I have used the ECC encryption algorithm to encrypt my data. Now I need to compare the time complexity involved in it with another algorithm. I need to know, what is the time complexity for encrypting a data using the ECC algorithm
The only way to get usable real world data for your situation would be to simply test it and create your own benchmarks.
Try running 1000 operations with ECC and 1000 with RSA, and measure the time.
Time complexity is often not as critical as the implementation. Unless you have something a few degrees higher and tons of rounds, and anyone who has done work with limits in calculus knows the impact of this over time. i.e: N^5/N^2 where N is lets say 100 million messages or something