diff options
Diffstat (limited to '')
| -rw-r--r-- | agent/divert-scd.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/agent/divert-scd.c b/agent/divert-scd.c index 74b2c652b..0172aac04 100644 --- a/agent/divert-scd.c +++ b/agent/divert-scd.c @@ -507,21 +507,25 @@ agent_card_ecc_kem (ctrl_t ctrl, const unsigned char *ecc_ct, char *ecdh = NULL; size_t len; int rc; + char hexgrip[41]; - rc = agent_card_pkdecrypt (ctrl, ctrl->keygrip, getpin_cb, ctrl, NULL, + bin2hex (ctrl->keygrip, 20, hexgrip); + rc = agent_card_pkdecrypt (ctrl, hexgrip, getpin_cb, ctrl, NULL, ecc_ct, ecc_point_len, &ecdh, &len, NULL); if (rc) return rc; - if (len != ecc_point_len) + if (len == ecc_point_len) + memcpy (ecc_ecdh, ecdh, len); + else if (len == ecc_point_len + 1 && ecdh[0] == 0x40) /* The prefix */ + memcpy (ecc_ecdh, ecdh + 1, len - 1); + else { if (opt.verbose) log_info ("%s: ECC result length invalid (%zu != %zu)\n", __func__, len, ecc_point_len); return gpg_error (GPG_ERR_INV_DATA); } - else - memcpy (ecc_ecdh, ecdh, len); xfree (ecdh); return err; |