Base64 encoding a string may seem like a straight-forward operation, but there are a couple of gotchas even when dealing with just simple ASCII strings. Avoid embedding a new line character into the encoding If you use the most straight forward method of Base64 encoding shown below, you have to remember that echo by default … Bash: avoiding newline artifacts when Base64 encoding a string
Although jwt.io has become a common online destination for decoding JWT, this can also be done locally using jq. # populate JWT variable JWT=… # decode with jq utility echo $JWT | jq -R ‘split(“.”) | .[0],.[1] | @base64d | fromjson’ Attribution of credit goes to this gist.
There are multiple options for creating a TLS secret using kustomize. One is to embed the certificate content as a base64 string directly in the data, the other is to use an external file. Below is an example kustomization.yaml file that serves as an entry point for both methods. — apiVersion: kustomize.config.k8s.io/v1beta1 kind: Kustomization resources: … Kubernetes: creating TLS secrets with kustomize using embedded or external content
If you need a way to simply encrypt and decrypt files or strings with a symmetric key (same password for encryption and decryption), openssl provides this functionality. Be sure to avoid weak ciphers such as 3DES, and employ salt as well as PBKDF2 iterations to reduce vulnerability to brute force attacks. Here is a simple … Linux: using openssl to encrypt and decrypt files and strings
With Ansible, it is possible to have a variable populated with either the content of a remote or local file. For a file on a remote host, you can use the ‘slurp‘ module to put the content into a register, but then you must base64 decode the content. – name: get content of remote file … Ansible: creating a variable from a remote or local file content
JAXB provides a framework for two-way binding between XML and Java structures, making it easy for developers to serialize and deserialize their XML into Java objects. Decorating a class with @XmlElement and @XmlAttribute annotations is all it usually takes to build a rich domain model from XML, but sometimes you get into a situation where … Java: Using XMLAdapter to process custom datatypes using JAXB