ARIA-192-GCM 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-WRAP

Introduction

The ARIA-192-GCM algorithm is a symmetric key block cipher combined with a mode of operation known as Galois/Counter Mode (GCM). It is designed to provide both confidentiality and data integrity by encrypting plaintext into ciphertext while simultaneously generating an authentication tag. ARIA operates on fixed 128-bit blocks and supports key sizes of 128, 192, and 256 bits, with 192-bit keys providing a balance between security and performance.

Key Schedule

The key schedule for ARIA-192 expands the 192-bit input key into multiple round keys used in the encryption and decryption processes. It uses substitution and permutation operations across 12 rounds to generate unique round keys. Each round key is applied sequentially to transform the plaintext block into ciphertext, ensuring resistance against linear and differential cryptanalysis.

Encryption Process

ARIA-192-GCM uses a combination of substitution layers (S-boxes), diffusion layers (linear transformations), and key mixing for each round. Each plaintext block undergoes a sequence of transformations where non-linear substitutions replace bytes according to the S-box, followed by linear transformations that diffuse the byte values across the block. The round key is XORed with the block in every round, ensuring that each output block depends on the key and previous transformations.

Galois/Counter Mode (GCM)

GCM extends ARIA-192 to provide authenticated encryption. It combines the counter mode of encryption with a Galois field multiplication for authentication. A unique initialization vector (IV) is used for each message, generating a counter sequence that is encrypted with ARIA-192. The resulting ciphertext blocks are XORed with the plaintext blocks. Simultaneously, GCM computes an authentication tag over both the ciphertext and any additional authenticated data (AAD) using polynomial multiplication in the Galois field. This tag ensures integrity and authenticity of the encrypted data.

Security Properties

ARIA-192-GCM provides strong resistance against common cryptanalytic attacks. The 192-bit key length offers a high level of brute-force security, while the GCM mode ensures that any modification to the ciphertext or AAD can be detected through the authentication tag. Replay attacks are mitigated by requiring a unique IV for each encryption operation. The algorithm maintains high performance on both software and hardware implementations due to its efficient block and counter operations.

Implementation Considerations

Secure implementation of ARIA-192-GCM requires careful management of keys and IVs. IV reuse with the same key can compromise both confidentiality and integrity. Side-channel attacks must be mitigated using constant-time operations where possible. The algorithm can be parallelized for faster processing, and its structure allows for hardware acceleration, making it suitable for high-speed network encryption and secure storage systems.

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