HamcSHA224 encryption error

[hujuny]

When I used HamcSHA224, I found that the results of encrypted and online encrypted websites were different. I found many encrypted websites to compare, and they were all the same.
crypto: ^2.1.4

Digest hamcEncryption({@required String key,@required String content, @required Hash hash}) { var bytes = utf8.encode(content); var keyString=utf8.encode(key); var hmac = Hmac(hash, keyString); var digest = hmac.convert(bytes); return digest; }
print("${hamcEncryption(key: "1234", content: "foo", hash: sha224)}");

[natebosch]

It works for me:

import 'dart:convert';

import 'package:crypto/crypto.dart' show Hmac, sha224;

void main() {
  var key = utf8.encode('some key');
  var content = utf8.encode('some content');
  print('Key: ${base64.encode(key)}');
  print('Content: ${base64.encode(content)}');
  var hmac= Hmac(sha224,key);
  var result = hmac.convert(content);
  print(result);
}

Prints:

Key: c29tZSBrZXk=
Content: c29tZSBjb250ZW50
6a9fd425734f37c5045a27ea9533b02dec9d93358b52d23b262f7695

When I plug those base64 encoded values into https://www.liavaag.org/English/SHA-Generator/HMAC/ I get

6a9fd425734f37c5045a27ea9533b02dec9d93358b52d23b262f7695

[natebosch]

If I downgrade to 2.1.4 and adapt your example I also see a result that agrees with https://www.liavaag.org/English/SHA-Generator/HMAC/

import 'dart:convert';

import 'package:crypto/crypto.dart' show Hmac, sha224, Digest, Hash;

Digest hamcEncryption({String key, String content, Hash hash}) {
  var bytes = utf8.encode(content);
  var keyString = utf8.encode(key);
  var hmac = Hmac(hash, keyString);
  var digest = hmac.convert(bytes);
  return digest;
}

void main() {
  print(base64.encode(utf8.encode('1234')));
  print(base64.encode(utf8.encode('foo')));
  print("${hamcEncryption(key: "1234", content: "foo", hash: sha224)}");
}

prints

MTIzNA==
Zm9v
7bc4fa1501e9864400fe802b89fe71edda20104fa354232fce2d173f

Plugging those base64 values into the site results in the same digest as this library. Perhaps you did not input the same data in your tests.

[hujuny]

这个对我有用：

导入 “飞镖：转换”；

导入 'package:crypto/crypto.dart' 显示Hmac，sha224；

void  main () {
   var key = utf8. 编码（'一些密钥'）；
  var内容= utf8。编码（'一些内容'）；
  打印（'键：$ { BASE64。编码（钥匙）} '）;
  打印（'内容：${ base64。编码（内容）} '）；
  var hmac =  Hmac (sha224,key);
  无功结果= hmac。转换（内容）；
  打印（结果）；
}

印刷：

[hujuny]

Thank you for your reply and wish you a happy work.

…

------------------ 原始邮件 ------------------ 发件人: "dart-lang/crypto" ***@***.***>; 发送时间: 2021年8月27日(星期五) 上午9:13 ***@***.***>; ***@***.******@***.***>; 主题: Re: [dart-lang/crypto] HamcSHA224 encryption error (#121) If I downgrade to 2.1.4 and adapt your example I also see a result that agrees with https://www.liavaag.org/English/SHA-Generator/HMAC/ import 'dart:convert'; import 'package:crypto/crypto.dart' show Hmac, sha224, Digest, Hash; Digest hamcEncryption({String key, String content, Hash hash}) { var bytes = utf8.encode(content); var keyString = utf8.encode(key); var hmac = Hmac(hash, keyString); var digest = hmac.convert(bytes); return digest; } void main() { print(base64.encode(utf8.encode('1234'))); print(base64.encode(utf8.encode('foo'))); print("${hamcEncryption(key: "1234", content: "foo", hash: sha224)}"); } prints MTIzNA== Zm9v 7bc4fa1501e9864400fe802b89fe71edda20104fa354232fce2d173f Plugging those base64 values into the site results in the same digest as this library. Perhaps you did not input the same data in your tests. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe. Triage notifications on the go with GitHub Mobile for iOS or Android.