Diff: RadioSecurity.cpp

Revision:

0:0c31756924a2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RadioSecurity.cpp	Wed Feb 06 15:26:48 2019 +0000
@@ -0,0 +1,229 @@
+/*
+ * The file is licensed under the Apache License, Version 2.0
+ * (c) 2019 Helmut Tschemernjak
+ * 30826 Garbsen (Hannover) Germany
+ */
+
+#ifdef ARDUINO
+#include <Arduino.h>
+#define FEATURE_LORA	1
+#include "arduino-util.h"
+#endif
+
+#ifdef __MBED__
+#include "mbed.h"
+#include "main.h"
+#include "PinMap.h"
+#endif
+
+#include "RadioSecurityInterface.h"
+#include "RadioSecurity.h"
+
+#ifdef FEATURE_LORA
+RadioSecurity::RadioSecurity(void)
+{
+    
+}
+
+RadioSecurity::~RadioSecurity(void)
+{
+}
+
+int
+RadioSecurity::GetSecurityVersion(void)
+{
+    return _securityVers;
+}
+
+int
+RadioSecurity::GetHashBlockSize(void)
+{
+    return SHA256_BLOCK_SIZE;
+}
+
+void
+RadioSecurity::HashPassword(void *seed, int seedLen, void *password, int pwLen, void *hashResult)
+{
+    SHA256_CTX *shactx = (SHA256_CTX *)new uint8_t[sizeof(SHA256_CTX)];
+	if (!shactx)
+        return;
+    
+    sha256_init(shactx);
+    if (seedLen)
+        sha256_update(shactx, (BYTE *)seed, seedLen);
+    if (password)
+        sha256_update(shactx, (BYTE *)password, pwLen);
+    sha256_final(shactx, (BYTE *)hashResult);
+    
+    delete[] shactx;
+}
+
+
+int
+RadioSecurity::GetEncryptionBlockSize(void)
+{
+    return AES128_KEYLEN;
+}
+
+
+
+void *
+RadioSecurity::CreateEncryptionContext(void *key, int keyLen, void *seed, int seedlen)
+{
+    AES_CTX *aesctx = (AES_CTX *)new uint8_t[sizeof(AES_CTX)];
+    
+    uint8_t mykey[AES128_KEYLEN];
+    uint8_t myseed[AES128_KEYLEN];
+    
+    if (seed) {
+    	memset(myseed, 0, sizeof(myseed));
+        memcpy(myseed, seed, seedlen > AES128_KEYLEN ? AES128_KEYLEN : seedlen);
+    }
+    memset(mykey, 0, sizeof(mykey));
+    memcpy(mykey, key, keyLen  > AES128_KEYLEN ? AES128_KEYLEN : keyLen);
+
+    AES128_InitContext(aesctx, mykey, seed ? myseed : NULL);
+
+    return aesctx;
+}
+
+void
+RadioSecurity::DestroyEncryptionContext(void *context)
+{
+	delete[] (AES_CTX *)context;
+}
+
+
+void
+RadioSecurity::EncryptMessage(void *context, const void *input, void *output, int len)
+{
+    uint8_t *in = (uint8_t *)input;
+    uint8_t *out = (uint8_t *)output;
+    int off = 0;
+    
+    while (off < len) {
+    	AES128_ECB_encrypt((AES_CTX *)context, in + off, out + off);
+        off += AES128_KEYLEN;
+    }
+}
+
+
+void
+RadioSecurity::DecryptMessage(void *context, const void *input, void *output, int len)
+{
+    uint8_t *in = (uint8_t *)input;
+    uint8_t *out = (uint8_t *)output;
+	int off = 0;
+    
+    while (off < len) {
+        AES128_ECB_decrypt((AES_CTX *)context, in + off, out + off);
+        off += AES128_KEYLEN;
+    }
+}
+
+void
+RadioSecurity::EncryptTest(void)
+{
+    uint8_t key[] = {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c};
+    uint8_t iv[]  = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
+    
+    {
+        
+        dprintf("ECB encrypt: ");
+        void *context = CreateEncryptionContext(key, sizeof(key));
+        
+        // static void test_encrypt_ecb(void)
+        uint8_t in[]  = {0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a};
+        uint8_t out[] = {0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97};
+        uint8_t buffer[16];
+        
+        
+        AES128_ECB_encrypt((AES_CTX *)context, in, buffer);
+        
+        
+        if (memcmp((char*) out, (char*) buffer, 16) == 0)
+        {
+            dprintf("SUCCESS!");
+        } else {
+            dprintf("FAILURE!");
+        }
+        DestroyEncryptionContext(context);
+    }
+    
+    {
+        dprintf("ECB decrypt: ");
+        void *context = CreateEncryptionContext(key, sizeof(key));
+
+        uint8_t in[]  = {0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97};
+        uint8_t out[] = {0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a};
+        uint8_t buffer[16];
+        
+        AES128_ECB_decrypt((AES_CTX *)context, in, buffer);
+        
+        if(memcmp((char*) out, (char*) buffer, 16) == 0) {
+            dprintf("SUCCESS!");
+        } else {
+            dprintf("FAILURE!");
+        }
+        DestroyEncryptionContext(context);
+    }
+
+    
+    {
+        dprintf("CBC encrypt: ");
+        void *context = CreateEncryptionContext(key, sizeof(key), iv, sizeof(iv));
+
+        uint8_t in[]  = { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
+            0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
+            0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
+            0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 };
+    	uint8_t out[] = { 0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46, 0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,
+        	0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee, 0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,
+        	0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b, 0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16,
+        	0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7 };
+	
+        uint8_t buffer[64];
+
+    
+    	AES128_CBC_encrypt_buffer((AES_CTX	*)context, buffer, in, 64);
+    
+    
+        if(memcmp((char*) out, (char*) buffer, 64) == 0)     {
+            dprintf("SUCCESS!");
+        } else     {
+            dprintf("FAILURE!");
+        }
+        DestroyEncryptionContext(context);
+    }
+    
+    {
+        dprintf("CBC decrypt: ");
+        void *context = CreateEncryptionContext(key, sizeof(key), iv, sizeof(iv));
+
+        uint8_t in[]  = { 0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46, 0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,
+            0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee, 0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,
+            0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b, 0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16,
+            0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7 };
+        uint8_t out[] = { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
+            0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
+            0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
+            0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 };
+        uint8_t buffer[64];
+        
+        
+        AES128_CBC_decrypt_buffer((AES_CTX	*)context, buffer+0, in+0,  16);
+        AES128_CBC_decrypt_buffer((AES_CTX	*)context, buffer+16, in+16, 16);
+        AES128_CBC_decrypt_buffer((AES_CTX	*)context, buffer+32, in+32, 16);
+        AES128_CBC_decrypt_buffer((AES_CTX	*)context, buffer+48, in+48, 16);
+        
+        if (memcmp((char*) out, (char*) buffer, 64) == 0) {
+            dprintf("SUCCESS!");
+        } else {
+            dprintf("FAILURE!");
+        }
+        DestroyEncryptionContext(context);
+    }
+}
+
+
+#endif // FEATURE_LORA