# External Conan recipes

The subdirectories in this directory contain external libraries used by rippled.

| Folder           | Upstream                                                       | Description                                                                                  |
| :--------------- | :------------------------------------------------------------- | :------------------------------------------------------------------------------------------- |
| `antithesis-sdk` | [Project](https://github.com/antithesishq/antithesis-sdk-cpp/) | [Antithesis](https://antithesis.com/docs/using_antithesis/sdk/cpp/overview.html) SDK for C++ |
| `ed25519-donna`  | [Project](https://github.com/floodyberry/ed25519-donna)        | [Ed25519](http://ed25519.cr.yp.to/) digital signatures                                       |
| `secp256k1`      | [Project](https://github.com/bitcoin-core/secp256k1)           | ECDSA digital signatures using the **secp256k1** curve                                       |