database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

optimize encryption api

Browse Source 
only one encryption key lookup in most cases instead of three
(has_key, get_key_size, get_key).
This commit is contained in:
Sergei Golubchik
2015-03-31 19:00:51 +02:00
parent c91e3260e2
commit ef5b4889c2
17 changed files with 90 additions and 145 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
plugin/example_key_management/example_key_management_plugin.cc
View File

@ -58,34 +58,23 @@ get_latest_key_version()
return key_version;
}
static int
get_key(unsigned int version, unsigned char* dstbuf, unsigned buflen)
static unsigned int
get_key(unsigned int version, unsigned char* dstbuf, unsigned *buflen)
{
unsigned char *dst = dstbuf;
unsigned len = 0;
for (; len + MD5_HASH_SIZE <= buflen; len += MD5_HASH_SIZE)
if (*buflen < MD5_HASH_SIZE)
{
compute_md5_hash(dst, (const char*)&version, sizeof(version));
dst += MD5_HASH_SIZE;
version++;
}
if (len < buflen)
{
memset(dst, 0, buflen - len);
*buflen= MD5_HASH_SIZE;
return KEY_BUFFER_TOO_SMALL;
}
*buflen= MD5_HASH_SIZE;
if (!dstbuf)
return 0;
my_md5(dstbuf, (const char*)&version, sizeof(version));
return 0;
}
static unsigned int has_key_func(unsigned int keyID)
{
return true;
}
static unsigned int get_key_size(unsigned int keyID)
{
return 16;
}
static int example_key_management_plugin_init(void *p)
{
/* init */
@ -115,8 +104,6 @@ static int example_key_management_plugin_deinit(void *p)
struct st_mariadb_encryption_key_management example_key_management_plugin= {
MariaDB_ENCRYPTION_KEY_MANAGEMENT_INTERFACE_VERSION,
get_latest_key_version,
has_key_func,
get_key_size,
get_key
};