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Jussi Kivilinna 4e27b9defc g10/plaintext: do_hash: use iobuf_read for higher performance
* g10/plaintext.c (do_hash): Use iobuf_read instead of iobuf_get for
reading data; Use gcry_md_write instead of gcry_md_putc for hash data.
--

This patch reduces iobuf_read per byte processing overhead and speeds
up detached signature verifying.

Detached verifying speed on AMD Ryzen 5800X (4.3GiB file, SHA256):

         gpg process
         user time
 before: 9.410s
 after:  1.913s (4.9x faster)

GnuPG-bug-id: T5826
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2022-02-27 18:49:25 +02:00
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