Merge pull request #5214 from tom-cosgrove-arm/pr5105_2.x
Backport 2.x: doc improvements in aes and sha256 includes
diff --git a/include/mbedtls/aes.h b/include/mbedtls/aes.h
index 94ee58a..e280dbb 100644
--- a/include/mbedtls/aes.h
+++ b/include/mbedtls/aes.h
@@ -522,10 +522,6 @@
* \brief This function performs an AES-CTR encryption or decryption
* operation.
*
- * This function performs the operation defined in the \p mode
- * parameter (encrypt/decrypt), on the input data buffer
- * defined in the \p input parameter.
- *
* Due to the nature of CTR, you must use the same key schedule
* for both encryption and decryption operations. Therefore, you
* must use the context initialized with mbedtls_aes_setkey_enc()
diff --git a/include/mbedtls/sha256.h b/include/mbedtls/sha256.h
index cccd5c4..5b54be2 100644
--- a/include/mbedtls/sha256.h
+++ b/include/mbedtls/sha256.h
@@ -237,6 +237,9 @@
* be a writable buffer of length \c 32 Bytes.
* \param is224 Determines which function to use. This must be
* either \c 0 for SHA-256, or \c 1 for SHA-224.
+ *
+ * \return \c 0 on success.
+ * \return A negative error code on failure.
*/
int mbedtls_sha256_ret( const unsigned char *input,
size_t ilen,