1. More information on some regular conferences on cryptography, e.g., CRYPTO, ASIACRYPT, EUROCRYPT, CHES, TCC, FSE, FC, PET, PKC, SAC, INDOCRYPT, IWIH, etc, can be found on James Muir's LNCS Cryptography page. Thanks to James.
2. Some data comes from Springer LNCS online, Michael Lay's DBLP and Jianying's Crypto and Security Conferences Ranking. Many thanks!
3. The rough rank just represents my personal opinions.