It also includes a cryptographically secure pseudorandom number generator function CryptGenRandom. It is not known if cryptographically secure pseudorandom generators exist. A PRNG suitable for cryptographic applications is called a "cryptographically secure PRNG" (CSPRNG). For this, a cryptographically secure pseudorandom number generator may be used. The Cryptographic Message Syntax (CMS) is the IETF's standard for cryptographically protected messages. Unix-like systems typically include other commands for cryptographically secure checksums, such as sha256sum. A computationally large safe prime is likely to be a cryptographically strong prime. A variety of methods exist for generating strong, cryptographically secure random passwords. It provides cryptographically secure text messaging and file transfers. The Xbox console uses several measures, including cryptographically signed code to obfuscate firmware. They concluded that the protocol was cryptographically sound. These keys are random strings of numbers and are cryptographically related. LimeWire automatically receives a cryptographically signed file, called simpp.xml, containing an IP block list. This renders all user data on the device cryptographically inaccessible. This renderes all user data on the device cryptographically inaccessible.