fork of https://github.com/rust-rocksdb/rust-rocksdb for nextgraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
310 lines
11 KiB
310 lines
11 KiB
/*
|
|
* Copyright (c) 2022-2023 Niko Bonnieure, Par le Peuple, NextGraph.org developers
|
|
* All rights reserved.
|
|
* Licensed under the Apache License, Version 2.0
|
|
* <LICENSE-APACHE2 or http://www.apache.org/licenses/LICENSE-2.0>
|
|
* or the MIT license <LICENSE-MIT or http://opensource.org/licenses/MIT>,
|
|
* at your option. All files in the project carrying such
|
|
* notice may not be copied, modified, or distributed except
|
|
* according to those terms.
|
|
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// Copyright (c) 2020 Intel Corporation
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
*/
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
|
|
#include "openssl_provider.h"
|
|
|
|
#include <rocksdb/utilities/object_registry.h>
|
|
#include "rocksdb/utilities/customizable_util.h"
|
|
#include <memory>
|
|
#include <openssl/rand.h>
|
|
#include <openssl/err.h>
|
|
#include <stdint.h>
|
|
#include <limits.h>
|
|
#include "portable_endian.h"
|
|
|
|
#endif
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
|
|
static void RegisterEncryptionAES() {
|
|
static std::once_flag once;
|
|
std::call_once(once, [&]() {
|
|
|
|
ERR_load_crypto_strings();
|
|
|
|
ObjectLibrary::Default()->AddFactory<EncryptionProvider>(
|
|
OpensslProvider::kName(),
|
|
[](const std::string& /* uri */, std::unique_ptr<EncryptionProvider>* f,
|
|
std::string* /* errmsg */) {
|
|
*f = OpensslProvider::CreateProvider();
|
|
return f->get();
|
|
});
|
|
|
|
});
|
|
}
|
|
|
|
Status EncryptionProvider::CreateFromString(
|
|
const ConfigOptions& config_options, const std::string& value,
|
|
std::shared_ptr<EncryptionProvider>* result) {
|
|
RegisterEncryptionAES();
|
|
return LoadSharedObject<EncryptionProvider>(config_options, value, result);
|
|
}
|
|
|
|
// extern "C" FactoryFunc<EncryptionProvider> ippcp_reg;
|
|
|
|
// FactoryFunc<EncryptionProvider> ippcp_reg =
|
|
// ObjectLibrary::Default()->AddFactory<EncryptionProvider>(
|
|
// OpensslProvider::kName(),
|
|
// [](const std::string& /* uri */, std::unique_ptr<EncryptionProvider>* f,
|
|
// std::string* /* errmsg */) {
|
|
// *f = OpensslProvider::CreateProvider();
|
|
// return f->get();
|
|
// });
|
|
|
|
// OpensslCipherStream implements BlockAccessCipherStream using AES block
|
|
// cipher and a CTR mode of operation.
|
|
//
|
|
class OpensslCipherStream : public BlockAccessCipherStream {
|
|
public:
|
|
static constexpr size_t kBlockSize = 16; // in bytes
|
|
//static constexpr size_t kCounterLen = 64; // in bits
|
|
|
|
OpensslCipherStream(const EVP_CIPHER *aes_cipher, const unsigned char* key, const char* init_vector);
|
|
|
|
~OpensslCipherStream();
|
|
|
|
virtual Status Encrypt(uint64_t fileOffset, char* data,
|
|
size_t dataSize) override;
|
|
virtual Status Decrypt(uint64_t fileOffset, char* data,
|
|
size_t dataSize) override;
|
|
virtual size_t BlockSize() override { return kBlockSize; }
|
|
|
|
protected:
|
|
// These functions are not needed and will never be called!
|
|
virtual void AllocateScratch(std::string&) override {}
|
|
virtual Status EncryptBlock(uint64_t, char*, char*) override {
|
|
return Status::NotSupported("Operation not supported.");
|
|
}
|
|
virtual Status DecryptBlock(uint64_t, char*, char*) override {
|
|
return Status::NotSupported("Operation not supported.");
|
|
}
|
|
|
|
private:
|
|
const EVP_CIPHER *aes_cipher_;
|
|
const unsigned char* key_;
|
|
char init_vector_[kBlockSize];
|
|
|
|
Status handleErrors(const char * str);
|
|
};
|
|
|
|
OpensslCipherStream::OpensslCipherStream(const EVP_CIPHER *aes_cipher,
|
|
const unsigned char* key,
|
|
const char* init_vector)
|
|
: aes_cipher_(aes_cipher), key_(key) {
|
|
memcpy(init_vector_,init_vector,kBlockSize);
|
|
//ctx_ = EVP_CIPHER_CTX_new();
|
|
}
|
|
|
|
OpensslCipherStream::~OpensslCipherStream() {
|
|
//EVP_CIPHER_free(aes_cipher_);
|
|
//if (ctx_ != nullptr) EVP_CIPHER_CTX_free(ctx_);
|
|
}
|
|
|
|
Status OpensslCipherStream::handleErrors(const char * str) {
|
|
# ifndef OPENSSL_NO_STDIO
|
|
ERR_print_errors_fp(stderr);
|
|
# endif
|
|
|
|
// if (ctx_ != nullptr) {
|
|
// EVP_CIPHER_CTX_free(ctx_);
|
|
// ctx_ = nullptr;
|
|
// }
|
|
return Status::Aborted(str);
|
|
}
|
|
|
|
// #include <inttypes.h>
|
|
// void printb(const char * name, const char * buffer, size_t n) {
|
|
// int nn = static_cast<int>(n);
|
|
// printf("%s (%d)\n",name,nn);
|
|
// for(int i = 0; i<nn; i++)
|
|
// printf("%x ", static_cast<unsigned char>(buffer[i]));
|
|
|
|
// printf("\n");
|
|
// }
|
|
|
|
Status OpensslCipherStream::Encrypt(uint64_t fileOffset, char* data,
|
|
size_t dataSize) {
|
|
if (dataSize == 0) return Status::OK();
|
|
|
|
const char * err_str = nullptr;
|
|
|
|
EVP_CIPHER_CTX* ctx_ = EVP_CIPHER_CTX_new();
|
|
// if ( 1 != EVP_CIPHER_CTX_reset(ctx_)) { err_str="Failed to reset context."; goto error; }
|
|
|
|
size_t index = fileOffset / kBlockSize;
|
|
size_t offset = fileOffset % kBlockSize;
|
|
|
|
// printf("\nfileOffset %" PRIu64 " INDEX %zu OFFSET %zu\n",fileOffset,index,offset);
|
|
// printb("data",data,dataSize);
|
|
|
|
unsigned char ctr_block[kBlockSize];
|
|
|
|
uint64_t init_vector_lower_part;
|
|
memcpy(&init_vector_lower_part, init_vector_+8, sizeof init_vector_lower_part);
|
|
// printb("right part of IV",init_vector_+8,8);
|
|
|
|
uint64_t init_vector_lower_part_h = be64toh(init_vector_lower_part);
|
|
// printf("right part of IV as host %" PRIu64 "\n",init_vector_lower_part_h);
|
|
|
|
memcpy(ctr_block, init_vector_, 8);
|
|
ctr_block[7] &= 254; // we zero the right-most bit, for the eventual remainder
|
|
// printb("left part of IV",(const char*)ctr_block,8);
|
|
|
|
if (index > ULLONG_MAX - init_vector_lower_part_h) {
|
|
// we have an overflow already now, even before dataSize is added
|
|
// we set the remainder bit
|
|
// use |= 1 to set the right-most last bit to 1 (the remainder)
|
|
ctr_block[7] |= 1;
|
|
// printf("will overflow\n");
|
|
// printb("new left part of IV",(const char*)ctr_block,8);
|
|
}
|
|
|
|
uint64_t be_counter = htobe64(index + init_vector_lower_part_h);
|
|
// printf("counter as host %" PRIu64 "\n",index + init_vector_lower_part_h);
|
|
// printf("counter as BE %" PRIu64 "\n",be_counter);
|
|
char* ptr_counter = (char*)&be_counter;
|
|
for (size_t i = 8; i < 16; ++i)
|
|
ctr_block[i] = ptr_counter[i-8];
|
|
|
|
// printb("right part of IV",(const char*)ctr_block+8,8);
|
|
|
|
int len;
|
|
|
|
if( 1 != EVP_EncryptInit_ex(ctx_, aes_cipher_, NULL, key_, ctr_block)) {err_str="Failed to init cipher."; goto error;}
|
|
EVP_CIPHER_CTX_set_padding(ctx_, 0);
|
|
|
|
if (offset == 0) {
|
|
//unsigned char *out = (unsigned char*)malloc(dataSize);
|
|
if( 1 != EVP_EncryptUpdate(ctx_, reinterpret_cast<unsigned char *>(data), &len, reinterpret_cast<const unsigned char *>(data), static_cast<int>(dataSize))) {err_str="Failed to encrypt."; goto error;}
|
|
//memcpy(data, out, dataSize);
|
|
//EVP_EncryptFinal_ex(ctx_, reinterpret_cast<unsigned char *>(data) + len, &len);
|
|
|
|
} else {
|
|
|
|
unsigned char zero_block[kBlockSize]{0};
|
|
//unsigned char zero_block_out[kBlockSize]{0};
|
|
if( 1 != EVP_EncryptUpdate(ctx_, zero_block, &len, zero_block, static_cast<int>(kBlockSize))) {err_str="Failed to encrypt zero block."; goto error;}
|
|
//unsigned char * end = reinterpret_cast<unsigned char *>(zero_block) + len;
|
|
|
|
size_t n = std::min(kBlockSize - offset, dataSize);
|
|
for (size_t i = 0; i < n; ++i) data[i] ^= zero_block[offset + i];
|
|
memset(zero_block, 0, kBlockSize);
|
|
|
|
n = kBlockSize - offset;
|
|
if (dataSize > n) {
|
|
char* ptr = (char*)(data + n);
|
|
//unsigned char *out = (unsigned char*)malloc(dataSize - n);
|
|
if( 1 != EVP_EncryptUpdate(ctx_, reinterpret_cast<unsigned char *>(ptr), &len, reinterpret_cast<const unsigned char *>(ptr), static_cast<int>(dataSize - n))) {err_str="Failed to encrypt remaining."; goto error;}
|
|
//memcpy(ptr, out, dataSize - n);
|
|
//end = reinterpret_cast<unsigned char *>(ptr) + len;
|
|
}
|
|
|
|
//EVP_EncryptFinal_ex(ctx_, end, &len);
|
|
}
|
|
|
|
if (ctx_ != nullptr) EVP_CIPHER_CTX_free(ctx_);
|
|
|
|
return Status::OK();
|
|
|
|
error:
|
|
if (ctx_ != nullptr) EVP_CIPHER_CTX_free(ctx_);
|
|
ERR_print_errors_fp(stderr);
|
|
if (err_str != nullptr) return Status::Aborted(err_str);
|
|
else return Status::Aborted("unknown error");
|
|
|
|
}
|
|
|
|
Status OpensslCipherStream::Decrypt(uint64_t fileOffset, char* data,
|
|
size_t dataSize) {
|
|
// Decryption is implemented as encryption in CTR mode of operation
|
|
return Encrypt(fileOffset, data, dataSize);
|
|
}
|
|
|
|
std::unique_ptr<EncryptionProvider> OpensslProvider::CreateProvider() {
|
|
return std::unique_ptr<EncryptionProvider>(new OpensslProvider);
|
|
}
|
|
|
|
Status OpensslProvider::handleErrors (const char * str) const {
|
|
# ifndef OPENSSL_NO_STDIO
|
|
ERR_print_errors_fp(stderr);
|
|
# endif
|
|
return Status::Aborted(str);
|
|
}
|
|
|
|
Status OpensslProvider::AddCipher(const std::string& /*descriptor*/,
|
|
const char* cipher, size_t len,
|
|
bool /*for_write*/) {
|
|
// We currently don't support more than one encryption key
|
|
if (aes_cipher_ != nullptr) {
|
|
return Status::InvalidArgument("Multiple encryption keys not supported.");
|
|
}
|
|
|
|
if (len == 16) { aes_cipher_ = EVP_aes_128_ctr(); }
|
|
else if (len == 24) { aes_cipher_ = EVP_aes_192_ctr(); }
|
|
else if (len == 32) { aes_cipher_ = EVP_aes_256_ctr(); }
|
|
else return Status::InvalidArgument("Invalid key size in provider.");
|
|
|
|
memcpy(key_,cipher,len);
|
|
|
|
//if( 1 != EVP_CIPHER_up_ref(aes_cipher_)) return handleErrors("Failed to create provider.");
|
|
|
|
return Status::OK();
|
|
}
|
|
|
|
Status OpensslProvider::CreateNewPrefix(const std::string& /*fname*/,
|
|
char* prefix, size_t prefixLength) const {
|
|
if (1 != RAND_bytes(reinterpret_cast<unsigned char *>(prefix), static_cast<int>(prefixLength)) ){
|
|
return handleErrors("Failed to get random numbers.");//Status::Aborted(ERR_reason_error_string(ERR_get_error()));
|
|
}
|
|
//if( 1 != EVP_CIPHER_up_ref(aes_cipher_)) return handleErrors("Failed to create OpensslCipherStream.");
|
|
|
|
// printb("new prefix",prefix,32);
|
|
|
|
OpensslCipherStream cs(aes_cipher_, key_, prefix);
|
|
Status s = cs.Encrypt(0, prefix + OpensslCipherStream::kBlockSize,
|
|
prefixLength - OpensslCipherStream::kBlockSize);
|
|
// printb("encoded prefix",prefix + OpensslCipherStream::kBlockSize,16);
|
|
return s;
|
|
}
|
|
|
|
Status OpensslProvider::CreateCipherStream(
|
|
const std::string& /*fname*/, const EnvOptions& /*options*/, Slice& prefix,
|
|
std::unique_ptr<BlockAccessCipherStream>* result) {
|
|
assert(result != nullptr);
|
|
assert(prefix.size() >= OpensslCipherStream::kBlockSize);
|
|
//if( 1 != EVP_CIPHER_up_ref(aes_cipher_)) return handleErrors("Failed to create OpensslCipherStream.");
|
|
result->reset(new OpensslCipherStream(aes_cipher_, key_, prefix.data()));
|
|
Status status = (*result)->Decrypt(
|
|
0, (char*)prefix.data() + OpensslCipherStream::kBlockSize,
|
|
prefix.size() - OpensslCipherStream::kBlockSize);
|
|
// printb("decoded prefix",(char*)prefix.data() + OpensslCipherStream::kBlockSize,16);
|
|
return status;
|
|
}
|
|
|
|
OpensslProvider::~OpensslProvider() {
|
|
////EVP_CIPHER_free(aes_cipher_);
|
|
//FIXME: zero the key
|
|
//memset(key_, 0, key_len_);
|
|
(void)(key_len_);
|
|
}
|
|
|
|
#endif // ROCKSDB_LITE
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|