Diff: wolfcrypt/src/wc_encrypt.c

Revision:

7:481bce714567

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wolfcrypt/src/wc_encrypt.c	Tue May 02 08:44:47 2017 +0000
@@ -0,0 +1,205 @@
+/* wc_encrypt.c
+ *
+ * Copyright (C) 2006-2016 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+
+#ifdef HAVE_CONFIG_H
+    #include <config.h>
+#endif
+
+#include <wolfssl/wolfcrypt/settings.h>
+#include <wolfssl/wolfcrypt/aes.h>
+#include <wolfssl/wolfcrypt/des3.h>
+#include <wolfssl/wolfcrypt/wc_encrypt.h>
+#include <wolfssl/wolfcrypt/error-crypt.h>
+
+
+#if !defined(NO_AES) && defined(HAVE_AES_CBC)
+#ifdef HAVE_AES_DECRYPT
+int wc_AesCbcDecryptWithKey(byte* out, const byte* in, word32 inSz,
+                                  const byte* key, word32 keySz, const byte* iv)
+{
+    int  ret = 0;
+#ifdef WOLFSSL_SMALL_STACK
+    Aes* aes = NULL;
+#else
+    Aes  aes[1];
+#endif
+
+#ifdef WOLFSSL_SMALL_STACK
+    aes = (Aes*)XMALLOC(sizeof(Aes), NULL, DYNAMIC_TYPE_TMP_BUFFER);
+    if (aes == NULL)
+        return MEMORY_E;
+#endif
+
+    ret = wc_AesSetKey(aes, key, keySz, iv, AES_DECRYPTION);
+    if (ret == 0)
+        ret = wc_AesCbcDecrypt(aes, out, in, inSz);
+
+#ifdef WOLFSSL_SMALL_STACK
+    XFREE(aes, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+    return ret;
+}
+#endif /* HAVE_AES_DECRYPT */
+
+int wc_AesCbcEncryptWithKey(byte* out, const byte* in, word32 inSz,
+                            const byte* key, word32 keySz, const byte* iv)
+{
+    int  ret = 0;
+#ifdef WOLFSSL_SMALL_STACK
+    Aes* aes = NULL;
+#else
+    Aes  aes[1];
+#endif
+
+#ifdef WOLFSSL_SMALL_STACK
+    aes = (Aes*)XMALLOC(sizeof(Aes), NULL, DYNAMIC_TYPE_TMP_BUFFER);
+    if (aes == NULL)
+        return MEMORY_E;
+#endif
+
+    ret = wc_AesSetKey(aes, key, keySz, iv, AES_ENCRYPTION);
+    if (ret == 0)
+        ret = wc_AesCbcEncrypt(aes, out, in, inSz);
+
+#ifdef WOLFSSL_SMALL_STACK
+    XFREE(aes, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+    return ret;
+}
+#endif /* !NO_AES && HAVE_AES_CBC */
+
+
+#ifndef NO_DES3
+int wc_Des_CbcEncryptWithKey(byte* out, const byte* in, word32 sz,
+                             const byte* key, const byte* iv)
+{
+    int ret  = 0;
+#ifdef WOLFSSL_SMALL_STACK
+    Des* des = NULL;
+#else
+    Des  des[1];
+#endif
+
+#ifdef WOLFSSL_SMALL_STACK
+    des = (Des*)XMALLOC(sizeof(Des), NULL, DYNAMIC_TYPE_TMP_BUFFER);
+    if (des == NULL)
+        return MEMORY_E;
+#endif
+
+    ret = wc_Des_SetKey(des, key, iv, DES_ENCRYPTION);
+    if (ret == 0)
+        ret = wc_Des_CbcEncrypt(des, out, in, sz);
+
+#ifdef WOLFSSL_SMALL_STACK
+    XFREE(des, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+    return ret;
+}
+
+int wc_Des_CbcDecryptWithKey(byte* out, const byte* in, word32 sz,
+                             const byte* key, const byte* iv)
+{
+    int ret  = 0;
+#ifdef WOLFSSL_SMALL_STACK
+    Des* des = NULL;
+#else
+    Des  des[1];
+#endif
+
+#ifdef WOLFSSL_SMALL_STACK
+    des = (Des*)XMALLOC(sizeof(Des), NULL, DYNAMIC_TYPE_TMP_BUFFER);
+    if (des == NULL)
+        return MEMORY_E;
+#endif
+
+    ret = wc_Des_SetKey(des, key, iv, DES_DECRYPTION);
+    if (ret == 0)
+        ret = wc_Des_CbcDecrypt(des, out, in, sz);
+
+#ifdef WOLFSSL_SMALL_STACK
+    XFREE(des, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+    return ret;
+}
+
+
+int wc_Des3_CbcEncryptWithKey(byte* out, const byte* in, word32 sz,
+                              const byte* key, const byte* iv)
+{
+    int ret    = 0;
+#ifdef WOLFSSL_SMALL_STACK
+    Des3* des3 = NULL;
+#else
+    Des3  des3[1];
+#endif
+
+#ifdef WOLFSSL_SMALL_STACK
+    des3 = (Des3*)XMALLOC(sizeof(Des3), NULL, DYNAMIC_TYPE_TMP_BUFFER);
+    if (des3 == NULL)
+        return MEMORY_E;
+#endif
+
+    ret = wc_Des3_SetKey(des3, key, iv, DES_ENCRYPTION);
+    if (ret == 0)
+        ret = wc_Des3_CbcEncrypt(des3, out, in, sz);
+
+#ifdef WOLFSSL_SMALL_STACK
+    XFREE(des3, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+    return ret;
+}
+
+
+int wc_Des3_CbcDecryptWithKey(byte* out, const byte* in, word32 sz,
+                              const byte* key, const byte* iv)
+{
+    int ret    = 0;
+#ifdef WOLFSSL_SMALL_STACK
+    Des3* des3 = NULL;
+#else
+    Des3  des3[1];
+#endif
+
+#ifdef WOLFSSL_SMALL_STACK
+    des3 = (Des3*)XMALLOC(sizeof(Des3), NULL, DYNAMIC_TYPE_TMP_BUFFER);
+    if (des3 == NULL)
+        return MEMORY_E;
+#endif
+
+    ret = wc_Des3_SetKey(des3, key, iv, DES_DECRYPTION);
+    if (ret == 0)
+        ret = wc_Des3_CbcDecrypt(des3, out, in, sz);
+
+#ifdef WOLFSSL_SMALL_STACK
+    XFREE(des3, NULL, DYNAMIC_TYPE_TMP_BUFFER);
+#endif
+
+    return ret;
+}
+
+#endif /* !NO_DES3 */
+