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Change sha512 output type from an array to a pointer

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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>
This commit is contained in:
Gilles Peskine
2021-05-13 00:22:35 +02:00
parent e0f06c624c
commit e02e02f203
4 changed files with 21 additions and 6 deletions
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10
include/mbedtls/sha512.h
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@ -134,13 +134,14 @@ int mbedtls_sha512_update_ret( mbedtls_sha512_context *ctx,
* \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 @@ int mbedtls_internal_sha512_process( mbedtls_sha512_context *ctx,
* 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_internal_sha512_process( mbedtls_sha512_context *ctx,
*/
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)