lib: Add Silent Payments module

Author: jlest01

src/constants.rs

@@ -33,6 +33,9 @@ pub const KEY_PAIR_SIZE: usize = 96;
 /// The size of a full ElligatorSwift encoding.
 pub const ELLSWIFT_ENCODING_SIZE: usize = 64;
 
+/// The size of a silent payment public data.
+pub const SILENT_PAYMENTS_PUBLIC_DATA_SIZE: usize = 98;
+
 /// The Prime for the secp256k1 field element.
 #[rustfmt::skip]
 pub const FIELD_SIZE: [u8; 32] = [

src/lib.rs

@@ -166,11 +166,15 @@ pub mod constants;
 pub mod ecdh;
 pub mod ecdsa;
 pub mod ellswift;
+pub mod silentpayments;
 pub mod scalar;
 pub mod schnorr;
 #[cfg(feature = "serde")]
 mod serde_util;
 
+// expose ffi::SilentpaymentsLabelLookupFunction
+pub use ffi::SilentpaymentsLabelLookupFunction;
+
 use core::marker::PhantomData;
 use core::ptr::NonNull;
 use core::{fmt, mem, str};