diff --git a/src/lib.rs b/src/lib.rs
index f4fbbc4..4570d03 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -149,7 +149,7 @@ pub fn private_key_ecdh(
     cmd.arg(STANDARD.encode(ephemera_public_key));
 
     let cmd_stdout = run_command_stdout(cmd)?;
-    parse_dh_result(&cmd_stdout)
+    parse_ecdh_result(&cmd_stdout)
 }
 
 pub fn external_sign(external_command: &str, parameter: &str, alg: &str, content: &[u8]) -> XResult<Vec<u8>> {
@@ -175,27 +175,7 @@ pub fn external_ecdh(external_command: &str, parameter: &str, ephemera_public_ke
     cmd.arg(STANDARD.encode(ephemera_public_key));
 
     let cmd_stdout = run_command_stdout(cmd)?;
-    parse_dh_result(&cmd_stdout)
-}
-
-fn parse_sign_result(stdout: &str) -> XResult<Vec<u8>> {
-    if is_success(stdout)? {
-        let sign_result: SignResult = from_str(stdout)?;
-        Ok(STANDARD.decode(&sign_result.signature_base64)?)
-    } else {
-        let error_result: ErrorResult = from_str(stdout)?;
-        simple_error!("{}", error_result.error)
-    }
-}
-
-fn parse_dh_result(stdout: &str) -> XResult<Vec<u8>> {
-    if is_success(stdout)? {
-        let dh_result: DhResult = from_str(stdout)?;
-        Ok(hex::decode(&dh_result.shared_secret_hex)?)
-    } else {
-        let error_result: ErrorResult = from_str(stdout)?;
-        simple_error!("{}", error_result.error)
-    }
+    parse_ecdh_result(&cmd_stdout)
 }
 
 fn run_command_stdout(cmd: Command) -> XResult<String> {
@@ -240,6 +220,26 @@ fn parse_keypair_result(cmd_stdout: &str) -> XResult<KeyMaterial> {
     }
 }
 
+fn parse_sign_result(stdout: &str) -> XResult<Vec<u8>> {
+    if is_success(stdout)? {
+        let sign_result: SignResult = from_str(stdout)?;
+        Ok(STANDARD.decode(&sign_result.signature_base64)?)
+    } else {
+        let error_result: ErrorResult = from_str(stdout)?;
+        simple_error!("{}", error_result.error)
+    }
+}
+
+fn parse_ecdh_result(stdout: &str) -> XResult<Vec<u8>> {
+    if is_success(stdout)? {
+        let dh_result: DhResult = from_str(stdout)?;
+        Ok(hex::decode(&dh_result.shared_secret_hex)?)
+    } else {
+        let error_result: ErrorResult = from_str(stdout)?;
+        simple_error!("{}", error_result.error)
+    }
+}
+
 pub fn from_str<'a, T>(s: &'a str) -> XResult<T>
 where
     T: de::Deserialize<'a>,