Integrity check, content validation and encryption of files over ICS FTP adapter Mani Krishnan

February 12, 2018 Leave a comment

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Oracle Integration Cloud Service (ICS), an industry-leading iPaaS offering, provides rich orchestration and mapping capabilities over FTP connections.   ICS FTP adapter supports connections over secure or non-secure channels.  Files can be transferred and processed by ICS without validating content upon transfer, which is the default behavior.  Files transferred over secured FTP benefit from inherent integrity checks built into the SFTP protocol.  For more information on ICS FTP adapter, see the link to a guide in references section.

Some users might have advanced requirements to validate content of the files during transfer or check for integrity of file explicitly. In this article, let’s take a look at steps to enable content validation against a schema during transfer, to perform integrity checks using MD5 checksum and to implement PGP encryption to secure files over secure or plain FTP connections.

Note that code archives provided with this article do not come with warranty from Oracle. Use discretion and additional testing to reuse code for production. Instructions in this article are applicable to release 17.1.3 of ICS.

Main article

This article is split into three sections, in order to keep them easier to follow. Click on one of the titles below to jump to a section.

Validating MD5 checksum of content

Validating content against a schema

PGP Encryption/Decryption of content

Validating MD5 checksum of content

Some integration use cases might require that the data file’s integrity be verified after transfer and before further processing.  This could be achieved by storing MD5 checksum of the original content, transfer it along with the file, compute checksum after transfer and compare with the checksum provided along with the file.  If they match, then content has not been altered or corrupt during or after transfer.

In the sample orchestration, a data file and a file containing its MD5 checksum are in a .zip file. ICS computes checksum upon unpacking files into ICS.  The checksum computed at source is compared with the checksum of the data file provided with file listing. If they match, orchestration proceeds with further processing. Read the complete article here.

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Unknown's avatarAbout Jürgen Kress
As a middleware expert Jürgen works at Oracle EMEA Alliances and Channels, responsible for Oracle’s EMEA Fusion Middleware partner business. He is the founder of the Oracle SOA & BPM and the WebLogic Partner Communities and the global Oracle Partner Advisory Councils. With more than 5000 members from all over the world the Middleware Partner Community is the most successful and active community at Oracle. Jürgen manages the community with monthly newsletters, webcasts and conferences. He hosts his annual Fusion Middleware Partner Community Forums and the Fusion Middleware Summer Camps, where more than 200 partners get product updates, roadmap insights and hands-on trainings. Supplemented by many web 2.0 tools like twitter, discussion forums, online communities, blogs and wikis. For the SOA & Cloud Symposium by Thomas Erl, Jürgen is a member of the steering board. He is also a frequent speaker at conferences like the SOA & BPM Integration Days, JAX, UKOUG, OUGN, or OOP.

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