This website provides various explanations of different methods of encodings and encryption, including how to break some of those by hand!Ĭryptool Online is, generally speaking, quite inferior to the offline version of Cryptool, which has around 300 encryption/encoding algorithms available for you to use. You simply enter the checksum(s)/hash(es), click whatever kind of OK button is there, do whatever CAPTCHAs they have ( if any ), and then, if they have what you're looking for in their database(s), you instantly get the plain-text which you wanted! This huge list of online rainbow table websites, was made by me, using some quick Google searches. For the checksums, you've got the usual ones in the md group, md5, et al, SHA, et al, RipeMD et al, and quite a few even I have never heard about! The added bonus is an automatic number of lines, number of words, and size in bytes tool! The website, is like a 100-in-1 swiss army knife! Type/Copy and paste the text into the box, and instantly get your encodings and even also checksums, in hex, ascii85, binary, oct, Base-32, char/dec, and finally, Base-64. This automatic/ semi-automatic cipher tool is your dream come true! It can automatically/ semi-automatically detect the type of cipher you've just entered, and if you're willing to give it some clues, it can break those ciphers, too! If you're an experienced guy in this field, you will be able to tell the difference just by looking at the text, most of the time, yes, but this added bonus is still cool! This website lets you convert between three different encodings : hex, ascii, and binary There is also a decoding option available, which has the added bonus of figuring out what kind of encoding the text you've entered is. In addition to those tools, there are another 3 different tools that might be helpful for you. This website provides around 23 different ciphers for you to encode, decode or simply experiment with. This list might be frequently updated, as I find new tools, so, make sure that you check it often! u/VectorAlpha /u/Eathed and all the other mods, please sticky this post, so that everybody can benefit from it.
I want to keep this hard for my pupils to crack but just using a set key basically makes it a Caesar cipher which I already have a solution for.This list is not a magic wand, your common sense, and, your skills, are still required.ĭon't think that this list is completely all you need to be able to solve A858's posts. find most frequent letter as E, focus on single letter words as either I or a Public static string decrypt(string phrase)
swap the letter with the index plus the key use position to replace to the new string Int index = SortingLetters.IndexOf(originalLetters) find its position in the sorting letters
String SortingLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" įor (int i = 0 i < originalLetters.Count i++) now change letters into shuffled letters ShuffledLetters.Add(allLetters) Ĭonsole.Write(allLetters + ", ") Int position = rng.Next(0, allLetters.Count) Public static string encrypt(string phrase)įor (int i = 0 i allLetters = new List String cipherText = encrypt(plainText.ToUpper()) The sentence I am using is "This is a test of alans cryptography skills" using System Ĭonsole.WriteLine("Enter the sentence to encrypt") I know I need to use letter frequency and pairs of letters of not sure how to program this perfectly. I have programmed a randomised substitution cipher but cannot work out the decrypt method with it being random. So I am programming out solutions to a few cryptography methods. So I am a teacher and looking to run a little hacking/cryptography club next year.