How to make the password more reliable and at the same time not to forget it? There are several options …
Cipher of simple replacement
Ciphers of replacement — the class of cryptography techniques existing almost as much, how many and the alphabet. Its essence consists in replacement of letters with other letters, numbers or characters (sending to cryptography).
Without going deep in particular and cipher subtleties, it is possible to select the simplest cryptography technique — where each letter following it in the alphabet is replaced. For an example we will take the words "cat" and "dog". We cipher: for with in the alphabet there is d (c=d), for a there will be b (a=b), well and t is followed by u (t=u). Ta a formula and for the second word: d=e, o=p, g=h. As a result we receive two ciphers — dbu and eph.
The cipher of simple replacement of letters (through two)
It is impossible to call the cipher of simple replacement very much reliable. It is not difficult to crack it at all if to compare several ciphered sentences or to know the principles of use. But it is possible to experiment and diversify a method. For example, to set own replacement procedure of letters, to add number, etc.
One of options of the enciphering described in Conan Doyle's story "The dancing little men"
It is possible to use a favourite method of conjurers and magicians — mnemonic. It helps to visualize object by means of its complete description, simplifying thereby storing or identification. The similar principle is used in the known saying about colors of a rainbow: "Each (Red) hunter (Orange) wishes (Yellow) know (Green) where (Blue) (Blue) pheasant sits (Violet)".
In the simplified type everything looks approximately so: "and is a pineapple, is a banana, in is a cherry". For creation of the password, use the words corresponding to letters.
Storing of sequence of flowers of a rainbow
For example, it is necessary to create the password for the website bank.com. Let's take as a basis a code from the first two letters from the name of the "b" and "a" web resource. According to construction "b is for banana, an is for Apple" will turn out "bananaapple". Add between them the hyphen and the password will purchase also the necessary character. And if to integrate all this in cipher simple replacement, the password for bank.com will become really reliable nsmsms=s [[; r.
The name of the website at the end of the password
The technical director of the company on network safety of Panda Security Luís Korrons offers the following option:
To make the password unique for each website (without the need for it to write) it is possible to add the name of a web resource to its end.
Let's consider in more detail on the example of the same website bank.com. We will add a prefix to the selected password "at the end - bank". More difficult construction doing the password both clear and difficult will turn out. Too most we make with accounts on social networks "-twitter", "-facebook" and "-linkedin" or the reduced options it seems "-twit", "-face" and "-link".
There are companies which force the clients to change passwords of times in half a year or year. Here too it is possible to find a solution. Just add necessary year, quarter to the beginning or the end of the password. Let's take as a basis already familiar password of "banana", we will add to it the coming 2016 and 1st quarter. banana-16-q1 turns out. And if to make movements on only one key on the keyboard, the password will significantly become complicated and will find a type of nsmsms=3-25=j3.
And here — our unique password, quite difficult, reliable which can be remembered and without special work regularly to change (on months or years).
The size matters
In addition to an encryption it is worth talking also about quality of the password. Its length is important. The complete set includes 26 lowercase letters, 26 capital and 10 digits. Also in the password about 30 special signs can be used. All this says that for each character added to the password, the number of possible options increases by 90 times.