Decrypt the encrypted value.

Naimish Makwana, Ali Benchaaban thanks for the clarification.

Hello Subhrat,

it's not possible to decrypt an MD5 hash. MD5 is a one-way cryptographic hash function, meaning that once a value is hashed using MD5, it cannot be reversed to obtain the original value.

MD5 is designed to be a one-way function for securing data by generating a fixed-length output based on the input message. Even if you have the key (in this case, "GeoData"), you cannot decrypt an MD5 hash because the key is not used in the encryption process.

Thanks

Naimish Makwana

You can't !! 
You should know that MD5 is not an encryption. It's a cryptographic hash. You cannot decrypt a hash back to the original content.

Because of collisions [A collision is where more than one input string can generate the same hash value. MD5's hash result contains such a small number of bits (as far as hashes go), the chances of a collision is higher than other hashes using more bits.], you cannot guarantee that the text that technique comes up with is the only string that generated that hash. They used a dictionary of known hash values representing known strings. It's a "give us a hash value and we look up the string we used to generate that hash".

=> MD5 has been cryptographically broken and considered insecure. For this reason, it should not be used for anything. Instead, developers should switch to the Secure Hash Algorithm or a Symmetric Cryptographic Algorithm.
With current GPUs and hash cracking tools, using MD5 is barely better than using nothing at all. It is always recommended to store user passwords using a hashing algorithm and you should find that it is equally easy to use SHA-2 in place of MD5 in any modern programming framework.