Commit Graph

247 Commits

Author SHA1 Message Date
Jakub Jelen
fa60827840 pki: Support RSA verification using different hash algorithms
This changes the private API by adding one more argument to function

  pki_signature_from_blob()

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-08-31 14:18:34 +02:00
Jakub Jelen
18077673ac pki: Log really the signature algorithm type
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-08-01 16:05:37 +02:00
Aris Adamantiadis
db9da99a36 bignum: Make bignum_free safer
Signed-off-by: Aris Adamantiadis <aris@0xbadc0de.be>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2018-07-05 14:35:13 +02:00
Andreas Schneider
c3dac948c9 pki: Improve pubkey buffer handling form file
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-07-05 13:21:23 +02:00
Andreas Schneider
206f3ff895 Rest in Peace SSHv1
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
2018-06-29 14:41:14 +02:00
Andreas Schneider
1444ae5add pki: Fix random memory corruption
Fixes T78

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-06-29 09:30:59 +02:00
Andreas Schneider
ebcff9fd63 src: Use explicit_bzero() if available on the platform
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2018-02-12 14:41:27 +01:00
jvijtiuk
ea99215664 pki: Fix accidental ECC switch case fallthroughs into ed25119 cases when built without ECC
Summary:
When ed25519 was introduced in commit 93c7b81b4e,
the ed25519 case was added after the ecdsa case in src/pki.c. The ecdsa case seems to
have relied on falling through to report an error, when HAVE_ECC is not defined.
If HAVE_ECC is not defined, but ecdsa keys are used, with for example,
ssh_pki_import_pubkey_file, the code fallthroughs into the ed25519 case.

Signed-off-by: Juraj Vijtiuk <juraj.vijtiuk@sartura.hr>

Test Plan: Unit tests passed. No memory leaks found with valgrind.

Reviewers: asn

Differential Revision: https://bugs.libssh.org/D13
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2017-12-28 20:46:37 +01:00
Juraj Vijtiuk
778652460f add mbedtls crypto support
Summary:
This patch adds support for mbedTLS as a crypto backend for libssh.
mbedTLS is an SSL/TLS library that has been designed to mainly be used
in embedded systems.  It is loosely coupled and has a low memory
footprint.  mbedTLS also provides a cryptography library (libmbedcrypto)
that can be used without the TLS modules.
The patch is unfortunately quite big, since several new files had to
be added.
DSA is disabled at compile time, since mbedTLS doesn't support DSA
Patch review and feedback would be appreciated, and if any issues or
suggestions appear, I'm willing to work on them.

Signed-off-by: Juraj Vijtiuk <juraj.vijtiuk@sartura.hr>

Test Plan:
* The patch has been tested with a Debug and MinSizeRel build, with
libssh unit tests, client tests and the pkd tests.
* All the tests have been run with valgrind's memcheck, drd and helgrind
tools.
* The examples/samplessh client works when built with the patch.

Reviewers: asn, aris

Subscribers: simonsj

Differential Revision: https://bugs.libssh.org/D1
2017-12-28 11:17:39 +01:00
Andreas Schneider
de369b46b1 pki: Use byte mode for fopen()
BUG: https://red.libssh.org/issues/251

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2017-02-03 13:18:16 +01:00
Justus Winter
043560d7dd pki_gcrypt: Fix freeing of ECDSA signatures.
* src/pki.c (ssh_signature_free): Fix test for ECC using gcrypt.

Signed-off-by: Justus Winter <justus@g10code.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2016-11-09 18:20:40 +01:00
Andreas Schneider
5d1a8cd88b cmake: Check for io.h on Windows
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2016-11-06 11:57:52 +01:00
Justus Winter
f62cded9f0 pki_gcrypt: Handle ECDSA keys and signatures
* ConfigureChecks.cmake: Set 'HAVE_ECC' and 'HAVE_GCRYPT_ECC' if
applicable.
* include/libssh/pki.h (struct ssh_key_struct): Fix type of field
'ecdsa'.
(struct ssh_signature_struct): Likewise for 'ecdsa_sig'.
* src/pki.c (ssh_pki_key_ecdsa_name): Relax guard now that the used
function is also provided by the gcrypt backend.
(ssh_signature_free): Free ecdsa signature.
* src/pki_gcrypt.c (ECDSA_HEADER_{BEGIN,END}): New macros.
(privatekey_string_to_buffer): Handle ECDSA keys.
(pki_key_ecdsa_to_nid): New function.
(pki_key_ecdsa_nid_to_gcrypt_name): Likewise.
(pki_key_ecdsa_nid_to_name): Likewise.
(pki_key_ecdsa_nid_to_char): Likewise.
(pki_key_ecdsa_nid_from_name): Implement.
(asn1_oi_to_nid): New function.
(b64decode_ecdsa_privatekey): Likewise.
(pki_private_key_from_base64): Handle ECDSA keys.
(pki_pubkey_build_ecdsa): Implement.
(pki_key_dup): Handle ECDSA keys.
(pki_key_generate): Likewise.
(pki_key_generate_ecdsa): Implement.
(pki_key_compare): Handle ECDSA keys.
(pki_publickey_to_blob): Likewise.
(pki_signature_from_blob): Likewise.
(pki_signature_verify): Likewise.
(pki_do_sign): Likewise.
(pki_do_sign_sessionid): Likewise.

Signed-off-by: Justus Winter <justus@g10code.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2016-11-03 15:20:30 +01:00
Justus Winter
92fdf31d29 pki: Fix debug message
* src/pki.c (ssh_pki_signature_verify_blob): Fix debug message.

Signed-off-by: Justus Winter <justus@g10code.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2016-05-02 11:55:39 +02:00
Justus Winter
926b9e937b pki: Mention relevant RFC for EC key encoding
* src/pki.c (ssh_pki_export_pubkey_blob): Mention relevant RFC for EC
key encoding.

Signed-off-by: Justus Winter <justus@g10code.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2016-03-21 18:39:46 +01:00
Younes Serraj
66c6ae1a55 pki: Fixed documentation about return value.
Documentation now is congruent with the code:
- SSH_OK is returned on success,
- SSH_ERROR is returned on error.

Signed-off-by: Younes Serraj <younes.serraj@gmail.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
2016-02-23 08:12:34 +01:00
Fabiano Fidêncio
d1d003c232 buffer: use ssh_buffer_get() instead of ssh_buffer_get_begin()
This commit is a preparatory stage for removing ssh_buffer_get_begin().
Note that removing ssh_buffer_get_begin() doesn't break API
compatibility, as this functions has never been exposed (it only has the
LIBSSH_API prefix).

Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2016-01-19 11:31:08 +01:00
Fabiano Fidêncio
05fd0acf45 buffer: do not use ssh_buffer_get_rest_len()
As ssh_buffer_get_len() actually calls ssh_buffer_get_rest_len(), let's
just use the first one. This is a preparatory step for removing
ssh_buffer_get_rest_len().

Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2016-01-19 11:31:08 +01:00
Fabiano Fidêncio
954341dd1f buffer: rename ssh_buffer_get_rest() to ssh_buffer_get()
Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2016-01-19 11:31:07 +01:00
Fabiano Fidêncio
adc8c20ac1 cleanup: use ssh_ prefix in the buffer (non-static) functions
Having "ssh_" prefix in the functions' name will avoid possible clashes
when compiling libssh statically.

Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2016-01-19 11:31:07 +01:00
Fabiano Fidêncio
0d7da3207f Fix a bunch of -Wmaybe-uninitialized
Reviewed-By: Aris Adamantiadis <aris@0xbadc0de.be>
2015-12-17 15:01:05 +01:00
Andreas Schneider
11f43df873 pki: Fix a memory leak on error in ssh_pki_copy_cert_to_privkey()
CID 1323516

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2015-09-09 09:34:22 +02:00
Andreas Schneider
1254ed1833 pki: Fix a memory leak in pki_import_cert_buffer()
CID #1323517
2015-09-09 09:32:40 +02:00
Axel Eppe
bdfe6870f6 pki: Add certificate loading functions
- ssh_pki_import_cert_base64()
- ssh_pki_import_cert_file()
- ssh_pki_import_cert_blob()
Those functions are currently simple wrappers around their pubkey counterpart.

- ssh_pki_copy_cert_to_privkey()
This function copies the cert-specific data to a private key.

Signed-off-by: Axel Eppe <aeppe@google.com>
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2015-09-07 13:30:14 +02:00
Axel Eppe
9775f78ab2 pki: Add Add new pki_import_cert_buffer function
Signed-off-by: Axel Eppe <aeppe@google.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2015-09-07 13:29:52 +02:00
Axel Eppe
6da4e21065 pki: Add rsa, dss certificate key type definitions
- Add rsa/dsa (ssh-{rsa,dss}-cert-v01@openssh.com) as key types.
- Add a cert_type member in the ssh_key struct.

Signed-off-by: Axel Eppe <aeppe@google.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2015-09-07 13:29:23 +02:00
Andreas Schneider
3b0b1c3ee3 pki: Use the standard logging function
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2015-09-07 10:57:34 +02:00
Andreas Schneider
e1081796af pki: Fix return values of ssh_key_is_(public|private)
Thanks to Kevin Haake <khaake@red-cocoa.com>

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2015-08-10 13:57:28 +02:00
Aris Adamantiadis
46bc11f977 ed25519: Add support to export OpenSSH container keys
Signed-off-by: Aris Adamantiadis <aris@0xbadc0de.be>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2015-02-02 14:45:52 +01:00
Aris Adamantiadis
3ec3a926e5 ed25519: Add support o import OpenSSH container keys
Signed-off-by: Aris Adamantiadis <aris@0xbadc0de.be>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2015-02-02 14:45:52 +01:00
Andreas Schneider
9a7d450098 pki: Make sure sig is not used unintialized.
BUG: https://red.libssh.org/issues/167

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
2015-01-20 19:31:12 +01:00
Jon Simons
59da8dab50 pki: check ssh_buffer_pack return in ssh_pki_do_sign
Check the 'ssh_buffer_pack' return in ssh_pki_do_sign for the ED25519 case.

Signed-off-by: Jon Simons <jon@jonsimons.org>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2014-10-02 08:28:05 +02:00
Jon Simons
7edbedf0dd pki: fail when pubkey buffer length is not ED25519_PK_LEN
Fail fast in 'pki_import_pubkey_buffer' for the ED25519 case if a buffer
sized ED25519_PK_LEN can not be retrieved.  Before, the 'memcpy' could
have read beyond the bounds of 'ssh_string_data(pubkey)'.

Signed-off-by: Jon Simons <jon@jonsimons.org>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2014-10-02 08:27:05 +02:00
Aris
93c7b81b4e ed25519: Generate, sign and verify keys.
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2014-09-07 22:07:34 +02:00
Andreas Schneider
83633d539e pki: Fix build without ECC support.
Signed-off-by: Andreas Schneider <asn@samba.org>
2014-05-09 08:55:49 +02:00
Hani Benhabiles
2c7dfb02a8 Small documentation fix.
Signed-off-by: Hani Benhabiles <hani@linux.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2014-05-06 08:52:55 +02:00
Andreas Schneider
2884bbf5b1 pki: Correctly update the ECDSA keytype. 2014-04-23 11:16:28 +02:00
Andreas Schneider
f48a99b97c pki: Move ssh_pki_key_ecdsa_name() to the correct file. 2014-04-23 11:15:05 +02:00
Alan Dunn
15f3988bc8 pki: Use SHA-2 for session ID signing with ECDSA keys
Previously, SHA-1 was used always.

BUG: https://red.libssh.org/issues/148

Signed-off-by: Alan Dunn <amdunn@gmail.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2014-03-12 14:13:29 +01:00
Andreas Schneider
370d4b014d pki: Fix the build on OpenSolaris. 2014-02-12 09:39:49 +01:00
Andreas Schneider
7bd5e4101c pki: Fix memory leak with ecdsa signatures. 2014-02-11 10:32:50 +01:00
Andreas Schneider
cb9786b3ae src: Rename buffer_add_data() to ssh_buffer_add_data(). 2014-01-19 20:55:55 +01:00
Aris Adamantiadis
aecd952d18 update copyright information 2014-01-07 15:18:15 +01:00
Andreas Schneider
cdd7a6cb8d pki: Fix a memory leak.
CID #1132819
2013-11-28 09:09:45 +01:00
Andreas Schneider
136efd6ed5 pki: Add ssh_pki_import_privkey_file(). 2013-11-27 22:54:13 +01:00
Andreas Schneider
33890daf41 pki: Add support for ECDSA private key signing. 2013-10-18 23:22:24 +02:00
Andreas Schneider
ac4c5699b1 pki: Add the type as a char pointer. 2013-10-18 23:22:24 +02:00
Andreas Schneider
33cb1bc08b doc: Improve the PKI documentation a bit. 2013-09-10 06:59:25 +02:00
Andreas Schneider
ebdd0c6ac1 src: Migrate to SSH_LOG. 2013-07-14 12:44:26 +02:00
Aris Adamantiadis
bf5e5eebd7 pki: fix comments 2013-07-13 23:01:30 +02:00