Encrypt large files

Improve this question. So, is it unsecure? Doe, it depends on the specifics of how it is done. If the answers to that question or to the ones linked from it don't answer yours, you may want to edit your question to explain how it differs from the earlier one. Add a comment. Active Oldest Votes. We are talking like 4 decimal orders of magnitude or more compared to symmetric encryption.

Making the modulus larger reduces the number of blocks but worsens the problem, because RSA's execution time grows much faster than linearly with the modulus size even much faster than quadratically, for decryption. Safe RSA-based encryption schemes expand the size of the ciphertext.

RSA with long-term keys does not offer forward secrecy. Improve this answer. Hybrid encryption does not change this. Further, far from all hybrid encryption schemes address re-ordering attacks think of AES-CBC with key in an RSA-encrypted header: reordering ciphertext blocks will correspondingly reorder the plaintext, save for 16 bytes of garbage at the split; and then this can be largely controlled by splitting at known portions of the plaintext.

Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. It is possible that using a library that would better capture processor support, a la AES-NI would significantly improve the result.

Kudos to runako who pointed me to the zstd library. I guess sometimes the new tricks are worth learning. If we can apply really good compression this fast, it will also make the encryption step much faster. Dealing with very large files is still a legitimate and relevant challenge given day to day tasks of data scientists working on huge data sets. How we approach the problem will have real consequences for how effectively we can handle data. Transferring files Please note, if you close your browser the transfer will be cancelled.

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