Recent questions tagged Encryption

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encryption - How do you test a public/private DSA keypair?

Is there an easy way to verify that a given private key matches a given public key? I have a few *.puband a few ... a one-liner of some sort... 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 - java caesar cipher code

i did caesar cipher code by java it runs but doesnt encrypt anything after user enter the key ! here is my code ... The Key: 2 The Cipher Text 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 necessary is it to Encrypt database password field

I heard that for security issues it is advised to keep the password field encrypted in the database. In ... reason behind telling 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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encryption - How to parse(Convert to RSAParameters) X.509 private key in C#?

I'm working on an encryption channel to encrypt the communication between two devices. So I'm creating a helper ... js Thanks in advance. <3 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 - Decrypting salted AES file generated on command line with Ruby

I would like to decrypt a text file within a ruby 2.1 script which was previously encrypted using OpenSSL's ... would be highly 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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encryption - C# Decrypt bytes from SQL Server EncryptByPassPhrase?

Following Replicate T-SQL DecryptByPassPhrase in C#, I am unable to get a simple encryption with MSSQL to descrypt ... code look like? 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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encryption - AES encrypt in Node.js Decrypt in PHP. Fail.

In node.js, I use the build in function to encrypt data like that: var text = "Yes"; var password = " ... is because nodejs doesn't require $iv? 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 - C# AES: Encrypt a file causes "Length of the data to encrypt is invalid." error

I have a PDF File. When I want to encrypt it using codes below the Length of the data to encrypt is ... Any ideas what's happening here? 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 - Android KeyStoreException Unknown Error

I am trying to decrypt encrypted text after the user is authenticated by the Android M Fingerprint API. I have ... another one of my questions. 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 you protect/encrypt your Java classes?

Some time ago, in my work I needed to protect some classes against other people to read the code. For that ... hardcoded). Thanks in advance. See Question&Answers more detail:os...

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

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447 views

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encryption - encrypting a .Net application and assemblies

I have an encryption/copy protection question. I'm writing an application for a company that uses a dongle. Please ... felt (I hope). 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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encryption - Encrypt/decrypt with XOR in PHP

I am studying encryption. And I got a problem like this: After I XOR plaintext with a key, I get a crypt, " ... I got trouble in my real 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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encryption - AES acceleration for Java

I want to encrypt/decrypt lots of small (2-10kB) pieces of data. The performance is ok for now: On ... no big difference.) Other possiblilities? 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 - Bouncy Castle vs Java default RSA with OAEP

Can someone explain to me why this code throws javax.crypto.BadPaddingException: Decryption error on the final line ... what the difference is. 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 - Encrypting passwords in WinForms app.config, .NET

I want to store a password in a config file but i would like it to be encrypted so that in the app it ... not whole config, or whole section. See Question&Answers more detail:os...

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

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517 views

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encryption - Is it better to encrypt a message and then compress it or the other way around? Which provides more security?

I have the assumption there is no added protection at all. 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 - Java Bouncy Castle Cryptography - Encrypt with AES

How do I implement AES encryption with the java bouncy castle library? Example code or a link to example code would be nice :) 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 - Why do we use the "salt" to secure our passwords?

i was reading this tutorial, and i encountered the following discussion about encryption. At the end there's written ... separated with --.) See Question&Answers more detail:os...

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

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648 views

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encryption - Encrypting with RSA private key in Java

I'm trying to encrypt some content with an RSA private key. I'm following this example: http://www.junkheap. ... on the invalid key spec error? 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 to encrypt a specific column in a MySQL table?

I am experimenting with creating a simple message system (PHP) page that uses a MySQL table to store the ... any help is very 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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547 views

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encryption - Exception in AES decryption algorithm in java

I got an exception in the following code for AES algorithm in java. Code decryptes an encrypted string and ... .Cipher.doFinal(DashoA13*..) See Question&Answers more detail:os...

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

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573 views

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encryption - C# How to simply encrypt a text file with a PGP Public Key?

I've researched a bit about how to achieve what I said in the question and found several APIs but most of them ... the private key to use it)! 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 - Load a RSA private key in Java (algid parse error, not a sequence)

I'm trying to load a private RSA key generated with ssl into java, my code is: Generate the ... .RSAKeyFactory.generatePrivate(Unknown Source) See Question&Answers more detail:os...

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

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573 views

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encryption - Encrypting and Decrypting Using Java: Unable to get same output

I am trying to learn and test the java 1.6 encryption/decryption API. I want to know what I am doing wrong ... : " + new String(outputBytes)); 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 - Passphrase, Salt and IV, do I need all of these?

If I am using Rijndael CBC mode, I have no idea why we would need salt. My understanding is even if people ... secure. Do I get anything wrong? See Question&Answers more detail:os...

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

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491 views

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encryption - How secure is SSL?

How secure is SSL (Secure Socket Layer)? As in, how much will it take to crack a password sent through SSL? See Question&Answers more detail:os...

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

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991 views

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encryption - How to pick an appropriate IV (Initialization Vector) for AES/CTR/NoPadding?

I would like to encrypt the cookies that are written by a webapp and I would like to keep the size of the ... 't want to reinvent the wheel. See Question&Answers more detail:os...

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

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456 views

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encryption - How do I compute the approximate entropy of a bit string?

Is there a standard way to do this? Googling -- "approximate entropy" bits -- uncovers multiple academic ... science definition of entropy? See Question&Answers more detail:os...

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

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