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esp32 hwcrypto: Use AES registers directly

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Angus Gratton
2017-08-16 08:58:33 +10:00
committed by Angus Gratton
parent e256fb6d96
commit 2624e10055
5 changed files with 75 additions and 98 deletions
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26
components/esp32/include/hwcrypto/aes.h
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@@ -38,11 +38,6 @@ extern "C" {
#define ERR_ESP_AES_INVALID_KEY_LENGTH -0x0020 /**< Invalid key length. */
#define ERR_ESP_AES_INVALID_INPUT_LENGTH -0x0022 /**< Invalid data input length. */
typedef struct {
enum AES_BITS aesbits;
uint8_t key[32];
} key_context, KEY_CTX;
/**
* \brief AES context structure
*
@@ -52,10 +47,8 @@ typedef struct {
* generating an extra round key
*/
typedef struct {
int nr; /*!< number of rounds */
uint32_t *rk; /*!< AES round keys */
KEY_CTX enc;
KEY_CTX dec;
uint8_t key_bytes;
uint8_t key[32];
} esp_aes_context;
/**
@@ -94,7 +87,7 @@ void esp_aes_init( esp_aes_context *ctx );
void esp_aes_free( esp_aes_context *ctx );
/**
* \brief AES key schedule (encryption)
* \brief AES set key schedule (encryption or decryption)
*
* \param ctx AES context to be initialized
* \param key encryption key
@@ -102,18 +95,7 @@ void esp_aes_free( esp_aes_context *ctx );
*
* \return 0 if successful, or ERR_AES_INVALID_KEY_LENGTH
*/
int esp_aes_setkey_enc( esp_aes_context *ctx, const unsigned char *key, unsigned int keybits );
/**
* \brief AES key schedule (decryption)
*
* \param ctx AES context to be initialized
* \param key decryption key
* \param keybits must be 128, 192 or 256
*
* \return 0 if successful, or ERR_AES_INVALID_KEY_LENGTH
*/
int esp_aes_setkey_dec( esp_aes_context *ctx, const unsigned char *key, unsigned int keybits );
int esp_aes_setkey( esp_aes_context *ctx, const unsigned char *key, unsigned int keybits );
/**
* \brief AES-ECB block encryption/decryption