Could you please support AES256/CBC/PKCS7Padding?

HI

This is a good Project.

and
Is this Project Support AES256/CBC/PKCS7Padding ???
or something can reference ??

Thanks

Thanx for your issue.
Im going to add some algorithms in few weeks.
I have a lot of plan ,but Im too lazy. sorry.

Hi ,man:
i wasn’t lazy today. i made the repo -> https://github.com/BruceWind/CryptoPPInNDK.

some algoritms will soon.

Hi my Hero,

Many Many Many Many Many Thanks, I Very Need AES256/CBC/PKCS7Padding with C, In all the Github, I can't find any repo

Thanks you again

you are welcome!
Im busy this week, i hava a lot of work.Maybe you can to use the repo, and add some algorithms.
write some code to test, then build a so file, and push to device.

Then you can add you code to this repo,build with jni.

There is a great article, C++使用AES+Base64算法对文本进行加密,but the algoritm is AES128,isnt 256。

Hi,

Thanks for your helping.
My Business Model is using AES256/CBC/PKCS7Padding,
And I must use kotlin-native platform to build my project,
it only support c (don't support c++),
so I am so sad to find no suitable project (I don't understand c/c++ )

Thanks You VERY VERY VERY Much

I think, no kotlin-native in Android. Only "Java call native" in Android. Java can call native interface,regardless C , C++ or Assembly language.
Do you know I mean?

I mean you can use extern "C" to call you C++ code. like this calling-c-dll-from-java.

Hi,

Thanks for your helping.
My present situation : already create base64/sha/hmac using cinterop in kotlin-native project, now aes256 dosen't implement, but no suitable AES256/CBC/PKCS7Padding using c to reference.

Thanks You very much

okay,
this week, i dont have a lot of work, maybe the repo will go ahead a little.

Hi,
It's a Good news for me.
Thanks for your helping.

My Test Data is:
val data = "Discover interesting projects and people to populate your personal news feed"
val key = "XENT95ZAYCPH2CLFT7M2Y3WEWKB846B8"
val iv = "B3LCLM7CMXLY3ZAF"

The resule is:
JapXrfLPtd5bAkc69VtkeNlUeE/pgYdszgSQoqrDZEmg3GkA6wYx9+JaAtzNRg2ConKHmHtG/gCtNwpyO62OO+Jj+HnsxQwtvm8qkP2hpRI=

You are really my HERO

Thanks you very much

I think, maybe you are finding a wrong direction.

Java only provides PKCS#5 padding, but it is the same as PKCS#7 padding. See this question on Crypto.SE:

What is the difference between PKCS#5 padding and PKCS#7 padding

They are interchangeable for the common block ciphers like AES and DES.
And such as AES&DES algorithm in cnblogs.

Then, I wrote a class to test.

import android.util.Base64;

import java.security.spec.AlgorithmParameterSpec;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

public class AESTest
{

    private static String KEY_AES = "D(G+KbPeShVmYq3t";
    public static String encrypt7(String value) {
        try {
            byte[] key = KEY_AES.getBytes("UTF-8");
            byte[] ivs = KEY_AES.getBytes("UTF-8");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
            SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
            AlgorithmParameterSpec paramSpec = new IvParameterSpec(ivs);
            cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, paramSpec);
            return Base64.encodeToString(cipher.doFinal(value.getBytes("UTF-8")), Base64.DEFAULT);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static String encrypt5(String value) {
        try {
            byte[] key = KEY_AES.getBytes("UTF-8");
            byte[] ivs = KEY_AES.getBytes("UTF-8");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
            AlgorithmParameterSpec paramSpec = new IvParameterSpec(ivs);
            cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, paramSpec);
            return Base64.encodeToString(cipher.doFinal(value.getBytes("UTF-8")), Base64.DEFAULT);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}

The result of two function is equal.

Look this: struct padding in crypto++ doc. I think, Crypto++ doesn't support PKCS7Padding.

Hi,
Thanks for your helping.
I don't understand about C language, so if c only support pkcs5, it is ok.

My test data is use java ＆ C#, my coworker seem also use pkcs5 by java.

You are truly my savior.
I Really need C Code.

Thanks for your helping.

Obviously,length of Discover interesting projects an is 32, 32 same to 16 * 2.
Perhaps, "length" and some loop have mistakes.

If you ask about your aes algorithm, this isn't a question and answer platform.Pls go to Stackoverflow. Im Sorry.

sorry, AES no longer support,
I have pushed code that use chacah20 instead of AES. #40

There is a great article, C++使用AES+Base64算法对文本进行加密,but the algoritm is AES128,isnt 256。

Thanks to mr. BruceWind!!! He saved my life with this article referral!!!

@PeterleSoftwares

@PeterleSoftwares
You are welcome. Very appreciate that it helped you.

Navigation Menu

Repository navigation

Could you please support AES256/CBC/PKCS7Padding? #33

Metadata

Assignees

Labels

Projects

Milestone

Relationships

Development

Could you please support AES256/CBC/PKCS7Padding? #33

Description

Activity

BruceWind commented on Aug 28, 2019

BruceWind commented on Aug 28, 2019

VincentChen1212 commented on Aug 29, 2019

BruceWind commented on Aug 29, 2019

BruceWind commented on Aug 29, 2019

VincentChen1212 commented on Aug 30, 2019

BruceWind commented on Aug 30, 2019

BruceWind commented on Aug 30, 2019

VincentChen1212 commented on Sep 2, 2019

BruceWind commented on Sep 2, 2019

VincentChen1212 commented on Sep 3, 2019

BruceWind commented on Sep 3, 2019

VincentChen1212 commented on Sep 3, 2019

VincentChen1212 commented on Sep 4, 2019

BruceWind commented on Sep 5, 2019

BruceWind commented on Feb 24, 2021

PeterleSoftwares commented on Aug 9, 2021

BruceWind commented on Aug 10, 2021

Metadata

Metadata

Assignees

Labels

Projects

Milestone

Relationships

Development

Issue actions