## RSA数据解密 > 方法：**yunj.rsaDecrypt(encrypted, privateKey)** | 参数 | 类型 | 必须 | 说明 | | --- | --- | --- | --- | | `encrypted` | string | 是 | 密文 | | `privateKey` | string | 是 | RSA私钥 | 返回值：`Promise<string>` > 示例： ```javascript layui.use(['yunj'],function (){ let encrypted = "FWHx+J7vrgR1DfqPjDZtEudrp9au/SgmqKCjJZERj7bVdjsVMbRwDn8lYFDTIqeiFlDaDoLvSQXjmpp/QkTLGsG5BmxQjgghauXmNnuWlZkbs5AMiyx1jFA4vbRlCT3k6272MtzGqDXP9U3hyd6iFkC2JnIF/GNiBZk1mDZVpcHLtUttEcdTQrYWOBBu1b/8O2AilTDNauWxvb7C4DHyUdxJ9VpVBUBlIQoYQK/N+SMQbvF2GNHofDUFGMujYOTmMOxsIr16dYppAjzAV/n9tYm3QqBvtfsCyZHohjruhfhBTow9KEVLUk6ZLbZgTY2e7QigxkRfnrrHLnzJ/UJBkQ=="; let privateKey= "***********************"; yunj.rsaDecrypt(encrypted,privateKey).then(decrypted=>{ console.log(decrypted); // 输出：123 }) }); ```