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agent: Ignore passphrase constraints for a generated passphrase.

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* agent/agent.h (PINENTRY_STATUS_PASSWORD_GENERATED): New.
(MAX_GENPIN_TRIES): Remove.
* agent/call-pinentry.c (struct entry_parm_s):
(struct inq_cb_parm_s): Add genpinhash and genpinhas_valid.
(is_generated_pin): New.
(inq_cb): Suppress constraints checking for a generated passphrase.
No more need for several tries to generate the passphrase.
(do_getpin): Store a generated passphrase/pin in the status field.
(agent_askpin): Suppress constraints checking for a generated
passphrase.
(agent_get_passphrase): Ditto.
* agent/command.c (cmd_get_passphrase): Ditto.
--

A generated passphrase has enough entropy so that all kind of extra
checks would only reduce the actual available entropy.  We thus detect
if a passphrase has been generated (and not changed) and skip all
passphrase constraints checking.
This commit is contained in:
Werner Koch 2021-08-18 18:24:35 +02:00
parent 576e429d41
commit db5dc7a91a
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
4 changed files with 73 additions and 35 deletions
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3
agent/agent.h
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@ -281,7 +281,8 @@ enum
{
PINENTRY_STATUS_CLOSE_BUTTON = 1 << 0,
PINENTRY_STATUS_PIN_REPEATED = 1 << 8,
PINENTRY_STATUS_PASSWORD_FROM_CACHE = 1 << 9
PINENTRY_STATUS_PASSWORD_FROM_CACHE = 1 << 9,
PINENTRY_STATUS_PASSWORD_GENERATED = 1 << 10
};
/* Information pertaining to pinentry requests. */