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Add a DECRYPTION_INFO status. 

DECRYPTION_INFO <mdc_method> <sym_algo>
        Print information about the symmetric encryption algorithm and
        the MDC method.  This will be emitted even if the decryption
        fails.
This commit is contained in:
Werner Koch 2011-02-03 20:59:01 +01:00
parent 71e7a1644e
commit 5667e33290
5 changed files with 81 additions and 63 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
common/ChangeLog
View File

@ -1,5 +1,7 @@
2011-02-03 Werner Koch <wk@g10code.com>
* status.h (STATUS_DECRYPTION_INFO): New.
* argparse.c (strusage): Update copyright year.
2011-01-31 Werner Koch <wk@g10code.com>

11
common/status.h
View File

@ -20,7 +20,7 @@
#ifndef GNUPG_COMMON_STATUS_H
#define GNUPG_COMMON_STATUS_H
enum
enum
{
STATUS_ENTER,
STATUS_LEAVE,
@ -39,7 +39,7 @@ enum
STATUS_TRUST_MARGINAL,
STATUS_TRUST_FULLY,
STATUS_TRUST_ULTIMATE,
STATUS_NEED_PASSPHRASE,
STATUS_VALIDSIG,
STATUS_SIG_ID,
@ -49,6 +49,7 @@ enum
STATUS_NO_PUBKEY,
STATUS_NO_SECKEY,
STATUS_NEED_PASSPHRASE_SYM,
STATUS_DECRYPTION_INFO,
STATUS_DECRYPTION_FAILED,
STATUS_DECRYPTION_OKAY,
STATUS_MISSING_PASSPHRASE,
@ -58,20 +59,20 @@ enum
STATUS_ERRMDC,
STATUS_IMPORTED,
STATUS_IMPORT_OK,
STATUS_IMPORT_PROBLEM,
STATUS_IMPORT_PROBLEM,
STATUS_IMPORT_RES,
STATUS_IMPORT_CHECK,
STATUS_FILE_START,
STATUS_FILE_DONE,
STATUS_FILE_ERROR,
STATUS_BEGIN_DECRYPTION,
STATUS_END_DECRYPTION,
STATUS_BEGIN_ENCRYPTION,
STATUS_END_ENCRYPTION,
STATUS_BEGIN_SIGNING,
STATUS_DELETE_PROBLEM,
STATUS_GET_BOOL,

70
doc/DETAILS
View File

@ -57,7 +57,7 @@ record; gpg2 does this by default and the option is a dummy.
f = The key is fully valid
u = The key is ultimately valid. This often means
that the secret key is available, but any key may
be marked as ultimately valid.
be marked as ultimately valid.
If the validity information is given for a UID or UAT
record, it describes the validity calculated based on this
@ -97,7 +97,7 @@ record; gpg2 does this by default and the option is a dummy.
This is a single letter, but be prepared that additional
information may follow in some future versions. For trust
signatures with a regular expression, this is the regular
expression value, quoted as in field 10.
expression value, quoted as in field 10.
10. Field: User-ID. The value is quoted like a C string to avoid
control characters (the colon is quoted "\x3a").
@ -134,7 +134,7 @@ record; gpg2 does this by default and the option is a dummy.
this is the same string as the fingerprint. The advantage
of using this value is that it is guaranteed to have been
been build by the same lookup algorithm as gpgsm uses.
For "uid" records this lists the preferences in the same
For "uid" records this lists the preferences in the same
way the gpg's --edit-key menu does.
For "sig" records, this is the fingerprint of the key that
issued the signature. Note that this is only filled in if
@ -190,7 +190,7 @@ Example for a "tru" trust base record:
(gpg's option --marginals-needed)
7: Number of completely trusted users to introduce a new key signer.
(gpg's option --completes-needed)
8: Maximum depth of a certification chain.
8: Maximum depth of a certification chain.
*gpg's option --max-cert-depth)
The "spk" signature subpacket records have the fields:
@ -236,7 +236,7 @@ more arguments in future versions.
keyid if it is available. This is the case with CMS and might
eventually also be available for OpenPGP.
EXPKEYSIG <long_keyid_or_fpr> <username>
EXPKEYSIG <long_keyid_or_fpr> <username>
The signature with the keyid is good, but the signature was
made by an expired key. The username is the primary one
encoded in UTF-8 and %XX escaped. The fingerprint may be used
@ -334,7 +334,7 @@ more arguments in future versions.
TRUST_UNDEFINED <error token>
TRUST_NEVER <error token>
TRUST_MARGINAL [0 [<validation_model>]]
TRUST_FULLY [0 [<validation_model>]]
TRUST_FULLY [0 [<validation_model>]]
TRUST_ULTIMATE [0 [<validation_model>]]
For good signatures one of these status lines are emitted to
indicate the validity of the key used to create the signature.
@ -355,7 +355,7 @@ more arguments in future versions.
PKA_TRUST_BAD <mailbox>
Depending on the outcome of the PKA check one of the above
status codes is emitted in addition to a TRUST_* status.
Without PKA info available or
Without PKA info available or
SIGEXPIRED
This is deprecated in favor of KEYEXPIRED.
@ -423,17 +423,6 @@ more arguments in future versions.
The supplied passphrase was good and the secret key material
is therefore usable.
DECRYPTION_FAILED
The symmetric decryption failed - one reason could be a wrong
passphrase for a symmetrical encrypted message.
DECRYPTION_OKAY
The decryption process succeeded. This means, that either the
correct secret key has been used or the correct passphrase
for a conventional encrypted message was given. The program
itself may return an errorcode because it may not be possible to
verify a signature for some reasons.
NO_PUBKEY <long keyid>
NO_SECKEY <long keyid>
The key is not available
@ -452,7 +441,7 @@ more arguments in future versions.
1 := Entirely new key.
2 := New user IDs
4 := New signatures
8 := New subkeys
8 := New subkeys
16 := Contains private key.
The flags may be ORed.
@ -474,7 +463,7 @@ more arguments in future versions.
operation:
1 - verify
2 - encrypt
3 - decrypt
3 - decrypt
FILE_DONE
Marks the end of a file processing which has been started
@ -485,6 +474,22 @@ more arguments in future versions.
Mark the start and end of the actual decryption process. These
are also emitted when in --list-only mode.
DECRYPTION_INFO <mdc_method> <sym_algo>
Print information about the symmetric encryption algorithm and
the MDC method. This will be emitted even if the decryption
fails.
DECRYPTION_FAILED
The symmetric decryption failed - one reason could be a wrong
passphrase for a symmetrical encrypted message.
DECRYPTION_OKAY
The decryption process succeeded. This means, that either the
correct secret key has been used or the correct passphrase
for a conventional encrypted message was given. The program
itself may return an errorcode because it may not be possible to
verify a signature for some reasons.
BEGIN_ENCRYPTION <mdc_method> <sym_algo>
END_ENCRYPTION
Mark the start and end of the actual encryption process.
@ -505,7 +510,7 @@ more arguments in future versions.
"char" is the character displayed with no --status-fd enabled, with
the linefeed replaced by an 'X'. "cur" is the current amount
done and "total" is amount to be done; a "total" of 0 indicates that
the total amount is not known. The condition
the total amount is not known. The condition
TOATL && CUR == TOTAL
may be used to detect the end of an operation.
Well known values for WHAT:
@ -524,7 +529,7 @@ more arguments in future versions.
"learncard" Send by the agent and gpgsm while learing
the data of a smartcard.
"card_busy" A smartcard is still working
SIG_CREATED <type> <pubkey algo> <hash algo> <class> <timestamp> <key fpr>
A signature has been created using these parameters.
type: 'D' = detached
@ -536,7 +541,7 @@ more arguments in future versions.
Note, that TIMESTAMP may either be a number with seconds since
epoch or an ISO 8601 string which can be detected by the
presence of the letter 'T' inside.
KEY_CREATED <type> <fingerprint> [<handle>]
A key has been created
type: 'B' = primary and subkey
@ -557,13 +562,13 @@ more arguments in future versions.
is used. The format is suitable to be passed to the option
--override-session-key
NOTATION_NAME <name>
NOTATION_NAME <name>
NOTATION_DATA <string>
name and string are %XX escaped; the data may be split
among several NOTATION_DATA lines.
USERID_HINT <long main keyid> <string>
Give a hint about the user ID for a certain keyID.
Give a hint about the user ID for a certain keyID.
POLICY_URL <string>
string is %XX escaped
@ -587,7 +592,7 @@ more arguments in future versions.
8 := "Policy mismatch"
9 := "Not a secret key"
10 := "Key not trusted"
11 := "Missing certificate"
11 := "Missing certificate"
12 := "Missing issuer certificate"
Note that for historical reasons the INV_RECP status is also
@ -621,9 +626,9 @@ more arguments in future versions.
SUCCESS [<location>]
Postive confirimation that an operation succeeded. <location>
is optional but if given should not contain spaces.
is optional but if given should not contain spaces.
Used only with a few commands.
ATTRIBUTE <fpr> <octets> <type> <index> <count>
<timestamp> <expiredate> <flags>
@ -650,7 +655,7 @@ more arguments in future versions.
3 = Card with serialnumber detected
4 = No card available.
5 = No card reader available
6 = No card support available
6 = No card support available
PLAINTEXT <format> <timestamp> <filename>
This indicates the format of the plaintext that is about to be
@ -827,7 +832,7 @@ The format of this file is as follows:
relinquishes the GUI from implementing its own passphrase
entry code. This is a global option.
%no-ask-passphrase
Disable the ask-passphrase mode.
Disable the ask-passphrase mode.
%no-protection
With GnuPG 2.1 it is not anymore possible to specify a
passphrase for unattended key generation. The passphrase
@ -898,7 +903,7 @@ The format of this file is as follows:
information and which is also part of the fingerprint
calculation. Either a date like "1986-04-26" or a full
timestamp like "19860426T042640" may be used. The time is
considered to be UTC. If it is not given the current time
considered to be UTC. If it is not given the current time
is used.
Preferences: <string>
Set the cipher, hash, and compression preference values for
@ -1207,7 +1212,7 @@ Other Notes
OIDs below the GnuPG arc:
=========================
1.3.6.1.4.1.11591.2 GnuPG
1.3.6.1.4.1.11591.2 GnuPG
1.3.6.1.4.1.11591.2.1 notation
1.3.6.1.4.1.11591.2.1.1 pkaAddress
1.3.6.1.4.1.11591.2.12242973 invalid encoded OID
@ -1290,4 +1295,3 @@ A better way to do this would be a request like:
This can be implemented using Hurd's translator mechanism.
However, I think the whole key server stuff has to be re-thought;
I have some ideas and probably create a white paper.

3
g10/ChangeLog
View File

@ -1,5 +1,8 @@
2011-02-03 Werner Koch <wk@g10code.com>
* decrypt-data.c: Include status.h.
(decrypt_data): Emit a DECRYPTION_INFO status line.
* misc.c (has_invalid_email_chars): Relax mailbox name checking.
Fixes bug#1315.

58
g10/decrypt-data.c
View File

@ -30,6 +30,7 @@
#include "cipher.h"
#include "options.h"
#include "i18n.h"
#include "status.h"
static int mdc_decode_filter ( void *opaque, int control, IOBUF a,
@ -82,7 +83,7 @@ decrypt_data (ctrl_t ctrl, void *procctx, PKT_encrypted *ed, DEK *dek)
byte temp[32];
unsigned blocksize;
unsigned nprefix;
dfx = xtrycalloc (1, sizeof *dfx);
if (!dfx)
return gpg_error_from_syserror ();
@ -91,12 +92,20 @@ decrypt_data (ctrl_t ctrl, void *procctx, PKT_encrypted *ed, DEK *dek)
if ( opt.verbose && !dek->algo_info_printed )
{
if (!openpgp_cipher_test_algo (dek->algo))
log_info (_("%s encrypted data\n"),
log_info (_("%s encrypted data\n"),
openpgp_cipher_algo_name (dek->algo));
else
log_info (_("encrypted with unknown algorithm %d\n"), dek->algo );
dek->algo_info_printed = 1;
}
{
char buf[20];
snprintf (buf, sizeof buf, "%d %d", ed->mdc_method, dek->algo);
write_status_text (STATUS_DECRYPTION_INFO, buf);
}
rc = openpgp_cipher_test_algo (dek->algo);
if (rc)
goto leave;
@ -107,7 +116,7 @@ decrypt_data (ctrl_t ctrl, void *procctx, PKT_encrypted *ed, DEK *dek)
if ( ed->len && ed->len < (nprefix+2) )
BUG();
if ( ed->mdc_method )
if ( ed->mdc_method )
{
if (gcry_md_open (&dfx->mdc_hash, ed->mdc_method, 0 ))
BUG ();
@ -142,7 +151,7 @@ decrypt_data (ctrl_t ctrl, void *procctx, PKT_encrypted *ed, DEK *dek)
goto leave;
}
if (!ed->buf)
if (!ed->buf)
{
log_error(_("problem handling encrypted packet\n"));
goto leave;
@ -152,7 +161,7 @@ decrypt_data (ctrl_t ctrl, void *procctx, PKT_encrypted *ed, DEK *dek)
if ( ed->len )
{
for (i=0; i < (nprefix+2) && ed->len; i++, ed->len-- )
for (i=0; i < (nprefix+2) && ed->len; i++, ed->len-- )
{
if ( (c=iobuf_get(ed->buf)) == -1 )
break;
@ -160,7 +169,7 @@ decrypt_data (ctrl_t ctrl, void *procctx, PKT_encrypted *ed, DEK *dek)
temp[i] = c;
}
}
else
else
{
for (i=0; i < (nprefix+2); i++ )
if ( (c=iobuf_get(ed->buf)) == -1 )
@ -168,7 +177,7 @@ decrypt_data (ctrl_t ctrl, void *procctx, PKT_encrypted *ed, DEK *dek)
else
temp[i] = c;
}
gcry_cipher_decrypt (dfx->cipher_hd, temp, nprefix+2, NULL, 0);
gcry_cipher_sync (dfx->cipher_hd);
p = temp;
@ -179,7 +188,7 @@ decrypt_data (ctrl_t ctrl, void *procctx, PKT_encrypted *ed, DEK *dek)
rc = gpg_error (GPG_ERR_BAD_KEY);
goto leave;
}
if ( dfx->mdc_hash )
gcry_md_write (dfx->mdc_hash, temp, nprefix+2);
@ -196,7 +205,7 @@ decrypt_data (ctrl_t ctrl, void *procctx, PKT_encrypted *ed, DEK *dek)
if (dfx->eof_seen > 1 )
rc = gpg_error (GPG_ERR_INV_PACKET);
else if ( ed->mdc_method )
{
{
/* We used to let parse-packet.c handle the MDC packet but this
turned out to be a problem with compressed packets: With old
style packets there is no length information available and
@ -230,8 +239,8 @@ decrypt_data (ctrl_t ctrl, void *procctx, PKT_encrypted *ed, DEK *dek)
/* log_printhex("MDC message:", dfx->defer, 22); */
/* log_printhex("MDC calc:", gcry_md_read (dfx->mdc_hash,0), datalen); */
}
leave:
release_dfx_context (dfx);
return rc;
@ -255,7 +264,7 @@ mdc_decode_filter (void *opaque, int control, IOBUF a,
looking for the EOF on fixed data works only if the encrypted
packet is not followed by other data. This used to be a long
standing bug which was fixed on 2009-10-02. */
if ( control == IOBUFCTRL_UNDERFLOW && dfx->eof_seen )
{
*ret_len = 0;
@ -265,7 +274,7 @@ mdc_decode_filter (void *opaque, int control, IOBUF a,
{
assert (a);
assert (size > 44); /* Our code requires at least this size. */
/* Get at least 22 bytes and put it ahead in the buffer. */
if (dfx->partial)
{
@ -286,7 +295,7 @@ mdc_decode_filter (void *opaque, int control, IOBUF a,
buf[n] = c;
}
}
if (n == 44)
if (n == 44)
{
/* We have enough stuff - flush the deferred stuff. */
if ( !dfx->defer_filled ) /* First time. */
@ -301,7 +310,7 @@ mdc_decode_filter (void *opaque, int control, IOBUF a,
/* Fill up the buffer. */
if (dfx->partial)
{
for (; n < size; n++ )
for (; n < size; n++ )
{
if ( (c = iobuf_get(a)) == -1 )
{
@ -313,7 +322,7 @@ mdc_decode_filter (void *opaque, int control, IOBUF a,
}
else
{
for (; n < size && dfx->length; n++, dfx->length--)
for (; n < size && dfx->length; n++, dfx->length--)
{
c = iobuf_get(a);
if (c == -1)
@ -326,7 +335,7 @@ mdc_decode_filter (void *opaque, int control, IOBUF a,
if (!dfx->length)
dfx->eof_seen = 1; /* Normal EOF. */
}
/* Move the trailing 22 bytes back to the defer buffer. We
have at least 44 bytes thus a memmove is not needed. */
n -= 22;
@ -362,11 +371,11 @@ mdc_decode_filter (void *opaque, int control, IOBUF a,
}
*ret_len = n;
}
else if ( control == IOBUFCTRL_FREE )
else if ( control == IOBUFCTRL_FREE )
{
release_dfx_context (dfx);
}
else if ( control == IOBUFCTRL_DESC )
else if ( control == IOBUFCTRL_DESC )
{
*(char**)buf = "mdc_decode_filter";
}
@ -388,13 +397,13 @@ decode_filter( void *opaque, int control, IOBUF a, byte *buf, size_t *ret_len)
*ret_len = 0;
rc = -1;
}
else if ( control == IOBUFCTRL_UNDERFLOW )
else if ( control == IOBUFCTRL_UNDERFLOW )
{
assert(a);
if (fc->partial)
{
for (n=0; n < size; n++ )
for (n=0; n < size; n++ )
{
c = iobuf_get(a);
if (c == -1)
@ -407,7 +416,7 @@ decode_filter( void *opaque, int control, IOBUF a, byte *buf, size_t *ret_len)
}
else
{
for (n=0; n < size && fc->length; n++, fc->length--)
for (n=0; n < size && fc->length; n++, fc->length--)
{
c = iobuf_get(a);
if (c == -1)
@ -433,7 +442,7 @@ decode_filter( void *opaque, int control, IOBUF a, byte *buf, size_t *ret_len)
}
*ret_len = n;
}
else if ( control == IOBUFCTRL_FREE )
else if ( control == IOBUFCTRL_FREE )
{
release_dfx_context (fc);
}
@ -443,4 +452,3 @@ decode_filter( void *opaque, int control, IOBUF a, byte *buf, size_t *ret_len)
}
return rc;
}