RSA | 一个在Android中使用RSA加密的例子。使用AndroidStudioNDK编程
kandi X-RAY | RSA Summary
kandi X-RAY | RSA Summary
一个在Android中使用RSA加密的例子。使用AndroidStudio+NDK编程
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Top functions reviewed by kandi - BETA
- Initialize the activity
- Initialize public key data
- Load RSA private key
- Load the public key
- Encrypt data
- Decrypt encrypted data
RSA Key Features
RSA Examples and Code Snippets
Lines of Code : 14License : Permissive (MIT License)
Copypublic static RSAPrivateKey readPKCS8PrivateKey(File file) throws GeneralSecurityException, IOException {
String key = new String(Files.readAllBytes(file.toPath()), Charset.defaultCharset());
String privateKeyPEM = key
public static RSAPublicKey readX509PublicKey(File file) throws GeneralSecurityException, IOException {
String key = new String(Files.readAllBytes(file.toPath()), Charset.defaultCharset());
String publicKeyPEM = key
.r public static RSAPrivateKey readPKCS8PrivateKey(File file) throws InvalidKeySpecException, IOException, NoSuchAlgorithmException {
KeyFactory factory = KeyFactory.getInstance("RSA");
try (FileReader keyReader = new FileReader(file);
Community Discussions
Trending Discussions on RSA
QUESTION
I am using a company-hosted (Bitbucket) git repository that is accessible via HTTPS. Accessing it (e.g. git fetch) worked using macOS 11 (Big Sur), but broke after an update to macOS 12 Monterey.
*
After the update of macOS to 12 Monterey my previous git setup broke. Now I am getting the following error message:
...ANSWER
Answered 2021-Nov-02 at 07:12Unfortunately I can't provide you with a fix, but I've found a workaround for that exact same problem (company-hosted bitbucket resulting in exact same error).
I also don't know exactly why the problem occurs, but my best guess would be that the libressl library shipped with Monterey has some sort of problem with specific (?TLSv1.3) certs. This guess is because the brew-installed openssl v1.1 and v3 don't throw that error when executed with /opt/homebrew/opt/openssl/bin/openssl s_client -connect ...:443
To get around that error, I've built git from source built against different openssl and curl implementations:
- install
autoconf,opensslandcurlwith brew (I think you can select the openssl lib you like, i.e. v1.1 or v3, I chose v3) - clone git version you like, i.e.
git clone --branch v2.33.1 https://github.com/git/git.git cd gitmake configure(that is why autoconf is needed)- execute
LDFLAGS="-L/opt/homebrew/opt/openssl@3/lib -L/opt/homebrew/opt/curl/lib" CPPFLAGS="-I/opt/homebrew/opt/openssl@3/include -I/opt/homebrew/opt/curl/include" ./configure --prefix=$HOME/git(here LDFLAGS and CPPFLAGS include the libs git will be built against, the right flags are emitted by brew on install success of curl and openssl; --prefix is the install directory of git, defaults to/usr/localbut can be changed) make install- ensure to add the install directory's subfolder
/binto the front of your$PATHto "override" the default git shipped by Monterey - restart terminal
- check that
git versionshows the new version
This should help for now, but as I already said, this is only a workaround, hopefully Apple fixes their libressl fork ASAP.
QUESTION
After start of using NixOS as a new package management system, I get the following error when using git within Azure DevOps repositories and rsa ssh key:
...ANSWER
Answered 2021-Nov-12 at 12:44According to this post, you can add ssh.dev.azure.com host config to your ~/.ssh/config file:
Final
~/.ssh/configthat worked for me:
QUESTION
This is regarding a Spring Cloud Config Server hobby project (with @EnableConfigServer).
Yesterday, the application could be started.
Today, the application failed to start because of a Git communication error.
From GitHub's official blog post, it is mentioned that SHA-1 is no longer supported starting from 15 March 2022. And that explains the results I'm getting these 2 days.
March 15, 2022
Changes made permanent.
We’ll permanently stop accepting DSA keys. RSA keys uploaded after the cut-off point above will work only with SHA-2 signatures (but again, RSA keys uploaded before this date will continue to work with SHA-1). The deprecated MACs, ciphers, and unencrypted Git protocol will be permanently disabled.
Even if I didn't delete the existing SSH key, it still failed to start today. But anyway, now the only key under the "Deploy keys" section of the repository settings is an SSH key that was added after the March 15, 2022 cut off date.
Dependency versionsDependency Management:
Dependency Version spring-cloud-dependencies Hoxton.SR12Dependency:
Dependency Version spring-cloud-config-server (Managed) Spring application configurationsapplication.yml:
ANSWER
Answered 2022-Mar-16 at 14:07I have a same problem.
See https://github.com/spring-cloud/spring-cloud-config/issues/2061
For right now, I have a dirty workaround: use https uri, username and password(maybe personal secret token).
QUESTION
I'm experimenting with Chaum's blind signature, and what I'm trying to do is have the blinding and un-blinding done in JavaScript, and signing and verifying in Java (with bouncy castle). For the Java side, my source is this, and for JavaScript, I found blind-signatures. I've created two small codes to play with, for the Java side:
...ANSWER
Answered 2021-Dec-13 at 14:56The blind-signature library used in the NodeJS code for blind signing implements the process described here:
BlindSignature.blind()generates the SHA256 hash of the message and determines the blind message m' = m * re mod N.BlindSignature.sign()calculates the blind signature s' = (m')d mod N.BlindSignature.unblind()determines the unblind signature s = s' * r-1 mod N.BlindSignature.verify()decrypts the unblind signature (se) and compares the result with the hashed message. If both are the same, the verification is successful.
No padding takes place in this process.
In the Java code, the implementation of signing the blind message in signConcealedMessage() is functionally identical to BlindSignature.sign().
In contrast, the verification in the Java code is incompatible with the above process because the Java code uses PSS as padding during verification.
A compatible Java code would be for instance:
QUESTION
I'm deploying a spring-boot application and prometheus container through docker, and have exposed the spring-boot /actuator/prometheus endpoint successfully. However, when I enable prometheus debug logs, I can see it fails to scrape the metrics:
ANSWER
Answered 2022-Feb-07 at 22:37Ok, I think I found my problem. I made two changes:
First, I moved the contents of the web.config.file into the prometheus.yml file under the 'spring-actuator'. Then I changed the target to use the hostname for my backend container, rather than 127.0.0.1.
The end result was a single prometheus.yml file:
QUESTION
I have pretrained model for object detection (Google Colab + TensorFlow) inside Google Colab and I run it two-three times per week for new images I have and everything was fine for the last year till this week. Now when I try to run model I have this message:
...ANSWER
Answered 2022-Feb-07 at 09:19It happened the same to me last friday. I think it has something to do with Cuda instalation in Google Colab but I don't know exactly the reason
QUESTION
I want to encrypt data in a web browser that is send to my C# backend and decrypted there.
That fails because I am unable to decrypt the data generated on the frontend in the backend.
Here's what I did so far.
First I created a private/public key pair (in XmlString Format). I took the ExportPublicKey function to generate the public key file from here: https://stackoverflow.com/a/28407693/98491
ANSWER
Answered 2022-Jan-24 at 15:42You need to encrypt with the private key and then decrypt with the public key
QUESTION
Environment:
...ANSWER
Answered 2022-Jan-25 at 07:13Git For Windows 2.33.1 comes with OpenSSH 8.8 which disables RSA signatures using the SHA-1 hash algorithm by default.
For most users, this change should be invisible and there is no need to replace ssh-rsa keys.
OpenSSH has supported RFC8332 RSA/SHA-256/512 signatures since release 7.2 and existing ssh-rsa keys will automatically use the stronger algorithm where possible.Incompatibility is more likely when connecting to older SSH implementations that have not been upgraded or have not closely tracked improvements in the SSH protocol.
For these cases, it may be necessary to selectively re-enable RSA/SHA1 to allow connection and/or user authentication via the HostkeyAlgorithms and PubkeyAcceptedAlgorithms options.
For example, the following stanza in ~/.ssh/config will enable RSA/SHA1 for host and user authentication for a single destination host:
QUESTION
I have a Python 3 application running on CentOS Linux 7.7 executing SSH commands against remote hosts. It works properly but today I encountered an odd error executing a command against a "new" remote server (server based on RHEL 6.10):
encountered RSA key, expected OPENSSH key
Executing the same command from the system shell (using the same private key of course) works perfectly fine.
On the remote server I discovered in /var/log/secure that when SSH connection and commands are issued from the source server with Python (using Paramiko) sshd complains about unsupported public key algorithm:
userauth_pubkey: unsupported public key algorithm: rsa-sha2-512
Note that target servers with higher RHEL/CentOS like 7.x don't encounter the issue.
It seems like Paramiko picks/offers the wrong algorithm when negotiating with the remote server when on the contrary SSH shell performs the negotiation properly in the context of this "old" target server. How to get the Python program to work as expected?
Python code
...ANSWER
Answered 2022-Jan-13 at 14:49Imo, it's a bug in Paramiko. It does not handle correctly absence of server-sig-algs extension on the server side.
Try disabling rsa-sha2-* on Paramiko side altogether:
QUESTION
I have 2 different github accounts, 1 for work and 1 for personal projects. On my laptop, I created 2 different directories to clone my Github repositories:
Perso: /Users/pierre-alexandre/Documents/perso
Work: /Users/pierre-alexandre/Documents/work
Then, I generated 2 different SSH keys on /Users/pierre-alexandre/.ssh and added each .pub key on their respective Github repository. At the end this is what my /Users/pierre-alexandre/.ssh folder looks like:
ANSWER
Answered 2021-Nov-20 at 09:48Git just runs ssh to connect to a host. Once connected, Git has that ssh run an appropriate Git command on their end, to handle the fetch or push operation. But the entire authentication process—determining who you are and deciding whether you have access—is wholly up to ssh and Git plays no real part in this process.
Your ssh -Tv is therefore the crucial debug output here. We see that your connection to github fails to authenticate as you, after trying these keys:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install RSA
You can use RSA 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 RSA 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 .
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