Abstract: The system of the present disclosure comprises memory for storing a compiled program. The system further comprises logic configured to translate the compiled program into a set of human-readable instructions and construct a coarse tree representing the program flow of the set of human-readable instructions. The logic is further configured to compute a first type signature representative of a code construct comprising alternative code paths within the program flow and determine a second type signature representative of the coarse tree based upon the first type signature.

Abstract: A code verification system is utilized to type check compiled code. The code verification system includes memory and a code verifier. The memory is utilized to store a compiled program. The code verifier analyzes instructions of the program and generates a plurality of type signatures based on the instructions The type signatures indicate the input type constraints and the output type descriptions of the instructions, and the code verifier analyzes the type signatures to detect a type error.

Abstract: The system of the present disclosure comprises memory for storing a compiled program. The system further comprises logic configured to translate the compiled program into a set of human-readable instructions and construct a coarse tree representing the program flow of the set of human-readable instructions. The logic is further configured to compute a first type signature representative of a code construct comprising alternative code paths within the program flow and determine a second type signature representative of the coarse tree based upon the first type signature.

Abstract: A method of installing an application on a target electronic device comprises receiving the application in the target device in unconcentrated form, concentrating the application in the target device, and installing the concentrated application in non-volatile memory of the target device. This method may be performed, for example, by an installer program stored on a medium for storing computer-readable instructions. The installer program, when executed, causes a host device to concentrate an unconcentrated application and install the concentrated application in non-volatile memory of the host device.

Abstract: A code verification system is utilized to type check compiled code. The code verification system includes memory and a code verifier. The memory is utilized to store a compiled program. The code verifier analyzes instructions of the program and generates a plurality of type signatures based on the instructions The type signatures indicate the input type constraints and the output type descriptions of the instructions, and the code verifier analyzes the type signatures to detect a type error.