Is it possible to convert a PKCS#8 encoded RSA private key into PKCS#1? I know this can be done easily via openssl, but can it be done in Java?

We have our custom JCE security provider that is using our smart cards to do the crypto operations. We have a problem when we try to use certain classes like Cipher, KeyAgreement, KeyGenerator, M...

During installation of Eclipse (using Eclipse Installer) I get asked "Do you trust these certificates?", listing two certificates for Bouncy Castle (one signed by Sun, one by Oracle) and one certif...

I'm having thar error when consuming an https webservice. I have that error when running a client in Java 6. I can't change the version of the Jdk. I tried with jdk8 and it works perfectly. What co...

I have a test which runs great on my development MacBook Pro, but fails to run in continuous integration TeamCity server. The error is following: java.security.InvalidKeyException: Illegal key si...

We have configured a Java product to use only FIPS-validated RSA JCE crypto providers. However, the product won't work when only the RSA libraries are listed in java.security. Therefore, something ...

I was trying to encrypt data using AES algorithm. However, with the following exception has occurred. java.security.NoSuchAlgorithmException: Cannot find any provider supporting AES/ECB/PKCS7PADD...

Currently running OSX El Capitan on a recently set up computer. I'm trying to set up Java's unlimited crypto policy which requires me to modify some files within my current jre, but I can't find th...

Look at the following line of java: Mac.getInstance("HmacSHA1"); If I put this in a simple test program, it runs without problems on my server. However, if I use this line in a container, I get ...

We have some Java library performing AES and RSA encryptions (using javax.crypto.Cipher). A new requirement came in to make the code FIPS 140-2 compliant. Reading some articles what I understood is...

Sun's PKCS11 JCE security provider is lacking some functionality we need. So I wrote an enhanced version of it using the original sources. Unfortunately the JCE infrastructure rejects the new prov...

I’m starting the development of an Android App using ECC Cryptography. I have seen that Android embeds some Cryptography (defined here https://developer.android.com/guide/topics/security/cryptograp...

Until Java 8, it was neccessary to download and install JCE in the JDK in order to use it. I do not find a downloadable extension for Java 11. Is there a way to check if it is configured by d...

I need a fixed length 64 Byte ECDSA signature with the NIST P-256 Curve. The implementation hast to use JCE. The following code sample can generate a signature and verify it. Provider provSign =...

The jar (bcprov-jdk16-145.jar) has been added to the project, Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()) has been added to the class, and BouncyCastleProvider.PR...

I'm running into an issue identical to Command line Jasypt client encryption 'Operation not possible' however that post is for a much older version of Java. I've checked the path listed fo...

By looking around here as well as the internet in general, I have found Bouncy Castle. I want to use Bouncy Castle (or some other freely available utility) to generate a SHA-256 Hash of a String in...

Java Cryptography Extension (JCE) can be found here, but that page says Current versions of the JDK do not require these policy files. They are provided here for use with older version of the JD...

I understand that the keystore would usually hold private/public keys and the trust store only public keys (and represents the list of trusted parties you intend to communicate with). Well, that's ...

I am trying to debug an issue with bouncy castle 1.47. I can find a debug jar for 'bcprov' but not for {org.bouncycastle:bcpkix-jdk15on:1.47:jar}. Is there any other place to download bcpkix-jdk15...

My application is acting as a switchboard to transfer very sensitive messages between two parties and I'm trying to figure out how I can do this without "looking" at the message they're trying to s...

I am getting the following exception when I try to open JCEKS type key store with with Oracle Java 8 JRE 172 on Windows. This worked fine with earlier versions of the JRE: INFO: ObjectInputFilter ...

I am now on making RSA message authentication software. The process is as follows: Sign the message by using A's private key (1024 bit) Verify the message by using A's public key (1024 bit) The...

I thought it was simple where JCA was a replacement for JCE. However writing some test code to get all the providers on my system showed this isn't the case. I noticed the following: Some algor...

I'm trying to securely store a password in a database and for that I chose to store its hash generated using the PBKDF2 function. I want to do this using the bouncy castle library but I don't know ...