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gpg: Avoid extra pinentries for each subkey in --export-secret-keys.

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* agent/command.c (cmd_export_key): Actually implement the cache_nonce
feature.
* g10/export.c (do_export_stream): Make use of a cache_nonce.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2014-11-02 17:51:30 +01:00
parent d95f05c314
commit f8c993fbe2
3 changed files with 35 additions and 7 deletions
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6
g10/call-agent.c
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@ -2152,8 +2152,10 @@ agent_import_key (ctrl_t ctrl, const char *desc, char **cache_nonce_addr,
/* Receive a secret key from the agent. HEXKEYGRIP is the hexified
keygrip, DESC a prompt to be displayed with the agent's passphrase
question (needs to be plus+percent escaped). On success the key is
stored as a canonical S-expression at R_RESULT and R_RESULTLEN. */
question (needs to be plus+percent escaped). If CACHE_NONCE_ADDR
is not NULL the agent is advised to first try a passphrase
associated with that nonce. On success the key is stored as a
canonical S-expression at R_RESULT and R_RESULTLEN. */
gpg_error_t
agent_export_key (ctrl_t ctrl, const char *hexkeygrip, const char *desc,
char **cache_nonce_addr,