CSP is an Internet security mechanism. The full name of CSP is ContentSecurityPolicy, abbreviated as CSP. It is widely used in modern websites and browsers to improve website security and prevent malicious attacks. CSP is a type of HTTP header. CSP tells the browser what content can be loaded, which can effectively limit the execution of malicious scripts. CSP is a hardware and software component in the Windows operating system that provides encryption capabilities. These CSPs can be written to provide various encryption and signature algorithms. Each CSP configured for use by a certain certificate template can potentially support different encryption algorithms and can support different key lengths.