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g10: Add openpgp_protected flag to agent secret key export functions

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* g10/call-agent.c, g10/call-agent.h (agent_export_key): Add
openpgp_protected flag.
* g10/export.c (receive_seckey_from_agent): Request openpgp_protected
secret keys from agent.
* agent/command.c (hlp_export_key): EXPORT_KEY help text: add a
brief description of the effect of --openpgp.
--

The --openpgp flag for gpg-agent's EXPORT_KEY actually forces
encryption in a certain (RFC 4880-compatible format).  This changeset
exposes that functionality in internal functions, and clarifies
functionality in the agent's help text.

Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
This commit is contained in:
Daniel Kahn Gillmor 2016-06-10 16:15:34 -04:00 • committed by Werner Koch
parent 00f30cc01c
commit 7de7432076
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GPG key ID: E3FDFF218E45B72B
4 changed files with 18 additions and 9 deletions
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7
agent/command.c
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@ -2210,7 +2210,12 @@ static const char hlp_export_key[] =
"Export a secret key from the key store. The key will be encrypted\n"
"using the current session's key wrapping key (cf. command KEYWRAP_KEY)\n"
"using the AESWRAP-128 algorithm. The caller needs to retrieve that key\n"
"prior to using this command. The function takes the keygrip as argument.\n";
"prior to using this command. The function takes the keygrip as argument.\n"
"\n"
"If --openpgp is used, the secret key material will be exported in RFC 4880\n"
"compatible passphrase-protected form. Without --openpgp, the secret key\n"
"material will be exported in the clear (after prompting the user to unlock\n"
"it, if needed).\n";
static gpg_error_t
cmd_export_key (assuan_context_t ctx, char *line)
{