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agent: Allow NULL for R_PADDING, when calling scd and tpm2d.

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* agent/call-scd.c (padding_info_cb): Allow NULL.
(agent_card_pkdecrypt): Likewise.
* agent/divert-scd.c (divert_pkdecrypt): Likewise.
* agent/divert-tpm2.c (divert_tpm2_pkdecrypt): Likewise.

--

It's for RSA PKCD#1 encoding if the decrypt operation removes padding
or not.  When caller knows it's not RSA, this information is no use
and it is better to allow NULL with the variable R_PADDING.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2024-04-25 10:48:24 +09:00
parent 2958e5e4cf
commit 2593dcbceb
No known key found for this signature in database
GPG key ID: 640114AF89DE6054
3 changed files with 13 additions and 8 deletions
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6
agent/divert-tpm2.c
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@ -106,7 +106,8 @@ divert_tpm2_pkdecrypt (ctrl_t ctrl,
const unsigned char *s;
size_t n;
*r_padding = -1;
if (r_padding)
*r_padding = -1;
s = cipher;
if (*s != '(')
@ -125,7 +126,8 @@ divert_tpm2_pkdecrypt (ctrl_t ctrl,
return gpg_error (GPG_ERR_INV_SEXP);
if (smatch (&s, n, "rsa"))
{
*r_padding = 0;
if (r_padding)
*r_padding = 0;
if (*s != '(')
return gpg_error (GPG_ERR_UNKNOWN_SEXP);
s++;