encryption

问题 I have this working java code which encrypts the passphrase with 3DES encryption- import java.security.MessageDigest; import java.util.Arrays; import java.util.Base64; import javax.crypto.Cipher; import javax.crypto.SecretKey; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; public class Main{ public static void main(String[] args) throws Exception { String text = "aug@2019"; String codedtext = new Main().encrypt(text); System.out.println(codedtext); } public

问题 I would like to use AWS's Server Side Encryption (SSE) with the AWS Key Management Service (KMS) to encrypt data at rest in S3. (See this AWS blog post detailing SSE-KMS.) However, I also have the requirement that I use Cloudfront Presigned URLs. How can I set up a Cloudfront distribution to use a key in AWS KMS to decrypt and use S3 objects encrypted at rest? (This Boto3 issue seems to be from someone looking for the same answers as me, but with no results). 回答1: This was previously not

问题 I would like to use AWS's Server Side Encryption (SSE) with the AWS Key Management Service (KMS) to encrypt data at rest in S3. (See this AWS blog post detailing SSE-KMS.) However, I also have the requirement that I use Cloudfront Presigned URLs. How can I set up a Cloudfront distribution to use a key in AWS KMS to decrypt and use S3 objects encrypted at rest? (This Boto3 issue seems to be from someone looking for the same answers as me, but with no results). 回答1: This was previously not

问题 I would like to use AWS's Server Side Encryption (SSE) with the AWS Key Management Service (KMS) to encrypt data at rest in S3. (See this AWS blog post detailing SSE-KMS.) However, I also have the requirement that I use Cloudfront Presigned URLs. How can I set up a Cloudfront distribution to use a key in AWS KMS to decrypt and use S3 objects encrypted at rest? (This Boto3 issue seems to be from someone looking for the same answers as me, but with no results). 回答1: This was previously not

问题 I am trying to work out the correct process to encrypt and decrypt a file using the "PBEWithHmacSHA256AndAES_256" standard. From what I understand from looking at this example code from Oracle. I have gathered that a salt is needed, as well as an iteration count and the hash standard. So I have my main method, passing into the encryption method: a user-defined password new String(key).toCharArray() as a byte array (using this method for other encryption runs) a secure random IV initVector as

问题 I am trying to work out the correct process to encrypt and decrypt a file using the "PBEWithHmacSHA256AndAES_256" standard. From what I understand from looking at this example code from Oracle. I have gathered that a salt is needed, as well as an iteration count and the hash standard. So I have my main method, passing into the encryption method: a user-defined password new String(key).toCharArray() as a byte array (using this method for other encryption runs) a secure random IV initVector as

问题 I am implementing a basic encryption/decryption set of functions in nodejs and I keep getting the following error in the decryption part: Error: Unsupported state or unable to authenticate data This is my code so far: import crypto from 'crypto' import logger from './logger' const ALGORITHM = 'aes-256-gcm' export const encrypt = (keyBuffer, dataBuffer, aadBuffer) => { // iv stands for "initialization vector" const iv = Buffer.from(crypto.randomBytes(12), 'utf8') logger.debug('iv: ', iv) const

问题 I am implementing a basic encryption/decryption set of functions in nodejs and I keep getting the following error in the decryption part: Error: Unsupported state or unable to authenticate data This is my code so far: import crypto from 'crypto' import logger from './logger' const ALGORITHM = 'aes-256-gcm' export const encrypt = (keyBuffer, dataBuffer, aadBuffer) => { // iv stands for "initialization vector" const iv = Buffer.from(crypto.randomBytes(12), 'utf8') logger.debug('iv: ', iv) const

问题 Query Description: Let say, I have a database table which stores all users' data in encrypted form. I have a functionality in which the Admin can search the user data. Now the problem is, Admin will enter the normal text in the textbox and I have to filter the user list(on every text change) according to the input of Admin. So meanwhile, I have the bunch of data in encrypted form and I have to filter it on the basis of normal text that Admin enters. What solution I came up till now is, I am

问题 I have searched lot before posting this question. Earlier the code was working in non android 4.2/2.1 devices. Then i googled and introduced the below lines of code. That solved it partially,ie it's now working on 4.2 devices but not on Froyo. if (android.os.Build.VERSION.SDK_INT >= JELLY_BEAN_4_2) { sr = SecureRandom.getInstance("SHA1PRNG", "Crypto"); } else { sr = SecureRandom.getInstance("SHA1PRNG"); } The below given is the class I use for encryption public class Encryption { private