Camellia Encryption

Camellia is a symmetric key block cipher with a block size of 128 bits and key sizes of 128, 192, or 256 bits.

Key Generation

Generate a secure key and initialization vector (IV) for Camellia encryption

Encrypt File

Upload a file and encrypt it with Camellia

Decrypt File

Upload an encrypted file and decrypt it with Camellia

About Camellia Encryption

Camellia is a symmetric key block cipher developed jointly by Mitsubishi Electric and NTT of Japan. It was designed to provide high security and performance across a wide range of platforms.

Key Features:
  • Block Size: 128 bits
  • Key Sizes: 128, 192, or 256 bits
  • Structure: Feistel network with 18 rounds (128-bit keys) or 24 rounds (192/256-bit keys)
  • Security: Designed to withstand all known cryptanalytic attacks
  • Performance: Optimized for both hardware and software implementations
How it Works:

Camellia uses a Feistel structure with additional input/output transformations. The algorithm includes:

  • Key scheduling to generate subkeys from the main key
  • Initial and final key whitening
  • F-functions that use S-boxes and P-functions for confusion and diffusion
  • FL and FL⁻¹ functions inserted every 6 rounds to provide non-regularity
Security and Standardization:

Camellia has been evaluated and recommended by several standardization organizations:

  • Selected as a recommended cipher by the EU's NESSIE project
  • Approved for use in ISO/IEC 18033-3 international standard
  • Included in the IETF's TLS (Transport Layer Security) protocol
  • Approved for Japanese government use (CRYPTREC)
Note: Camellia offers security comparable to AES while providing an alternative algorithm design. It's particularly popular in Japan and other Asian countries.