diff --git a/package-lock.json b/package-lock.json
index dd47761..7747596 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,6 +16,7 @@
         "gmsm-sm2js": "^0.7.1",
         "gmsm-sm3js": "^0.2.0",
         "gmsm-sm4js": "^0.7.0",
+        "jsrsasign": "^11.1.3",
         "node-forge": "^1.4.0",
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
diff --git a/package.json b/package.json
index 1d8b953..dddb50f 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
     "gmsm-sm2js": "^0.7.1",
     "gmsm-sm3js": "^0.2.0",
     "gmsm-sm4js": "^0.7.0",
+    "jsrsasign": "^11.1.3",
     "node-forge": "^1.4.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
diff --git a/src/App.tsx b/src/App.tsx
index 27b989c..bd53de4 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -6,6 +6,7 @@ import { sm4Encrypt, sm4Decrypt } from './utils/algorithm/sm4'
 import { sm2GenerateKeyPair, sm2GetPublicKeyFromPrivateKey, sm2Encrypt, sm2Decrypt, sm2Sign, sm2Verify } from './utils/algorithm/sm2'
 import { parseSm2Cert, parseCertFromFile, generateRootCert, generateAppCert } from './utils/algorithm/cert'
 import { hexToUtf8, utf8ToHex, hexToBase64, base64ToHex } from './utils/convert'
+import { getInfoFromPKCS7, verifyPKCS7 } from './utils/crypto.js'
 
 function App() {
   // 从localStorage读取当前分类，默认sm3
@@ -179,6 +180,12 @@ function App() {
   const [appCert, setAppCert] = useState<string>('')
   const [commonName, setCommonName] = useState<string>('test.example.com')
   const [certError, setCertError] = useState<string>('')
+  
+  // PKCS7 签名工具状态
+  const [pkcs7Signature, setPkcs7Signature] = useState<string>('')
+  const [pkcs7Info, setPkcs7Info] = useState<any>(null)
+  const [originalData, setOriginalData] = useState<string>('')
+  const [verifyResult, setVerifyResult] = useState<string>('')
 
 
 
@@ -318,6 +325,30 @@ function App() {
     }
   }
   
+  // 处理 PKCS7 签名信息提取
+  const handleGetInfoFromPKCS7 = () => {
+    try {
+      const info = getInfoFromPKCS7(pkcs7Signature)
+      setPkcs7Info(info)
+      setCertError('')
+    } catch (error) {
+      setCertError((error as Error).message)
+      setPkcs7Info(null)
+    }
+  }
+  
+  // 处理 PKCS7 签名验证
+  const handleVerifyPKCS7 = () => {
+    try {
+      const result = verifyPKCS7(pkcs7Signature, originalData)
+      setVerifyResult(result ? '验证成功' : '验证失败')
+      setCertError('')
+    } catch (error) {
+      setCertError((error as Error).message)
+      setVerifyResult('')
+    }
+  }
+  
   // SM2 生成密钥对
   const handleGenerateSm2KeyPair = () => {
     try {
@@ -1703,6 +1734,155 @@ function App() {
               </div>
             )}
           </div>
+          
+          {/* PKCS7 签名工具 */}
+          <div style={{ backgroundColor: '#2d2d2d', padding: '15px', borderRadius: '8px', marginTop: '20px' }}>
+            <h3 style={{ color: '#f59e0b', marginBottom: '15px' }}>4. PKCS7 签名工具</h3>
+            
+            <div className="form-group" style={{ marginBottom: '15px' }}>
+              <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>PKCS7 签名数据</label>
+              <textarea 
+                value={pkcs7Signature} 
+                onChange={(e) => setPkcs7Signature(e.target.value)}
+                onContextMenu={(e) => openMenu(e, pkcs7Signature, setPkcs7Signature, false)}
+                onTouchStart={(e) => {
+                  const touchTimer = setTimeout(() => {
+                    openMenu(e, pkcs7Signature, setPkcs7Signature, false)
+                  }, 500)
+                  return () => clearTimeout(touchTimer)
+                }}
+                placeholder="输入 PKCS7 签名数据 (PEM 或 Base64 格式)" 
+                style={{
+                  width: '100%',
+                  padding: '10px',
+                  border: '1px solid #333',
+                  borderRadius: '4px',
+                  backgroundColor: '#3d3d3d',
+                  color: '#e0e0e0',
+                  fontSize: '14px',
+                  resize: 'vertical',
+                  minHeight: '150px'
+                }}
+              />
+            </div>
+            
+            <div className="form-group" style={{ marginBottom: '15px' }}>
+              <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0' }}>原始数据（可选，仅在签名为 detech 模式时需要）</label>
+              <textarea 
+                value={originalData} 
+                onChange={(e) => setOriginalData(e.target.value)}
+                onContextMenu={(e) => openMenu(e, originalData, setOriginalData, false)}
+                onTouchStart={(e) => {
+                  const touchTimer = setTimeout(() => {
+                    openMenu(e, originalData, setOriginalData, false)
+                  }, 500)
+                  return () => clearTimeout(touchTimer)
+                }}
+                placeholder="输入原始数据" 
+                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', marginBottom: '20px' }}>
+              <button 
+                onClick={handleGetInfoFromPKCS7}
+                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
+                }}
+              >
+                从签名中获取信息
+              </button>
+              <button 
+                onClick={handleVerifyPKCS7}
+                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>
+            
+            {verifyResult && (
+              <div style={{ marginBottom: '20px', padding: '10px', borderRadius: '4px', backgroundColor: verifyResult === '验证成功' ? '#166534' : '#7f1d1d' }}>
+                <div style={{ color: verifyResult === '验证成功' ? '#dcfce7' : '#fecaca', fontWeight: 'bold' }}>
+                  验签结果: {verifyResult}
+                </div>
+              </div>
+            )}
+            
+            {pkcs7Info && (
+              <div style={{ backgroundColor: '#3d3d3d', padding: '15px', borderRadius: '8px' }}>
+                <h4 style={{ color: '#f59e0b', marginBottom: '15px' }}>PKCS7 签名信息</h4>
+                
+                {pkcs7Info.cert && (
+                  <div style={{ marginBottom: '15px' }}>
+                    <h5 style={{ color: '#e0e0e0', marginBottom: '10px' }}>证书信息</h5>
+                    <div style={{ marginBottom: '10px' }}>
+                      <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0', fontWeight: 'bold' }}>主题 DN:</label>
+                      <div style={{ color: '#e0e0e0' }}>{pkcs7Info.cert.subjectDN}</div>
+                    </div>
+                    <div style={{ marginBottom: '10px' }}>
+                      <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0', fontWeight: 'bold' }}>签发者 DN:</label>
+                      <div style={{ color: '#e0e0e0' }}>{pkcs7Info.cert.issuerDN}</div>
+                    </div>
+                    <div style={{ marginBottom: '10px' }}>
+                      <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0', fontWeight: 'bold' }}>序列号:</label>
+                      <div style={{ color: '#e0e0e0', wordBreak: 'break-all' }}>{pkcs7Info.cert.serialNumber}</div>
+                    </div>
+                    <div style={{ marginBottom: '10px' }}>
+                      <label style={{ display: 'block', marginBottom: '5px', color: '#e0e0e0', fontWeight: 'bold' }}>有效期:</label>
+                      <div style={{ color: '#e0e0e0' }}>
+                        <div>开始: {pkcs7Info.cert.notBefore}</div>
+                        <div>结束: {pkcs7Info.cert.notAfter}</div>
+                      </div>
+                    </div>
+                  </div>
+                )}
+                
+                {pkcs7Info.publicKey && (
+                  <div style={{ marginBottom: '15px' }}>
+                    <h5 style={{ color: '#e0e0e0', marginBottom: '10px' }}>公钥</h5>
+                    <div style={{ color: '#e0e0e0', wordBreak: 'break-all', whiteSpace: 'pre-wrap' }}>{pkcs7Info.publicKey}</div>
+                  </div>
+                )}
+                
+                {pkcs7Info.signature && (
+                  <div style={{ marginBottom: '15px' }}>
+                    <h5 style={{ color: '#e0e0e0', marginBottom: '10px' }}>签名值</h5>
+                    <div style={{ color: '#e0e0e0', wordBreak: 'break-all' }}>{pkcs7Info.signature}</div>
+                  </div>
+                )}
+              </div>
+            )}
+          </div>
         </div>
       )}
       
diff --git a/src/utils/crypto.d.ts b/src/utils/crypto.d.ts
new file mode 100644
index 0000000..73faf78
--- /dev/null
+++ b/src/utils/crypto.d.ts
@@ -0,0 +1,19 @@
+export function sm4en3(key: string, data: string): string;
+export function sm4de3(key: string, data: string): string;
+export function getInfoFromPKCS7(p7sign: Buffer | string): {
+    cert: {
+        subject: Array<{ name: string; value: string }>;
+        subjectDN: string;
+        issuer: Array<{ name: string; value: string }>;
+        issuerDN: string;
+        serialNumber: string;
+        notBefore: string;
+        notAfter: string;
+        pem: string;
+    } | null;
+    publicKey: string | null;
+    publicKeyHex: string | null;
+    signature: string | null;
+    signatureHex: string | null;
+};
+export function verifyPKCS7(p7sign: Buffer | string, originalData?: Buffer | string): boolean;
diff --git a/src/utils/crypto.js b/src/utils/crypto.js
new file mode 100644
index 0000000..a6456e5
--- /dev/null
+++ b/src/utils/crypto.js
@@ -0,0 +1,354 @@
+import sm4 from 'sm-crypto'
+import sm3 from 'sm-crypto'
+import sm2 from 'sm-crypto'
+import forge from 'node-forge'
+import { KJUR, ASN1HEX, X509,pemtohex } from 'jsrsasign'
+
+export function sm4en3(key, data) {
+    let sm3key = sm3(key)
+    sm3key = sm3key.substring(0, 32)
+    let encryptData = sm4.encrypt(data, sm3key)
+    return encryptData
+}
+
+export function sm4de3(key, data) {
+    let sm3key = sm3(key)
+    sm3key = sm3key.substring(0, 32)
+    let decryptData = sm4.decrypt(data, sm3key)
+    return decryptData
+}
+
+export function getInfoFromPKCS7(p7sign) {
+    let base64Data
+    if (Buffer.isBuffer(p7sign)) {
+        base64Data = p7sign.toString('base64')
+    } else if (typeof p7sign === 'string') {
+        if (p7sign.includes('-----BEGIN PKCS7-----')) {
+            base64Data = p7sign
+                .replace(/-----BEGIN PKCS7-----\n?/, '')
+                .replace(/-----END PKCS7-----\n?/, '')
+                .replace(/\n/g, '')
+        } else {
+            base64Data = p7sign
+        }
+    } else {
+        throw new Error('Invalid input type for p7sign')
+    }
+
+    try {
+        const pemData = `-----BEGIN PKCS7-----\n${base64Data}\n-----END PKCS7-----`
+        const p7 = forge.pkcs7.messageFromPem(pemData)
+        return extractInfoFromForgeP7(p7)
+    } catch (forgeError) {
+        try {
+            return extractInfoFromJsrsasignP7(base64Data)
+        } catch (jsrsasignError) {
+            throw new Error(`Failed to parse PKCS7: ${forgeError.message}, ${jsrsasignError.message}`)
+        }
+    }
+}
+
+function extractInfoFromForgeP7(p7) {
+    function attrsToDN(attrs) {
+        if (!attrs || attrs.length === 0) return ''
+        return attrs.map(attr => `${attr.name}=${attr.value}`).join(', ')
+    }
+
+    let cert = null
+    if (p7.certificates && p7.certificates.length > 0) {
+        const certObj = p7.certificates[0]
+        cert = {
+            subject: certObj.subject.attributes.map(attr => ({
+                name: attr.name,
+                value: attr.value
+            })),
+            subjectDN: attrsToDN(certObj.subject.attributes),
+            issuer: certObj.issuer.attributes.map(attr => ({
+                name: attr.name,
+                value: attr.value
+            })),
+            issuerDN: attrsToDN(certObj.issuer.attributes),
+            serialNumber: certObj.serialNumber,
+            notBefore: certObj.validity.notBefore,
+            notAfter: certObj.validity.notAfter,
+            pem: forge.pki.certificateToPem(certObj)
+        }
+    }
+
+    let publicKey = null
+    let publicKeyHex = null
+    if (p7.certificates && p7.certificates.length > 0) {
+        const certObj = p7.certificates[0]
+        if (certObj.publicKey) {
+            publicKey = forge.pki.publicKeyToPem(certObj.publicKey)
+            const publicKeyAsn1 = forge.pki.publicKeyToAsn1(certObj.publicKey)
+            const publicKeyDer = forge.asn1.toDer(publicKeyAsn1)
+            publicKeyHex = forge.util.bytesToHex(publicKeyDer.getBytes())
+        }
+    }
+
+    let signature = null
+    let signatureHex = null
+    if (p7.rawCapture && p7.rawCapture.signature) {
+        signature = forge.util.encode64(p7.rawCapture.signature)
+        signatureHex = forge.util.bytesToHex(p7.rawCapture.signature)
+    }
+
+    return {
+        cert,
+        publicKey,
+        publicKeyHex,
+        signature,
+        signatureHex
+    }
+}
+
+function extractInfoFromJsrsasignP7(base64Data) {
+    const parser = new KJUR.asn1.cms.CMSParser()
+    const p7 = parser.getCMSSignedData(ASN1HEX.b64tohex(base64Data))
+
+    let cert = null
+    let publicKey = null
+    let publicKeyHex = null
+
+    const certs = p7.certs && p7.certs.array ? p7.certs.array : []
+
+    if (certs.length > 0) {
+        const certPem = certs[0]
+
+        const x509 = new X509()
+        x509.readCertPEM(certPem)
+
+        const subjectStr = x509.getSubjectString()
+        const issuerStr = x509.getIssuerString()
+
+        function parseDNString(dnStr) {
+            if (!dnStr || dnStr === '/') return []
+            const parts = dnStr.substring(1).split('/')
+            return parts.map(part => {
+                const [name, value] = part.split('=')
+                return { name, value }
+            })
+        }
+
+        const subjectAttrs = parseDNString(subjectStr)
+        const issuerAttrs = parseDNString(issuerStr)
+
+        function attrsToDN(attrs) {
+            if (!attrs || attrs.length === 0) return ''
+            return attrs.map(attr => `${attr.name}=${attr.value}`).join(', ')
+        }
+
+        cert = {
+            subject: subjectAttrs,
+            subjectDN: attrsToDN(subjectAttrs),
+            issuer: issuerAttrs,
+            issuerDN: attrsToDN(issuerAttrs),
+            serialNumber: x509.getSerialNumberHex(),
+            notBefore: x509.getNotBefore(),
+            notAfter: x509.getNotAfter(),
+            pem: certPem
+        }
+
+        try {
+            const certHex = pemtohex(certPem)
+            const tbsCert = ASN1HEX.getTLVbyList(certHex, 0, [0])
+            const spki = ASN1HEX.getTLVbyList(tbsCert, 0, [6])
+            const publicKeyBitString = ASN1HEX.getTLVbyList(spki, 0, [1])
+            const publicKeyHexContent = publicKeyBitString.substring(6)
+
+            const algorithmSeq = ASN1HEX.getTLVbyList(spki, 0, [0])
+            const oidTlv = ASN1HEX.getTLVbyList(algorithmSeq, 0, [0])
+            const oidHex = oidTlv.substring(4)
+
+            const isSM2 = oidHex.includes('2A811CCF55') || oidHex.includes('2a811ccf55')
+
+            publicKey = KJUR.asn1.ASN1Util.getPEMStringFromHex(spki, 'PUBLIC KEY')
+            publicKeyHex = spki
+        } catch (e) {
+            console.error('提取 SM2 公钥错误:', e.message)
+            publicKey = null
+            publicKeyHex = null
+        }
+    }
+
+    let signature = null
+    let signatureHex = null
+    if (p7.sinfos && p7.sinfos.length > 0) {
+        const signer = p7.sinfos[0]
+        if (signer.sighex) {
+            signatureHex = signer.sighex
+            signature = ASN1HEX.hextob64(signer.sighex)
+        }
+    }
+
+    return {
+        cert,
+        publicKey,
+        publicKeyHex,
+        signature,
+        signatureHex
+    }
+}
+
+export function verifyPKCS7(p7sign, originalData) {
+    let base64Data
+    if (Buffer.isBuffer(p7sign)) {
+        base64Data = p7sign.toString('base64')
+    } else if (typeof p7sign === 'string') {
+        if (p7sign.includes('-----BEGIN PKCS7-----')) {
+            base64Data = p7sign
+                .replace(/-----BEGIN PKCS7-----\n?/, '')
+                .replace(/-----END PKCS7-----\n?/, '')
+                .replace(/\n/g, '')
+        } else {
+            base64Data = p7sign
+        }
+    } else {
+        throw new Error('Invalid input type for p7sign')
+    }
+
+    let verifyData
+    if (originalData) {
+        if (Buffer.isBuffer(originalData)) {
+            verifyData = originalData
+        } else if (typeof originalData === 'string') {
+            verifyData = Buffer.from(originalData)
+        } else {
+            throw new Error('Invalid input type for originalData')
+        }
+    }
+
+    try {
+        const pemData = `-----BEGIN PKCS7-----\n${base64Data}\n-----END PKCS7-----`
+        const p7 = forge.pkcs7.messageFromPem(pemData)
+
+        if (!verifyData) {
+            if (p7.content) {
+                verifyData = Buffer.from(p7.content.getBytes(), 'binary')
+            } else {
+                throw new Error('No content found in PKCS7 signature for attach mode')
+            }
+        }
+
+        if (p7.certificates && p7.certificates.length > 0) {
+            const publicKey = p7.certificates[0].publicKey
+            if (publicKey && p7.rawCapture && p7.rawCapture.signature) {
+                const md = forge.md.sha256.create()
+                md.update(verifyData.toString(), 'utf8')
+                const digest = md.digest().getBytes()
+
+                return publicKey.verify(digest, p7.rawCapture.signature)
+            }
+        }
+
+        return p7.verify()
+    } catch (forgeError) {
+        try {
+            return verifyPKCS7WithJsrsasign(base64Data, verifyData)
+        } catch (jsrsasignError) {
+            return false
+        }
+    }
+}
+
+function verifyPKCS7WithJsrsasign(base64Data, verifyData) {
+    const parser = new KJUR.asn1.cms.CMSParser()
+    const p7 = parser.getCMSSignedData(ASN1HEX.b64tohex(base64Data))
+
+    if (!verifyData) {
+        if (p7.econtent && p7.econtent.hex) {
+            verifyData = Buffer.from(p7.econtent.hex, 'hex')
+        } else {
+            throw new Error('No content found in PKCS7 signature for attach mode')
+        }
+    }
+
+    if (!p7.sinfos || p7.sinfos.length === 0) {
+        throw new Error('No signer info found in PKCS7')
+    }
+
+    const signer = p7.sinfos[0]
+
+    if (!p7.certs || !p7.certs.array || p7.certs.array.length === 0) {
+        throw new Error('No certificate found in PKCS7')
+    }
+
+    const certPem = p7.certs.array[0]
+    const x509 = new X509()
+    x509.readCertPEM(certPem)
+
+    const sigAlg = signer.sigalg
+
+    if (sigAlg === '1.2.156.10197.1.301.1' || sigAlg === '1.2.156.10197.1.501' || sigAlg.includes('sm2')) {
+        const certHex = pemtohex(certPem)
+        const tbsCert = ASN1HEX.getTLVbyList(certHex, 0, [0])
+        const spki = ASN1HEX.getTLVbyList(tbsCert, 0, [6])
+        const publicKeyBitString = ASN1HEX.getTLVbyList(spki, 0, [1])
+        let publicKeyHex = publicKeyBitString.substring(6)
+
+        if (!publicKeyHex.startsWith('04')) {
+            publicKeyHex = '04' + publicKeyHex
+        }
+
+        const hash = sm3(verifyData.toString())
+        let signatureHex = signer.sighex
+        const userId = '1234567812345678'
+
+        try {
+            const result1 = sm2.doVerifySignature(verifyData.toString(), signatureHex, publicKeyHex, { der: true, hash: true, userId })
+            if (result1) return true
+
+            const result2 = sm2.doVerifySignature(verifyData.toString(), signatureHex, publicKeyHex, { der: true, hash: true })
+            if (result2) return true
+
+            const result3 = sm2.doVerifySignature(verifyData.toString(), signatureHex, publicKeyHex, { der: true })
+            if (result3) return true
+
+            const result4 = sm2.doVerifySignature(hash, signatureHex, publicKeyHex, { der: true, hash: true, userId })
+            if (result4) return true
+
+            const result5 = sm2.doVerifySignature(hash, signatureHex, publicKeyHex, { der: true, hash: true })
+            if (result5) return true
+
+            const result6 = sm2.doVerifySignature(hash, signatureHex, publicKeyHex, { der: true })
+            if (result6) return true
+
+            const result7 = sm2.doVerifySignature(verifyData.toString(), signatureHex, publicKeyHex)
+            if (result7) return true
+
+            const result8 = sm2.doVerifySignature(verifyData.toString(), signatureHex, publicKeyHex, { hash: true, userId })
+            if (result8) return true
+
+            if (signatureHex.startsWith('30')) {
+                try {
+                    const rStart = 8
+                    const r = signatureHex.substring(rStart, rStart + 64)
+                    const sStart = rStart + 64 + 4
+                    const s = signatureHex.substring(sStart, sStart + 64)
+                    const rawSignature = r + s
+
+                    const result9 = sm2.doVerifySignature(verifyData.toString(), rawSignature, publicKeyHex)
+                    if (result9) return true
+
+                    const result10 = sm2.doVerifySignature(verifyData.toString(), rawSignature, publicKeyHex, { hash: true, userId })
+                    if (result10) return true
+                } catch (e) {
+                }
+            }
+        } catch (e) {
+        }
+
+        return false
+    } else {
+        try {
+            const pubKey = x509.getPublicKey()
+            const sig = new KJUR.crypto.Signature({ alg: 'SHA256withRSA' })
+            sig.init(pubKey)
+            sig.updateString(verifyData.toString())
+            return sig.verify(signer.sighex)
+        } catch (e) {
+            throw new Error('RSA verification failed: ' + e.message)
+        }
+    }
+}
diff --git a/src/version.js b/src/version.js
index d800d2e..326ef56 100644
--- a/src/version.js
+++ b/src/version.js
@@ -1 +1 @@
-export const VERSION = "V1.0-20260424025112";
\ No newline at end of file
+export const VERSION = "V1.0-20260426034359";
\ No newline at end of file