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A browser-based utility that converts infix expressions to postfix or prefix notation and shows the conversion steps. It also evaluates postfix and prefix expressions. The page states that spaces must not be used in the expression. Algorithm steps for the postfix and prefix conversions are presented, and the page was updated on 26 February 2023.
A browser-based tool that calculates primes, encrypts messages with the RSA algorithm and brute-forces decryption of RSA messages given a public key. All primes between 0 and 0 are stored in JavaScript files, and additional primes can be generated and kept until the page reloads.
An online tool that calculates checksums of ASCII or Unicode text and of files up to 5MB, using a list of hash algorithms including MD5, SHA1, SHA256 and SHA512. It states that checksums are commonly used to verify data integrity, such as confirming a downloaded file is error-free.
