secp256k1 0.15.5

Rust bindings for Pieter Wuille's `libsecp256k1` library. Implements ECDSA for the SECG elliptic curve group secp256k1 and related utilities.
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[![Build Status](https://travis-ci.org/rust-bitcoin/rust-secp256k1.png?branch=master)](https://travis-ci.org/rust-bitcoin/rust-secp256k1)

[Full documentation](https://docs.rs/secp256k1/)

### rust-secp256k1

`rust-secp256k1` is a wrapper around ![libsecp256k1](https://github.com/bitcoin-core/secp256k1),
a C library by Pieter Wuille for producing ECDSA signatures using the SECG curve
`secp256k1`. This library
* exposes type-safe Rust bindings for all `libsecp256k1` functions
* implements key generation
* implements deterministic nonce generation via RFC6979
* implements many unit tests, adding to those already present in `libsecp256k1`
* makes no allocations (except in unit tests) for efficiency and use in freestanding implementations

### Contributing

Contributions to this library are welcome. A few guidelines:

* Any breaking changes must have an accompanied entry in CHANGELOG.md
* No new dependencies, please.
* No crypto should be implemented in Rust, with the possible exception of hash functions. Cryptographic contributions should be directed upstream to libsecp256k1.
* This library should always compile with any combination of features on **Rust 1.22**.