3 files changed, 9 insertions, 0 deletions
diff --git a/openpgp/src/crypto/backend.rs b/openpgp/src/crypto/backend.rs
new file mode 100644
index 00000000..2a57889f
--- /dev/null
+++ b/openpgp/src/crypto/backend.rs
@@ -0,0 +1,7 @@
+//! Concrete implementation of the crypto primitives used by the rest of the
+//! crypto API.
+
+#[cfg(feature = "crypto-nettle")]
+mod nettle;
+#[cfg(feature = "crypto-nettle")]
+pub use self::nettle::*;
diff --git a/openpgp/src/crypto/backend/nettle.rs b/openpgp/src/crypto/backend/nettle.rs
new file mode 100644
index 00000000..451774e2
--- /dev/null
+++ b/openpgp/src/crypto/backend/nettle.rs
@@ -0,0 +1 @@
+//! Implementation of Sequoia crypto API using the Nettle cryptographic library.
diff --git a/openpgp/src/crypto/mod.rs b/openpgp/src/crypto/mod.rs
index 8df483e0..8d2e04fd 100644
--- a/openpgp/src/crypto/mod.rs
+++ b/openpgp/src/crypto/mod.rs
@@ -13,6 +13,7 @@ use crate::Result;
 pub(crate) mod aead;
 mod asymmetric;
 pub use self::asymmetric::{Signer, Decryptor, KeyPair};
+mod backend;
 pub(crate) mod ecdh;
 pub mod hash;
 mod keygrip;