There are a couple ways to do this. First, instead of going into openssl command prompt mode, just enter everything on one command line from the Windows prompt: E:\> openssl x509 -pubkey -noout -in cert.pem > pubkey.pem If for some reason, you have to use the openssl command prompt, just enter everything up to the … Read more
No need to compile stuff. You can do the same with ssh-keygen: ssh-keygen -f pub1key.pub -i will read the public key in openssl format from pub1key.pub and output it in OpenSSH format. Note: In some cases you will need to specify the input format: ssh-keygen -f pub1key.pub -i -m PKCS8 From the ssh-keygen docs (From … Read more
You are claiming your raw key is in OpenSSL’s DER format, which it isn’t. Also you are claming a private key is a public key, which it isn’t, and claiming it’s password-encrypted which is wrong either way: public keys are never encrypted and private keys in OpenSSL’s ‘traditional’ aka ‘legacy’ algorithm-specific DER formats (for ECC, … Read more
You don’t have to downgrade OpenSSL. With the introduction of openssl version 1.1.1 in Debian the defaults are set to more secure values by default. This is done in the /etc/ssl/openssl.cnf config file. At the end of the file there is: [system_default_sect] MinProtocol = TLSv1.2 CipherString = DEFAULT@SECLEVEL=2 Debian now require as minimum the TLS … Read more
If you don’t use a passphrase, then the private key is not encrypted with any symmetric cipher – it is output completely unprotected. You can generate a keypair, supplying the password on the command-line using an invocation like (in this case, the password is foobar): openssl genrsa -aes128 -passout pass:foobar 3072 However, note that this … Read more
openssl rsa -in privkey.pem -pubout > key.pub That writes the public key to key.pub
In practice, the most common reason for this happening seems to be that the .rnd file in your home directory is owned by root rather than your account. The quick fix: sudo rm ~/.rnd For more information, here’s the entry from the OpenSSL FAQ: Sometimes the openssl command line utility does not abort with a … Read more
Try using following command. I haven’t tried it but I think it should work. openssl pkcs8 -topk8 -inform PEM -outform DER -in filename -out filename -nocrypt
From verify documentation: If a certificate is found which is its own issuer it is assumed to be the root CA. In other words, root CA needs to be self signed for verify to work. This is why your second command didn’t work. Try this instead: openssl verify -CAfile RootCert.pem -untrusted Intermediate.pem UserCert.pem It will … Read more
I realize that this is a very late (and long) answer. But considering how well this question seems to rank in search engine results, I figured it might be worth writing a decent answer for. A lot of what you will read below is borrowed from this demo and the OpenSSL docs. The code below … Read more