futher understanding keys

keys are signatures for software. they are use as logical security. the key means permission for the features on the software. it is use to identify the sources that sent requests and data. Nintendo use asymmetric
encryption, where private keys are in consoles and cartridges with the console having a public key to decry the private one. it is design so that someone can't guess the private key which is uses for the consoles to check for legitimately. the store brought games have the nintendo private key while the games that are copied online can't be run because the key is missing. this also prevents the consoles from being hacked from the software updates. also it is use to confirm pockets of data are from a location and encrypt the data itself. the keys are usually a string of bits. a bit is binary; 1 or 0. the standard for symmetric key in sense 2001 is greater or equal to 128bits. there are more combinations then 10 to the 8th power on the calculator that are design to not repeat. For Asymmetric keys 1024bits is said to be about as secure as 80bits symmetric key by the RSA. through how can keys be cracked? the difference in securty between symmetric key and asymmetric keys could be because it's easier to guess but it still a large number. the keys grow as the computers get faster.