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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPH_LIBRBD_CRYPTO_BLOCK_CRYPTO_H
#define CEPH_LIBRBD_CRYPTO_BLOCK_CRYPTO_H
#include "include/Context.h"
#include "librbd/crypto/CryptoInterface.h"
#include "librbd/crypto/openssl/DataCryptor.h"
namespace librbd {
namespace crypto {
template <typename T>
class BlockCrypto : public CryptoInterface {
public:
static BlockCrypto* create(CephContext* cct, DataCryptor<T>* data_cryptor,
uint32_t block_size, uint64_t data_offset) {
return new BlockCrypto(cct, data_cryptor, block_size, data_offset);
}
BlockCrypto(CephContext* cct, DataCryptor<T>* data_cryptor,
uint64_t block_size, uint64_t data_offset);
~BlockCrypto();
int encrypt(ceph::bufferlist* data, uint64_t image_offset) override;
int decrypt(ceph::bufferlist* data, uint64_t image_offset) override;
uint64_t get_block_size() const override {
return m_block_size;
}
uint64_t get_data_offset() const override {
return m_data_offset;
}
const unsigned char* get_key() const override {
return m_data_cryptor->get_key();
}
int get_key_length() const override {
return m_data_cryptor->get_key_length();
}
private:
CephContext* m_cct;
DataCryptor<T>* m_data_cryptor;
uint64_t m_block_size;
uint64_t m_data_offset;
uint32_t m_iv_size;
int crypt(ceph::bufferlist* data, uint64_t image_offset, CipherMode mode);
};
} // namespace crypto
} // namespace librbd
extern template class librbd::crypto::BlockCrypto<EVP_CIPHER_CTX>;
#endif //CEPH_LIBRBD_CRYPTO_BLOCK_CRYPTO_H
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