US Patent 11711201 Encoded stack pointers

In one embodiment, an encoded pointer is constructed from a stack pointer that includes offset. The encoded pointer includes the offset value and ciphertext that is based on encrypting a portion of a decorated pointer that includes a maximum offset value. Stack data is encrypted based on the encoded pointer, and the encoded pointer is stored in a stack pointer register of a processor. To access memory, a decoded pointer is constructed based on decrypting the ciphertext of the encoded pointer and the offset value. Encrypted stack data is accessed based on the decoded pointer, and the encrypted stack is decrypted based on the encoded pointer.