Ciphertext Compression #4: SSDDH, SSCDH, CSSDDH, and CSSCDH

While this issue talks about phishing, and you should ideally not click on links from internet strangers, this issue is only available via this link and what is life without some danger.

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PS: Sorry for the delay in getting this issue out, summer internship applications took a lot more time than I thought and it cascaded from there.