ARIA - CBC

ARIA in CBC (Cipher Block Chaining) mode: each plaintext block is XORed with the previous ciphertext (or IV for the first block), then encrypted. Same semantics and IV rules as AES CBC—use a unique IV per encryption (e.g. new IV per packet or message).

API

noxtls_aria_encrypt_cbc

noxtls_return_t noxtls_aria_encrypt_cbc(const uint8_t* key, const uint8_t* data, uint32_t data_len, const uint8_t* iv, uint8_t* output, noxtls_aria_type_t type);

Encrypts data in ARIA CBC mode. IV must be 16 bytes and unique per encryption.

Parameters: key — encryption key; data — plaintext; data_len — length (multiple of 16); iv — 16-byte IV (unique per encryption); output — ciphertext buffer; type — ARIA key type.

Returns: noxtls_return_t: NOXTLS_RETURN_SUCCESS on success; otherwise a specific return code.

noxtls_aria_decrypt_cbc

noxtls_return_t noxtls_aria_decrypt_cbc(const uint8_t* key, const uint8_t* data, uint32_t data_len, const uint8_t* iv, uint8_t* output, noxtls_aria_type_t type);

Decrypts data in ARIA CBC mode. Use the same IV that was used for encryption.

Parameters: key — decryption key; data — ciphertext; data_len — length (multiple of 16); iv — 16-byte IV used for this ciphertext; output — plaintext buffer; type — ARIA key type.

Returns: noxtls_return_t: NOXTLS_RETURN_SUCCESS on success; otherwise a specific return code.