Abstract: A system and a method are disclosed for performing encryptions with pre- and post-standard data transformations. The system receives an input that includes cleartext data. The system may apply a pre-encryption to the input by performing one or more rounds of data transformations, and the pre-encryption transforms the cleartext data into non-cleartext data. The system applies a core encryption to the non-cleartext data. The core encryption includes a standard cipher algorithm that transforms the non-cleartext data into encrypted ciphertext. The system then applies a post-encryption to the encrypted ciphertext. The post-encryption includes one or more rounds of additional data transformations. The system generates an encryption of the input at a local client device based on an output from the post-encryption. In some embodiments, the pre-encryption, core encryption and post-encryption are under a White-box encryption to protect intermediate data.