Recent questions tagged Encryption

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encryption - Java MessageDigest class in C#

I require a certain piece of encryption logic done in Java to be converted to C# What would be the C# ... , Digest and reset functions ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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encryption - How can I encrypt/decrypt 12-digit decimal numbers to other ones, using a password and Java?

I have already read Using Java to encrypt integers and Encrypting with DES Using a Pass Phrase. All I need is ... going to be weak/attackable? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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encryption - AES-128 CBC decryption in Python

I'm trying to implement this code in python (I'm new to python) and it gives me the following error: ... do to make this code work? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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550 views

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encryption - Node.js and crypto library

I'm having weird issues with Node's crypto library. I wrote this simple AES testing script: var cipher = ... "123|123123123123123" doesn't? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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692 views

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encryption - Node.js and crypto library

I'm having weird issues with Node's crypto library. I wrote this simple AES testing script: var cipher = ... "123|123123123123123" doesn't? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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521 views

1 answer

encryption - Node.js and crypto library

I'm having weird issues with Node's crypto library. I wrote this simple AES testing script: var cipher = ... "123|123123123123123" doesn't? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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660 views

1 answer

encryption - How can I encrypt/decrypt 12-digit decimal numbers to other ones, using a password and Java?

I have already read Using Java to encrypt integers and Encrypting with DES Using a Pass Phrase. All I need is ... going to be weak/attackable? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

encryption - AES-128 CBC decryption in Python

I'm trying to implement this code in python (I'm new to python) and it gives me the following error: ... do to make this code work? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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513 views

1 answer

encryption - Node.js and crypto library

I'm having weird issues with Node's crypto library. I wrote this simple AES testing script: var cipher = ... "123|123123123123123" doesn't? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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14.8k views

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encryption - How to factor RSA modulus given the public and private exponent?

I have a RSA private key with modulus m, public exponent e and private exponent d, but the program I am using needs ... and d to get p and q? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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460 views

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encryption - Storing encrypted passwords

My coworker and I are having a fist-fight civilized discussion over password security. Please help us ... that implemented this practice? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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979 views

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encryption - AES encrypt with openssl decrypt using java

I have to encrypt an xml file using openssl command line or a C api. The output shall be Base64. A java ... decrypted using the given java code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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661 views

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encryption - Error after Fingerprint touched on Samsung phones: android.security.KeyStoreException: Key user not authenticated

My app uses Android 6.0 Fingerprint API to protect AES key in the Android KeyStore. The stored key can be ... in OnePlus and Acer phones. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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445 views

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encryption - Why does changing one bit in a Triple DES key or initial value not give different encrypted data?

I'm using pyDes to encrypt some data. I wanted to demonstrate that if you change even one bit in the key ... in the example. Thanks Chris! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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475 views

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encryption - Difference between BigInteger.probablePrime() and other primality algorithms in java

I am implementing an RSA encryption program using Java. Right now I am using BigInteger.probablePrime(1024, rnd) ... Lucas-Lehmer? Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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508 views

1 answer

encryption - JavaScript: Writing to download stream

I want to download an encrypted file from my server, decrypt it and save it locally. I want to decrypt the ... or several gigabytes in memory. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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584 views

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encryption - Is it necessary to encrypt chat messages before storing it into firebase?

As far as I know, Firebase sends data over an HTTPS connection, so that the data is already being encrypted. ... to something else? Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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629 views

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encryption - How to encrypt and salt the password using BouncyCastle API in Java?

I am fairly new to cryptography and I am using BouncyCasetle API to encrypt password and store it in the ... Any help would be appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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843 views

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encryption - Slow AES decryption in Android

I tried to decrypt a 4.2 MB .dcf file using AES 128 bit key, but it took 33 seconds to decrypt (on ... Time "+ String.valueOf(end-start)); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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771 views

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encryption - Decode a PHP encoded with 'zend guard'

We have a website maintained by an old employee and it appears it's encoded by Zend Guard including all backups. ... I decode our files back? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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856 views

1 answer

encryption - How do I replace deprecated crypto.createCipher in Node.js?

I am using following functions to encrypt/decrypt strings in Node.js: var crypto = require('crypto'); var ... to upgrade my source code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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441 views

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encryption - C# Encrypt an XML File

I need two methods one to encrypt and one to decrypt an xml file with a key= "hello world",the key hello ... machine it says bad data phewf! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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474 views

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encryption - Ideas to create a small (<10 digits), not (very) secure "hash"

I'm working on an online event ticketing system, where users will be able to self print his tickets and show up ... pointers on how to do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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604 views

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encryption - iPhone: How to create a SecKeyRef from a public key file (PEM)

In order to send and receive encrypted messages from/to the iPhone I need to read a public key (server's ... doing something wrong... thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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398 views

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encryption - Obscure / encrypt an order number as another number: symmetrical, "random" appearance?

Client has an simple increasing order number (1, 2, 3...). He wants end-users to receive an 8- or 9- digit ... this in a couple lines of code." See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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481 views

1 answer

encryption - Java - Encrypt String with existing public key file

I've been researching this for the past 4-5 hours now and can't seem to find an answer that actually works ... ) Any help would be awesome! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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445 views

1 answer

encryption - Why is XOR used in cryptography?

Why is only XOR used in cryptographic algorithms, and other logic gates like OR, AND, and NOR are not used? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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431 views

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encryption - What are the differences between .pem, .cer and .der?

What are the differences between .pem, .cer and .der? As far as I know, .cer contains public key. Are there ... my data using this public key? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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