diff --git a/src/cmd_decrypt.rs b/src/cmd_decrypt.rs
index e5c55a9..655f31a 100644
--- a/src/cmd_decrypt.rs
+++ b/src/cmd_decrypt.rs
@@ -136,7 +136,8 @@ pub fn decrypt_single(config: &Option<TinyEncryptConfig>,
     Ok(meta.file_length)
 }
 
-fn decrypt_file(file_in: &mut File, file_len: u64, file_out: &mut File, key: &[u8], nonce: &[u8], compress: bool) -> XResult<u64> {
+fn decrypt_file(file_in: &mut File, file_len: u64, file_out: &mut File,
+                key: &[u8], nonce: &[u8], compress: bool) -> XResult<u64> {
     let mut total_len = 0_u64;
     let mut buffer = [0u8; 1024 * 8];
     let key = opt_result!(key.try_into(), "Key is not 32 bytes: {}");
diff --git a/src/cmd_encrypt.rs b/src/cmd_encrypt.rs
index cf0d369..3d8c9d8 100644
--- a/src/cmd_encrypt.rs
+++ b/src/cmd_encrypt.rs
@@ -11,13 +11,19 @@ use rust_util::{debugging, failure, iff, information, opt_result, simple_error,
 use rust_util::util_time::UnixEpochTime;
 use zeroize::Zeroize;
 
-use crate::{util, util_ecdh, util_enc_file, util_p384, util_x25519};
+use crate::{util, util_enc_file, util_p256, util_p384, util_x25519};
 use crate::compress::GzStreamEncoder;
 use crate::config::{TinyEncryptConfig, TinyEncryptConfigEnvelop};
-use crate::consts::{ENC_AES256_GCM_P256, ENC_AES256_GCM_P384, ENC_AES256_GCM_X25519, SALT_COMMENT, TINY_ENC_CONFIG_FILE, TINY_ENC_FILE_EXT};
+use crate::consts::{
+    ENC_AES256_GCM_P256, ENC_AES256_GCM_P384, ENC_AES256_GCM_X25519,
+    SALT_COMMENT, TINY_ENC_CONFIG_FILE, TINY_ENC_FILE_EXT,
+};
 use crate::crypto_aes::{aes_gcm_encrypt, aes_gcm_encrypt_with_salt};
 use crate::crypto_rsa::parse_spki;
-use crate::spec::{EncEncryptedMeta, EncMetadata, TINY_ENCRYPT_VERSION_10, TinyEncryptEnvelop, TinyEncryptEnvelopType, TinyEncryptMeta};
+use crate::spec::{
+    EncEncryptedMeta, EncMetadata, TINY_ENCRYPT_VERSION_10,
+    TinyEncryptEnvelop, TinyEncryptEnvelopType, TinyEncryptMeta,
+};
 use crate::util_process::Progress;
 use crate::wrap_key::{WrapKey, WrapKeyHeader};
 
@@ -194,7 +200,8 @@ fn process_compatible_with_1_0(cmd_encrypt: &CmdEncrypt, mut encrypt_meta: TinyE
     Ok(encrypt_meta)
 }
 
-fn encrypt_file(file_in: &mut File, file_len: u64, file_out: &mut File, key: &[u8], nonce: &[u8], compress: bool, compress_level: &Option<u32>) -> XResult<u64> {
+fn encrypt_file(file_in: &mut File, file_len: u64, file_out: &mut File,
+                key: &[u8], nonce: &[u8], compress: bool, compress_level: &Option<u32>) -> XResult<u64> {
     let mut total_len = 0_u64;
     let mut buffer = [0u8; 1024 * 8];
     let key = opt_result!(key.try_into(), "Key is not 32 bytes: {}");
@@ -269,7 +276,7 @@ fn encrypt_envelops(key: &[u8], envelops: &[&TinyEncryptConfigEnvelop]) -> XResu
 
 fn encrypt_envelop_ecdh(key: &[u8], envelop: &TinyEncryptConfigEnvelop) -> XResult<TinyEncryptEnvelop> {
     let public_key_point_hex = &envelop.public_part;
-    let (shared_secret, ephemeral_spki) = util_ecdh::compute_shared_secret(public_key_point_hex)?;
+    let (shared_secret, ephemeral_spki) = util_p256::compute_shared_secret(public_key_point_hex)?;
 
     encrypt_envelop_shared_secret(key, &shared_secret, &ephemeral_spki, ENC_AES256_GCM_P256, envelop)
 }
diff --git a/src/main.rs b/src/main.rs
index 6ccdca7..66cd086 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -14,7 +14,7 @@ mod util;
 mod util_process;
 mod util_piv;
 mod util_pgp;
-mod util_ecdh;
+mod util_p256;
 mod util_p384;
 mod util_x25519;
 mod compress;
diff --git a/src/util_ecdh.rs b/src/util_p256.rs
similarity index 100%
rename from src/util_ecdh.rs
rename to src/util_p256.rs