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AEGIS: improve performance of AD absorption on x86_64

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No apparent regression on other platforms.

Adapted from libaegis.
This commit is contained in:
Frank Denis 2024-05-25 00:41:08 +02:00
parent 193cab86d3
commit a67325c42c
2 changed files with 40 additions and 4 deletions
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23
src/libsodium/crypto_aead/aegis128l/aegis128l_common.h
View File

@ -74,6 +74,19 @@ aegis128l_absorb(const uint8_t *const src, aes_block_t *const state)
aegis128l_update(state, msg0, msg1);
}
static inline void
aegis128l_absorb2(const uint8_t *const src, aes_block_t *const state)
{
aes_block_t msg0, msg1, msg2, msg3;
msg0 = AES_BLOCK_LOAD(src + 0 * AES_BLOCK_LENGTH);
msg1 = AES_BLOCK_LOAD(src + 1 * AES_BLOCK_LENGTH);
msg2 = AES_BLOCK_LOAD(src + 2 * AES_BLOCK_LENGTH);
msg3 = AES_BLOCK_LOAD(src + 3 * AES_BLOCK_LENGTH);
aegis128l_update(state, msg0, msg1);
aegis128l_update(state, msg2, msg3);
}
static void
aegis128l_enc(uint8_t *const dst, const uint8_t *const src, aes_block_t *const state)
{
@ -154,7 +167,10 @@ encrypt_detached(uint8_t *c, uint8_t *mac, size_t maclen, const uint8_t *m, size
aegis128l_init(k, npub, state);
for (i = 0; i + RATE <= adlen; i += RATE) {
for (i = 0; i + RATE * 2 <= adlen; i += RATE * 2) {
aegis128l_absorb2(ad + i, state);
}
for (; i + RATE <= adlen; i += RATE) {
aegis128l_absorb(ad + i, state);
}
if (adlen % RATE) {
@ -189,7 +205,10 @@ decrypt_detached(uint8_t *m, const uint8_t *c, size_t clen, const uint8_t *mac,
aegis128l_init(k, npub, state);
for (i = 0; i + RATE <= adlen; i += RATE) {
for (i = 0; i + RATE * 2 <= adlen; i += RATE * 2) {
aegis128l_absorb2(ad + i, state);
}
for (; i + RATE <= adlen; i += RATE) {
aegis128l_absorb(ad + i, state);
}
if (adlen % RATE) {

21
src/libsodium/crypto_aead/aegis256/aegis256_common.h
View File

@ -73,6 +73,17 @@ aegis256_absorb(const uint8_t *const src, aes_block_t *const state)
aegis256_update(state, msg);
}
static inline void
aegis256_absorb2(const uint8_t *const src, aes_block_t *const state)
{
aes_block_t msg, msg2;
msg = AES_BLOCK_LOAD(src + 0 * AES_BLOCK_LENGTH);
msg2 = AES_BLOCK_LOAD(src + 1 * AES_BLOCK_LENGTH);
aegis256_update(state, msg);
aegis256_update(state, msg2);
}
static void
aegis256_enc(uint8_t *const dst, const uint8_t *const src, aes_block_t *const state)
{
@ -139,7 +150,10 @@ encrypt_detached(uint8_t *c, uint8_t *mac, size_t maclen, const uint8_t *m, size
aegis256_init(k, npub, state);
for (i = 0; i + RATE <= adlen; i += RATE) {
for (i = 0; i + 2 * RATE <= adlen; i += 2 * RATE) {
aegis256_absorb2(ad + i, state);
}
for (; i + RATE <= adlen; i += RATE) {
aegis256_absorb(ad + i, state);
}
if (adlen % RATE) {
@ -174,7 +188,10 @@ decrypt_detached(uint8_t *m, const uint8_t *c, size_t clen, const uint8_t *mac,
aegis256_init(k, npub, state);
for (i = 0; i + RATE <= adlen; i += RATE) {
for (i = 0; i + 2 * RATE <= adlen; i += 2 * RATE) {
aegis256_absorb2(ad + i, state);
}
for (; i + RATE <= adlen; i += RATE) {
aegis256_absorb(ad + i, state);
}
if (adlen % RATE) {