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From 98da8a58f964e279decc1bbbe8f07d807de05f7f Mon Sep 17 00:00:00 2001
From: Daniel Hu <Daniel.Hu@arm.com>
Date: Wed, 2 Mar 2022 12:55:39 +0000
Subject: [PATCH 06/13] Further acceleration for SM4-GCM on ARM
This patch will allow the SM4-GCM function to leverage the SM4
high-performance CTR crypto interface already implemented for ARM,
which is faster than current single block cipher routine used
for GCM
It does not address the acceleration of GHASH function of GCM,
which can be a future task, still we can see immediate uplift of
performance (up to 4X)
Before this patch:
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes 16384 bytes
SM4-GCM 186432.92k 394234.05k 587916.46k 639365.12k 648486.91k 652924.25k
After the patch:
SM4-GCM 193924.87k 860940.35k 1696083.71k 2302548.31k 2580411.73k 2607398.91k
Signed-off-by: Daniel Hu <Daniel.Hu@arm.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17814)
---
.../ciphers/cipher_sm4_gcm_hw.c | 25 ++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/providers/implementations/ciphers/cipher_sm4_gcm_hw.c b/providers/implementations/ciphers/cipher_sm4_gcm_hw.c
index c0c9b22bd3..b9633f83ed 100644
--- a/providers/implementations/ciphers/cipher_sm4_gcm_hw.c
+++ b/providers/implementations/ciphers/cipher_sm4_gcm_hw.c
@@ -42,11 +42,34 @@ static int sm4_gcm_initkey(PROV_GCM_CTX *ctx, const unsigned char *key,
return 1;
}
+static int hw_gcm_cipher_update(PROV_GCM_CTX *ctx, const unsigned char *in,
+ size_t len, unsigned char *out)
+{
+ if (ctx->enc) {
+ if (ctx->ctr != NULL) {
+ if (CRYPTO_gcm128_encrypt_ctr32(&ctx->gcm, in, out, len, ctx->ctr))
+ return 0;
+ } else {
+ if (CRYPTO_gcm128_encrypt(&ctx->gcm, in, out, len))
+ return 0;
+ }
+ } else {
+ if (ctx->ctr != NULL) {
+ if (CRYPTO_gcm128_decrypt_ctr32(&ctx->gcm, in, out, len, ctx->ctr))
+ return 0;
+ } else {
+ if (CRYPTO_gcm128_decrypt(&ctx->gcm, in, out, len))
+ return 0;
+ }
+ }
+ return 1;
+}
+
static const PROV_GCM_HW sm4_gcm = {
sm4_gcm_initkey,
ossl_gcm_setiv,
ossl_gcm_aad_update,
- ossl_gcm_cipher_update,
+ hw_gcm_cipher_update,
ossl_gcm_cipher_final,
ossl_gcm_one_shot
};
--
2.37.3.windows.1
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