qsc_aes_gcm128_state Struct Reference

State structure for AES-based Galois Counter Mode (GCM-128). More...

#include <aes.h>

Data Fields
qsc_aes_state	cstate
uint8_t	C [QSC_AES_BLOCK_SIZE]
uint8_t	H [QSC_AES_BLOCK_SIZE]
uint8_t	J0 [QSC_AES_BLOCK_SIZE]
uint8_t	S [QSC_AES_BLOCK_SIZE]
uint64_t	aadlen
uint64_t	ctlen
bool	encrypt

Detailed Description

State structure for AES-based Galois Counter Mode (GCM-128).

Combines an AES-128 cipher context with Galois/Counter Mode to implement an AEAD scheme. The internal layout is identical to qsc_aes_gcm256_state; the sole distinction is that the cipher context is keyed with a 128-bit key.

See also

qsc_aes_gcm128_initialize, qsc_aes_gcm128_set_associated, qsc_aes_gcm128_encrypt, qsc_aes_gcm128_decrypt, qsc_aes_gcm128_transform, qsc_aes_gcm128_dispose

Field Documentation

aadlen

uint64_t aadlen

[uint64_t] Total AAD length in bits

C

uint8_t C[QSC_AES_BLOCK_SIZE]

uint8_t[QSC_AES_BLOCK_SIZE] Current counter block (inc32 of J0)

cstate

qsc_aes_state cstate

[struct] Underlying AES-128 cipher context

ctlen

uint64_t ctlen

[uint64_t] Total ciphertext length in bits

encrypt

bool encrypt

[bool] true when initialized for encryption, false for decryption

H

uint8_t H[QSC_AES_BLOCK_SIZE]

uint8_t[QSC_AES_BLOCK_SIZE] GHASH subkey H = AES(K, 0^128)

J0

uint8_t J0[QSC_AES_BLOCK_SIZE]

uint8_t[QSC_AES_BLOCK_SIZE] Pre-counter block derived from IV

S

uint8_t S[QSC_AES_BLOCK_SIZE]

uint8_t[QSC_AES_BLOCK_SIZE] Running GHASH accumulator

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The documentation for this struct was generated from the following file:

• C:/Users/stepp/Documents/Visual Studio 2022/Projects/C/QSC/QSC/aes.h