4.0.2

sop-sdk/sdk-nodejs/common/SignUtil.js

@@ -0,0 +1,88 @@
+const {KJUR, hextob64} = require('jsrsasign')
+
+const HashMap = {
+    SHA256withRSA: 'SHA256withRSA',
+    SHA1withRSA: 'SHA1withRSA'
+}
+
+const PEM_BEGIN = '-----BEGIN PRIVATE KEY-----\n'
+const PEM_END = '\n-----END PRIVATE KEY-----'
+
+/**
+ * rsa签名参考：https://www.jianshu.com/p/145eab95322c
+ */
+exports.SignUtil = {
+    /**
+     * 创建签名
+     * @param params 请求参数
+     * @param privateKey 私钥，PKCS8
+     * @param signType 签名类型，RSA,RSA2
+     * @returns 返回签名内容
+     */
+    createSign(params, privateKey, signType) {
+        const content = this.getSignContent(params)
+        return this.sign(content, privateKey, signType)
+    },
+    sign: function (content, privateKey, signType) {
+        if (signType.toUpperCase() === 'RSA') {
+            return this.rsaSign(content, privateKey, HashMap.SHA1withRSA)
+        } else if (signType.toUpperCase() === 'RSA2') {
+            return this.rsaSign(content, privateKey, HashMap.SHA256withRSA)
+        } else {
+            throw 'signType错误'
+        }
+    },
+    /**
+     * rsa签名
+     * @param content 签名内容
+     * @param privateKey 私钥
+     * @param hash hash算法，SHA256withRSA，SHA1withRSA
+     * @returns 返回签名字符串，base64
+     */
+    rsaSign: function (content, privateKey, hash) {
+        privateKey = this._formatKey(privateKey)
+        // 创建 Signature 对象
+        const signature = new KJUR.crypto.Signature({
+            alg: hash,
+            //!这里指定 私钥 pem!
+            prvkeypem: privateKey
+        })
+        signature.updateString(content)
+        const signData = signature.sign()
+        // 将内容转成base64
+        return hextob64(signData)
+    },
+    _formatKey: function (key) {
+        if (!key.startsWith(PEM_BEGIN)) {
+            key = PEM_BEGIN + key
+        }
+        if (!key.endsWith(PEM_END)) {
+            key = key + PEM_END
+        }
+        return key
+    },
+    /**
+     * 获取签名内容
+     * @param params 请求参数
+     * @returns {string}
+     */
+    getSignContent: function (params) {
+        const paramNames = []
+        for(const key in params) {
+            paramNames.push(key)
+        }
+
+        paramNames.sort()
+
+        const paramNameValue = []
+
+        for (let i = 0, len = paramNames.length; i < len; i++) {
+            const paramName = paramNames[i];
+            const val = params[paramName];
+            if (paramName && val) {
+                paramNameValue.push(`${paramName}=${val}`)
+            }
+        }
+        return paramNameValue.join('&')
+    }
+}