Encryption | simple way to encrypt and decrypt strings | Encryption library

 by   simbiose Java Version: 2.0.1 License: MIT

kandi X-RAY | Encryption Summary

kandi X-RAY | Encryption Summary

Encryption is a Java library typically used in Security, Encryption, Gradle applications. Encryption has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. However Encryption build file is not available. You can download it from GitHub, Maven.

Encryption is a simple way to encrypt and decrypt strings on Android and Java project.
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            kandi-support Support

              Encryption has a low active ecosystem.
              It has 327 star(s) with 81 fork(s). There are 25 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 8 open issues and 17 have been closed. On average issues are closed in 105 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of Encryption is 2.0.1

            kandi-Quality Quality

              Encryption has 0 bugs and 0 code smells.

            kandi-Security Security

              Encryption has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              Encryption code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              Encryption is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              Encryption releases are available to install and integrate.
              Deployable package is available in Maven.
              Encryption has no build file. You will be need to create the build yourself to build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              It has 1006 lines of code, 70 functions and 11 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed Encryption and discovered the below as its top functions. This is intended to give you an instant insight into Encryption implemented functionality, and help decide if they suit your requirements.
            • Main entry point
            • Display the common usage
            • Encrypt a String
            • Decrypt a string
            • Start the async usage
            • Method to encrypt a string
            • Encrypt a string
            • Demonstrates how to create a custom encryption usage
            • Get Encryption instance
            • Method to decrypt a string
            • Re - encode the given data with the given flags
            • Hashes a simple string using SHA - 1
            • Generates a 128 - bit cipher for the given key
            • Decodes a base64 - encoded data
            • Decrypts a string
            • Base64 - encodes a byte array
            • Creates the Encryption instance
            • Logs a message
            Get all kandi verified functions for this library.

            Encryption Key Features

            No Key Features are available at this moment for Encryption.

            Encryption Examples and Code Snippets

            Entry point for text encryption .
            javadot img1Lines of Code : 64dot img1License : Permissive (MIT License)
            copy iconCopy
            public static void main(String args[]) {
                    Scanner sc = new Scanner(System.in);
                    System.out.println("Enter the input to be encrypted: ");
                    String substitutionInput = sc.nextLine();
                    System.out.println(" ");
                    System.o  
            Makes the encryption key .
            pythondot img2Lines of Code : 24dot img2License : Permissive (MIT License)
            copy iconCopy
            def make_decrypt_key(self) -> numpy.ndarray:
                    """
                    >>> hill_cipher = HillCipher(numpy.array([[2, 5], [1, 6]]))
                    >>> hill_cipher.make_decrypt_key()
                    array([[ 6, 25],
                           [ 5, 26]])
                    ""  
            Encrypt text using the encryption key .
            pythondot img3Lines of Code : 24dot img3License : Permissive (MIT License)
            copy iconCopy
            def encrypt(self, text: str) -> str:
                    """
                    >>> hill_cipher = HillCipher(numpy.array([[2, 5], [1, 6]]))
                    >>> hill_cipher.encrypt('testing hill cipher')
                    'WHXYJOLM9C6XT085LL'
                    >>> hill_ci  

            Community Discussions

            QUESTION

            How to use sized traits in structs?
            Asked 2022-Apr-03 at 21:27

            I'm trying to use the AES crate, which offers three algorithms: AES128, AES192 and AES256. I'm trying to create a struct that can create the correct algorithm by detecting the key size, and save it to later use.

            I see they all implement the BlockEncrypt (I only need encryption) trait, but when I try to make a field in the struct with this type, even when supplying the size, i get an "the trait BlockEncrypt cannot be made into an object. the trait cannot be made into an object because it requires Self: Sized " error.

            ...

            ANSWER

            Answered 2022-Apr-03 at 19:42

            As @cdhowie mentioned, you can't create a trait object from a trait with a Sized bound. Instead, you can create an enum:

            Source https://stackoverflow.com/questions/71729012

            QUESTION

            Crypto-js encryption and Python decryption using HKDF key
            Asked 2022-Mar-28 at 11:29

            Based on the example provided here on how to establish a shared secret and derived key between JS (Crypto-JS) and Python, I can end up with the same shared secret and derived key on both ends.

            However, when I try to encrypt as below, I cannot find a way to properly decrypt from Python. My understanding is that probably I am messing with the padding or salts and hashes.

            ...

            ANSWER

            Answered 2022-Mar-28 at 11:29

            The issue is that the key is not passed correctly in the CryptoJS code.

            The posted Python code generates LefjQ2pEXmiy/nNZvEJ43i8hJuaAnzbA1Cbn1hOuAgA= as Base64-encoded key. This must be imported in the CryptoJS code using the Base64 encoder:

            Source https://stackoverflow.com/questions/71632056

            QUESTION

            Reading encrypted private key in PKCS#8 format through bouncycastle, Java failing in docker container
            Asked 2022-Jan-31 at 01:18

            I am trying to read a PKCS#8 private key which looks like following:

            key.k8 --> (Sample key. Passphrase - 123456):

            ...

            ANSWER

            Answered 2022-Jan-30 at 12:33

            Edit:

            On second thought, when creating the JceOpenSSLPKCS8DecryptorProviderBuilder, you're not explicitly specifying the provider:

            Source https://stackoverflow.com/questions/70786275

            QUESTION

            iOS CryptoSwift AES Encryption to Python Decryption works - but not the inverse
            Asked 2022-Jan-28 at 10:30

            I am using CryptoSwift 1.4.1, iOS 15.2, PyCryptodome 3.12.0, and XCode 13.2.1 to encrypt small string messages that I send to a Raspberry Pi Linux Device over BLE. It works when iOS encrypts the message and sends it to the Raspberry Pi. The Pi can successfully decrypt it. Now I want to do the inverse, encrypt a message on the Pi and have the iOS App read and decrypt it. This, however is not working and the decrypted value is the not the message I encrypted on the Pi.

            Working iOS encryption:

            ...

            ANSWER

            Answered 2022-Jan-28 at 10:30

            In the encrypt() method the IV is not considered. As in aesEncrypt(), the IV must be passed and used when creating the AES object.
            Furthermore there are bugs in the encoding: The plaintext must be UTF8 encoded and the ciphertext must be hex encoded:

            Source https://stackoverflow.com/questions/70809612

            QUESTION

            Use string value for argument typed as Literal
            Asked 2022-Jan-26 at 17:45

            I use kms.decrypt() method from boto3 package. For typing support I use the boto3-stubs package.

            The decrypt method has attribute EncryptionAlgorithm, which is typed as

            ...

            ANSWER

            Answered 2021-Nov-14 at 17:00

            You can use typing.get_args to get the arguments passed in to typing.Literal. In this case, you'll need to combine it with typing.cast so you can signal to "mypy" that the string value that the function returns is an acceptable Literal value.

            Source https://stackoverflow.com/questions/69949169

            QUESTION

            How do I calculate a key check value for AES-128-CBC?
            Asked 2022-Jan-13 at 16:47

            I'm trying to implement a function in Java to calculate the key check value for a 128 bit AES encryption key. The AES128CBCEncryptor class is implementing AES/128/CBC with ISO 9797-1 M2 padding.

            The only information I can find on the key check value algorithm for AES says "the KCV for an AES key is computed by encrypting 16 bytes, each with value '01'.". It does not specify how the IV should be constructed.

            Here is what I have thus far, but it's not generating the expected result:

            ...

            ANSWER

            Answered 2022-Jan-13 at 16:47

            For a Key Check Value (KCV) one generally uses single block encryption, without any mode such as ECB or CBC. As only a constant value of 16 bytes is used, there is no need for padding either.

            If you just have a CBC class that performs ISO 9797-1 M2 padding then you could encrypt the static value of 01010101010101010101010101010101 (hex encoding of 16 bytes), using an all-zero IV and taking the first 16 bytes from the result (removing 16 bytes of ciphertext at the end that is just encryption of the mandatory padding).

            As you can see in the image below, because the IV is all zero, the XOR with the plaintext leaves the input intact, basically making the first ciphertext identical to direct encryption with the block cipher.

            By WhiteTimberwolf (SVG version) - PNG version, Public Domain, https://commons.wikimedia.org/w/index.php?curid=26434096

            However, as you are using Java, it makes more sense to use a Cipher object using algorithm "AES/ECB/NoPadding" and use that to encrypt the value of 01010101010101010101010101010101 directly. ECB doesn't take an IV, so that problem is avoided. Also, no padding needs to be considered when "NoPadding" is specified.

            If you need fewer bytes: those are usually taken from the left (lowest index) of the result.

            Beware that these kinds of KCV's are somewhat dangerous as they show the ciphertext of one particular plaintext block. In the worst instances, this could lead to an adversary decrypting one ciphertext block, or for an authenticated scheme to lose its integrity/authentication properties.

            Commonly KCV's are over an all-zero plaintext block. Using an all one-valued block makes the chance that this happens smaller, but that chance is still significant.

            Source https://stackoverflow.com/questions/70683993

            QUESTION

            Convert Node crypto aes-256-cbc to CryptoJS
            Asked 2022-Jan-10 at 21:43

            How to convert the following Node's built-in crypto module encryption to CryptoJS?

            ...

            ANSWER

            Answered 2022-Jan-10 at 21:43

            Both codes use the OpenSSL proprietary key derivation function EVP_BytesToKey() with an iteration count of 1 and MD5 as digest.
            NodeJS does not use a salt, while CryptoJS applies a random salt. For this reason, the NodeJS result is unchanged for each encryption, while the CryptoJS result always changes (assuming the same plaintext and passphrase).

            Thus, to get the result of the NodeJS code with the CryptoJS code, you must not use a salt. However, by default, a salt is always applied. This can only be circumvented by explicitly determining key and IV with the key derivation function EvpKDF and then using both in the encryption:

            Source https://stackoverflow.com/questions/70658455

            QUESTION

            Problem Updating to .Net 6 - Encrypting String
            Asked 2021-Dec-20 at 23:09

            I'm using a string Encryption/Decryption class similar to the one provided here as a solution.

            This worked well for me in .Net 5.
            Now I wanted to update my project to .Net 6.

            When using .Net 6, the decrypted string does get cut off a certain point depending on the length of the input string.

            ▶️ To make it easy to debug/reproduce my issue, I created a public repro Repository here.

            • The encryption code is on purpose in a Standard 2.0 Project.
            • Referencing this project are both a .Net 6 as well as a .Net 5 Console project.

            Both are calling the encryption methods with the exact same input of "12345678901234567890" with the path phrase of "nzv86ri4H2qYHqc&m6rL".

            .Net 5 output: "12345678901234567890"
            .Net 6 output: "1234567890123456"

            The difference in length is 4.

            I also looked at the breaking changes for .Net 6, but could not find something which guided me to a solution.

            I'm glad for any suggestions regarding my issue, thanks!

            Encryption Class

            ...

            ANSWER

            Answered 2021-Nov-10 at 10:25

            The reason is this breaking change:

            DeflateStream, GZipStream, and CryptoStream diverged from typical Stream.Read and Stream.ReadAsync behavior in two ways:

            They didn't complete the read operation until either the buffer passed to the read operation was completely filled or the end of the stream was reached.

            And the new behaviour is:

            Starting in .NET 6, when Stream.Read or Stream.ReadAsync is called on one of the affected stream types with a buffer of length N, the operation completes when:

            At least one byte has been read from the stream, or The underlying stream they wrap returns 0 from a call to its read, indicating no more data is available.

            In your case you are affected because of this code in Decrypt method:

            Source https://stackoverflow.com/questions/69911084

            QUESTION

            convert base-64 spki string into public key
            Asked 2021-Dec-17 at 18:59

            I'm trying to find a python equivalent of this js function:

            ...

            ANSWER

            Answered 2021-Dec-17 at 18:59

            According to the documentation of the JavaScript library the line

            Source https://stackoverflow.com/questions/70394759

            QUESTION

            Data Encryption static encrypt
            Asked 2021-Dec-13 at 08:04

            My hexidigit is changing on day by day basis. How can I change it back to static

            Code

            ...

            ANSWER

            Answered 2021-Dec-13 at 08:04

            I got the solution by encrypting the key using bytes() Use the byte method to store the key in secured config file or database and encrypt the byte string to get the key. After that use any cipher method with suitable algorithm to encrypt the data and mask it.

            Source https://stackoverflow.com/questions/69521408

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install Encryption

            You can download it from GitHub, Maven.
            You can use Encryption like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the Encryption component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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