diff --git a/src/App.tsx b/src/App.tsx
index 6ebfb8f..b4a10a6 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -59,8 +59,10 @@ function App() {
   const [sm2Message, setSm2Message] = useState('')
   const [sm2Encrypted, setSm2Encrypted] = useState('')
   const [sm2Decrypted, setSm2Decrypted] = useState('')
+  const [sm2SignMessage, setSm2SignMessage] = useState('')
   const [sm2Signature, setSm2Signature] = useState('')
   const [sm2VerifyResult, setSm2VerifyResult] = useState('')
+  const [sm2ActiveTab, setSm2ActiveTab] = useState('encrypt')
   
   // 转换工具状态
   const [hexInput, setHexInput] = useState('')
@@ -172,8 +174,8 @@ function App() {
   // SM2 签名
   const handleSignSm2 = () => {
     try {
-      console.log('开始签名，消息:', sm2Message, '私钥:', sm2PrivateKey)
-      const signature = sm2Sign(sm2Message, sm2PrivateKey)
+      console.log('开始签名，消息:', sm2SignMessage, '私钥:', sm2PrivateKey)
+      const signature = sm2Sign(sm2SignMessage, sm2PrivateKey)
       console.log('签名成功，结果:', signature)
       setSm2Signature(signature)
     } catch (error) {
@@ -185,8 +187,8 @@ function App() {
   // SM2 验证签名
   const handleVerifySm2 = () => {
     try {
-      console.log('开始验签，消息:', sm2Message, '签名:', sm2Signature, '公钥:', sm2PublicKey)
-      const result = sm2Verify(sm2Message, sm2Signature, sm2PublicKey)
+      console.log('开始验签，消息:', sm2SignMessage, '签名:', sm2Signature, '公钥:', sm2PublicKey)
+      const result = sm2Verify(sm2SignMessage, sm2Signature, sm2PublicKey)
       console.log('验签成功，结果:', result)
       setSm2VerifyResult(result ? '验证成功' : '验证失败')
     } catch (error) {
@@ -382,8 +384,8 @@ function App() {
               <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>公钥</label>
               <textarea 
                 value={sm2PublicKey} 
-                readOnly
-                placeholder="公钥将显示在这里" 
+                onChange={(e) => setSm2PublicKey(e.target.value)}
+                placeholder="输入公钥 (hex) 或点击生成密钥对" 
                 style={{
                   width: '100%',
                   padding: '10px',
@@ -399,181 +401,246 @@ function App() {
             </div>
           </div>
           
-          {/* 加密/解密 */}
-          <div style={{ marginBottom: '20px', padding: '15px', backgroundColor: '#2d2d2d', borderRadius: '8px' }}>
-            <h3 style={{ color: '#e0e0e0', marginBottom: '10px' }}>加密/解密</h3>
-            <div className="form-group" style={{ marginBottom: '10px' }}>
-              <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>消息</label>
-              <textarea 
-                value={sm2Message} 
-                onChange={(e) => setSm2Message(e.target.value)}
-                placeholder="输入要加密的消息 (hex)" 
-                style={{
-                  width: '100%',
-                  padding: '10px',
-                  border: '1px solid #333',
-                  borderRadius: '4px',
-                  backgroundColor: '#3d3d3d',
-                  color: '#e0e0e0',
-                  fontSize: '14px',
-                  resize: 'vertical',
-                  minHeight: '100px'
-                }}
-              />
-            </div>
-            <div className="form-group" style={{ marginBottom: '10px' }}>
-              <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>加密结果</label>
-              <textarea 
-                value={sm2Encrypted} 
-                onChange={(e) => setSm2Encrypted(e.target.value)}
-                placeholder="输入加密结果 (hex)" 
-                style={{
-                  width: '100%',
-                  padding: '10px',
-                  border: '1px solid #333',
-                  borderRadius: '4px',
-                  backgroundColor: '#3d3d3d',
-                  color: '#e0e0e0',
-                  fontSize: '14px',
-                  resize: 'vertical',
-                  minHeight: '100px'
-                }}
-              />
-            </div>
-            <div className="form-group" style={{ marginBottom: '10px' }}>
-              <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>解密结果</label>
-              <textarea 
-                value={sm2Decrypted} 
-                readOnly
-                placeholder="解密结果将显示在这里" 
-                style={{
-                  width: '100%',
-                  padding: '10px',
-                  border: '1px solid #333',
-                  borderRadius: '4px',
-                  backgroundColor: '#3d3d3d',
-                  color: '#e0e0e0',
-                  fontSize: '14px',
-                  resize: 'vertical',
-                  minHeight: '100px'
-                }}
-              />
-            </div>
-            <div className="button-group" style={{ display: 'flex', gap: '10px' }}>
+          {/* SM2 功能选项卡 */}
+          <div style={{ marginBottom: '20px' }}>
+            <div style={{ display: 'flex', borderBottom: '1px solid #333', marginBottom: '20px', backgroundColor: '#2d2d2d', borderRadius: '8px 8px 0 0', overflow: 'hidden' }}>
               <button 
-                onClick={handleEncryptSm2}
+                className={`tab ${sm2ActiveTab === 'encrypt' ? 'active' : ''}`} 
+                onClick={() => setSm2ActiveTab('encrypt')}
                 style={{
-                  padding: '10px 20px',
+                  padding: '12px 24px',
                   border: 'none',
-                  borderRadius: '4px',
-                  background: '#f59e0b',
-                  color: '#121212',
-                  fontSize: '16px',
-                  fontWeight: 'bold',
+                  background: sm2ActiveTab === 'encrypt' ? '#333' : '#2d2d2d',
                   cursor: 'pointer',
-                  transition: 'background 0.3s ease',
-                  flex: 1
+                  fontSize: '16px',
+                  fontWeight: sm2ActiveTab === 'encrypt' ? 'bold' : 'normal',
+                  color: sm2ActiveTab === 'encrypt' ? '#f59e0b' : '#e0e0e0',
+                  outline: 'none',
+                  transition: 'all 0.3s ease',
+                  borderBottom: sm2ActiveTab === 'encrypt' ? '3px solid #f59e0b' : 'none'
                 }}
               >
-                加密
+                加密/解密
               </button>
               <button 
-                onClick={handleDecryptSm2}
+                className={`tab ${sm2ActiveTab === 'sign' ? 'active' : ''}`} 
+                onClick={() => setSm2ActiveTab('sign')}
                 style={{
-                  padding: '10px 20px',
+                  padding: '12px 24px',
                   border: 'none',
-                  borderRadius: '4px',
-                  background: '#f59e0b',
-                  color: '#121212',
-                  fontSize: '16px',
-                  fontWeight: 'bold',
+                  background: sm2ActiveTab === 'sign' ? '#333' : '#2d2d2d',
                   cursor: 'pointer',
-                  transition: 'background 0.3s ease',
-                  flex: 1
+                  fontSize: '16px',
+                  fontWeight: sm2ActiveTab === 'sign' ? 'bold' : 'normal',
+                  color: sm2ActiveTab === 'sign' ? '#f59e0b' : '#e0e0e0',
+                  outline: 'none',
+                  transition: 'all 0.3s ease',
+                  borderBottom: sm2ActiveTab === 'sign' ? '3px solid #f59e0b' : 'none'
                 }}
               >
-                解密
+                签名/验证
               </button>
             </div>
-          </div>
-          
-          {/* 签名/验证 */}
-          <div style={{ marginBottom: '20px', padding: '15px', backgroundColor: '#2d2d2d', borderRadius: '8px' }}>
-            <h3 style={{ color: '#e0e0e0', marginBottom: '10px' }}>签名/验证</h3>
-            <div className="form-group" style={{ marginBottom: '10px' }}>
-              <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>签名</label>
-              <textarea 
-                value={sm2Signature} 
-                onChange={(e) => setSm2Signature(e.target.value)}
-                placeholder="输入签名 (hex)" 
-                style={{
-                  width: '100%',
-                  padding: '10px',
-                  border: '1px solid #333',
-                  borderRadius: '4px',
-                  backgroundColor: '#3d3d3d',
-                  color: '#e0e0e0',
-                  fontSize: '14px',
-                  resize: 'vertical',
-                  minHeight: '100px'
-                }}
-              />
-            </div>
-            <div className="form-group" style={{ marginBottom: '10px' }}>
-              <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>验证结果</label>
-              <div 
-                style={{
-                  width: '100%',
-                  padding: '10px',
-                  border: '1px solid #333',
-                  borderRadius: '4px',
-                  backgroundColor: '#3d3d3d',
-                  color: sm2VerifyResult === '验证成功' ? '#4ade80' : sm2VerifyResult === '验证失败' ? '#f87171' : '#e0e0e0',
-                  fontSize: '14px',
-                  minHeight: '40px',
-                  display: 'flex',
-                  alignItems: 'center'
-                }}
-              >
-                {sm2VerifyResult || '验证结果将显示在这里'}
+            
+            {/* 加密/解密 */}
+            {sm2ActiveTab === 'encrypt' && (
+              <div style={{ padding: '15px', backgroundColor: '#2d2d2d', borderRadius: '8px' }}>
+                <h3 style={{ color: '#e0e0e0', marginBottom: '10px' }}>加密/解密</h3>
+                <div className="form-group" style={{ marginBottom: '10px' }}>
+                  <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>消息</label>
+                  <textarea 
+                    value={sm2Message} 
+                    onChange={(e) => setSm2Message(e.target.value)}
+                    placeholder="输入要加密的消息 (hex)" 
+                    style={{
+                      width: '100%',
+                      padding: '10px',
+                      border: '1px solid #333',
+                      borderRadius: '4px',
+                      backgroundColor: '#3d3d3d',
+                      color: '#e0e0e0',
+                      fontSize: '14px',
+                      resize: 'vertical',
+                      minHeight: '100px'
+                    }}
+                  />
+                </div>
+                <div className="form-group" style={{ marginBottom: '10px' }}>
+                  <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>加密结果</label>
+                  <textarea 
+                    value={sm2Encrypted} 
+                    onChange={(e) => setSm2Encrypted(e.target.value)}
+                    placeholder="输入加密结果 (hex)" 
+                    style={{
+                      width: '100%',
+                      padding: '10px',
+                      border: '1px solid #333',
+                      borderRadius: '4px',
+                      backgroundColor: '#3d3d3d',
+                      color: '#e0e0e0',
+                      fontSize: '14px',
+                      resize: 'vertical',
+                      minHeight: '100px'
+                    }}
+                  />
+                </div>
+                <div className="form-group" style={{ marginBottom: '10px' }}>
+                  <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>解密结果</label>
+                  <textarea 
+                    value={sm2Decrypted} 
+                    readOnly
+                    placeholder="解密结果将显示在这里" 
+                    style={{
+                      width: '100%',
+                      padding: '10px',
+                      border: '1px solid #333',
+                      borderRadius: '4px',
+                      backgroundColor: '#3d3d3d',
+                      color: '#e0e0e0',
+                      fontSize: '14px',
+                      resize: 'vertical',
+                      minHeight: '100px'
+                    }}
+                  />
+                </div>
+                <div className="button-group" style={{ display: 'flex', gap: '10px' }}>
+                  <button 
+                    onClick={handleEncryptSm2}
+                    style={{
+                      padding: '10px 20px',
+                      border: 'none',
+                      borderRadius: '4px',
+                      background: '#f59e0b',
+                      color: '#121212',
+                      fontSize: '16px',
+                      fontWeight: 'bold',
+                      cursor: 'pointer',
+                      transition: 'background 0.3s ease',
+                      flex: 1
+                    }}
+                  >
+                    加密
+                  </button>
+                  <button 
+                    onClick={handleDecryptSm2}
+                    style={{
+                      padding: '10px 20px',
+                      border: 'none',
+                      borderRadius: '4px',
+                      background: '#f59e0b',
+                      color: '#121212',
+                      fontSize: '16px',
+                      fontWeight: 'bold',
+                      cursor: 'pointer',
+                      transition: 'background 0.3s ease',
+                      flex: 1
+                    }}
+                  >
+                    解密
+                  </button>
+                </div>
               </div>
-            </div>
-            <div className="button-group" style={{ display: 'flex', gap: '10px' }}>
-              <button 
-                onClick={handleSignSm2}
-                style={{
-                  padding: '10px 20px',
-                  border: 'none',
-                  borderRadius: '4px',
-                  background: '#f59e0b',
-                  color: '#121212',
-                  fontSize: '16px',
-                  fontWeight: 'bold',
-                  cursor: 'pointer',
-                  transition: 'background 0.3s ease',
-                  flex: 1
-                }}
-              >
-                签名
-              </button>
-              <button 
-                onClick={handleVerifySm2}
-                style={{
-                  padding: '10px 20px',
-                  border: 'none',
-                  borderRadius: '4px',
-                  background: '#f59e0b',
-                  color: '#121212',
-                  fontSize: '16px',
-                  fontWeight: 'bold',
-                  cursor: 'pointer',
-                  transition: 'background 0.3s ease',
-                  flex: 1
-                }}
-              >
-                验证签名
-              </button>
-            </div>
+            )}
+            
+            {/* 签名/验证 */}
+            {sm2ActiveTab === 'sign' && (
+              <div style={{ padding: '15px', backgroundColor: '#2d2d2d', borderRadius: '8px' }}>
+                <h3 style={{ color: '#e0e0e0', marginBottom: '10px' }}>签名/验证</h3>
+                <div className="form-group" style={{ marginBottom: '10px' }}>
+                  <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>消息</label>
+                  <textarea 
+                    value={sm2SignMessage} 
+                    onChange={(e) => setSm2SignMessage(e.target.value)}
+                    placeholder="输入要签名的消息 (hex)" 
+                    style={{
+                      width: '100%',
+                      padding: '10px',
+                      border: '1px solid #333',
+                      borderRadius: '4px',
+                      backgroundColor: '#3d3d3d',
+                      color: '#e0e0e0',
+                      fontSize: '14px',
+                      resize: 'vertical',
+                      minHeight: '100px'
+                    }}
+                  />
+                </div>
+                <div className="form-group" style={{ marginBottom: '10px' }}>
+                  <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>签名</label>
+                  <textarea 
+                    value={sm2Signature} 
+                    onChange={(e) => setSm2Signature(e.target.value)}
+                    placeholder="输入签名 (hex)" 
+                    style={{
+                      width: '100%',
+                      padding: '10px',
+                      border: '1px solid #333',
+                      borderRadius: '4px',
+                      backgroundColor: '#3d3d3d',
+                      color: '#e0e0e0',
+                      fontSize: '14px',
+                      resize: 'vertical',
+                      minHeight: '100px'
+                    }}
+                  />
+                </div>
+                <div className="form-group" style={{ marginBottom: '10px' }}>
+                  <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>验证结果</label>
+                  <div 
+                    style={{
+                      width: '100%',
+                      padding: '10px',
+                      border: '1px solid #333',
+                      borderRadius: '4px',
+                      backgroundColor: '#3d3d3d',
+                      color: sm2VerifyResult === '验证成功' ? '#4ade80' : sm2VerifyResult === '验证失败' ? '#f87171' : '#e0e0e0',
+                      fontSize: '14px',
+                      minHeight: '40px',
+                      display: 'flex',
+                      alignItems: 'center'
+                    }}
+                  >
+                    {sm2VerifyResult || '验证结果将显示在这里'}
+                  </div>
+                </div>
+                <div className="button-group" style={{ display: 'flex', gap: '10px' }}>
+                  <button 
+                    onClick={handleSignSm2}
+                    style={{
+                      padding: '10px 20px',
+                      border: 'none',
+                      borderRadius: '4px',
+                      background: '#f59e0b',
+                      color: '#121212',
+                      fontSize: '16px',
+                      fontWeight: 'bold',
+                      cursor: 'pointer',
+                      transition: 'background 0.3s ease',
+                      flex: 1
+                    }}
+                  >
+                    签名
+                  </button>
+                  <button 
+                    onClick={handleVerifySm2}
+                    style={{
+                      padding: '10px 20px',
+                      border: 'none',
+                      borderRadius: '4px',
+                      background: '#f59e0b',
+                      color: '#121212',
+                      fontSize: '16px',
+                      fontWeight: 'bold',
+                      cursor: 'pointer',
+                      transition: 'background 0.3s ease',
+                      flex: 1
+                    }}
+                  >
+                    验证签名
+                  </button>
+                </div>
+              </div>
+            )}
           </div>
         </div>
       )}
diff --git a/src/types/sm-crypto.d.ts b/src/types/sm-crypto.d.ts
index 1662553..e0acce8 100644
--- a/src/types/sm-crypto.d.ts
+++ b/src/types/sm-crypto.d.ts
@@ -10,6 +10,7 @@ declare module 'sm-crypto' {
     doDecrypt: (ciphertext: string, privateKey: string) => string;
     doSignature: (message: string | Uint8Array, privateKey: string, options?: { hash?: boolean, der?: boolean, userId?: string, publicKey?: string, pointPool?: any[] }) => string;
     doVerifySignature: (message: string | Uint8Array, signature: string, publicKey: string, options?: { hash?: boolean, der?: boolean, userId?: string }) => boolean;
+    getPublicKeyFromPrivateKey: (privateKey: string) => string;
   };
   
   export const sm3: {
diff --git a/src/utils/algorithm/sm2.ts b/src/utils/algorithm/sm2.ts
index 26d90f8..e32bbc1 100644
--- a/src/utils/algorithm/sm2.ts
+++ b/src/utils/algorithm/sm2.ts
@@ -15,12 +15,15 @@ export const sm2GenerateKeyPair = (): { privateKey: string; publicKey: string }
 // SM2 从私钥计算公钥
 export const sm2GetPublicKeyFromPrivateKey = (privateKey: string): string => {
   // 验证私钥是否为有效的 hex 字符串
+  if (!privateKey) {
+    throw new Error('Private key is required')
+  }
   if (!isValidHex(privateKey)) {
     throw new Error('Invalid private key: must be hex string')
   }
   
-  const keypair = sm2.generateKeyPairHex(privateKey)
-  return keypair.publicKey
+  const publicKey = sm2.getPublicKeyFromPrivateKey(privateKey)
+  return publicKey
 }
 
 // SM2 加密
diff --git a/src/version.js b/src/version.js
index 3feece3..ce32ffa 100644
--- a/src/version.js
+++ b/src/version.js
@@ -1 +1 @@
-export const VERSION = "V1.0-20260418053331";
\ No newline at end of file
+export const VERSION = "V1.0-20260418065443";
\ No newline at end of file