diff --git a/CHANGELOG.md b/CHANGELOG.md
index df9bedd5f..4641bd49b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@
 * 【core   】     DatePattern增加年月格式化常量（pr#220@Gitee）
 * 【core   】     ArrayUtil增加shuffle方法（pr#1255@Github）
 * 【core   】     ArrayUtil部分方法分离至PrimitiveArrayUtil
+* 【crypto 】     opt改为otp包（issue#1257@Github）
 
 ### Bug修复
 * 【cron   】     修复CronTimer可能死循环的问题（issue#1224@Github）
diff --git a/hutool-crypto/src/main/java/cn/hutool/crypto/digest/opt/HOTP.java b/hutool-crypto/src/main/java/cn/hutool/crypto/digest/otp/HOTP.java
similarity index 95%
rename from hutool-crypto/src/main/java/cn/hutool/crypto/digest/opt/HOTP.java
rename to hutool-crypto/src/main/java/cn/hutool/crypto/digest/otp/HOTP.java
index cc3598aa5..ba4b31623 100644
--- a/hutool-crypto/src/main/java/cn/hutool/crypto/digest/opt/HOTP.java
+++ b/hutool-crypto/src/main/java/cn/hutool/crypto/digest/otp/HOTP.java
@@ -1,4 +1,4 @@
-package cn.hutool.crypto.digest.opt;
+package cn.hutool.crypto.digest.otp;
 
 import cn.hutool.crypto.digest.HMac;
 import cn.hutool.crypto.digest.HmacAlgorithm;
diff --git a/hutool-crypto/src/main/java/cn/hutool/crypto/digest/opt/TOPT.java b/hutool-crypto/src/main/java/cn/hutool/crypto/digest/otp/TOTP.java
similarity index 84%
rename from hutool-crypto/src/main/java/cn/hutool/crypto/digest/opt/TOPT.java
rename to hutool-crypto/src/main/java/cn/hutool/crypto/digest/otp/TOTP.java
index 84ec7b5f5..b03214c76 100644
--- a/hutool-crypto/src/main/java/cn/hutool/crypto/digest/opt/TOPT.java
+++ b/hutool-crypto/src/main/java/cn/hutool/crypto/digest/otp/TOTP.java
@@ -1,4 +1,4 @@
-package cn.hutool.crypto.digest.opt;
+package cn.hutool.crypto.digest.otp;
 
 import cn.hutool.crypto.digest.HmacAlgorithm;
 
@@ -13,7 +13,7 @@ import java.time.Instant;
  *
  * @author Looly
  */
-public class TOPT extends HOTP {
+public class TOTP extends HOTP {
 
 	/**
 	 * 默认步进 (30秒).
@@ -27,7 +27,7 @@ public class TOPT extends HOTP {
 	 *
 	 * @param key 共享密码，RFC 4226要求最少128位
 	 */
-	public TOPT(byte[] key) {
+	public TOTP(byte[] key) {
 		this(DEFAULT_TIME_STEP, key);
 	}
 
@@ -37,7 +37,7 @@ public class TOPT extends HOTP {
 	 * @param timeStep 日期步进，用于生成移动因子（moving factor）
 	 * @param key      共享密码，RFC 4226要求最少128位
 	 */
-	public TOPT(Duration timeStep, byte[] key) {
+	public TOTP(Duration timeStep, byte[] key) {
 		this(timeStep, DEFAULT_PASSWORD_LENGTH, key);
 	}
 
@@ -48,7 +48,7 @@ public class TOPT extends HOTP {
 	 * @param passwordLength 密码长度，可以是6,7,8
 	 * @param key            共享密码，RFC 4226要求最少128位
 	 */
-	public TOPT(Duration timeStep, int passwordLength, byte[] key) {
+	public TOTP(Duration timeStep, int passwordLength, byte[] key) {
 		this(timeStep, passwordLength, HOTP_HMAC_ALGORITHM, key);
 	}
 
@@ -60,7 +60,7 @@ public class TOPT extends HOTP {
 	 * @param algorithm      HMAC算法枚举
 	 * @param key            共享密码，RFC 4226要求最少128位
 	 */
-	public TOPT(Duration timeStep, int passwordLength, HmacAlgorithm algorithm, byte[] key) {
+	public TOTP(Duration timeStep, int passwordLength, HmacAlgorithm algorithm, byte[] key) {
 		super(passwordLength, algorithm, key);
 		this.timeStep = timeStep;
 	}
diff --git a/hutool-crypto/src/main/java/cn/hutool/crypto/digest/opt/package-info.java b/hutool-crypto/src/main/java/cn/hutool/crypto/digest/otp/package-info.java
similarity index 88%
rename from hutool-crypto/src/main/java/cn/hutool/crypto/digest/opt/package-info.java
rename to hutool-crypto/src/main/java/cn/hutool/crypto/digest/otp/package-info.java
index e496dd688..be6e2b0f0 100644
--- a/hutool-crypto/src/main/java/cn/hutool/crypto/digest/opt/package-info.java
+++ b/hutool-crypto/src/main/java/cn/hutool/crypto/digest/otp/package-info.java
@@ -11,4 +11,4 @@
  *
  * @author looly
  */
-package cn.hutool.crypto.digest.opt;
\ No newline at end of file
+package cn.hutool.crypto.digest.otp;
\ No newline at end of file