![]() The key is encrypted with AES (bigger size 256) and a password.įor easier description, we pass the password in plaintext, which is a unsafe. We create an RSA key with bigger size (4096) Openssl genpkey -algorithm RSA -pkeyopt rsa_keygen_bits:4096 -out encryPrivKey.pem -aes-256-cbc -pass pass:abcdĪbove command uses two safe and one unsafe options: However, today we create a private key with encryption, for the sake of security: This would be the simple command to generate a private key with RSA algorithm: Usually, in our tutorials we prefer short commands, for easier understanding. However, let's go through the complicated steps, using OpenSSL 1.1 1.1. That's enough for following this tutorial. Go to CPI Keystore, press “Create -> Key Pair” and enter some data There are multiple possibilities for creating a key pair. This is just a simplified tutorial to get everybody started. This blog post is not an official recommendation, this is not safe and not ready to be pasted into productive environment. In this tutorial, we manually generate RSA key pair with big key size and encrypted private key.īoth settings add more safety and doesn't cause complexity in the Groovy script. However, some older legacy algorithms are supported, too, in case they are required.ĪES symmetric cipher with GCM operation mode. The spec clearly recommends the below algorithms, so we use them in our sample code. Provide the required symmetric and asymmetric keys.Ĭhoose the XML node that should be encrypted. It is also aware of the algorithms that are supported in the specification.Ĭompose the additional xml tree, using the objects which are offered in the library. This means it is aware of the XML structure that is defined in the standard. ![]() In the Groovy script, we’re using the Apache Santuario library, which provides an implementation of the “XML Encryption” standard. but I believe it makes the tutorial a little bit more comprehensive, to see this node in the result.īelow screenshot shows the payload before and after the encryption: It might be more safe to hide even the node name. We want to encrypt the number of the credit card. We’re keeping things as simple as possible, so we’re using this simple sample payload: ![]() This new XML tree starts with the top-level node. The standard defines an additional XML tree that is inserted in the original document, replacing the sensitive content. The sub-content of a specific node of the XML messageĪ specific node, means the node itself plus its content The “XML Encryption” standard allows to encrypt: To prove that the new XML payload, which contains encrypted parts, can be decrypted, we add another Groovy script. This is possible thanks to the “XML Encryption” standard. In a Groovy script, we encrypt only the secret credit card number. To make things easier, we hard-code the sample xml payload in the iFlow. In our Cloud Integration scenario, a sales order XML payload must be encrypted because it contains sensitive information (CreditCard number). IntroductionĪfter going through the previous blog post, we’re well prepared for the hands-on tutorial in this post. Understanding the "XML Encryption" standard is not difficult when using the previous blog postįor remaining open questions I recommend the Security Glossary. While not required, it is an advantage to have maven installed. To follow this tutorial, access to a Cloud Integration tenant is required, as well as basic knowledge about creating iFlows. Usage is not mandatory, Keys can be generated in any other way. This tutorial uses OpenSSL for creating a key pair and certificate. The present blog post shows how it can be achieved in a Groovy script.Īppendix 2: Sample Groovy Script for EncryptionĪppendix 3: Sample Groovy Script for Decryption This standard provides some benefits and flexibility for xml content. SAP Cloud Integration doesn’t offer an "encryptor" step for encrypting XML content according to the " XML Encryption" standard.
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