CAMELLIA-256-ECB ENCRYPTION TOOL
Other Crypto Algorithms
AES-128-CBC AES-128-CBC-CTS AES-128-CBC-HMAC-SHA1 AES-128-CBC-HMAC-SHA256 AES-128-CCM AES-128-CFB AES-128-CFB1 AES-128-CFB8 AES-128-CTR AES-128-ECB AES-128-GCM AES-128-GCM-SIV AES-128-OCB AES-128-OFB AES-128-SIV AES-128-WRAP AES-128-WRAP-INV AES-128-WRAP-PAD AES-128-WRAP-PAD-INV AES-128-XTS AES-192-CBC AES-192-CBC-CTS AES-192-CCM AES-192-CFB AES-192-CFB1 AES-192-CFB8 AES-192-CTR AES-192-ECB AES-192-GCM AES-192-GCM-SIV AES-192-OCB AES-192-OFB AES-192-SIV AES-192-WRAP AES-192-WRAP-INV AES-192-WRAP-PAD AES-192-WRAP-PAD-INV AES-256-CBC AES-256-CBC-CTS AES-256-CBC-HMAC-SHA1 AES-256-CBC-HMAC-SHA256 AES-256-CCM AES-256-CFB AES-256-CFB1 AES-256-CFB8 AES-256-CTR AES-256-ECB AES-256-GCM AES-256-GCM-SIV AES-256-OCB AES-256-OFB AES-256-SIV AES-256-WRAP AES-256-WRAP-INV AES-256-WRAP-PAD AES-256-WRAP-PAD-INV AES-256-XTS ARIA-128-CBC ARIA-128-CCM ARIA-128-CFB ARIA-128-CFB1 ARIA-128-CFB8 ARIA-128-CTR ARIA-128-ECB ARIA-128-GCM ARIA-128-OFB ARIA-192-CBC ARIA-192-CCM ARIA-192-CFB ARIA-192-CFB1 ARIA-192-CFB8 ARIA-192-CTR ARIA-192-ECB ARIA-192-GCM ARIA-192-OFB ARIA-256-CBC ARIA-256-CCM ARIA-256-CFB ARIA-256-CFB1 ARIA-256-CFB8 ARIA-256-CTR ARIA-256-ECB ARIA-256-GCM ARIA-256-OFB CAMELLIA-128-CBC CAMELLIA-128-CBC-CTS CAMELLIA-128-CFB CAMELLIA-128-CFB1 CAMELLIA-128-CFB8 CAMELLIA-128-CTR CAMELLIA-128-ECB CAMELLIA-128-OFB CAMELLIA-192-CBC CAMELLIA-192-CBC-CTS CAMELLIA-192-CFB CAMELLIA-192-CFB1 CAMELLIA-192-CFB8 CAMELLIA-192-CTR CAMELLIA-192-ECB CAMELLIA-192-OFB CAMELLIA-256-CBC CAMELLIA-256-CBC-CTS CAMELLIA-256-CFB CAMELLIA-256-CFB1 CAMELLIA-256-CFB8 CAMELLIA-256-CTR CAMELLIA-256-ECB CAMELLIA-256-OFB CHACHA20 CHACHA20-POLY1305 DES-EDE-CBC DES-EDE-CFB DES-EDE-ECB DES-EDE-OFB DES-EDE3-CBC DES-EDE3-CFB DES-EDE3-CFB1 DES-EDE3-CFB8 DES-EDE3-ECB DES-EDE3-OFB DES3-WRAPThe Camellia-256-ECB algorithm is a symmetric key block cipher designed to provide high security for data encryption. It operates on fixed-size blocks of 128 bits, using a key length of 256 bits. The algorithm belongs to the Camellia family of ciphers, which are known for their balanced design between security, efficiency, and simplicity in both hardware and software implementations.
Key Features
- Block Size: 128 bits
- Key Size: 256 bits
- Mode: Electronic Codebook (ECB)
- Rounds: 24 rounds of Feistel-type transformations
Algorithm Structure
The Camellia-256 cipher uses a Feistel network structure with 24 rounds divided into 6 rounds per layer, incorporating FL and FL-1 functions to enhance diffusion and non-linearity. Each round uses a different subkey derived from the main 256-bit key through a key scheduling procedure, ensuring that each transformation is unique. The algorithm applies S-box substitutions and P-function linear transformations to scramble data across rounds, providing strong resistance against differential and linear cryptanalysis.
Key Scheduling
The key scheduling process of Camellia-256 generates 26 subkeys for encryption and decryption. The 256-bit main key is split and processed through a series of rotations, XOR operations, and non-linear functions to produce subkeys for each round. This procedure ensures that each round key is cryptographically independent, minimizing correlation between rounds and enhancing overall security.
Electronic Codebook (ECB) Mode
In ECB mode, the plaintext is divided into independent 128-bit blocks, and each block is encrypted separately using Camellia-256. This mode is simple to implement and allows parallel encryption of multiple blocks. However, ECB does not provide semantic security for identical plaintext blocks, as repeated blocks produce identical ciphertext blocks. It is recommended for scenarios where patterns in plaintext do not leak sensitive information.
Security and Performance
Camellia-256-ECB provides a high level of cryptographic security, suitable for applications requiring long-term data confidentiality. It is optimized for both software and hardware implementations, supporting efficient encryption and decryption on modern processors. The use of 256-bit keys ensures resistance against brute-force attacks, while the Feistel network and key scheduling mechanisms defend against standard cryptanalytic attacks.