Yes, you need all of these things. Salt (and an “iteration count”) is used to derive a key from the password. Refer to PKCS #5 for more information. The salt and iteration count used for key derivation do not have to be secret. The salt should be unpredictable, however, and is best chosen randomly. CBC … Read more
In reply to Thomas’s answer: For each site, an SSL certificate has a direct cost. We have a dev, qa, and prod environment and thus that is three certificates that are needed for each site Hardly true. You don’t need to have every single dev and qa behind SSL with valid, current certificates. You — … Read more
There is no Null Key Encryption. It is just plain fiction. The RFC you linked is a… fun RFC? The Null Algorithm described there is indeed a very very powerful algorithm. It encrypts your plaintext Hello World To the ciphertext Hello World I heavily doubt this algorithm will ever be broken 🙂
There is no difference in the security provided, but because of the way compression algorithms work, you are probably going to get better compression if you compress first then encrypt. Compression algorithms exploit statistical redundancies (such as those that exist in natural language or in many file formats) in the data which should be eliminated … Read more
Using this command I was able to generate the .pem with the contents of the public key. openssl x509 -inform der -in certificate.cer -pubkey -noout > certificate_publickey.pem Which produces: —–BEGIN PUBLIC KEY—– MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCsM+whXrxmbCkPfkwY2EehYpIp *blah blah blah blah* —–END PUBLIC KEY—–
.pem, .cer and .der are all file extensions for files that may contain a X.509 v3 certificate. The .der extension DER is the method of encoding the data that makes up the certificate. DER itself could represent any kind of data, but usually it describes an encoded certificate or a CMS container. CMS is described … Read more
Your question is really “How do I encrypt to a key without gpg balking at the fact that the key is untrusted?” One answer is you could sign the key. gpg –edit-key YOUR_RECIPIENT sign yes save The other is you could tell gpg to go ahead and trust. gpg –encrypt –recipient YOUR_RECIPIENT –trust-model always YOUR_FILE
Encryption takes a plain text and converts it to an encrypted text using a key and an encryption algorithm. The resulting encrypted text can later be decrypted (by using the same key and algorithm). A digest takes a plain text and generates a hashcode which can be used to verify if the plain text is … Read more
JWT (RFC7519) is just a compact way to safely transmit claims from an issuer to the audience over HTTP. JWT can be: signed (JWS – RFC7515) encrypted (JWE – RFC7516) signed then encrypted (this order is highly recommended). The whole JWS is the payload of the JWE encrypted then signed. It makes sense to encrypt … Read more