t* buffer, std::size_t length) = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
virtual ~SecurityModule() = default;
|
||
|
|
virtual Sha256Hash calculate_sha256_hash(const std::uint8_t* buffer, std::size_t length) = 0;
|
||
|
|
virtual Sha384Hash calculate_sha384_hash(const std::uint8_t* buffer, std::size_t length) = 0;
|
||
|
|
virtual bool verify(const Sha256Hash&, const Signature&, const PublicKey&) = 0;
|
||
|
|
virtual bool verify(const Sha384Hash&, const Signature&, const PublicKey&) = 0;
|
||
|
|
|
||
|
|
virtual boost::optional<Signature> sign(const ByteBuffer& digest, const PublicKey&) = 0;
|
||
|
|
|
||
|
|
// True if the private key matching `key` is available for signing.
|
||
|
|
virtual bool can_sign(const PublicKey& key);
|
||
|
|
|
||
|
|
virtual PublicKey create_key(KeyType) = 0;
|
||
|
|
virtual bool discard_key(const PublicKey&) = 0;
|
||
|
|
|
||
|
|
virtual ByteBuffer generate_nonce(std::size_t length) = 0;
|
||
|
|
virtual std::unique_ptr<EciesContext> create_ecies_context(const PublicKey& receiver, const Sha256Hash& info) = 0;
|
||
|
|
virtual ByteBuffer calculate_hmac_sha256(const ByteBuffer& key, const ByteBuffer& data) = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
class ScopedKeyPair
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
ScopedKeyPair(SecurityModule& sm, KeyType type) : m_security(&sm), m_public_key(sm.create_key(type))
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
// no copy
|
||
|
|
ScopedKeyPair(const ScopedKeyPair&) = delete;
|
||
|
|
ScopedKeyPair& operator=(const ScopedKeyPair&) = delete;
|
||
|
|
// no move
|
||
|
|
ScopedKeyPair(ScopedKeyPair&&) = delete;
|
||
|
|
ScopedKeyPair& operator=(ScopedKeyPair&&) = delete;
|
||
|
|
|
||
|
|
~ScopedKeyPair()
|
||
|
|
{
|
||
|
|
if (m_security) {
|
||
|
|
m_security->discard_key(m_public_key);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const PublicKey& public_key() const
|
||
|
|
{
|
||
|
|
return m_public_key;
|
||
|
|
}
|
||
|
|
|
||
|
|
void commit()
|
||
|
|
{
|
||
|
|
// will no longer discard created key
|
||
|
|
m_security = nullptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
SecurityModule* m_security = nullptr;
|
||
|
|
PublicKey m_public_key;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace pki
|
||
|
|
} // namespace vanetza
|