Fix parameter validation in SHA-512 module
diff --git a/include/mbedtls/sha512.h b/include/mbedtls/sha512.h
index 93f9646..bf40e4b 100644
--- a/include/mbedtls/sha512.h
+++ b/include/mbedtls/sha512.h
@@ -116,8 +116,7 @@
* and have a hash operation started.
* \param input The buffer holding the input data. This must
* be a readable buffer of length \p ilen Bytes.
- * It must not be \c NULL.
- * \param ilen The length of the input data \p input in Bytes.
+ * \param ilen The length of the input data in Bytes.
*
* \return \c 0 on success.
* \return A negative error code on failure.
@@ -184,8 +183,8 @@
* \param ctx The SHA-512 context. This must be initialized
* and have a hash operation started.
* \param input The buffer holding the data. This must be a readable
- * buffer of length \p ilen Bytes. It must not be \c NULL.
- * \param ilen The length of the input data \p input in Bytes.
+ * buffer of length \p ilen Bytes.
+ * \param ilen The length of the input data in Bytes.
*/
MBEDTLS_DEPRECATED void mbedtls_sha512_update( mbedtls_sha512_context *ctx,
const unsigned char *input,
@@ -235,9 +234,8 @@
* output = SHA-512(input buffer).
*
* \param input The buffer holding the input data. This must be
- * a readable buffer of length \p ilen Bytes. It
- * must not be \c NULL.
- * \param ilen The length of the input data \p input in Bytes.
+ * a readable buffer of length \p ilen Bytes.
+ * \param ilen The length of the input data in Bytes.
* \param output The SHA-384 or SHA-512 checksum result.
* This must be a writable buffer of length \c 64 Bytes.
* \param is384 Determines which function to use. This must be either
@@ -270,9 +268,8 @@
* \deprecated Superseded by mbedtls_sha512_ret() in 2.7.0
*
* \param input The buffer holding the data. This must be a
- * readable buffer of length \p ilen Bytes. It
- * must not be \c NULL.
- * \param ilen The length of the input data \p input in Bytes.
+ * readable buffer of length \p ilen Bytes.
+ * \param ilen The length of the input data in Bytes.
* \param output The SHA-384 or SHA-512 checksum result. This must
* be a writable buffer of length \c 64 Bytes.
* \param is384 Determines which function to use. This must be eiher