Latest update.

2020-01-17 19:45:12 +09:00
parent 016df9f433
commit 0f7abb4eb6
1100 changed files with 47785 additions and 16292 deletions
@@ -0,0 +1,105 @@
+/*
+ * 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
+ */
+
+/*
+ * This file uses the low level AES functions (which are deprecated for
+ * non-internal use) in order to implement provider AES ciphers.
+ */
+#include "internal/deprecated.h"
+
+#include "cipher_aes_siv.h"
+
+static int aes_siv_initkey(void *vctx, const unsigned char *key, size_t keylen)
+{
+    PROV_AES_SIV_CTX *ctx = (PROV_AES_SIV_CTX *)vctx;
+    SIV128_CONTEXT *sctx = &ctx->siv;
+    size_t klen  = keylen / 2;
+
+    switch (klen) {
+    case 16:
+        ctx->cbc = EVP_CIPHER_fetch(NULL, "AES-128-CBC", "");
+        ctx->ctr = EVP_CIPHER_fetch(NULL, "AES-128-CTR", "");
+        break;
+    case 24:
+        ctx->cbc = EVP_CIPHER_fetch(NULL, "AES-192-CBC", "");
+        ctx->ctr = EVP_CIPHER_fetch(NULL, "AES-192-CTR", "");
+        break;
+    case 32:
+        ctx->cbc = EVP_CIPHER_fetch(NULL, "AES-256-CBC", "");
+        ctx->ctr = EVP_CIPHER_fetch(NULL, "AES-256-CTR", "");
+        break;
+    default:
+        return 0;
+    }
+    /*
+     * klen is the length of the underlying cipher, not the input key,
+     * which should be twice as long
+     */
+    return CRYPTO_siv128_init(sctx, key, klen, ctx->cbc, ctx->ctr);
+}
+
+static int aes_siv_settag(void *vctx, const unsigned char *tag, size_t tagl)
+{
+    PROV_AES_SIV_CTX *ctx = (PROV_AES_SIV_CTX *)vctx;
+    SIV128_CONTEXT *sctx = &ctx->siv;
+
+    return CRYPTO_siv128_set_tag(sctx, tag, tagl);
+}
+
+static void aes_siv_setspeed(void *vctx, int speed)
+{
+    PROV_AES_SIV_CTX *ctx = (PROV_AES_SIV_CTX *)vctx;
+    SIV128_CONTEXT *sctx = &ctx->siv;
+
+    CRYPTO_siv128_speed(sctx, (int)speed);
+}
+
+static void aes_siv_cleanup(void *vctx)
+{
+    PROV_AES_SIV_CTX *ctx = (PROV_AES_SIV_CTX *)vctx;
+    SIV128_CONTEXT *sctx = &ctx->siv;
+
+    CRYPTO_siv128_cleanup(sctx);
+    EVP_CIPHER_free(ctx->cbc);
+    EVP_CIPHER_free(ctx->ctr);
+}
+
+static int aes_siv_cipher(void *vctx, unsigned char *out,
+                          const unsigned char *in, size_t len)
+{
+    PROV_AES_SIV_CTX *ctx = (PROV_AES_SIV_CTX *)vctx;
+    SIV128_CONTEXT *sctx = &ctx->siv;
+
+    /* EncryptFinal or DecryptFinal */
+    if (in == NULL)
+        return CRYPTO_siv128_finish(sctx) == 0;
+
+    /* Deal with associated data */
+    if (out == NULL)
+        return (CRYPTO_siv128_aad(sctx, in, len) == 1);
+
+    if (ctx->enc)
+        return CRYPTO_siv128_encrypt(sctx, in, out, len) > 0;
+
+    return CRYPTO_siv128_decrypt(sctx, in, out, len) > 0;
+}
+
+static const PROV_CIPHER_HW_AES_SIV aes_siv_hw =
+{
+    aes_siv_initkey,
+    aes_siv_cipher,
+    aes_siv_setspeed,
+    aes_siv_settag,
+    aes_siv_cleanup
+};
+
+const PROV_CIPHER_HW_AES_SIV *PROV_CIPHER_HW_aes_siv(size_t keybits)
+{
+    return &aes_siv_hw;
+}