Fully homomorphic encrypted processing acceleration

A method for reducing calculation time for processing fully homomorphic encrypted (FHE) data, the method comprising:

• receiving FHE data;
• determining, after receiving the FHE data, a first half of a key-switching key by randomly generating the first half of the key-switching key, comprising:
• configuring a random number generator in a first mode;
• and
• generating the first half of the key-switching key in a second mode, comprising repeating until the first half of the key-switching key is complete:
• generating data, using a same seed value, prime value, and generator value;
• producing a residue of the key-switching key based on the generated data;
• and
• loading a new seed value, prime value, and generator value, so a subsequent residue of the first half of the key-switching key is generated from different seed values, prime values, and generator values;
• acquiring a second half of the key-switching key;
• constructing the key-switching key by appending the second half of the key-switching key to the first half of the key-switching key;
• and
• performing a key-switching operation on the FHE data using the key-switching key.