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aws/lambda-nodejs18.x/UpdateZulipStreams/node_modules/aws-sdk/lib/browserCryptoLib.js

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+var Hmac = require('./browserHmac');
+var Md5 = require('./browserMd5');
+var Sha1 = require('./browserSha1');
+var Sha256 = require('./browserSha256');
+
+/**
+ * @api private
+ */
+module.exports = exports = {
+    createHash: function createHash(alg) {
+      alg = alg.toLowerCase();
+      if (alg === 'md5') {
+        return new Md5();
+      } else if (alg === 'sha256') {
+        return new Sha256();
+      } else if (alg === 'sha1') {
+        return new Sha1();
+      }
+
+      throw new Error('Hash algorithm ' + alg + ' is not supported in the browser SDK');
+    },
+    createHmac: function createHmac(alg, key) {
+      alg = alg.toLowerCase();
+      if (alg === 'md5') {
+        return new Hmac(Md5, key);
+      } else if (alg === 'sha256') {
+        return new Hmac(Sha256, key);
+      } else if (alg === 'sha1') {
+        return new Hmac(Sha1, key);
+      }
+
+      throw new Error('HMAC algorithm ' + alg + ' is not supported in the browser SDK');
+    },
+    createSign: function() {
+      throw new Error('createSign is not implemented in the browser');
+    }
+  };