[dart-misc] In dart how to decrypt of the encrypted value?

[Niyazi Toros]

I am testing the Cryptographic hashing functions for Dart. I can't find
any information about DECRYPTION?

Can anyone show me how to decryption of the encrypted value?


And this is example;


import 'dart:convert';
import 'package:crypto/crypto.dart';

void main() async {
var key = utf8.encode('***@ssw0rd');
var bytes = utf8.encode("Dart and Aqueduct makes my life easier. Thank
you.");


// TODO: ENCRYPTION
var hmacSha256 = new Hmac(sha256, key); // HMAC-SHA256
var digest = hmacSha256.convert(bytes);

print(“————ENCRYPTION—————“);
print("HMAC digest as bytes: ${digest.bytes}");
print("HMAC digest as hex string: $digest");
print('\r\n');




// TODO: DECRYPTION

????????????
print(“————DECRYPTION—————“);
print(?????????);

}

[Istvan Soos]

Hi Niyazi,

HMAC is not an encryption format that you can encrypt and decrypt, it
is a one-way hash function that can be used to check the integrity of
a message. You can only calculate the hash of a given message, but not
decrypt the message from the hash.

The wikipedia page explains it in more detail than I possibly can:
https://en.wikipedia.org/wiki/HMAC

package:crypto deals with hashes, it does not cover other types of cryptography.

Cheers,
Istvan

I am testing the Cryptographic hashing functions for Dart. I can't find any
information about DECRYPTION?
Can anyone show me how to decryption of the encrypted value?
And this is example;
import 'dart:convert';
import 'package:crypto/crypto.dart';
void main() async {
var bytes = utf8.encode("Dart and Aqueduct makes my life easier. Thank
you.");
// TODO: ENCRYPTION
var hmacSha256 = new Hmac(sha256, key); // HMAC-SHA256
var digest = hmacSha256.convert(bytes);
print(“————ENCRYPTION—————“);
print("HMAC digest as bytes: ${digest.bytes}");
print("HMAC digest as hex string: $digest");
print('\r\n');
// TODO: DECRYPTION
????????????
print(“————DECRYPTION—————“);
print(?????????);
}
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[Niyazi Toros]

Thanks Istvan, there is a Chiper plugin but its to old and dint pass any
documentation. I am looking something that encrypt string and than decrypt.
In C# I do similar project but I am trying to find same in Dart.