1 files changed, 83 insertions, 0 deletions
diff --git a/providers/implementations/ciphers/cipher_aes_gcm_hw_armv8.inc b/providers/implementations/ciphers/cipher_aes_gcm_hw_armv8.inc
new file mode 100644
index 0000000000..4e8cc9c54e
--- /dev/null
+++ b/providers/implementations/ciphers/cipher_aes_gcm_hw_armv8.inc
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/*
+ * Crypto extention support for AES GCM.
+ * This file is included by cipher_aes_gcm_hw.c
+ */
+
+size_t armv8_aes_gcm_encrypt(const unsigned char *in, unsigned char *out, size_t len,
+                             const void *key, unsigned char ivec[16], u64 *Xi)
+{
+    size_t align_bytes = 0;
+    align_bytes = len - len % 16;
+
+    AES_KEY *aes_key = (AES_KEY *)key;
+
+    switch(aes_key->rounds) {
+        case 10:
+            aes_gcm_enc_128_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+        case 12:
+            aes_gcm_enc_192_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+        case 14:
+            aes_gcm_enc_256_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+    }
+    return align_bytes;
+}
+
+size_t armv8_aes_gcm_decrypt(const unsigned char *in, unsigned char *out, size_t len,
+                             const void *key, unsigned char ivec[16], u64 *Xi)
+{
+    size_t align_bytes = 0;
+    align_bytes = len - len % 16;
+
+    AES_KEY *aes_key = (AES_KEY *)key;
+
+    switch(aes_key->rounds) {
+        case 10:
+            aes_gcm_dec_128_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+        case 12:
+            aes_gcm_dec_192_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+        case 14:
+            aes_gcm_dec_256_kernel(in, align_bytes * 8, out, (uint64_t *)Xi, ivec, key);
+            break;
+    }
+    return align_bytes;
+}
+
+static int armv8_aes_gcm_initkey(PROV_GCM_CTX *ctx, const unsigned char *key,
+                                 size_t keylen)
+{
+    PROV_AES_GCM_CTX *actx = (PROV_AES_GCM_CTX *)ctx;
+    AES_KEY *ks = &actx->ks.ks;
+
+    GCM_HW_SET_KEY_CTR_FN(ks, aes_v8_set_encrypt_key, aes_v8_encrypt,
+                          aes_v8_ctr32_encrypt_blocks);
+    return 1;
+}
+
+
+static const PROV_GCM_HW armv8_aes_gcm = {
+    armv8_aes_gcm_initkey,
+    gcm_setiv,
+    gcm_aad_update,
+    gcm_cipher_update,
+    gcm_cipher_final,
+    gcm_one_shot
+};
+
+const PROV_GCM_HW *PROV_AES_HW_gcm(size_t keybits)
+{
+    return AES_PMULL_CAPABLE ? &armv8_aes_gcm : &aes_gcm;
+}