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agent: Add support for TPM2 for ECC KEM.

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* agent/agent.h (agent_tpm2d_ecc_kem): New.
* agent/divert-tpm2.c (agent_tpm2d_ecc_kem): New.
* agent/pkdecrypt.c (ecc_pgp_kem_decap): Call agent_tpm2d_ecc_kem.

--

GnuPG-bug-id: 7649
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2025-05-22 14:34:05 +09:00
parent b956f47e2a
commit 04782e7fd6
No known key found for this signature in database
GPG key ID: 640114AF89DE6054
3 changed files with 51 additions and 2 deletions
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13
agent/agent.h
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@ -655,6 +655,9 @@ int divert_tpm2_pkdecrypt (ctrl_t ctrl,
char **r_buf, size_t *r_len, int *r_padding);
int divert_tpm2_writekey (ctrl_t ctrl, const unsigned char *grip,
gcry_sexp_t s_skey);
int agent_tpm2d_ecc_kem (ctrl_t ctrl, const unsigned char *shadow_info,
const unsigned char *ecc_ct,
size_t ecc_point_len, unsigned char *ecc_ecdh);
#else /*!HAVE_LIBTSS*/
static inline int
divert_tpm2_pksign (ctrl_t ctrl,
@ -686,6 +689,16 @@ divert_tpm2_writekey (ctrl_t ctrl, const unsigned char *grip,
(void)ctrl; (void)grip; (void)s_skey;
return gpg_error (GPG_ERR_NOT_SUPPORTED);
}
static inline int
agent_tpm2d_ecc_kem (ctrl_t ctrl, const unsigned char *shadow_info,
const unsigned char *ecc_ct,
size_t ecc_point_len, unsigned char *ecc_ecdh)
{
(void)ctrl; (void)ecc_ct;
(void)ecc_point_len; (void)ecc_ecdh;
return gpg_error (GPG_ERR_NOT_SUPPORTED);
}
#endif /*!HAVE_LIBTSS*/