From c7b508747347e8a17546140da64e5170b01e075e Mon Sep 17 00:00:00 2001 From: Kaz Kylheku Date: Thu, 4 Jul 2019 07:28:18 -0700 Subject: sha256: allow application to specify digest buffer. * chksum.c (sha256_stream_impl): New static function, formed out of bulk of sha256_stream. Takes a pointer to a buffer where the digest is stored. (sha256_ensure_buf): New static function. (sha256_stream): Take buf argument; use sha256_ensure_buf to allocate a buffer if necessary, and to obtain the low-level buffer pointer. Implementation moved into sha256_stream_impl. (sha256_buf, sha256_str): Take pointer to digest buffer; don't allocate a buf object, don't return anything. (sha256): Take buf argument; use sha256_ensure_buf to allocate a buffer if necessary, and to obtain the low-level buffer pointer, which is passed to sha256_buf and sha256_str. (chksum_init): Update registrations of intrinsics with new optional parameters. * chksum.h (sha256_stream, sha256): Declarations updated. * txr.1: Updated. --- chksum.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'chksum.h') diff --git a/chksum.h b/chksum.h index e3516f57..6eb68588 100644 --- a/chksum.h +++ b/chksum.h @@ -25,8 +25,8 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -val sha256_stream(val stream, val nbytes); -val sha256(val obj); +val sha256_stream(val stream, val nbytes, val buf); +val sha256(val obj, val buf); val crc32_stream(val stream, val nbytes); val crc32(val obj); void chksum_init(void); -- cgit v1.2.3