From 9e80202352dd49bdd9e67b8b906d86f058431505 Mon Sep 17 00:00:00 2001
From: Timothy Pearson <tpearson@raptorengineering.com>
Date: Sat, 11 May 2019 15:12:49 -0500
Subject: Initial import of abandoned HQEMU version 2.5.2
---
src/crypto/cipher.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 74 insertions(+)
create mode 100644 src/crypto/cipher.c
(limited to 'src/crypto/cipher.c')
diff --git a/src/crypto/cipher.c b/src/crypto/cipher.c
new file mode 100644
index 0000000..c8bd180
--- /dev/null
+++ b/src/crypto/cipher.c
@@ -0,0 +1,74 @@
+/*
+ * QEMU Crypto cipher algorithms
+ *
+ * Copyright (c) 2015 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "crypto/cipher.h"
+
+
+static size_t alg_key_len[QCRYPTO_CIPHER_ALG_LAST] = {
+ [QCRYPTO_CIPHER_ALG_AES_128] = 16,
+ [QCRYPTO_CIPHER_ALG_AES_192] = 24,
+ [QCRYPTO_CIPHER_ALG_AES_256] = 32,
+ [QCRYPTO_CIPHER_ALG_DES_RFB] = 8,
+};
+
+static bool
+qcrypto_cipher_validate_key_length(QCryptoCipherAlgorithm alg,
+ size_t nkey,
+ Error **errp)
+{
+ if ((unsigned)alg >= QCRYPTO_CIPHER_ALG_LAST) {
+ error_setg(errp, "Cipher algorithm %d out of range",
+ alg);
+ return false;
+ }
+
+ if (alg_key_len[alg] != nkey) {
+ error_setg(errp, "Cipher key length %zu should be %zu",
+ alg_key_len[alg], nkey);
+ return false;
+ }
+ return true;
+}
+
+#if defined(CONFIG_GCRYPT) || defined(CONFIG_NETTLE)
+static uint8_t *
+qcrypto_cipher_munge_des_rfb_key(const uint8_t *key,
+ size_t nkey)
+{
+ uint8_t *ret = g_new0(uint8_t, nkey);
+ size_t i;
+ for (i = 0; i < nkey; i++) {
+ uint8_t r = key[i];
+ r = (r & 0xf0) >> 4 | (r & 0x0f) << 4;
+ r = (r & 0xcc) >> 2 | (r & 0x33) << 2;
+ r = (r & 0xaa) >> 1 | (r & 0x55) << 1;
+ ret[i] = r;
+ }
+ return ret;
+}
+#endif /* CONFIG_GCRYPT || CONFIG_NETTLE */
+
+#ifdef CONFIG_GCRYPT
+#include "crypto/cipher-gcrypt.c"
+#elif defined CONFIG_NETTLE
+#include "crypto/cipher-nettle.c"
+#else
+#include "crypto/cipher-builtin.c"
+#endif
--
cgit v1.1