diff --git a/src/crypto/ed25519.zig b/src/crypto/ed25519.zig
index ff6d552..2ffe762 100644
--- a/src/crypto/ed25519.zig
+++ b/src/crypto/ed25519.zig
@@ -5,8 +5,8 @@ pub const Implementation = struct {
     signature_size: comptime_int,
 
     generateKeys: *const fn (pubkey_buffer: *[Implementation.public_key_size]u8, privkey_buffer: *[Implementation.secret_key_size]u8) void,
-    sign: *const fn (key: *const [Implementation.private_key_size]u8, data: *const []const u8, signature_out: *const [Implementation.signature_size]u8) void,
-    verify: *const fn (key: *const [Implementation.public_key_size]u8, data: *const []const u8, signature: *const [Implementation.signature_size]u8) void,
+    sign: *const fn (key: *const [Implementation.private_key_size]u8, data: []const u8, signature_out: *const [Implementation.signature_size]u8) void,
+    verify: *const fn (key: *const [Implementation.public_key_size]u8, signature: *const [Implementation.signature_size]u8, data: []const u8) void,
 };
 
 // Random number generation
@@ -33,17 +33,18 @@ pub fn defaultImplementation(comptime random: rngProvider) type {
             @memcpy(privkey_buffer[0..secret_key_size], keypair.secret_key.bytes);
         }
 
-        pub fn sign(key: *const [secret_key_size]u8, data: *const []const u8, signature_out: *const [signature_size]u8) !void {
+        pub fn sign(key: *const [secret_key_size]u8, data: []const u8, signature_out: *const [signature_size]u8) !void {
             _ = key;
             _ = data;
             _ = signature_out;
             return error.NotImplemented;
         }
 
-        pub fn verify(signature: *const [signature_size]u8, data: *const []const u8) !void {
-            _ = signature;
-            _ = data;
-            return error.NotImplemented;
+        pub fn verify(key: *const [public_key_size]u8, signature: *const [signature_size]u8, data: []const u8) !void {
+            const sig = Ed25519.Signature.fromBytes(signature);
+            const pubkey = Ed25519.PublicKey.fromBytes(key);
+
+            return sig.verify(sig, data, pubkey);
         }
     };