hkdf | standalone Java 7 implementation of HMAC-based key | Cryptography library

 by   patrickfav Java Version: 1.1.0 License: Apache-2.0

kandi X-RAY | hkdf Summary

kandi X-RAY | hkdf Summary

hkdf is a Java library typically used in Financial Services, Fintech, Security, Cryptography applications. hkdf has build file available, it has a Permissive License and it has high support. However hkdf has 2 bugs and it has 1 vulnerabilities. You can download it from GitHub, Maven.

For the full description see the RFC 5869. For an in-depth discussion about the security considerations see the Paper "Cryptographic Extraction and Key Derivation: The HKDF Scheme (2010)" by Hugo Krawczyk. The following is a summary of the 2 sources above. If there seems to be a contradiction, the original sources are always correct over this.
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            kandi-support Support

              hkdf has a highly active ecosystem.
              It has 50 star(s) with 11 fork(s). There are 4 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 1 open issues and 4 have been closed. On average issues are closed in 34 days. There are no pull requests.
              OutlinedDot
              It has a negative sentiment in the developer community.
              The latest version of hkdf is 1.1.0

            kandi-Quality Quality

              hkdf has 2 bugs (0 blocker, 1 critical, 1 major, 0 minor) and 46 code smells.

            kandi-Security Security

              hkdf has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              hkdf code analysis shows 1 unresolved vulnerabilities (0 blocker, 1 critical, 0 major, 0 minor).
              There are 1 security hotspots that need review.

            kandi-License License

              hkdf is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              hkdf releases are available to install and integrate.
              Deployable package is available in Maven.
              Build file is available. You can build the component from source.
              Installation instructions, examples and code snippets are available.
              It has 954 lines of code, 67 functions and 8 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed hkdf and discovered the below as its top functions. This is intended to give you an instant insight into hkdf implemented functionality, and help decide if they suit your requirements.
            • Command - line tool
            • Downloads a file from the URL
            • Gets a HKDFHDF from the HmacSHA256
            • Returns a HKDF factory configured with the given MACFactory
            • Gets a HKDF HmacSHA512 configured in use
            Get all kandi verified functions for this library.

            hkdf Key Features

            No Key Features are available at this moment for hkdf.

            hkdf Examples and Code Snippets

            HMAC-based Key Derivation Function (HKDF) RFC 5869,Quickstart,Full Example
            Javadot img1Lines of Code : 20dot img1License : Permissive (Apache-2.0)
            copy iconCopy
            //if no dynamic salt is available, a static salt is better than null
            byte[] staticSalt32Byte = new byte[]{(byte) 0xDA, (byte) 0xAC, 0x3E, 0x10, 0x55, (byte) 0xB5, (byte) 0xF1, 0x3E, 0x53, (byte) 0xE4, 0x70, (byte) 0xA8, 0x77, 0x79, (byte) 0x8E, 0x0A,  
            HMAC-based Key Derivation Function (HKDF) RFC 5869,Quickstart
            Javadot img2Lines of Code : 7dot img2License : Permissive (Apache-2.0)
            copy iconCopy
            
                at.favre.lib
                hkdf
                {latest-version}
            
            
            byte[] pseudoRandomKey = HKDF.fromHmacSha256().extract(null, lowEntropyInput);
            byte[] outputKeyingMaterial = HKDF.fromHmacSha256().expand(pseudoRandomKey, null, 64);
              
            Digital Signatures
            Javadot img3Lines of Code : 6dot img3License : Permissive (Apache-2.0)
            copy iconCopy
            CN=Patrick Favre-Bulle, OU=Private, O=PF Github Open Source, L=Vienna, ST=Vienna, C=AT
            Validity: Thu Sep 07 16:40:57 SGT 2017 to: Fri Feb 10 16:40:57 SGT 2034
            SHA1: 06:DE:F2:C5:F7:BC:0C:11:ED:35:E2:0F:B1:9F:78:99:0F:BE:43:C4
            SHA256: 2B:65:33:B0:1C:0D  

            Community Discussions

            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

            Issue installing cryptography on Raspberry Pi 2B (armv7h Arch Linux ARM) (python 3.9.8)
            Asked 2022-Feb-05 at 19:41

            I'm having some trouble installing the python cryptography package on my raspberry pi, specifically with python version 3.9.8 (installed with pyenv). The cryptography package is installed on my system using pacman (python-cryptography package), and thus works using the main python interpreter (3.10.1). However, I need some version of python 3.9 specifically for another package I am using in this project. Any time I try to install cryptography through the python 3.9.8 environment, I get the following error:

            ...

            ANSWER

            Answered 2022-Jan-14 at 19:59

            @jakub's solution ended up solving the problem for me. I uninstalled the version of rust that was installed through pacman. To replace it, I installed rustup and then using rustup, installed the latest nightly version of rust (1.60). Once I did that, installing the cryptography package worked just fine.

            If you are using rustup, just make sure that you add ~/.cargo/bin to your PATH before installation. Also, the command I used to install rust through rustup was rustup toolchain install nightly.

            Source https://stackoverflow.com/questions/70690519

            QUESTION

            Deploying next-auth app to Vercel creates error in credentials provider
            Asked 2021-Dec-27 at 18:04

            I am trying to deploy my next app to vercel. I am using next-auth for authentication with credentials and an api that returns a JWT. On localhost it works ok, but when I put it on vercel, and try to login, nothing happens. However when I view the logs in the project's dashboard functions, there's an error:

            ...

            ANSWER

            Answered 2021-Dec-27 at 18:04

            in your .env file creates an environment variable:

            Source https://stackoverflow.com/questions/70429564

            QUESTION

            Can't install python cryptography on Cygwin
            Asked 2021-Dec-22 at 23:06

            I have installed python38-cryptogrpahy package v.3.3.2-1 thru cygwin but when I try to install fabric via pip - it tries to build it and fails with next error:

            ...

            ANSWER

            Answered 2021-Dec-19 at 11:47

            Try to upgrade pip: python -m pip install --upgrade pip

            Source https://stackoverflow.com/questions/70411027

            QUESTION

            Shared key generation from EC with pycryptodome
            Asked 2021-Dec-17 at 16:01

            I'm curently working on a project were i need to compute an hkdf symetric key. To do that i need to generate a shared secret from the private key and an ephemeral public key.

            For the rest of my work i did use pycryptodome but i can't find in the doc if it allow generation of shared secret. I saw in the futur plan their intention to add Elliptic Curves (ECIES, ECDH) since ecdh is based on shared key it wouldn't be suprising if shared key generation is not implemented yet.

            I tried using the cryptography lib too but impossible to load my ephemeral key.

            ...

            ANSWER

            Answered 2021-Nov-23 at 17:46

            With help of @Topaco i ended up making this function:

            Source https://stackoverflow.com/questions/70079609

            QUESTION

            Compute ecies hkdf symetric key with pycryptodome
            Asked 2021-Nov-23 at 15:39

            Context: i'm working on making a python version of paymentmethodtoken from the google tink librarie to work with gpay messages. For that i use only python and PyCryptodome.

            With that said i'm currently trying to implement an equivalent of the kem function:

            ...

            ANSWER

            Answered 2021-Nov-23 at 15:39

            QUESTION

            Web cryptography implement HKDF for the output of ECDH
            Asked 2021-Jun-13 at 11:02

            I want implement a elliptic curve diffie hellman using HKDF as key derivation function. I am using a python backend and (vanilla) javascript in frontend. I am using python cryptography library in backend and Web Crypto api in frontend as cryptographic library. I created ECDH key pair in both side and exchanged the pbulic keys. Now I am trying to create the AES shared key with the exchanged public key and private key along with HKDF algorithm. I am able to do it in the python backend (I followed this example for the python code):

            ...

            ANSWER

            Answered 2021-Jun-13 at 11:02

            The referenced Python code uses P-384 (aka secp384r1) as elliptic curve. This is compatible with the WebCrypto API, which supports three curves P-256 (aka secp256r1), P-384 and P-521 (aka secp521r1), see EcKeyImportParams.

            The following WebCrypto code generates a shared secret using ECDH and derives an AES key from the shared secret using HKDF. In detail the following happens:

            • To allow comparison of the derived key with that of the referenced Python code, predefined EC keys are applied. The private key is imported as PKCS#8, the public key as X.509/SPKI. Note that due to a Firefox bug concerning the import of EC keys, the script below cannot be run in the Firefox browser.
            • After the import the shared secret is created with ECDH using deriveBits() (and not deriveKey()).
            • The shared secret is imported with importKey() and then the AES key is derived using HKDF, again with deriveBits().

            Source https://stackoverflow.com/questions/67938461

            QUESTION

            Password hashing using CryptoKit
            Asked 2021-May-29 at 21:03

            I'm using (CryptoKit) to use AES-GCM to encrypt some data and authenticate it as well.

            However, I was wondering how I would generate an AES-GCM key from a plain text password. Normally, you would use a KDF function for that, like PBKDF2.

            In CryptoKit, there is a HKDF class which does about what I want: https://developer.apple.com/documentation/cryptokit/hkdf

            However, I am wondering what KDF algorithm the DeriveKey function uses. Does it use PBKDF2? Does it use bcrypt? If so, how do I specify settings, or are the settings automatically determined?

            ...

            ANSWER

            Answered 2021-May-29 at 21:03

            HKDF is defined in RFC5869. It is intended to generate keys from some cryptographically secure "keying material" (IKM). It is not intended for stretching a human-generated password. As discussed in section 4 Applications of HKDF:

            On the other hand, it is anticipated that some applications will not be able to use HKDF "as-is" due to specific operational requirements, or will be able to use it but without the full benefits of the scheme. One significant example is the derivation of cryptographic keys from a source of low entropy, such as a user's password. The extract step in HKDF can concentrate existing entropy but cannot amplify entropy. In the case of password-based KDFs, a main goal is to slow down dictionary attacks using two ingredients: a salt value, and the intentional slowing of the key derivation computation. HKDF naturally accommodates the use of salt; however, a slowing down mechanism is not part of this specification. Applications interested in a password-based KDF should consider whether, for example, [PKCS5] meets their needs better than HKDF.

            I don't believe that CryptoKit offers a PBKDF of any kind (PBKDF2, scrypt, bcrypt, argon2). It's a very limited framework (I have yet to find a situation where it was useful). You will likely need to continue to use CommonCrypto for this, or implement it yourself (or use something like CryptoSwift, which I believe implements several).

            Source https://stackoverflow.com/questions/67747650

            QUESTION

            Can't install keyrings.google-artifactregistry-auth, requires Rust?
            Asked 2021-May-24 at 18:59

            I tried to install the https://pypi.org/project/keyrings.google-artifactregistry-auth/ package, but installation failed because it claims that Rust is required to install:

            This package requires Rust >=1.41.0.

            How can I install this? Do I need to install Rust?

            Full output is here:

            ...

            ANSWER

            Answered 2021-May-24 at 18:59

            The issue is that your pip version is too old to install one of this project's subdependencies, cryptography, which is using newer features.

            Upgrading pip with the following will make it possible to install this package:

            Source https://stackoverflow.com/questions/67677569

            QUESTION

            Ed25519 in JDK 15, Parse public key from byte array and verify
            Asked 2021-Apr-27 at 17:42

            Since Ed25519 has not been around for long (in JDK), there are very few resources on how to use it.

            While their example is very neat and useful, I have some trouble understanding what am I doing wrong regarding key parsing.

            They Public Key is being read from a packet sent by an iDevice.

            (Let's just say, it's an array of bytes)

            From the searching and trying my best to understand how the keys are encoded, I stumbled upon this message.

            ...

            ANSWER

            Answered 2021-Jan-20 at 22:39

            Actually, the whole encoding and decoding is correct. The one thing in the end, that was the problem was that I (by mistake) reversed the array I read one too many times.

            Reversing arrays since certain keys are encoded in little endian, while in order to represent it as a BigInteger in JVM, you have to reverse the little endian so it becomes big endian.

            Hopefully this helps everyone in the future who will get stuck on any similar problems.

            If there will be any questions, simply comment here or send me a message here. I'll do my best to help you out.

            Source https://stackoverflow.com/questions/65780235

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

            Vulnerabilities

            No vulnerabilities reported

            Install hkdf

            Add dependency to your pom.xml (check latest release):.
            The artifacts are deployed to jcenter and Maven Central.
            Use the Maven wrapper to create a jar including all dependencies.

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            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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            https://github.com/patrickfav/hkdf.git

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            gh repo clone patrickfav/hkdf

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