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agent: Add option --pss to pksign to be used by smartcards.

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* agent/command.c (cmd_sethash): Add option --pss and allow for
--hash=null.
* agent/agent.h (struct server_control_s): Add digest.is_pss and
zero where needed.
* agent/pksign.c (agent_pksign_do): Allow for PSS with cards.
* scd/command.c (cmd_pksign): Add for --hash=none.
--

This is not a full implementaion of PSS but allows scdaemon card
drivers to detect already PSS formatted data.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2020-08-10 10:01:03 +02:00
parent 373c975859
commit bb096905b9
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GPG key ID: E3FDFF218E45B72B
5 changed files with 31 additions and 8 deletions
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1
agent/command-ssh.c
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@ -2790,6 +2790,7 @@ ssh_handler_sign_request (ctrl_t ctrl, estream_t request, estream_t response)
ctrl->digest.algo = hash_algo;
xfree (ctrl->digest.data);
ctrl->digest.data = NULL;
ctrl->digest.is_pss = 0;
if ((spec.flags & SPEC_FLAG_USE_PKCS1V2))
ctrl->digest.raw_value = 0;
else