Diff: main.cpp

Revision:

0:da8611a6d1bb

diff -r 000000000000 -r da8611a6d1bb main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jan 28 18:00:28 2015 +0000
@@ -0,0 +1,70 @@
+#include "mbed.h"
+#include "Crypto.h"
+
+Serial pc(USBTX, USBRX);
+unsigned char myKEY[16] = {0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,};
+unsigned char myIV[16] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, } ;
+unsigned char msg[0x60] =
+{
+    0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 
+    0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+    0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 
+    0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+} ;
+int main()
+{
+    pc.baud (115200);
+    pc.printf("\r\nCleartext");
+    for(char i=0; i<0x60; i++) 
+    {
+        if(i%16==0) pc.printf("\r\n");
+        pc.printf("%.2X",msg[i]);
+    }
+    
+    // init crypto
+    //AES myAES(AES_128, myKEY); // will default to ECB_MODE
+    //AES myAES(AES_128, myKEY, myIV); // will default to CBC_MODE
+    AES myAES(AES_128, myKEY, myIV, PCBC_MODE); // specify all params, look at BlockCipher.h for modes
+    pc.printf("\r\n\r\nFirst run\r\n");
+    myAES.encrypt(msg,msg,0x60); // same in and out buffer can be used
+    pc.printf("\r\nEncrypted");
+    for(char i=0; i<0x60; i++) 
+    {
+        if(i%16==0) pc.printf("\r\n");
+        pc.printf("%.2X",msg[i]);
+    }
+    pc.printf("\r\nDecrypted again");
+    myAES.decrypt(msg,msg,0x60);
+    for(char i=0; i<0x60; i++) 
+    {
+        if(i%16==0) pc.printf("\r\n");
+        pc.printf("%.2X",msg[i]);
+    }
+    // change key and IV without reinit all
+    unsigned char newKey[16];
+    unsigned char newIV[16];
+    memset(newKey, 0x22, 16);
+    memset(newIV, 0x33, 16);
+    myAES.keyExpansion(newKey);
+    myAES.setIV(newIV);
+    pc.printf("\r\n\r\nKey and IV changed\r\n");
+    unsigned char plaintext[0x60];
+    unsigned char ciphertext[0x60];
+    myAES.encrypt(ciphertext,msg,0x60); // different buffers if you have space
+    pc.printf("\r\nEncrypted");
+    for(char i=0; i<0x60; i++) 
+    {
+        if(i%16==0) pc.printf("\r\n");
+        pc.printf("%.2X",ciphertext[i]);
+    }
+    pc.printf("\r\nDecrypted again");
+    myAES.decrypt(plaintext,ciphertext,0x60); // different buffers if you have space
+    for(char i=0; i<0x60; i++) 
+    {
+        if(i%16==0) pc.printf("\r\n");
+        pc.printf("%.2X",plaintext[i]);
+    }
+
+}
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