Using Openssl the mysqldump file can be encrypted before its saved onto the disk.
The following steps show how this can be used:
1) Start with backing up databases using mysqldump
2) Encrypt the backup file and add the password(<secret-pin>) to it so that once this password can decrypt the file
3) To load back, file need to be decrypted into readable format. To Decrypt run
4) Now can can load the databases. To load run