Can anyone decrypt this string using PHP?

Question

Today I came across a job ad where you should decrypt a string that holds valid email address using PHP. So they posted this string, that represents crypted email address, and when you decrypt that email address you can send them email and show that you are Senior PHP developer. And they posted another email address for Junior developers. Now this seems to complicated for me so I wont send them email anyway since I already have a job, but I'm wondering is this even possible since you can't have key if using mcrypt functions. Anyway, this is the string: MDA3MTY4MDAwODg4MDE0NzIwMDAwMzg4MDAwNDQ0MDAwNTEyMDAwMzg4MDI1NjAwMDA3NDg4MDA3Mjk2MDAzNTUyMDAyOTQ0MDAwODMyMDAzNjQ4IzYzNzIyMzI4NjY1NjM1 Company name is Aduro, and their emails are xxx@aduro.hr, so we are looking for email that ends with @aduro.hr That string represents valid email address, is anyone good enough to decrypt this?

Accepted Answer

Not an answer, but some observations: ``` MDA3MTY4 MDAwODg4 MDE0NzIw MDAwMzg4 MDAwNDQ0 MDAwNTEy MDAwMzg4 MDI1NjAw MDA3NDg4 MDA3Mjk2 MDAzNTUy MDAyOTQ0 MDAwODMy MDAzNjQ4 IzYzNzIy MzI4NjY1 NjM1 ``` Every column containing a digit only contains digits and lowercase letters. Every column containing an upper case letter does not contain any digits. If it is an e-mail address, then I would tentatively assign `IzYzNzIy` as the dot character '.' Nothing immediately strikes me as likely to be the '@', possibly the `MDI1NjAw` because it is the only one starting with `MDI`. The other non-`MDA`, `MDE0NzIw`, is in the correct position for a punctuation character in someone's name: "Smith-Jones" say. That would leave all the `MDA`s as alphabetic characters. What is happening after the potential dot is anyone's guess. Are there any single letter codes allowed there? `NjM1` could be short for . Maybe we are looking at four character code elements? ``` MDA3 MTY4 MDAw ODg4 MDE0 NzIw etc. ```

Can anyone decrypt this string using PHP?

Solution

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