The biggest difference between them? Encryption is reversible — hashing is not. The length of the hash generated is usually fixed and smaller than the original text or string; though it varies widely with even the smallest variations in input. It is almost humanly impossible to revert a good hashing digest back to its original form. There are different hashing algorithms used in hashing. Here are some of the most important ones:. MD5: MD5 used to be the most popular hash algorithm which converted a byte hash value to a bit hexadecimal number.
It has been deprecated from use because of vulnerabilities found in it, but it can still be used as a checksum to verify data integrity only against unintentional corruption. SHA-0 has been deprecated from use thanks to its susceptibilities. This algorithm was soon replaced by the SHA-1 algorithm.
However, it was found to be insecure and since , many organizations recommended its replacement with SHA-2 algorithms. In , all major browsers deprecated the use of SHA It might be carrying the family name but SHA-2 is significantly different from its predecessor. Encryption is the process of turning a data into a series of unreadable characters which are not of a fixed length.
The key difference between encryption and hashing lies in the fact that in case of encryption, the unreadable data can be decrypted to display the original plaintext data with the help of the right key, whereas in hashing, this cannot be done at all. Encryption of data is done through the use of cryptographic keys. Based on the nature of the keys, encryption can be done in two ways — namely, symmetric encryption and asymmetric encryption.
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You might also like. December 16, For example, if you write hello world horizontally, it will look like as below and its output ciphertext will look as holewdlo lr.
Polyalphabetic Ciphers : Polyalphabetic cipher works on substitution method where multiple alphabets are substituted with each other. Vigenere cipher is a popular method used in Polyalphabetic Ciphers. Polyalphabetic cipher uses an alphabet letter instead of numeric key like A is used for key 0 while B is used for key 1 and so on. Nomenclator Ciphers : Nomenclator is a type of substitution cipher in which specific symbols are used to convert plain text into ciphertext.
This cipher uses a sheet of letter, syllable, word substitution table, and symbols are converted into numbers. Nomenclator was used in the 15th century for political correspondence and spying. Encryption uses a specific algorithm to encode or decode the data. Encryption algorithms are also known as ciphers and are divided into two categories, symmetric and asymmetric:. Symmetric Cipher uses only one key for both encryption and decryption of data.
The user uses the key to encode the information and forwards it to the webserver who decodes the data utilizing the exact same key. So, without access to the key, no one can decipher this information even if they know the inner workings of encryption algorithms. Advanced Encryption Standard and Twofish are the most popular symmetric ciphers. In asymmetric cipher, a pair of keys is utilized to scramble and unscramble the information. A public key is shared between the user and the webserver to create a session key while the private key is kept secret by the webserver.
The encoded information coming from the user is decoded by the webserver using the private key. This makes the asymmetric cipher safer than the symmetric cipher. The primary object of encryption is to safeguard the information from spying activities. Plain text information seems a soft target for cyber thieves as they can easily read the passing plain text data between the client and the browser.
When you have encrypted the website, it means all the information will be passed between two ends remains encoded and there is no worry of prying eyes. Encryption brings some elements with it like confidentiality, strong authentication, limited access control, data encryption. Encrypted messages are impossible to intercept by another person. It can be only deciphered who has a private key. In case of a breach, a culprit can be traced easily, and a breach can be sorted easily.
The certificate authority also authenticates the details submitted to get an SSL certificate. AES is a type of symmetric ciphers that encodes bits of data at a time.
The key that is used to decrypt the data can be of different sizes like bit, bit, or bit. The bit key ciphers the information in 10 rounds, the bit key in 12 steps, and the bit key in 14 stages.
AES has proven itself to be highly efficient and reliable over the last few years. This method of encryption is widely used by many organizations for both the stored data and the information being transferred between two communicating sides. RSA being an asymmetric cipher algorithm works on two keys for encryption and decryption of the information travels between a user and a web server. RSA algorithm works by factorizing the multiple of two large prime numbers. RSA is a weak algorithm because of the different vulnerabilities that have been exploited by hackers many a times.
It has improved the DES cipher algorithm and uses a bit key data to encrypt the blocks. It applies the DES encryption process three times on every information set. Both encryption and hashing algorithms are used to protect the data from cyber-criminals. But both these schemes work differently in any given scenario. Hashing secures the data from almost all type of attacks, but it is difficult to achieve.
So, for this reason, encryption has a more practical use over hashing in most cases. However, their functionality varies with the change in the given situation. Hence, you must select between the two strategies depending upon the situation. If you want to encrypt the website, it is not too late.
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