Category:H04L9/40

• Section H: Electricity
• Class H04: Electric Communication Technique
• Subclass H04L: Transmission of Digital Information, e.g., Telephonic Communication
• Main Group H04L9/00: Arrangements for Secret or Secure Communication
• Subgroup H04L9/40: Cryptographic mechanisms using special properties of data handling systems, or for data security

The IPC classification "H04L9/40" falls under the category of electric communication technique, specifically in the subclass concerning transmission of digital information. This group is designated for cryptographic mechanisms or cryptographic arrangements for secret or secure communication. The "H04L9/40" classification is specifically focused on cryptographic mechanisms using special properties of data handling systems, or for data security, such as by encrypting or ciphering. This includes, but is not limited to, methods and devices for secure data transmission, encryption techniques, secure communication protocols, and security measures for protecting data integrity and confidentiality. The classification is a crucial area in the field of information security and plays a vital role in the development of secure digital communication systems.