Change sha512 output type from an array to a pointer
The output parameter of mbedtls_sha512_finish_ret and mbedtls_sha512_ret
now has a pointer type rather than array type. This removes spurious
warnings in some compilers when outputting a SHA-384 hash into a
48-byte buffer.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/include/mbedtls/sha512.h b/include/mbedtls/sha512.h
index 56cefe1..2852273 100644
--- a/include/mbedtls/sha512.h
+++ b/include/mbedtls/sha512.h
@@ -134,13 +134,14 @@
* \param ctx The SHA-512 context. This must be initialized
* and have a hash operation started.
* \param output The SHA-384 or SHA-512 checksum result.
- * This must be a writable buffer of length \c 64 Bytes.
+ * This must be a writable buffer of length \c 64 bytes
+ * for SHA-512, 48 bytes for SHA-384.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_sha512_finish_ret( mbedtls_sha512_context *ctx,
- unsigned char output[64] );
+ unsigned char *output );
/**
* \brief This function processes a single data block within
@@ -171,7 +172,8 @@
* 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.
+ * This must be a writable buffer of length \c 64 bytes
+ * for SHA-512, 48 bytes for SHA-384.
* \param is384 Determines which function to use. This must be either
* \c 0 for SHA-512, or \c 1 for SHA-384.
*
@@ -184,7 +186,7 @@
*/
int mbedtls_sha512_ret( const unsigned char *input,
size_t ilen,
- unsigned char output[64],
+ unsigned char *output,
int is384 );
#if defined(MBEDTLS_SELF_TEST)