pointycastle is a Dart package for common cryptographic operations. Most of the classes are ports of Bouncy Castle from Java to Dart.
Questions tagged [pointycastle]
27 questions
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1 answer
AES CBC encryption with PKCS7 padding in Dart (Flutter): pkcs7.dart throws an error when the encrypted text does not require padding
I am trying to encrypt some text with AES CBC encryption with PKCS7 padding in Python and then decrypt it in Dart (Flutter). It turns out package:pointycastle/paddings/pkcs7.dart throws an error when the encrypted text does not require padding.
Here…
Sergii
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"AES engine not initialised" with pointycastle SecureRandom()
I want to generate a random BigInt with dynamik length Bits. I am using the pointycastle package to get a SecureRandom BigInt.
import 'package:pointycastle/pointycastle.dart';
void main(List arguments) {
print(gen(500));
}
BigInt gen(int…
MindStudio
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Dart Encryption of RSA private key
I'm writing a little library using the dart pointycastle library (based on the java bouncycastle).
The libraries don't include any methods for writing a private key to disk.
So I need to write the key to disk after first encrypting it with a pass…
Brett Sutton
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Dart correct padding for AES Key
I'm building a simple encryption tool in dart.
I need to encrypt my rsa private key with a pass phrase.
I'm using AES to do the encryption.
AES requires keys to be a specific no. of bits.
In my case 256 bits.
I'm requiring that the user enter a…
Brett Sutton
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1 answer
Dart: PointyCastle compute asynchronous
currently I'm trying to send credential Data to my Backend, therefore I want to hash the password for security purposes.
But when I use the method PassCrypt().hashPass("", passwd, 48), the complete App freezes for nearly 1-2 seconds. Is there a way…
Dominik Schumann
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Dart - secret key generation method
I am looking for a dart package in order to implement key exchange protocol (Elliptic-curve Diffie–Hellman) in a Flutter application.
app generates a key pair during login and sends the public key to server (so a new key pair is generated for…
AndyDing
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Obtain hex string from the ECPrivateKey and ECPublicKey objects
I'm trying to use pointy castle to generate a public and private keypair using the secp256k1 curve. I think i have successfully created an AsymmetricKeyPair composed of an ECPrivateKey and ECPublicKey but i can't obtain their corresponding hex…
MadTyrael
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PKCS1 encryption in Flutter won't work without reflection
I'm writing some code to encrypt data from a flutter client and send it to our servers. We are using PKCS1 padded RSA but i get the error below when attempting to encrypt the data.
I/flutter (12394): Bad state: Reflectable has not been…
Duncan Hoggan
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Get fingerprint of certificate with pointycastle
I'm using pointycastle to generate a new RSA-Key for asymmetric encryption of data. To identify the key I want the fingerprint/hash of that key. How do I get it?
Here is my code to generate the RSA key (feel free to give me feedback when I do…
rekire
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How to use sha256 with rsa oaep in flutter
This is from flutter. I wanted to add sha256 hashing with the rsa-oaep,
how to do that.
In the official doc of pointy castle, they didnt mention anything like that.
Any suggestions?
final encryptor = OAEPEncoding(RSAEngine())
..init(true,…
ayato
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1 answer
Flutter how to use AES GCM 256 algorithm to cipher and decrypt using pointycastle package
I have two functions witch cipher and decrypt data with AES-GCM algorithm but using cryptography package. I don't think its bad, it helped me a lot, but I want to translate them so I can use pointycastle package for all my different encryption and…
Antonycx
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string encryption with Keccak256 in app Flutter
we are making an app to make transactions in the polygon BlockChain.
We need to encrypt a String with Kecca256 encryption, which is what Poligon receives.
Could someone help me how to encrypt a String with that Protocol
William Andres
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