pems | A javascript full-stack power equipment management system
kandi X-RAY | pems Summary
kandi X-RAY | pems Summary
A javascript full-stack power equipment management system.
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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 used LetsEncrypt's certbot to generate the cert and key pems:
...ANSWER
Answered 2022-Jan-04 at 03:41Thanks @Saif for that link. I did:
QUESTION
I have encrypted string and asymmetric RSA key. The string was encrypted by PHP and its function openssl_public_encrypt
with public part of the key and PKCS#1 v1.5 padding. I want to decrypt encrypted string with Go lang and private part of the key.
I know how to decrypt it in PHP:
...ANSWER
Answered 2021-Nov-18 at 12:19Thank you all for your comments. I have solved it and I am posting the solution below.
QUESTION
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
byte[] keyBytes = Files.readAllBytes((Paths.get("/path/to/chain.pem")));
X509EncodedKeySpec spec =
new X509EncodedKeySpec(keyBytes);
PublicKey publicKey = keyFactory.generatePublic(spec);
byte[] privateKeyBytes = Files.readAllBytes(Paths.get("/path/to/key.pem"));
PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(privateKeyBytes);
PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec);
HeldCertificate cert = new HeldCertificate.Builder().keyPair(publicKey, privateKey).build();
HandshakeCertificates clientCertificates = new HandshakeCertificates.Builder()
.heldCertificate(cert)
.build();
OkHttpClient client = new OkHttpClient.Builder()
.sslSocketFactory(clientCertificates.sslSocketFactory(), clientCertificates.trustManager())
.build();
...ANSWER
Answered 2021-Aug-25 at 22:58Those are certificates, not one or even several publickey(s). A certificate contains a publickey, but the certificate is not a publickey and cannot be read as a publickey. Moreover, those certs were issued to you for a reason; if you use the supplied chain of certs (and privatekey) the server will trust them but if you generate your own self-signed cert, even for the same key, which is what your HeldCertificate.Builder()
would do, the server won't trust that cert because it is not issued by a valid CA. Digital certificates are sometimes analogized to passports; if you have a passport, with your name and picture, issued by your government, other countries (and domestic entities also) will generally accept that as proof of your identify, but if you write your name and the word 'passport' on a piece of paper and paste a picture of yourself, nobody will accept that as proof -- that's what a self-signed certificate is like.
To read your files in Java is fairly easy. The certificates are easiest -- that format can be read by CertificateFactory
directly:
QUESTION
I'm having a bit of trouble sorting out how to adapt my Dart gRPC client to use the same TLS settings that are working with my Go client. I've already validated that I can interface with the server suppling the correct CA cert, client cert and client key. In Go I'm using:
...ANSWER
Answered 2021-Jul-14 at 14:54I ended up receiving somewhat of a proper answer on the grpc-dart issues page. The solution looks something like this:
QUESTION
I found that Kafka 2.7.0 supports PEM certificates and I decided to try setting up the broker with DigiCert SSL certificate. I used new options and I did everything like in example in KIP-651. But I get the error:
...ANSWER
Answered 2021-Jan-25 at 15:00I think this might be because the private key you are using is encrypted with a PBES2 scheme. You can use OpenSSL to convert the original key and use PBES1 instead:
QUESTION
After installing pixielabs with the bash-installer and deploying with px deploy
, this deployment got stuck (over 30min) with:
ANSWER
Answered 2021-Jan-10 at 19:43Check if the etcd
pod in the pl
namespace is in pending
state.
The Pixie Command Module is deployed in the K8s cluster to isolate data storage, therefore you'll need a persistent volume in your cluster.
QUESTION
The following script maps a network drive with the new-psdrive command. It uses get-content to load the contents of an XML file to a variable. Truncated lines modify the XML object. Then it uses the XML save method to save the file. The script gives the error "Exception calling "Save" with "1" argument(s): "Could not find a part of the path 'M:\folder3\pems.xml'."
...ANSWER
Answered 2020-Oct-29 at 18:35I fixed the problem by adding "-persist" to the "New-PSDrive" command. After that the save() method and all my external calls to executables recognized the drive.
As Mathias R Jesson stated, any commands that aren't native Powershell commands won't recognize the PSDrive object (unless -persist) is used.
QUESTION
I am going to lay out each step of my process for my get call. Every GET call on my website is setup exactly the same and they work 99% of the time. A few of the API calls result in a 404 some of the time and I have no idea why.
The process works for 100s of GET calls in this fasion.
Flow is:
- An Angular page calls the DB service.
- The DB service send GET request to backend router.
- Router then goes to the middleware to validate a token.
- Router then hits the a controller which has an await for getting data from the database.
- Controller calls the db_api call with actuall SQL
- Data is return to Angular.
Current Errors:
...ANSWER
Answered 2020-Oct-23 at 18:11You need to move the return next();
at the bottom of the Validate
function inside the else
:
QUESTION
I am generating a keypair like below:
...ANSWER
Answered 2020-May-08 at 17:55Whatever code jwt.io is using is unnecessarily fragile.
When using PKCS8 for an 'EC' (X9.62-style, ECDSA and/or ECDH and/or related) private key, the algorithm-dependent part uses the structure defined by appendix C.4 of SEC1 from https://secg.org :
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