Hi all, What is the maximum number of elements a CKKS Plaintext can contain in general and in OpenFHE ? Does it depend only on the security model? Thanks

This is an enormous ring dimension. As @narger mentioned, I would not go beyond N=2^{17} on general-purpose CPU implementations. The limits imposed by ultra-large ring dimensions are mostly computational in terms of runtime and space. Security should not be an issue.

Maximum number of slots

FHE Questions

Caesar January 15, 2024, 2:22pm 9

Check this thread, it claims an implementation of matrix multiplication in OpenFHE. Not sure if it supports multiple ciphertexts though.

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Maximum number of slots

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