301N November 2018 / Mbed 2 deprecated encrypt

15:21 9nov

Dependencies:   mbed mbedtls

main.cpp@6:13ef02c7dd17, 2018-11-09 (annotated)

Committer:
kpan
Date:
Fri Nov 09 10:34:20 2018 +0000
Revision:
6:13ef02c7dd17
Parent:
5:cc8680cda38f
Child:
7:8331ee141606
Error Message

Who changed what in which revision?

UserRevisionLine numberNew contents of line
preyaa4 0:5d1b6c97e2fe 1 #include "mbed.h"
preyaa4 0:5d1b6c97e2fe 2 #include "mbedtls/pk.h"
preyaa4 0:5d1b6c97e2fe 3 #include "mbedtls/ctr_drbg.h"
kpan 6:13ef02c7dd17 4 #include "mbedtls/error.h"
kpan 1:c8f7fe71d151 5 PwmOut r(LED_RED);
kpan 1:c8f7fe71d151 6 PwmOut g(LED_GREEN);
kpan 1:c8f7fe71d151 7 PwmOut b(LED_BLUE);
kpan 3:7a6787f99da2 8 Serial pc(USBTX, USBRX);
kpan 3:7a6787f99da2 9 int main()
kpan 3:7a6787f99da2 10 {
kpan 3:7a6787f99da2 11 pc.printf("INITIALIZING...");
kpan 3:7a6787f99da2 12 wait(1);
kpan 3:7a6787f99da2 13 r = g = b = 1;
kpan 3:7a6787f99da2 14 g = 0;
preyaa4 0:5d1b6c97e2fe 15 int ret = 0;
kpan 5:cc8680cda38f 16 char errbuf[] = "";
preyaa4 0:5d1b6c97e2fe 17 mbedtls_pk_context pk;
preyaa4 0:5d1b6c97e2fe 18
preyaa4 0:5d1b6c97e2fe 19 mbedtls_pk_init( &pk );
preyaa4 0:5d1b6c97e2fe 20 const unsigned char key[]="-----BEGIN RSA PUBLIC KEY-----"
kpan 3:7a6787f99da2 21 "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDMYfnvWtC8Id5bPKae5yXSxQTt"
kpan 3:7a6787f99da2 22 "+Zpul6AnnZWfI2TtIarvjHBFUtXRo96y7hoL4VWOPKGCsRqMFDkrbeUjRrx8iL91"
kpan 3:7a6787f99da2 23 "4/srnyf6sh9c8Zk04xEOpK1ypvBz+Ks4uZObtjnnitf0NBGdjMKxveTq+VE7BWUI"
kpan 3:7a6787f99da2 24 "yQjtQ8mbDOsiLLvh7wIDAQAB"
kpan 3:7a6787f99da2 25 "-----END RSA PUBLIC KEY-----";
kpan 3:7a6787f99da2 26
preyaa4 0:5d1b6c97e2fe 27
preyaa4 0:5d1b6c97e2fe 28 /*
preyaa4 0:5d1b6c97e2fe 29 * Read the RSA public key
preyaa4 0:5d1b6c97e2fe 30 */
kpan 3:7a6787f99da2 31 if( ( ret = mbedtls_pk_parse_public_key( &pk, key,sizeof(key)) ) != 0 ) {
kpan 6:13ef02c7dd17 32 mbedtls_strerror( ret, errbuf, 200 );
kpan 6:13ef02c7dd17 33 printf( " failed\n ! mbedtls_pk_parse_public_key returned -0x%04x\n%s\n", -ret , errbuf);
kpan 1:c8f7fe71d151 34 g = b = 1;
kpan 1:c8f7fe71d151 35 r = 0;
preyaa4 0:5d1b6c97e2fe 36 goto exit;
preyaa4 0:5d1b6c97e2fe 37 }
kpan 3:7a6787f99da2 38
kpan 3:7a6787f99da2 39 unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
preyaa4 0:5d1b6c97e2fe 40 size_t olen = 0;
preyaa4 0:5d1b6c97e2fe 41
preyaa4 0:5d1b6c97e2fe 42 /*
preyaa4 0:5d1b6c97e2fe 43 * Calculate the RSA encryption of the data.
preyaa4 0:5d1b6c97e2fe 44 */
kpan 4:98332985e06f 45 pc.printf("\n . Generating the encrypted value" );
preyaa4 0:5d1b6c97e2fe 46 fflush( stdout );
kpan 3:7a6787f99da2 47 const unsigned char to_encrypt[] = "HelloWorld";
preyaa4 0:5d1b6c97e2fe 48 mbedtls_ctr_drbg_context ctr_drbg;
kpan 3:7a6787f99da2 49
preyaa4 0:5d1b6c97e2fe 50 if( ( ret = mbedtls_pk_encrypt( &pk, to_encrypt, sizeof(to_encrypt),
preyaa4 0:5d1b6c97e2fe 51 buf, &olen, sizeof(buf),
kpan 3:7a6787f99da2 52 mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 ) {
kpan 5:cc8680cda38f 53 mbedtls_strerror( ret, errbuf, 200 );
kpan 5:cc8680cda38f 54 pc.printf( " failed\n ! mbedtls_pk_encrypt returned -0x%04x\n%s\n", -ret, errbuf );
kpan 1:c8f7fe71d151 55 r = g = 1;
kpan 1:c8f7fe71d151 56 b = 0;
preyaa4 0:5d1b6c97e2fe 57 goto exit;
preyaa4 0:5d1b6c97e2fe 58 }
kpan 3:7a6787f99da2 59 exit:
preyaa4 0:5d1b6c97e2fe 60 return 0;
kpan 2:cee7ee508f77 61 }