Squashed 'librocksdb-sys/rocksdb/' changes from 2776c764d..e542f605a

e542f605a Revert "trying with memcpy in openssl"
1f28422b7 Revert "randomize only the IV part of prefix"

git-subtree-dir: librocksdb-sys/rocksdb
git-subtree-split: e542f605ac709ee497dbf7e6aedf97837bf8af8c

librocksdb-sys/rocksdb/plugin/openssl/openssl_provider.cc

@@ -191,28 +191,28 @@ Status OpensslCipherStream::Encrypt(uint64_t fileOffset, char* data,
   EVP_CIPHER_CTX_set_padding(ctx_, 0);
 
   if (offset == 0) {
-    unsigned char *out = (unsigned char*)malloc(dataSize);
+    //unsigned char *out = (unsigned char*)malloc(dataSize);
-    if( 1 != EVP_EncryptUpdate(ctx_, out, &len, reinterpret_cast<const unsigned char *>(data), static_cast<int>(dataSize))) {err_str="Failed to encrypt."; goto error;}
+    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);
+    //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};
+    //unsigned char zero_block_out[kBlockSize]{0};
-    if( 1 != EVP_EncryptUpdate(ctx_, zero_block_out, &len, zero_block, static_cast<int>(kBlockSize))) {err_str="Failed to encrypt zero block."; goto error;}
+    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_out[offset + i];
+    for (size_t i = 0; i < n; ++i) data[i] ^= zero_block[offset + i];
-    //memset(zero_block, 0, kBlockSize);
+    memset(zero_block, 0, kBlockSize);
 
     n = kBlockSize - offset;
     if (dataSize > n) {
       char* ptr = (char*)(data + n);
-      unsigned char *out = (unsigned char*)malloc(dataSize - n);
+      //unsigned char *out = (unsigned char*)malloc(dataSize - n);
-      if( 1 != EVP_EncryptUpdate(ctx_, out, &len, reinterpret_cast<const unsigned char *>(ptr), static_cast<int>(dataSize - n))) {err_str="Failed to encrypt remaining."; goto error;}
+      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);
+      //memcpy(ptr, out, dataSize - n);
       //end = reinterpret_cast<unsigned char *>(ptr) + len;
     }
 
@@ -270,7 +270,7 @@ Status OpensslProvider::AddCipher(const std::string& /*descriptor*/,
 
 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>(OpensslCipherStream::kBlockSize)) ){
+  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.");