aes: Use length instead of bits_length in XTS
mbedtls_aes_crypt_xts() currently takes a `bits_length` parameter, unlike
the other block modes. Change the parameter to accept a bytes length
instead, as the `bits_length` parameter is not actually ever used in the
current implementation.
diff --git a/include/mbedtls/aes.h b/include/mbedtls/aes.h
index e166e9c..67cab25 100644
--- a/include/mbedtls/aes.h
+++ b/include/mbedtls/aes.h
@@ -295,7 +295,7 @@
* \param ctx The AES XTS context to use for AES XTS operations.
* \param mode The AES operation: #MBEDTLS_AES_ENCRYPT or
* #MBEDTLS_AES_DECRYPT.
- * \param bits_length The length of a data unit in bits.
+ * \param length The length of a data unit in bytes.
* \param iv The address of the data unit encoded as an array of 16
* bytes in little-endian format. For disk encryption, this
* is typically the index of the block device sector that
@@ -313,7 +313,7 @@
*/
int mbedtls_aes_crypt_xts( mbedtls_aes_xts_context *ctx,
int mode,
- size_t bits_length,
+ size_t length,
const unsigned char iv[16],
const unsigned char *input,
unsigned char *output );