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Merge pull request #10825 from SparkiDev/aes_x64_perf_1
AES Intel x64: improve performance
This commit is contained in:
David Garske
GitHub
+56
-30
@@ -839,9 +839,12 @@ block cipher mechanism that uses n-bit binary string parameter key with 128-bits
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#elif WC_VAES_MIN_BLOCKS < 1
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#error Invalid WC_VAES_MIN_BLOCKS
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#endif
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/* CFB/ECB: wide ECB setup (key broadcast) doesn't pay off below this. */
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/* ECB/CBC/CTR/XTS: the wide ladder handles 2+ blocks in parallel and
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* only caches round keys once it pays off (>= 32B), so the wide path
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* beats the single-block AES-NI fallback from 2 blocks up; a lone block
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* stays on AES-NI. (Measured +8..+58% at 2-6 blocks on Zen5.) */
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#ifndef WC_VAES_ECB_MIN_BLOCKS
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#define WC_VAES_ECB_MIN_BLOCKS WC_VAES_MIN_BLOCKS
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#define WC_VAES_ECB_MIN_BLOCKS 2
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#elif WC_VAES_ECB_MIN_BLOCKS < 1
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#error Invalid WC_VAES_ECB_MIN_BLOCKS
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#endif
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@@ -15587,23 +15590,52 @@ static WARN_UNUSED_RESULT int AesCfbDecrypt_C(Aes* aes, byte* out,
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#ifndef WOLFSSL_SMALL_STACK
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ALIGN16 byte tmp[WC_AES_CFB_DEC_BUF_BLOCKS * WC_AES_BLOCK_SIZE];
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#endif
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while (sz >= 2 * WC_AES_BLOCK_SIZE) {
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word32 blocks = sz / WC_AES_BLOCK_SIZE;
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word32 nbytes;
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if (blocks > WC_AES_CFB_DEC_BUF_BLOCKS)
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blocks = WC_AES_CFB_DEC_BUF_BLOCKS;
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nbytes = blocks * WC_AES_BLOCK_SIZE;
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XMEMCPY(tmp, aes->reg, WC_AES_BLOCK_SIZE);
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XMEMCPY(tmp + WC_AES_BLOCK_SIZE, in, nbytes - WC_AES_BLOCK_SIZE);
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XMEMCPY(aes->reg, in + nbytes - WC_AES_BLOCK_SIZE, WC_AES_BLOCK_SIZE);
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ret = wc_AesEcbEncrypt(aes, tmp, tmp, nbytes);
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if (ret != 0) {
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break;
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if (sz >= 2 * WC_AES_BLOCK_SIZE) {
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/* CFB-decrypt keystream block i is E(C_{i-1}): block 0 uses the
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* feedback register, block i>=1 uses the previous cipher block. So
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* ECB the ciphertext straight out of 'in' (no shift-copy) to get
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* E(C_0..C_{n-1}), XOR block i with the (i-1)th ECB output, and
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* carry E(C_{n-1}) as the next chunk's block-0 keystream - E(reg)
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* is computed only once here. */
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ALIGN16 byte ks[WC_AES_BLOCK_SIZE];
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ret = AesEncrypt_preFetchOpt(aes, (byte*)aes->reg, ks,
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&did_prefetches);
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while ((ret == 0) && (sz >= 2 * WC_AES_BLOCK_SIZE)) {
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word32 blocks = sz / WC_AES_BLOCK_SIZE;
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word32 nbytes;
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if (blocks > WC_AES_CFB_DEC_BUF_BLOCKS)
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blocks = WC_AES_CFB_DEC_BUF_BLOCKS;
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nbytes = blocks * WC_AES_BLOCK_SIZE;
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/* tmp[i] = E(C_i), read directly from the input. Already inside
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* VECTOR_REGISTERS_PUSH, so use the inner ECB (no nested
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* save/restore or re-dispatch) where available. */
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#if defined(WOLFSSL_AESNI) && defined(WOLFSSL_X86_64_BUILD)
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if (aes->use_aesni) {
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AesEcbEncryptBlocks(in, tmp, nbytes, (byte*)aes->key,
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(int)aes->rounds);
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}
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else
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#endif
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{
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ret = wc_AesEcbEncrypt(aes, tmp, in, nbytes);
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if (ret != 0)
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break;
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}
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/* Feedback for the tail = last cipher block; save it before the
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* XOR can overwrite 'in' (in == out case). */
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XMEMCPY((byte*)aes->reg, in + nbytes - WC_AES_BLOCK_SIZE,
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WC_AES_BLOCK_SIZE);
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/* P_0 = C_0 ^ E(feedback); P_i = C_i ^ E(C_{i-1}) =
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* C_i ^ tmp[i-1]. */
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xorbufout(out, in, ks, WC_AES_BLOCK_SIZE);
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xorbufout(out + WC_AES_BLOCK_SIZE, in + WC_AES_BLOCK_SIZE, tmp,
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nbytes - WC_AES_BLOCK_SIZE);
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/* Carry E(last cipher block) as the next chunk's block-0 KS. */
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XMEMCPY(ks, tmp + nbytes - WC_AES_BLOCK_SIZE, WC_AES_BLOCK_SIZE);
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out += nbytes;
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in += nbytes;
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sz -= nbytes;
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}
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xorbufout(out, in, tmp, nbytes);
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out += nbytes;
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in += nbytes;
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sz -= nbytes;
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}
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}
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#endif
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@@ -16903,8 +16935,7 @@ int wc_AesXtsEncrypt(XtsAes* xaes, byte* out, const byte* in, word32 sz,
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if (aes->use_aesni) {
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SAVE_VECTOR_REGISTERS(return _svr_ret;);
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#if defined(HAVE_INTEL_AVX512)
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if ((sz >= WC_VAES_ECB_MIN_BLOCKS * WC_AES_BLOCK_SIZE) &&
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IS_INTEL_AVX512(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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if (IS_INTEL_AVX512(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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AES_XTS_encrypt_avx512(in, out, sz, i,
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(const byte*)aes->key,
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(const byte*)xaes->tweak.key,
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@@ -16914,8 +16945,7 @@ int wc_AesXtsEncrypt(XtsAes* xaes, byte* out, const byte* in, word32 sz,
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else
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#endif
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#if defined(HAVE_INTEL_VAES)
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if ((sz >= WC_VAES_ECB_MIN_BLOCKS * WC_AES_BLOCK_SIZE) &&
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IS_INTEL_AVX2(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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if (IS_INTEL_AVX2(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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AES_XTS_encrypt_vaes(in, out, sz, i,
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(const byte*)aes->key,
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(const byte*)xaes->tweak.key,
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@@ -17140,8 +17170,7 @@ static int AesXtsEncryptUpdate(XtsAes* xaes, byte* out, const byte* in, word32 s
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if (aes->use_aesni) {
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SAVE_VECTOR_REGISTERS(return _svr_ret;);
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#if defined(HAVE_INTEL_AVX512)
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if ((sz >= WC_VAES_ECB_MIN_BLOCKS * WC_AES_BLOCK_SIZE) &&
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IS_INTEL_AVX512(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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if (IS_INTEL_AVX512(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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AES_XTS_encrypt_update_avx512(in, out, sz,
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(const byte*)aes->key,
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stream->tweak_block,
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@@ -17445,8 +17474,7 @@ int wc_AesXtsDecrypt(XtsAes* xaes, byte* out, const byte* in, word32 sz,
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if (aes->use_aesni) {
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SAVE_VECTOR_REGISTERS(return _svr_ret;);
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#if defined(HAVE_INTEL_AVX512)
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if ((sz >= WC_VAES_ECB_MIN_BLOCKS * WC_AES_BLOCK_SIZE) &&
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IS_INTEL_AVX512(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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if (IS_INTEL_AVX512(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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AES_XTS_decrypt_avx512(in, out, sz, i,
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(const byte*)aes->key,
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(const byte*)xaes->tweak.key,
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@@ -17676,8 +17704,7 @@ static int AesXtsDecryptUpdate(XtsAes* xaes, byte* out, const byte* in, word32 s
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if (aes->use_aesni) {
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SAVE_VECTOR_REGISTERS(return _svr_ret;);
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#if defined(HAVE_INTEL_AVX512)
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if ((sz >= WC_VAES_ECB_MIN_BLOCKS * WC_AES_BLOCK_SIZE) &&
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IS_INTEL_AVX512(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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if (IS_INTEL_AVX512(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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AES_XTS_decrypt_update_avx512(in, out, sz,
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(const byte*)aes->key,
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stream->tweak_block,
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@@ -17687,8 +17714,7 @@ static int AesXtsDecryptUpdate(XtsAes* xaes, byte* out, const byte* in, word32 s
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else
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#endif
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#if defined(HAVE_INTEL_VAES)
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if ((sz >= WC_VAES_ECB_MIN_BLOCKS * WC_AES_BLOCK_SIZE) &&
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IS_INTEL_AVX2(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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if (IS_INTEL_AVX2(intel_flags) && IS_INTEL_VAES(intel_flags)) {
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AES_XTS_decrypt_update_vaes(in, out, sz,
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(const byte*)aes->key,
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stream->tweak_block,
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+3639
-137
File diff suppressed because it is too large
Load Diff
+3802
-268
File diff suppressed because it is too large
Load Diff
+884
-193
File diff suppressed because it is too large
Load Diff
+888
-195
File diff suppressed because it is too large
Load Diff
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