A team of Franco-Japanese researchers has recently achieved a significant breakthrough in the field of cybersecurity. By leveraging the properties of DNA, they have developed an unprecedented encryption method to secure sensitive communications, regardless of the distance between the parties. This innovation, still in the scientific validation phase, was tested for the first time under real conditions during an official visit to Japan.
A response to current limitations of encryption
Today, the majority of encryption systems rely on so-called “conditional” models. Their security largely depends on the ability of computers to resist decryption attempts, making them potentially vulnerable in the long term, especially in the face of advances in computing power.
There are methods known as “unconditional,” such as the One-Time Pad encryption, theoretically inviolable. However, their practical implementation poses a concrete problem: it is extremely difficult to generate and share perfectly random keys, especially over long distances.
It is precisely on this point that the new approach based on DNA aims to provide a solution.
DNA as a support for cryptographic keys
The principle is based on the use of synthetic DNA sequences. Composed of four chemical bases (A, T, C, and G), these molecules can be randomly generated and then duplicated identically.
Researchers have developed a system where two correspondents each have an identical copy of a set of DNA. Using sequencing technologies, these fragments are then translated into binary digital keys, used to encrypt and decrypt messages.
This method allows for the generation of long, perfectly random keys, and especially identical between the sender and the recipient, without being dependent on the distance that separates them.
Enhanced security against interceptions
One of the major advantages of this method lies in its robustness against interception attempts. The system is based on the fact that each DNA sequence exists only in two copies. Any attempt to copy or alter leaves detectable traces.
Thus, if a key is partially intercepted or manipulated, it becomes unusable. The correspondents can then immediately identify an anomaly and discontinue its usage.
This approach allows to achieve a theoretical level of security previously reserved for certain quantum technologies, while relying on mastered physico-chemical processes.
Long-term strategic perspectives
Beyond the technological demonstration, there are numerous potential applications. This method could be used to secure particularly sensitive diplomatic, military, or scientific communications.
It also opens up possibilities in extreme contexts, such as space communications, where the distance makes current systems more complex to implement.
Another notable advantage: DNA offers exceptional storage capacity. A few milligrams are enough to contain colossal volumes of data, with stability that can reach several millennia under good conditions.
An innovation still under evaluation
These works, carried out notably by the CNRS in collaboration with several French institutions (including IMT Atlantique) and Japanese institutions, are currently being pre-published and have not yet been validated by a peer-reviewed scientific journal.
However, they fit into a broader research dynamic on new forms of cryptography, at a time when the issues of digital sovereignty and data protection are becoming central.
If the technology delivers on its promises, it could well mark a breakthrough in the way sensitive communications are secured globally.
Illustration photo: DR
[cc] Article written by the editorial team of breizh-info.com and proofread and corrected (spelling, syntax) by artificial intelligence.
Breizh-info.com, 2026, free to copy and distribute under the mandatory mention and do-follow link to the original source.
