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115 votes
8 answers
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I'm in the process of creating a CSR, and I wonder which is arguably the best length for my RSA key. Of course, 384 is probably too weak, and 16384 is probably too slow. Is there a consensus on the ...
Marc-François's user avatar
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0 votes
0 answers
75 views

I'm building a Flutter app that uses Android TV Remote Protocol v2. The app requires client certificates for authentication. When I use a manually created certificate (placed in assets), everything ...
shakti goyal's user avatar
  • 623
3 votes
1 answer
11k views

I'm using JWT. This is how I create the token. func createToken(user User) (string, error) { token := jwt.New(jwt.GetSigningMethod("RS256")) token.Claims["Name"] = user.Name token.Claims[...
Community's user avatar
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1 vote
0 answers
528 views

I'm creating a self signed certificate on Android using SpongyCastle. KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA", "BC"); ContentSigner sigGen = new ...
Jason Aller's user avatar
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12 votes
1 answer
30k views

I am generating private and public keys using OpenSSL in PHP, which I intend to store in a database (although you probably don't need to know PHP to answer this question). They look like this: -----...
StackzOfZtuff's user avatar
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1 vote
0 answers
78 views

For FIPS mode, I added ClientSignatureAlgorithm in opensslcnf.txt. This change was done for FIPS mode using the crypto-policies package. The support ciphers for ClientSignatureAlgorithms are same as ...
Akshit Soneji's user avatar
  • 41
151 votes
7 answers
135k views

How do you use an identity file with rsync? This is the syntax I think I should be using with rsync to use an identity file to connect: rsync -avz -e 'ssh -p1234 -i ~/.ssh/1234-identity' \ "/local/...
L Kemp's user avatar
  • 2,428
2 votes
1 answer
9k views

I need encrypt data with RSA using public key and decrypt using private key. Public and private keys generation not needed. I know that algorithm require computing resources, but I use only 32-128-bit ...
Community's user avatar
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16 votes
2 answers
39k views

Using the Cryptography module for Python, I want to save my generated private key in a file, to use it later on. But from the docs I was unable to find the method needed for this. from ...
Arthur Avello's user avatar
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0 votes
1 answer
1k views

Hoping somebody can point me in the right direction here. I'm not particularly familiar with encryption (in Java or otherwise), but I said that I'd help somebody out with a task they have that ...
DaveL17's user avatar
  • 2,061
-1 votes
1 answer
268 views

From what I understand, a web server sends a CSR to a CA, which contains web server’s RSA public key and identity (subject, CN etc.). CA adds some more information (e.g. issuer, validity dates), signs ...
Nimantha's user avatar
  • 6,537
2 votes
2 answers
10k views

So, what I need is next: Create certifiactes for development, get one for the client and one for server Retrieve password through API that is encoded from client and decode it on server Now, I managed ...
Community's user avatar
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0 votes
1 answer
133 views

using (RSA rsa = RSA.Create()) { rsa.ImportFromPem(privateKeyString); byte[] dataToSign = Encoding.UTF8.GetBytes(signData); byte[] signedData = rsa.SignData(dataToSign, HashAlgorithmName....
Orgil's user avatar
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10 votes
1 answer
12k views

recently i got project need run it on .net core 1.1. i realize that RSACryptoServiceProvider is not exsit on .net core RSA class. after i search in stackoverflow only few result as below => How to ...
Community's user avatar
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6 votes
1 answer
12k views

So I've messed around a bit with .Net's RSACryptoServiceProvider and Bouncy Castle to be able to create RSA key pairs and later on X509 certificates. I'm just curious if anyone knows if there's any ...
Community's user avatar
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2 votes
2 answers
4k views

I'm searching for a python library that is capable if decrypting and encrypting RSA (RSA_PKCS1_PADDING to be precise) with a public key. I've aleready tried pycryptodome, cryptography and rsa and all ...
rundekugel's user avatar
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3 votes
3 answers
49k views

I have a pair of keys to epadmin on machine A. I copied them on machine B in home folder of epadmin via scp in folder .ssh command for access : ssh [email protected] [epadmin@3A1D .ssh]$ ls -la ...
Community's user avatar
  • 1
1 vote
1 answer
1k views

privateEncrypt() says "..., the padding property can be passed. Otherwise, this function uses RSA_PKCS1_PADDING." sign() says "padding Optional padding value for RSA, one of the ...
Sergey Kaunov's user avatar
  • 192
2 votes
2 answers
2k views

In Delphi 10.4 I am trying to encrypt string with RSA, using public key from certificate (*.cer). The problem is that, I do not know, how to pass this certificate to RSA function. I have feelings, ...
AmigoJack's user avatar
  • 6,422
4 votes
3 answers
13k views

How could you load a public or private key from a file, and then encrypt or decrypt data with it in Swift while using no libraries or APIs?
Rollersteaam's user avatar
  • 61
0 votes
0 answers
90 views

I have a web service that returns a Timestamp Token as a base64 string, I have this code in Java using BouncyCastle to parse, open and extract the date: String timestamp = "..."; byte[] ...
Alfredo Morales's user avatar
  • 143
3 votes
2 answers
3k views

In PHP, I want to sign some documents with a padding of PSS, and a digest of SHA512. According to the docs, at http://www.php.net/manual/en/function.openssl-sign.php, I can set the digest however I ...
gog's user avatar
  • 1,426
0 votes
0 answers
61 views

I'm building a Flutter app that needs to send user data (like name and street) to a Node.js backend server. Currently, the data is sent via URL like this: http://192.168.1.126:8080/save?name=toto&...
totoskiller's user avatar
  • 15
1 vote
1 answer
82 views

I am using python3-pycryptodome version 3.9.0-150200.9.1 on openSUSE Leap version 15.6. While using Crypto.PublicKey.RSA class, I noticed that generated RSA keys have some algorithmic inconsistency. ...
President James K. Polk's user avatar
  • 42.3k
0 votes
1 answer
2k views

When I use the RSA/ECB/OAEPPadding algorithm in the encryption method below, an error gets thrown in Android: Error:javax.crypto.IllegalBlockSizeException: error:04000072:RSA routines:OPENSSL_internal:...
Alex Zab's user avatar
  • 32
0 votes
1 answer
17k views

I have generated pem and csr files using the below command. openssl req -newkey rsa:2048 -keyout key.pem -out req.csr After this, I sent csr file to the authority and got p7b certificate. Now, I tried ...
Manuel Rubio's user avatar
  • 116
0 votes
0 answers
99 views

I'm using Java & Spring Boot for an endpoint which sole purpose is to create, sign and issue JWT. The library used for creating JWTs is java-jwt. I have a problem creating a com.auth0.jwt....
Wrapper's user avatar
  • 942
0 votes
1 answer
2k views

I created a custom RSA key pair just for test purposes in python. I want to add the private key and public key to a .pem file but I didnt find anything in my research. All i found is people generating ...
Topaco's user avatar
  • 50.5k
6 votes
2 answers
9k views

I'm trying to read RSA public key shown below, but I get an exception at line 6: java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: IOException: algid parse error, not a ...
Joe Rutter's user avatar
  • 1
24 votes
3 answers
8k views

On the one hand, I hear people saying that the two keys are totally interchangeable, the first one will decrypt what the second one encrypted. This makes me think that the two keys are interchangeable....
DVNO's user avatar
  • 173
0 votes
0 answers
74 views

I'm trying to make a server for a password manager I'm building, but the server seems to hang randomly and it seems to randomly throw rsa.pkcs1.DecryptionErrors randomly too. I did recently switch ...
SmallCoder12's user avatar
  • 49
0 votes
0 answers
92 views

Here is the class that am using ,based on the flow that I have ,the validation always fails and return false in the line boolean isValid = signature.verify(signatureBytes); LOG.info("Signature ...
Karthik's user avatar
  • 381
0 votes
2 answers
620 views

I have made some testing and it came out that RSA is lot slower than DSA. What is usual DSA time complexity? RSA[ms] DSA [ms] 1125 218 1KiB 1047 188 2KiB 594 17 4KiB 641 234 8KiB ...
DavidW's user avatar
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6 votes
1 answer
14k views

I want to generate the private key from a string(a .pem file) in Java. private static final String test = "-----BEGIN RSA PRIVATE KEY-----\n" + "...
Community's user avatar
  • 1
1 vote
1 answer
752 views

I'm building a secure WhatsApp-like messenger for me and my friends. It encrypts all messages with AES and then uses RSA to encrypt the random AES key, it's very similar to PGP. For the desktop client,...
Mark Rotteveel's user avatar
  • 110k
0 votes
0 answers
129 views

I am doing an OTA updater for an ESP32. I am using AWS Lambda to encrypt a presigned URL that is being generated for a certain element from an S3 bucket. I am first doing an AES encryption, and then ...
Topaco's user avatar
  • 50.5k
6 votes
2 answers
7k views

I have a private RSA key like – for example – this one: -----BEGIN RSA PRIVATE KEY----- MIIBOgIBAAJBAMPMNNpbZZddeT/GTjU0PWuuN9VEGpxXJTAkmZY02o8238fQ2ynt N40FVl08YksWBO/74XEjU30mAjuaz/...
RibomBalt's user avatar
  • 475
19 votes
3 answers
42k views

Why should I use the options, -t rsa, -b 4096, and -C "[email protected]" when creating an SSH key, as instructed by github? If I create an SSH key without these options, is it less secure? If so, ...
Yaroslav Voytovych's user avatar
  • 452
0 votes
0 answers
87 views

I am experimenting with developing rsa with flutter and nodejs. public.pem and private.pem are same for both. Both the code are working fine when run in same language. but when transmitting data over ...
President James K. Polk's user avatar
  • 42.3k
0 votes
0 answers
117 views

I have a TR34 sample enveloped data from X9 TR34–2012. I am trying to decrypt it, but I am not sure which part of the token contains encrypted ephemeral key and which exact rsa algorithm is used for ...
President James K. Polk's user avatar
  • 42.3k
-4 votes
2 answers
286 views

RSA , no doubt, has several applications and is very famous. And today we use 2048-bit RSA key for security purposes. Yet, I see several research papers implementing RSA algorithm with 32-bit key (or ...
The Amplitwist's user avatar
  • 259
7 votes
1 answer
23k views

I am trying to save a private key in a pem file, protected with a password. The problem is, the pem file is created and I can even open it with openssl but, no password is asked! Here is the code: ...
Robert's user avatar
  • 43.5k
4 votes
3 answers
10k views

Here is the code which is working fine when reading file from the txt but when i read it from the string i am getting the error here public string encrypt(string plainText,string PrivateKey) ...
jmozko's user avatar
  • 371
7 votes
2 answers
13k views

I have got an Angular + Net Core application with an (RSA + AES) encrypted connection. All requests from client are coming via POST. (You will be given an example below. The script provided below ...
jmozko's user avatar
  • 371
0 votes
0 answers
53 views

I'm working with a Thales payShield 10K and trying to use the EU command to translate a public key under new LMK. I currently have the key available in PEM, DER, and HEX formats. However, according to ...
MaXbeMan's user avatar
  • 33
2 votes
1 answer
4k views

Small RSA decryption question with Java please. I want to meet in a secret location with a friend of mine. As we do not want anyone to eavesdrop on the secret location, I generated a RSA key pair, a ...
agilgur5's user avatar
  • 2,092
-2 votes
1 answer
110 views

I want to protect a RSA private key stored in localStorage by wrapping it with a key derived from the user's password. However when unwrapping the key the error DOMException: An invalid or illegal ...
iKingNinja's user avatar
  • 410
1 vote
1 answer
90 views

I would like to add RSA encryption in my server (Python FastAPI) and my Android app. But the encryption didn't work as the way I expected. I already have AES-GCM encryption/decryption working between ...
kunteinzo's user avatar
  • 13
14 votes
4 answers
11k views

Is there a small library for RSA or DSA without any dependencies like GMP or OpenSSL? (Written in C or Asm)
rick-rick-rick's user avatar
  • 387
1 vote
1 answer
1k views

I have to create a Shell script that can decrypt a RSA key file that is encrypted with a specific .pem file. And then to decrypt .zip file with the AES key which I get from the RSA file once it is ...
U880D's user avatar
  • 12.8k

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