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In computing, compiler correctness is the branch of computer science that deals with trying to show that a compiler behaves according to its language specification. [citation needed] Techniques include developing the compiler using formal methods and using rigorous testing (often called compiler validation) on an existing compiler.
HMAC-based one-time password (HOTP) is a one-time password (OTP) algorithm based on HMAC. It is a cornerstone of the Initiative for Open Authentication (OATH). HOTP was published as an informational IETF RFC 4226 in December 2005, documenting the algorithm along with a Java implementation. Since then, the algorithm has been adopted by many ...
MALPAS – A formal methods tool that uses directed graphs and regular algebra to prove that software under analysis correctly meets its mathematical specification. Polyspace – Uses abstract interpretation, a formal methods based technique, [17] to detect and prove the absence of certain run time errors in source code for C/C++, and Ada
The SPARK programming language provides a toolset which enables software development with formal verification and is used in several high-integrity systems. [citation needed] The CompCert C compiler is a formally verified C compiler implementing the majority of ISO C. [23] [24]
An open-source PHP web based self-hosted OTP generator, designed for both mobile and desktop. Yes, web based No No Yes Yes Yes No Yes totp-cli [37] Popular, feature rich open-source two-factor authenticator. No account required. Manually No Yes Yes No No No No Unknown Unknown Unknown Unknown Unknown Open Authenticator [38]
Check that the variable is initialized (without obtaining the lock). If it is initialized, return it immediately. Obtain the lock. Double-check whether the variable has already been initialized: if another thread acquired the lock first, it may have already done the initialization. If so, return the initialized variable.
A method named split-time verification, first introduced in the Java Platform, Micro Edition (J2ME), is used in the JVM since Java version 6. It splits the verification of Java bytecode in two phases: [15] Design-time – when compiling a class from source to bytecode; Runtime – when loading a class. In practice this method works by capturing ...
Its main applications are extended static checking, test case generation, and predicate abstraction. [citation needed] Z3 was open sourced in the beginning of 2015. [3] The source code is licensed under MIT License and hosted on GitHub. [4] The solver can be built using Visual Studio, a makefile or using CMake and runs on Windows, FreeBSD ...