> For the complete documentation index, see [llms.txt](https://docs.editran.onesait.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.editran.onesait.com/documentacion-editran/ibm-editran-v5.3-iseries-en/nueva-funcionalidades/changes-in-onesait-editran-5.2.1-with-respect-to-onesait-editran-5.2./functionalities/evolution-to-more-secure-encryption-with-triple-des-and-aes-confidentiality-in-cryptography-version.md).

# Evolution to more secure encryption with Triple DES and AES confidentiality in cryptography version 3.0

The intention is to gradually evolve to more secure encryption with Triple DES and AES confidentiality. For this, when creating and modifying sessions with cryptographic versions 3.00 and 4.00, an algorithm of at least Triple DES will have to be used.

DES and double DES encryption will continue to work in existing sessions that are not modified


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