With the below code i am using to do get the parameters required for AES encryption: s_key is the file provided which contains the key that will be used to encrypt and decrypt How to segragate the Key and other parameters (IV and Salt) from ParametersWithIV and print to console?? Answer Passphrase and salt ca…
Tag: bouncycastle
Java AES Decryption with keyFile using BouncyCastle SSL
I am trying to write a Java code decrypt a file encrypted with AES256 using BouncyCastle compatible with OpenSSL decryption. s_key is the file provided which contains the key that will be used to encrypt and decrypt Steps to be done: 1 – Read the key file 2 – Use the key provided to decrypt file i…
Authorized responder for an OCSP response not validating with CertPathValidator
I’m trying to validate a certificate path with stapled OCSP checking through CertPathValidator. There might be some RFC-protocol that prohibits what I expect to validate just fine, but I’ve been unable to find this. Some paint art to describe relations between certificates discussed: overview When…
org.bouncycastle.cms.CMSException: content-type attribute value does not match eContentType
I’m currently building a TimeStamp server using BouncyCastle. Server is working well but on the client side, when I want to validate the TimeStampResponse received I’m getting the following error: org.bouncycastle.cms.CMSException: content-type attribute value does not match eContentType On the se…
java.lang.NoSuchMethodError: org.bouncycastle.asn1.x509.GeneralName.getDERObject()
I have done migrating project from itext2.1.7.jar to itext5.5.13.jar but While testing the pdf which are having signatures am getting the below error: java.lang.NoSuchMethodError: org.bouncycastle.asn1.x509.GeneralName.getDERObject() This is the method where I am getting error: In my class path I have placed:…
Bouncy Castle Java PGP encryption & decryption
I am trying to implement PGP encryption in Java using Bouncy Castle, also using some of the examples provided by them. But if I try and decrypt the message I just encrypted, it does not work. The keys and the decryption method seem to be ok, because I can encrypt using an external tool (link) and then success…
What is the recommended way of overriding version of a dependency from parent pom?
I want to override the bouncy castle version from the parent POM. I know we can add the dependency explicitly like so: But this is not the recommended way, the recommended way is adding the version in the properties part of the POM, but I can’t seem to find the name of the version property for Bouncy ca…
Message digest in a base64 encoded signed attributes DER structure
I have the following ASN1 ASN.1 dump and I understand that the OCTET STRING is the messageDigest(hash sha-256) of what I am trying to sign. Which in this case is a PDF document using PDFBOX the code I’m using to sign is the following I have also calculated the sha-256 of the document I am trying to sign…
How to create an OpenSSH compatible ED25519 key with Bouncy Castle?
How can you create an OpenSSH ED25519 private key that can be used for SSH? The goal would be to have a key file in the same format same like you would have in .ssh/id_ed25519 for your OpenSSH client. This is my current approach, which does not create a compatible: The output looks like this: .. but is unfort…
Encryption/Decryption with bouncycastle-java and RSAES-OAEP
I am not an expert with encryption, but i am trying to create an CMSEnvelopedDataGenerator with bouncycastle 1.67, where the session key is encrypted with RSAES-OAEP (1.2.840.113549.1.1.7) For now my code looks like this: It runs through but when i check it via openssl asn1parse, i see and then the hex dump. …