It looks like the supported hashes and ciphers are hard-coded in the source code. https://github.com/margelo/react-native-quick-crypto/blob/v0.7.0-rc.10/src/Utils.ts#L668 https://github.com/margelo/react-native-quick-crypto/blob/v0.7.0-rc.10/src/Utils.ts#L710 Would it be possible to fetch the result from OpenSSL?