diff --git a/src/crypto.zig b/src/crypto.zig
index 4fa74f6..e9813cd 100644
--- a/src/crypto.zig
+++ b/src/crypto.zig
@@ -44,15 +44,19 @@ pub const Engine = struct {
 // These functions must follow the same structure as the struct returned by this
 // function and its sub-structs.
 pub fn resolveEngine(comptime provider: PartialEngine) Engine {
+
+    // Used by other engine components
+    const randomImpl = provider.random orelse RANDOM.defaultImplementation;
+
     return .{
         .aes_cbc256 = provider.aes_cbc256 orelse AES.CBC256_DefaultImplementation,
-        .ed25519    = provider.ed25519    orelse ED25519.DefaultImplementation,
+        .ed25519    = provider.ed25519    orelse ED25519.DefaultImplementation(randomImpl),
         .hkdf       = provider.hkdf       orelse HKDF.DefaultImplementation,
         .hmac       = provider.hmac       orelse HMAC.DefaultImplementation,
         .sha256     = provider.sha256     orelse SHA256.DefaultImplementation,
         .sha512     = provider.sha512     orelse SHA512.DefaultImplementation,
         .x25519     = provider.x25519     orelse X25519.DefaultImplementation,
-        .random     = provider.random     orelse RANDOM.DefaultImplementation,
+        .random     = randomImpl,
     };
 }