In today’s digital landscape, ensuring the security and confidentiality of sensitive information is paramount. Cryptographic algorithms play a crucial role in achieving this goal by providing mechanisms for encryption and decryption. However, the protection of cryptographic keys, which are fundamental to the security of these algorithms, remains a significant challenge. This work enhances the security of cryptographic keys through the application of masking techniques. The study focuses on three prominent cryptographic algorithms, viz. RSA, AES, and DES. By leveraging masking techniques, which involve bitwise INVERT operations, the study explores methods to obfuscate cryptographic keys while preserving their usability for encryption and decryption processes. The findings underscore the potential of masking techniques to fortify cryptographic key management strategies, thereby enhancing overall security resilience against adversaries.