Adding upstream version 1:9.16.44.upstream/1%9.16.44upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 72 insertions, 0 deletions

diff --git a/lib/isc/aes.c b/lib/isc/aes.c
new file mode 100644
index 0000000..a0e23c5
--- /dev/null
+++ b/lib/isc/aes.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file isc/aes.c */
+
+#include <openssl/evp.h>
+#include <openssl/opensslv.h>
+
+#include <isc/aes.h>
+#include <isc/assertions.h>
+#include <isc/platform.h>
+#include <isc/string.h>
+#include <isc/types.h>
+#include <isc/util.h>
+
+void
+isc_aes128_crypt(const unsigned char *key, const unsigned char *in,
+		 unsigned char *out) {
+	EVP_CIPHER_CTX *c;
+	int len;
+
+	c = EVP_CIPHER_CTX_new();
+	RUNTIME_CHECK(c != NULL);
+	RUNTIME_CHECK(EVP_EncryptInit(c, EVP_aes_128_ecb(), key, NULL) == 1);
+	EVP_CIPHER_CTX_set_padding(c, 0);
+	RUNTIME_CHECK(
+		EVP_EncryptUpdate(c, out, &len, in, ISC_AES_BLOCK_LENGTH) == 1);
+	RUNTIME_CHECK(len == ISC_AES_BLOCK_LENGTH);
+	EVP_CIPHER_CTX_free(c);
+}
+
+void
+isc_aes192_crypt(const unsigned char *key, const unsigned char *in,
+		 unsigned char *out) {
+	EVP_CIPHER_CTX *c;
+	int len;
+
+	c = EVP_CIPHER_CTX_new();
+	RUNTIME_CHECK(c != NULL);
+	RUNTIME_CHECK(EVP_EncryptInit(c, EVP_aes_192_ecb(), key, NULL) == 1);
+	EVP_CIPHER_CTX_set_padding(c, 0);
+	RUNTIME_CHECK(
+		EVP_EncryptUpdate(c, out, &len, in, ISC_AES_BLOCK_LENGTH) == 1);
+	RUNTIME_CHECK(len == ISC_AES_BLOCK_LENGTH);
+	EVP_CIPHER_CTX_free(c);
+}
+
+void
+isc_aes256_crypt(const unsigned char *key, const unsigned char *in,
+		 unsigned char *out) {
+	EVP_CIPHER_CTX *c;
+	int len;
+
+	c = EVP_CIPHER_CTX_new();
+	RUNTIME_CHECK(c != NULL);
+	RUNTIME_CHECK(EVP_EncryptInit(c, EVP_aes_256_ecb(), key, NULL) == 1);
+	EVP_CIPHER_CTX_set_padding(c, 0);
+	RUNTIME_CHECK(
+		EVP_EncryptUpdate(c, out, &len, in, ISC_AES_BLOCK_LENGTH) == 1);
+	RUNTIME_CHECK(len == ISC_AES_BLOCK_LENGTH);
+	EVP_CIPHER_CTX_free(c);
+}