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Securing Microsoft 365

Reinforcing Data Security with Dual Encryption Keys. Empower your organization security with enhanced data protection using Double Key Encryption.

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Reinforcing Data Security with Dual Encryption Keys

Enhance Data Protection with Double Key Encryption for Microsoft 365

DuoKey for Office 365

Double Key Encryption for Microsoft 365 provides an enhanced level of data protection by leveraging two encryption keys to secure your sensitive documents. Unlike traditional encryption methods that rely on a single key, Double Key Encryption (DKE) adds an extra layer of security. One key is held by Microsoft, while the other key is exclusively managed by you, giving you complete control over your data.

This unique approach ensures that even if one key is compromised, the data remains encrypted and inaccessible. With Double Key Encryption, you can confidently safeguard your critical information and maintain compliance with stringent data privacy regulations.


There is a risk that rogue administrators working at cloud service providers access customer data or keys with the intent to misuse the data. With DuoKey you keep dual control of your encryption keys while protecting sensitive documents stored in the cloud.


The most significant threats to the exposure of sensitive or confidential data are employee mistakes. In contrast, the least significant threats to the exposure of sensitive or confidential data include government eavesdropping and lawful data requests.


Check who opened your sensitive content using our DuoKey track map. We provide real-time activity logs on all sensitive content while it is decrypted using our DKE service. If you want to block access to a domain or a specific user, you can leverage on conditional access control rules.

In detail

Double Key Encryption for Microsoft 365

Unparalleled Protection for Your Microsoft 365 Data with Double Key Encryption (DKE)

Enhance the security of your critical data in the Azure cloud with Double Key Encryption for Microsoft 365. DuoKey provides an additional layer of protection by encrypting all document encryption keys (DEK) with a root master key (MK) using our secure MPC algorithm. The MK, which is under the exclusive control of the customer, remains securely protected and never exists in plain text.

This means that the cloud provider has no access to the MK, ensuring the highest level of data confidentiality and control. With DuoKey's two-layer encryption approach, you can confidently safeguard your most sensitive content in the Azure cloud.

Our DKE module seamlessly integrates with leading HSM vendors like Securosys, Atos HSM, Thales, and more.

Always client-side encryption is performed

No third-party can ever access your data

Dedicated tenant and vault for storing your keys

Monitor who uses your keys


We are trusted by our partners

We appreciate DuoKey's cutting-edge approach to cloud security. Their double key encryption and advanced key management solutions not only enhance data protection but also ensure compliance. Utilizing advanced Multi Party Computation (MPC) protocols developed over decades by our team of acclaimed researchers, DuoKey delivers a superior level of cryptographic security, making it a reliable choice for safeguarding cloud applications and sensitive data.

Ahmet Tuncay - Former CEO, Sepior ApS

Blockdaemon Inc

DuoKey has revolutionized data security in our healthcare organization. Their encryption solutions provide robust protection for our sensitive health data, ensuring compliance and peace of mind.

CISO at Large Health NGO

Large Health NGO

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Take control of your encryption keys and protect sensitive data today!