diff options
| -rw-r--r-- | example-cipher.c | 47 | ||||
| -rw-r--r-- | example-hmac.c | 14 |
2 files changed, 22 insertions, 39 deletions
diff --git a/example-cipher.c b/example-cipher.c index 616ed06..c6aa55d 100644 --- a/example-cipher.c +++ b/example-cipher.c @@ -1,15 +1,8 @@ /* - * Demo on how to use OpenBSD /dev/crypto device. + * Demo on how to use /dev/crypto device for ciphering. * - * Author: Nikos Mavrogiannopoulos <nmav@gnutls.org> + * Placed under public domain. * - * Based originally on code by Michal Ludvig <michal@logix.cz> - * - * Note: by default OpenBSD doesn't allow using - * /dev/crypto if there is no hardware accelerator - * for a given algorithm. To change this you'll have to - * set cryptodevallowsoft=1 in - * /usr/src/sys/crypto/cryptodev.c and rebuild your kernel. */ #include <stdio.h> #include <string.h> @@ -17,8 +10,7 @@ #include <fcntl.h> #include <sys/ioctl.h> -//#include <crypto/cryptodev.h> -#include "cryptodev.h" +#include <crypto/cryptodev.h> #define DATA_SIZE 4096 #define BLOCK_SIZE 16 @@ -27,26 +19,25 @@ static int test_crypto(int cfd) { - struct { - char in[DATA_SIZE], - encrypted[DATA_SIZE], - decrypted[DATA_SIZE], - iv[BLOCK_SIZE], - key[KEY_SIZE]; - } data; + char plaintext[DATA_SIZE]; + char ciphertext[DATA_SIZE]; + char iv[BLOCK_SIZE]; + char key[KEY_SIZE]; + struct session_op sess; struct crypt_op cryp; memset(&sess, 0, sizeof(sess)); memset(&cryp, 0, sizeof(cryp)); - /* Use the garbage that is on the stack :-) */ - /* memset(&data, 0, sizeof(data)); */ + memset(&plaintext, 0x15, sizeof(plaintext)); + memset(&key, 0x33, sizeof(key)); + memset(&iv, 0x03, sizeof(iv)); /* Get crypto session for AES128 */ sess.cipher = CRYPTO_AES_CBC; sess.keylen = KEY_SIZE; - sess.key = data.key; + sess.key = key; if (ioctl(cfd, CIOCGSESSION, &sess)) { perror("ioctl(CIOCGSESSION)"); return 1; @@ -54,10 +45,10 @@ test_crypto(int cfd) /* Encrypt data.in to data.encrypted */ cryp.ses = sess.ses; - cryp.len = sizeof(data.in); - cryp.src = data.in; - cryp.dst = data.encrypted; - cryp.iv = data.iv; + cryp.len = sizeof(plaintext); + cryp.src = plaintext; + cryp.dst = ciphertext; + cryp.iv = iv; cryp.op = COP_ENCRYPT; if (ioctl(cfd, CIOCCRYPT, &cryp)) { perror("ioctl(CIOCCRYPT)"); @@ -65,8 +56,8 @@ test_crypto(int cfd) } /* Decrypt data.encrypted to data.decrypted */ - cryp.src = data.encrypted; - cryp.dst = data.decrypted; + cryp.src = ciphertext; + cryp.dst = ciphertext; cryp.op = COP_DECRYPT; if (ioctl(cfd, CIOCCRYPT, &cryp)) { perror("ioctl(CIOCCRYPT)"); @@ -74,7 +65,7 @@ test_crypto(int cfd) } /* Verify the result */ - if (memcmp(data.in, data.decrypted, sizeof(data.in)) != 0) { + if (memcmp(plaintext, ciphertext, sizeof(plaintext)) != 0) { fprintf(stderr, "FAIL: Decrypted data are different from the input data.\n"); return 1; diff --git a/example-hmac.c b/example-hmac.c index d300e47..e652c1e 100644 --- a/example-hmac.c +++ b/example-hmac.c @@ -1,15 +1,8 @@ /* - * Demo on how to use OpenBSD /dev/crypto device. + * Demo on how to use /dev/crypto device for HMAC. * - * Author: Nikos Mavrogiannopoulos <nmav@gnutls.org> + * Placed under public domain. * - * Based originally on code by Michal Ludvig <michal@logix.cz> - * - * Note: by default OpenBSD doesn't allow using - * /dev/crypto if there is no hardware accelerator - * for a given algorithm. To change this you'll have to - * set cryptodevallowsoft=1 in - * /usr/src/sys/crypto/cryptodev.c and rebuild your kernel. */ #include <stdio.h> #include <string.h> @@ -17,8 +10,7 @@ #include <fcntl.h> #include <sys/ioctl.h> -//#include <crypto/cryptodev.h> -#include "cryptodev.h" +#include <crypto/cryptodev.h> #define DATA_SIZE 4096 #define BLOCK_SIZE 16 |