公开(公告)号：WO2016122749A3

公开(公告)日：2016-09-22

申请号：PCT/US2015060713

申请日：2015-11-13

Applicant: SQUARE INC

Inventor： DAI ZOVI DINO

IPC: H04L9/06 ,  H04L9/08 ,  H04L9/38

CPC classification number: H04L9/0819 ,  G06T1/20 ,  H04L9/14 ,  H04L9/3236 ,  H04L2209/16 ,  H04L2209/24 ,  H04L2209/56 ,  H04L2209/805

Abstract: A technique is introduced that can securely displaying decrypted images while preventing these decrypted images against an attempt to capture such. Some aspects of the technique include loading a cryptographic shader into a graphics processor unit (GPU) in the recipient's computer device separate from the CPU in the recipient's computer device. In some embodiments, the cryptographic shader that is loaded includes instructions that implement a white-box cryptographic algorithm to decrypt encrypted images. A cryptographic key is integrated within the white-box cryptographic algorithm so that the cryptographic key is protected from extraction. When the GPU receives the encrypted images, the cryptographic shader can perform decryption processes to generate decrypted images. The decrypted images are loaded by the GPU directly from the GPU into a frame buffer such that the decrypted images are to be displayed without any portion of the decrypted images passing through the CPU.

Abstract translation: 引入了一种技术，其可以安全地显示解密图像，同时防止这些解密图像试图捕获这些解密图像。 该技术的一些方面包括将加密着色器加载到与接收者的计算机设备中的CPU分离的接收者的计算机设备中的图形处理器单元（GPU）中。 在一些实施例中，加载的密码着色器包括实现白盒密码算法以解密加密图像的指令。 密码密钥集成在白盒密码算法中，从而保护密码密钥免受提取。 当GPU接收到加密图像时，密码着色器可以执行解密过程以生成解密图像。 解密图像由GPU直接从GPU加载到帧缓冲器中，使得解密图像将被显示而解密图像的任何部分都不经过CPU。