adding rocksdb_create_encrypted_env

db/c.cc

@@ -46,6 +46,7 @@
 #include "rocksdb/utilities/write_batch_with_index.h"
 #include "rocksdb/write_batch.h"
 #include "utilities/merge_operators.h"
+#include "rocksdb/env_encryption.h"
 
 using ROCKSDB_NAMESPACE::BackupEngine;
 using ROCKSDB_NAMESPACE::BackupEngineOptions;
@@ -4874,6 +4875,20 @@ rocksdb_env_t* rocksdb_create_default_env() {
   return result;
 }
 
+rocksdb_env_t* rocksdb_create_encrypted_env(const char* key) {
+  rocksdb_env_t* result = new rocksdb_env_t;
+  std::shared_ptr<rocksdb::EncryptionProvider> provider;
+  Status status = rocksdb::EncryptionProvider::CreateFromString(
+      ConfigOptions(), "ippcp", &provider);
+  assert(status.ok());
+  status =
+      provider->AddCipher("", key, 32, false);
+  assert(status.ok());
+  result->rep = NewEncryptedEnv(Env::Default(), provider);
+  result->is_default = true;
+  return result;
+}
+
 rocksdb_env_t* rocksdb_create_mem_env() {
   rocksdb_env_t* result = new rocksdb_env_t;
   result->rep = ROCKSDB_NAMESPACE::NewMemEnv(Env::Default());

include/rocksdb/c.h

@@ -2097,6 +2097,7 @@ extern ROCKSDB_LIBRARY_API void rocksdb_dbpath_destroy(rocksdb_dbpath_t*);
 /* Env */
 
 extern ROCKSDB_LIBRARY_API rocksdb_env_t* rocksdb_create_default_env(void);
+extern ROCKSDB_LIBRARY_API rocksdb_env_t* rocksdb_create_encrypted_env(const char* key);
 extern ROCKSDB_LIBRARY_API rocksdb_env_t* rocksdb_create_mem_env(void);
 extern ROCKSDB_LIBRARY_API void rocksdb_env_set_background_threads(
     rocksdb_env_t* env, int n);