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Crypto: Mostly cosmetic changes

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This commit is contained in:
Gregory Nutt 2015-11-16 16:10:01 -06:00
parent 580529ba23
commit 876cb13356
3 changed files with 57 additions and 37 deletions
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4
crypto/Kconfig
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@ -46,4 +46,8 @@ config CRYPTO_SW_AES
Enable the software AES library as described in Enable the software AES library as described in
include/nuttx/crypto/aes.h include/nuttx/crypto/aes.h
TODO: Adapt interfaces so that they are consistent with H/W AES
implemenations. This needs to support up_aesinitialize() and
aes_cypher() per include/nuttx/crypto/crypto.h.
endif # CRYPTO endif # CRYPTO

10
crypto/aes.c
View file

@ -34,6 +34,11 @@
* *
****************************************************************************/ ****************************************************************************/
/* TODO: Adapt interfaces so that they are consistent with H/W AES
* implemenations. This needs to support up_aesinitialize() and
* aes_cypher() per include/nuttx/crypto/crypto.h.
*/
/**************************************************************************** /****************************************************************************
* Included Files * Included Files
****************************************************************************/ ****************************************************************************/
@ -582,7 +587,8 @@ void aes_encrypt(FAR uint8_t *state, FAR const uint8_t *key)
void aes_decrypt(FAR uint8_t *state, FAR const uint8_t *key) void aes_decrypt(FAR uint8_t *state, FAR const uint8_t *key)
{ {
expand_key(g_expanded_key, key); /* Expand the key into 176 bytes */ /* Expand the key into 176 bytes */
expand_key(g_expanded_key, key);
aes_decr(state, g_expanded_key); aes_decr(state, g_expanded_key);
} }

80
crypto/cryptodev.c
View file

@ -50,6 +50,16 @@
#include <nuttx/crypto/crypto.h> #include <nuttx/crypto/crypto.h>
#include <nuttx/crypto/cryptodev.h> #include <nuttx/crypto/cryptodev.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifdef CONFIG_CRYPTO_AES
# define AES_CYPHER(mode) \
aes_cypher(op->dst, op->src, op->len, op->iv, ses->key, ses->keylen, \
mode, encrypt)
#endif
/**************************************************************************** /****************************************************************************
* Private Function Prototypes * Private Function Prototypes
****************************************************************************/ ****************************************************************************/
@ -69,13 +79,18 @@ static int cryptodev_ioctl(FAR struct file *filep, int cmd,
static const struct file_operations g_cryptodevops = static const struct file_operations g_cryptodevops =
{ {
0, /* open */ 0, /* open */
0, /* close */ 0, /* close */
cryptodev_read, /* read */ cryptodev_read, /* read */
cryptodev_write, /* write */ cryptodev_write, /* write */
0, /* seek */ 0, /* seek */
cryptodev_ioctl, /* ioctl */ cryptodev_ioctl /* ioctl */
0, /* poll */ #ifndef CONFIG_DISABLE_POLL
, 0 /* poll */
#endif
#ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS
, 0 /* unlink */
#endif
}; };
/**************************************************************************** /****************************************************************************
@ -110,6 +125,7 @@ static int cryptodev_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
return OK; return OK;
} }
#ifdef CONFIG_CRYPTO_AES
case CIOCCRYPT: case CIOCCRYPT:
{ {
FAR struct crypt_op *op = (FAR struct crypt_op *)arg; FAR struct crypt_op *op = (FAR struct crypt_op *)arg;
@ -117,44 +133,38 @@ static int cryptodev_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
int encrypt; int encrypt;
switch (op->op) switch (op->op)
{ {
case COP_ENCRYPT: case COP_ENCRYPT:
encrypt = 1; encrypt = 1;
break; break;
case COP_DECRYPT: case COP_DECRYPT:
encrypt = 0; encrypt = 0;
break; break;
default: default:
return -EINVAL; return -EINVAL;
} }
switch (ses->cipher) switch (ses->cipher)
{ {
case CRYPTO_AES_ECB:
return AES_CYPHER(AES_MODE_ECB);
#if defined(CONFIG_CRYPTO_AES) case CRYPTO_AES_CBC:
# define AES_CYPHER(mode) aes_cypher(op->dst, op->src, op->len, op->iv, ses->key, ses->keylen, mode, encrypt) return AES_CYPHER(AES_MODE_CBC);
case CRYPTO_AES_ECB: case CRYPTO_AES_CTR:
return AES_CYPHER(AES_MODE_ECB); return AES_CYPHER(AES_MODE_CTR);
case CRYPTO_AES_CBC: default:
return AES_CYPHER(AES_MODE_CBC); return -EINVAL;
}
case CRYPTO_AES_CTR: }
return AES_CYPHER(AES_MODE_CTR);
# undef AES_CYPHER
#endif #endif
default:
return -EINVAL;
}
}
default: default:
return -EINVAL; return -ENOTTY;
} }
} }