test: refactor test-crypto-cipheriv-decipheriv

Make change in test file from var to const/let. PR-URL: #10018 Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>

Author: Aileen

test/parallel/test-crypto-cipheriv-decipheriv.js

@@ -1,25 +1,25 @@
 'use strict';
-varcommon=require('../common');
-varassert=require('assert');
+constcommon=require('../common');
+constassert=require('assert');
 
 if(!common.hasCrypto){
 common.skip('missing crypto');
 return;
 }
-varcrypto=require('crypto');
+constcrypto=require('crypto');
 
 functiontestCipher1(key,iv){
 // Test encyrption and decryption with explicit key and iv
-varplaintext=
-'32|RmVZZkFUVmpRRkp0TmJaUm56ZU9qcnJkaXNNWVNpTTU*|iXmckfRWZBGWWELw'+
-'eCBsThSsfUHLeRe0KCsK8ooHgxie0zOINpXxfZi/oNG7uq9JWFVCk70gfzQH8ZUJ'+
-'jAfaFg**';
-varcipher=crypto.createCipheriv('des-ede3-cbc',key,iv);
-varciph=cipher.update(plaintext,'utf8','hex');
+constplaintext=
+'32|RmVZZkFUVmpRRkp0TmJaUm56ZU9qcnJkaXNNWVNpTTU*|iXmckfRWZBGWWELw'+
+'eCBsThSsfUHLeRe0KCsK8ooHgxie0zOINpXxfZi/oNG7uq9JWFVCk70gfzQH8ZUJ'+
+'jAfaFg**';
+constcipher=crypto.createCipheriv('des-ede3-cbc',key,iv);
+letciph=cipher.update(plaintext,'utf8','hex');
 ciph+=cipher.final('hex');
 
-vardecipher=crypto.createDecipheriv('des-ede3-cbc',key,iv);
-vartxt=decipher.update(ciph,'hex','utf8');
+constdecipher=crypto.createDecipheriv('des-ede3-cbc',key,iv);
+lettxt=decipher.update(ciph,'hex','utf8');
 txt+=decipher.final('utf8');
 
 assert.strictEqual(txt,plaintext,'encryption/decryption with key and iv');
@@ -28,11 +28,11 @@ function testCipher1(key, iv){
 // NB: In real life, it's not guaranteed that you can get all of it
 // in a single read() like this. But in this case, we know it's
 // quite small, so there's no harm.
-varcStream=crypto.createCipheriv('des-ede3-cbc',key,iv);
+constcStream=crypto.createCipheriv('des-ede3-cbc',key,iv);
 cStream.end(plaintext);
 ciph=cStream.read();
 
-vardStream=crypto.createDecipheriv('des-ede3-cbc',key,iv);
+constdStream=crypto.createDecipheriv('des-ede3-cbc',key,iv);
 dStream.end(ciph);
 txt=dStream.read().toString('utf8');
 
@@ -42,16 +42,16 @@ function testCipher1(key, iv){
 
 functiontestCipher2(key,iv){
 // Test encyrption and decryption with explicit key and iv
-varplaintext=
-'32|RmVZZkFUVmpRRkp0TmJaUm56ZU9qcnJkaXNNWVNpTTU*|iXmckfRWZBGWWELw'+
-'eCBsThSsfUHLeRe0KCsK8ooHgxie0zOINpXxfZi/oNG7uq9JWFVCk70gfzQH8ZUJ'+
-'jAfaFg**';
-varcipher=crypto.createCipheriv('des-ede3-cbc',key,iv);
-varciph=cipher.update(plaintext,'utf8','buffer');
+constplaintext=
+'32|RmVZZkFUVmpRRkp0TmJaUm56ZU9qcnJkaXNNWVNpTTU*|iXmckfRWZBGWWELw'+
+'eCBsThSsfUHLeRe0KCsK8ooHgxie0zOINpXxfZi/oNG7uq9JWFVCk70gfzQH8ZUJ'+
+'jAfaFg**';
+constcipher=crypto.createCipheriv('des-ede3-cbc',key,iv);
+letciph=cipher.update(plaintext,'utf8','buffer');
 ciph=Buffer.concat([ciph,cipher.final('buffer')]);
 
-vardecipher=crypto.createDecipheriv('des-ede3-cbc',key,iv);
-vartxt=decipher.update(ciph,'buffer','utf8');
+constdecipher=crypto.createDecipheriv('des-ede3-cbc',key,iv);
+lettxt=decipher.update(ciph,'buffer','utf8');
 txt+=decipher.final('utf8');
 
 assert.strictEqual(txt,plaintext,'encryption/decryption with key and iv');