Cryptography and some tool and techniques for hiding information

Cryptography and some tool and techniques for hiding information

In computer science cryptography is a method of hiding information in storage and during a communication so that only authorized people can access that information.  Cryptography contain lot of cryptology method for securing communication and information like hiding text or messages behind images, Asymmetric encryption (public key cryptography) for securing Networks. In this article we are going to discuss some common and popular cryptography tool and techniques.




Steganography

Steganography is a method of hiding information, messages or files behind an image especially from the people who could snoop on our messages. A picture file contains some unused space in it and that space can be used for storing messages or some information in it. The good part is, a snooper would have no idea that the picture has some hidden information in it.

Recommend tool: You can use LSB-Steganography for hiding file into image which is an open source software program for steganography.


Rot13

Rot13 or Rotated by 13 is a simple cryptography system where the first letter of a word gets replaced with the 13 letter down the alphabet as there are 26 letters alphabet so the algorithm that encodes the message also decodes it. We can also use Rot12, Rot14 and a lot of other Rot cipher. 

Recommend tool: There are lots of sites which provide Rot13 encode and decode service which you can use I would recommend to use Rot13.com to use. 



Secure Shell



Secure shell provides secure communication by securing a network. It is a cryptographic network protocol so that you can secure your communication over an insecure connection. Most common use of this protocol is in remote login services where connection is encrypted with a secure shell so that no third party can snoop on the password in that network. Secure shell is also used for secure file transfer which Secure File Transfer Protocol (SFTP). SFTP is a subsystem of secure shell for handling file transfer, some advantage of SFTP is it encrypts username as well as password and the file which is being transferred over that network.

Recommend Tool: There are a lot of applications of secure shell but I will provide IronSFTP which is an open source program for Secure end-to-end encrypted file sharing over secure shell.






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