diff --git a/ecdh/x25519.go b/ecdh/x25519.go
index 86b1ac3..40b7e38 100644
--- a/ecdh/x25519.go
+++ b/ecdh/x25519.go
@@ -12,19 +12,51 @@ var (
 // CurveX25519 returns the underlying X25519 curve instance.
 func CurveX25519() stdecdh.Curve { return x25519Curve }
 
+// Curve returns the underlying X25519 curve instance.
+//
+// Deprecated: Use [CurveX25519] instead.
+func Curve() stdecdh.Curve { return CurveX25519() }
+
 // NewX25519 returns a KeyExchange helper bound to the X25519 curve.
 func NewX25519() KeyExchange { return x25519Impl }
 
+// New returns a KeyExchange helper bound to the X25519 curve.
+//
+// Deprecated: Use [NewX25519] instead.
+func New() KeyExchange { return NewX25519() }
+
 // GenerateKeyX25519 creates a new private key using crypto/rand.
 func GenerateKeyX25519() (PrivateKey, error) { return x25519Impl.GenerateKey() }
 
+// GenerateKey creates a new private key using crypto/rand.
+//
+// Deprecated: Use [GenerateKeyX25519] instead.
+func GenerateKey() (PrivateKey, error) { return GenerateKeyX25519() }
+
 // NewPrivateKeyX25519 constructs a private key from scalar bytes.
 func NewPrivateKeyX25519(d []byte) (PrivateKey, error) { return x25519Impl.NewPrivateKey(d) }
 
+// NewPrivateKey constructs a private key from scalar bytes.
+//
+// Deprecated: Use [NewPrivateKeyX25519] instead.
+func NewPrivateKey(d []byte) (PrivateKey, error) { return NewPrivateKeyX25519(d) }
+
 // NewPublicKeyX25519 parses a 32-byte Montgomery u-coordinate public key.
 func NewPublicKeyX25519(b []byte) (PublicKey, error) { return x25519Impl.NewPublicKey(b) }
 
+// NewPublicKey parses a 32-byte Montgomery u-coordinate public key.
+//
+// Deprecated: Use [NewPublicKeyX25519] instead.
+func NewPublicKey(b []byte) (PublicKey, error) { return NewPublicKeyX25519(b) }
+
 // SharedSecretX25519 performs the X25519 Diffie-Hellman operation between private and peer.
 func SharedSecretX25519(p PrivateKey, peer PublicKey) ([]byte, error) {
 	return x25519Impl.SharedSecret(p, peer)
 }
+
+// SharedSecret performs the X25519 Diffie-Hellman operation between private and peer.
+//
+// Deprecated: Use [SharedSecretX25519] instead.
+func SharedSecret(p PrivateKey, peer PublicKey) ([]byte, error) {
+	return SharedSecretX25519(p, peer)
+}