Update operating-system.md

windows/security/operating-system.md

@@ -25,7 +25,7 @@ Use the links in the following table to learn more about the operating system se
 | Security Measures | Features & Capabilities | Description |
 |:---|:---|
 | System security | Secure Boot and Trusted Boot  | Secure Boot and Trusted Boot help prevent malware and corrupted components from loading when a Windows 11 device is starting. Secure Boot starts with initial boot-up protection, and then Trusted Boot picks up the process. Together, Secure Boot and Trusted Boot help to ensure your Windows 11 system boots up safely and securely. <br/><br/>To learn more, see [Secure Boot and Trusted Boot](trusted-boot.md).    | 
-|   | [Cryptography and certificate management](cryptography-certificate-mgmt.md) |   |
+|   | Cryptography and certificate management | Cryptography uses code to convert data so that only a specific recipient can read it by using a key. Cryptography enforces privacy to prevent anyone except the intended recipient from reading data, integrity to ensure data is free of tampering, and authentication that verifies identity to ensure that communication is secure. The cryptography stack in Windows extends from the chip to the cloud enabling Windows, applications, and services protect system and user secrets. <br/><br/>Certificates are crucial to public key infrastructure (PKI) as they provide the means for safeguarding and authenticating information. Windows offers several APIs to operate and manage certificates.<br/><br/>To learn more, see [Cryptography and Certificate Management](cryptography-certificate-mgmt.md).   |
 |   | [Windows Security app](threat-protection/windows-defender-security-center/windows-defender-security-center.md) |  |
 | Encryption and data protection | [Encryption and data protection in Windows 11](encryption-data-protection.md) |  |
 |   | [Encryption](encryption-data-protection.md) |  |