| It is a method of converting data to a smaller fixed value known as the key, which is then used to represent the original data. | It's the technique of securely encoding data such that only the authorized user with the key or password can get the original data; for everyone else, it SEEMS to be rubbish. |
| By whatever method, the hash code or key cannot be reverted to the original information. It can only be MAPPED, and the hash code is compared; if the hash code is the same, the information is identical; otherwise, it is not. It is not possible to get the original data. | If we KNOW the encryption key and technique used for encryption, we can easily extract the original data. |
| In comparison to encryption, it is more secure. | In comparison to hashing, it is less secure. |
| The goal of hashing is to index and retrieve data from a database. The procedure is really quick. | Encryption transforms data in order to keep it hidden from others. |
| The hashed data is usually short and constant in length. It does not increase in SIZE as the length of information increases. | The length of the encrypted data is not defined. It expands as the amount of data grows longer. |
| Eg:- SHA256 algorithm | Eg:- RSA, AES algorithm |
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