x509

问题 Possible Duplicate: How to get .pem file from .key and .crt files? How can I convert .crt to .pem? 回答1: You can do this conversion with the OpenSSL library http://www.openssl.org/ Windows binaries can be found here: http://www.slproweb.com/products/Win32OpenSSL.html Once you have the library installed, the command you need to issue is: openssl x509 -in mycert.crt -out mycert.pem -outform PEM 回答2: I found the OpenSSL answer given above didn't work for me, but the following did, working with a

问题 How can I transform between the two styles of public key format, one format is: -----BEGIN PUBLIC KEY----- ... -----END PUBLIC KEY----- the other format is: -----BEGIN RSA PUBLIC KEY----- ... -----END RSA PUBLIC KEY----- for example I generated id_rsa/id_rsa.pub pair using ssh-keygen command, I calculated the public key from id_rsa using: openssl rsa -in id_rsa -pubout -out pub2 then again I calculated the public key from id_rsa.pub using : ssh-keygen -f id_rsa.pub -e -m pem > pub1 the

问题 I am using a SslServerSocket and client certificates and want to extract the CN from the SubjectDN from the client\'s X509Certificate . At the moment I call cert.getSubjectX500Principal().getName() but this of course gives me the total formatted DN of the client. For some reason I am just interested in the CN=theclient part of the DN. Is there a way to extract this part of the DN without parsing the String myself? 回答1: Here's some code for the new non-deprecated BouncyCastle API. You'll need

问题 I am writing a small piece of code which reads public and private key stored in .pem file. I am using the following commands to generate the keys. Below command to generate pair of key. $openssl genrsa -out mykey.pem 2048 This command to generate the private key $openssl pkcs8 -topk8 -inform PEM -outform PEM -in mykey.pem \\ -out private_key.pem -nocrypt and this command to get the public key. $ openssl rsa -in mykey.pem -pubout -outform DER -out public_key.der I have written two methods

问题 I have a private key file (PEM BASE64 encoded). I want to use it else where to decrypt some other data.Using Java i tried to read the file and decode the BASE64 encoded data in it... This is the code snippet which i tried.... import java.io.*; import java.nio.ByteBuffer; import java.security.*; import java.security.spec.PKCS8EncodedKeySpec; import com.ibm.crypto.fips.provider.RSAPrivateKey; import com.ibm.misc.BASE64Decoder; public class GetPrivateKey { public static RSAPrivateKey get()