Ok, so the problem is that you are converting the encrypted bytes to a hex string (using the asHex method) but are not converting the hex string back to a byte array correctly for decryption. You can’t use getBytes. You can use the following method to convert a hex string to a byte array: public … Read more
You can try the following: https://magenic.com/thinking/encrypting-configuration-sections-in-net In short – rename the app.config file to web.config – the schema is identical, so aspnet_regiis works. Rename back to app.config when finished.
Disclaimer: This answer was valid until ios 4.3.3 If data protection is turned on, a newly created file will have a nil NSFileProtectionKey by default. If data protection is turned off, a newly created file will have a NSFileProtectionNone NSFileProtectionKey by default. Thus, you could detect the presence of file protection with the following code: … Read more
You could put the password into a separate section and encrypt this section only. For example: <?xml version=”1.0″ encoding=”utf-8″ ?> <configuration> <configSections> <section name=”secureAppSettings” type=”System.Configuration.NameValueSectionHandler, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089″ /> </configSections> <appSettings> <add key=”Host” value=”www.foo.com” /> <add key=”Token” value=”qwerqwre” /> <add key=”AccountId” value=”123″ /> <add key=”DepartmentId” value=”456″ /> <add key=”SessionEmail” value=”foo@foo.com” /> <add key=”DefaultFolder” value=”789″ … 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
The root user on the host machine (where the docker daemon runs) has full access to all the processes running on the host. That means the person who controls the host machine can always get access to the RAM of the application as well as the file system. That makes it impossible to hide a … Read more
When you use a code like this: using (var rsa = new RSACryptoServiceProvider(1024)) { // Do something with the key… // Encrypt, export, etc. } .NET (actually Windows) stores your key in a persistent key container forever. The container is randomly generated by .NET This means: Any random RSA/DSA key you have EVER generated for … Read more
A cryptographically secure number random generator, as you might use for generating encryption keys, works by gathering entropy – that is, unpredictable input – from a source which other people can’t observe. For instance, /dev/random(4) on Linux collects information from the variation in timing of hardware interrupts from sources such as hard disks returning data, … Read more
As you can see from the other answers, having a unique IV per encrypted file is crucial, but why is that? First – let’s review why a unique IV per encrypted file is important. (Wikipedia on IV). The IV adds randomness to your start of your encryption process. When using a chained block encryption mode … Read more
now I want to encrypt it use openssl_encrypt, and I did not find des3-ecb in openssl_get_cipher_methods() list. It’s des-ede3. Symmetric encryption with a block cipher needs some kind of mode of operation. If you look through the list, you will see something like des-ede3, des-ede3-cbc, des-ede3-cfb and des-ede3-ofb. CBC, CFB and OFB are all named … Read more