reorganize chapters

consensus/leader_election/README.md

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+## leader election
+
+<br>
+
+### secret leader election
+
+<br>
+
+* **[leader election overview](le_overview.pdf)**
+* **[wtf is a secret leader election, by 2077](https://etherpedia.2077.xyz/posts/wtf-is-secret-leader-election/)**
+* **[secret leader election, by ef](https://ethereum.org/en/roadmap/secret-leader-election/)**
+
+<br>
+
+---
+
+### single secret leader election 
+
+<br>
+
+* **[single secret leader election, by d. boneh et al.](https://eprint.iacr.org/2020/025.pdf)**
+* **[post-quantum single secret leader election, by d. boneh](https://www.youtube.com/watch?v=8caTi0JNGYA)**
+* **[private attacks in longest chain proof-of-stake protocols with ssle, by a. azouv](https://arxiv.org/pdf/2109.07440)** (hiding the identity of the leader)
+* **[a framework for constructing ssle from mpc, backes et al.](https://eprint.iacr.org/2022/1040.pdf)** (computational cost for N parties as low as O(N), garbled circuits, concerns over linear blow-up)
+* **[whisk, a practical shuffle-based SSLE protocol](https://ethresear.ch/t/whisk-a-practical-shuffle-based-ssle-protocol-for-ethereum/11763)** (ef's choice)
+
+<br>
+
+---
+
+### leaderless consensus protocols
+
+<br>
+
+* **[red belly: a secure, fair and scalable open blockchain, crain et al.](https://cognizium.io/uploads/resources/Red%20Belly-A%20secure,%20fair%20and%20scalable%20open%20blockchain%20-%20Tyler%20Crain,%20Christopher%20Natoli,%20Vincent%20Gramoli%20-%202021%20-%20paper.pdf)**