ARIA-128-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 ARIA-128-ECB algorithm is a symmetric block cipher that encrypts and decrypts data using a fixed block size of 128 bits and a key size of 128 bits. It is part of the ARIA family, designed to provide a balance between security and computational efficiency. ARIA uses a substitution-permutation network (SPN) structure, applying multiple rounds of substitution, diffusion, and key mixing to transform plaintext into ciphertext.
Key Schedule
The key schedule in ARIA-128 generates round keys from the original 128-bit encryption key. It uses a combination of bitwise rotations, XOR operations, and S-box transformations to produce a sequence of independent round keys. Each round key is applied in a specific round to provide nonlinearity and resistance against cryptanalysis.
Encryption Process
Encryption in ARIA-128-ECB operates on a single 128-bit block of plaintext. The process consists of multiple rounds, typically 12 for 128-bit keys. Each round applies a substitution layer using 8×8 S-boxes, a diffusion layer with linear transformations, and a key addition layer where the round key is XORed with the state. The final round modifies the sequence slightly by omitting the last diffusion step to ensure proper block transformation.
Electronic Codebook Mode (ECB)
When ARIA-128 is used in ECB mode, each 128-bit block is encrypted independently using the same key. This allows parallel processing of multiple blocks but does not provide semantic security for repeated plaintext blocks. Identical plaintext blocks result in identical ciphertext blocks, making patterns in the data potentially observable.
Decryption Process
Decryption reverses the encryption steps. It applies the round keys in reverse order, reverses the linear diffusion transformations, and substitutes using inverse S-boxes. The ECB mode allows decryption of each block independently, making the process straightforward and symmetric to the encryption steps.
Security Considerations
ARIA-128-ECB provides strong resistance against known cryptanalytic attacks due to its SPN structure and multiple rounds. However, ECB mode has inherent limitations: identical plaintext blocks yield identical ciphertext, which can expose patterns in the data. It is recommended to use a more secure mode of operation, such as CBC or CTR, when pattern protection is required.