Explore the design and implementation of curve25519-dalek, a pure-Rust implementation of operations on the Curve25519 elliptic curve, in this conference talk from RustConf 2017. Delve into the library's goals and gain a brief overview of its implementation strategy. Examine how Rust language features enable competitive performance without compromising safety or readability, and consider future enhancements for improved safety and performance. Discover how the -dalek library simplifies the implementation of complex cryptographic primitives, such as zero-knowledge proofs, and gain insights into fast, safe, pure-Rust elliptic curve cryptography.