Hanno Becker
2cca6f3290
Always deduce N from P, Q in mbedtls_rsa_complete
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Previously, a parameter set of (-, P, Q, -, E) was completed, but (-, P, Q, D,
E) wasn't - this is odd.
2017-09-29 11:54:05 +01:00
Hanno Becker
45037ceac5
Add check for presence of relevant parameters in mbedtls_rsa_private
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If CRT is used, check for the presence N, P, Q, D, E, DP, DQ and QP. If CRT is
not used, check for N, P, Q, D, E only.
2017-09-14 08:02:14 +01:00
Hanno Becker
b269a8584a
Change mbedtls_rsa_check_privkey to use new helper functions
2017-08-25 08:35:09 +01:00
Hanno Becker
d9431a7817
Minor comments improvement
2017-08-25 08:35:09 +01:00
Hanno Becker
d363799a9d
Add mbedtls_rsa_validate_crt
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This commit adds the function mbedtls_rsa_validate_crt for validating a set of CRT parameters. The function
mbedtls_rsa_check_crt is simplified accordingly.
2017-08-25 08:35:09 +01:00
Hanno Becker
d56d83a7f3
Remove double-checking code from rsa_deduce_moduli and rsa_complete
2017-08-25 08:35:08 +01:00
Hanno Becker
750e8b4596
Rename rsa_check_params->rsa_validate_params and change error codes
2017-08-25 08:34:55 +01:00
Hanno Becker
fb81c0ec2e
Guard primality checks in RSA module by MBEDTLS_GENPRIME
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Primality testing is guarded by the configuration flag MBEDTLS_GENPRIME and used in the new RSA helper functions. This
commit adds a corresponding preprocessor directive.
2017-08-24 06:55:11 +01:00
Hanno Becker
ab3773123c
Add support for alternative RSA implementations
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Alternative RSA implementations can be provided by defining MBEDTLS_RSA_ALT in
config.h, defining an mbedtls_rsa_context struct in a new file rsa_alt.h and
re-implementing the RSA interface specified in rsa.h.
Through the previous reworkings, the adherence to the interface is the only
implementation obligation - in particular, implementors are free to use a
different layout for the RSA context structure.
2017-08-23 16:24:51 +01:00
Hanno Becker
6345dd33b9
Adapt rsa_check_privkey to deal with NO_CRT option
2017-08-23 16:17:28 +01:00
Hanno Becker
bee3aaeb50
Adapt rsa_gen_key to deal with RSA_NO_CRT option
2017-08-23 16:17:28 +01:00
Hanno Becker
dc95c890ad
Adapt rsa_deduce_crt to deal with RSA_NO_CRT option
2017-08-23 16:17:28 +01:00
Hanno Becker
33c30a0c7e
Adapt rsa_copy and rsa_free to deal with RSA_NO_CRT option
2017-08-23 16:17:28 +01:00
Hanno Becker
23344b5fcc
Adapt rsa_complete to deal with RSA_NO_CRT option
2017-08-23 16:17:28 +01:00
Hanno Becker
83aad1fa86
Adapt gen_key example program to new RSA interface
2017-08-23 16:17:27 +01:00
Hanno Becker
3a701161ff
Adapt RSA selftest to new RSA interface
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This commit replaces direct manipulation of structure fields in the RSA selftest
by calls to the extended interface.
2017-08-23 15:07:40 +01:00
Hanno Becker
617c1aeb18
Implement new RSA interface functions
2017-08-23 14:47:22 +01:00
Hanno Becker
e2e8b8da1d
Implement RSA helper functions
2017-08-23 14:44:33 +01:00
Manuel Pégourié-Gonnard
b86b143030
Merge remote-tracking branch 'restricted/iotssl-1138-rsa-padding-check-restricted' into development-restricted
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* restricted/iotssl-1138-rsa-padding-check-restricted:
RSA PKCS1v1.5 verification: check padding length
2017-06-08 20:31:06 +02:00
Manuel Pégourié-Gonnard
a0bf6ecfc3
Merge remote-tracking branch 'restricted/IOTSSL-1366/development-restricted' into development-restricted
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* restricted/IOTSSL-1366/development-restricted:
More length checks in RSA PKCS1v15 verify
More length checks in RSA PKCS1v15 verify
2017-06-08 20:24:29 +02:00
Gilles Peskine
18ac716021
RSA: wipe more stack buffers
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MGF mask and PSS salt are not highly sensitive, but wipe them anyway
for good hygiene.
2017-05-16 10:22:37 +01:00
Gilles Peskine
4a7f6a0ddb
RSA: wipe stack buffers
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The RSA private key functions rsa_rsaes_pkcs1_v15_decrypt and
rsa_rsaes_oaep_decrypt put sensitive data (decryption results) on the
stack. Wipe it before returning.
Thanks to Laurent Simon for reporting this issue.
2017-05-16 10:22:37 +01:00
Janos Follath
f9203b4139
Add exponent blinding to RSA with CRT
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The sliding window exponentiation algorithm is vulnerable to
side-channel attacks. As a countermeasure we add exponent blinding in
order to prevent combining the results of different measurements.
This commit handles the case when the Chinese Remainder Theorem is used
to accelerate the computation.
2017-05-16 10:22:37 +01:00
Janos Follath
e81102e476
Add exponent blinding to RSA without CRT
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The sliding window exponentiation algorithm is vulnerable to
side-channel attacks. As a countermeasure we add exponent blinding in
order to prevent combining the results of fifferent measurements.
This commits handles the case when the Chinese Remainder Theorem is NOT
used to accelerate computations.
2017-05-16 10:22:37 +01:00
Manuel Pégourié-Gonnard
c1380de887
RSA PKCS1v1.5 verification: check padding length
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The test case was generated by modifying our signature code so that it
produces a 7-byte long padding (which also means garbage at the end, so it is
essential in to check that the error that is detected first is indeed the
padding rather than the final length check).
2017-05-11 13:10:13 +02:00
Gilles Peskine
e7e7650480
More length checks in RSA PKCS1v15 verify
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Added one check that I'd missed, and made the style more uniform.
2017-05-04 12:48:39 +02:00
Gilles Peskine
0e17eb05f8
More length checks in RSA PKCS1v15 verify
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Tighten ASN.1 parsing of RSA PKCS#1 v1.5 signatures, to avoid a
potential Bleichenbacher-style attack.
2017-05-03 18:56:10 +02:00
Janos Follath
ef44178474
Restore P>Q in RSA key generation ( #558 )
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The PKCS#1 standard says nothing about the relation between P and Q
but many libraries guarantee P>Q and mbed TLS did so too in earlier
versions.
This commit restores this behaviour.
2016-10-13 00:25:07 +01:00
Simon Butcher
ab069c6b46
Merge branch 'development' into development-restricted
2016-06-23 21:42:26 +01:00
Brian J Murray
e7be5bdb96
Fixed unchecked calls to mbedtls_md_setup in rsa.c ( #502 )
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* Fixed unchecked calls to mbedtls_md_setup in rsa.c:
* style fixes
2016-06-23 20:57:03 +01:00
Simon Butcher
f991128d40
Revert accidental changes to file mode of rsa.c
2016-06-09 13:41:28 +01:00
Janos Follath
a338691b46
Merge branch 'development' into development-restricted
2016-06-07 09:24:41 +01:00
Simon Butcher
50cdede726
Revert accidental changes to file mode of rsa.c
2016-06-06 20:15:33 +01:00
Janos Follath
04b591ee79
Merge branch 'development' for weekly test report.
2016-05-31 10:18:41 +01:00
Simon Butcher
9c22e7311c
Merge branch 'development'
2016-05-24 13:25:46 +01:00
Simon Butcher
65b1fa6b07
Fixes warnings found by Clang static analyser
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Also removes annotations in the code to avoid warnings which don't appear to
be needed.
2016-05-23 23:18:26 +01:00
Brian Murray
930a3701e7
fix indentation in output of selftest.c
2016-05-23 14:29:32 +01:00
Paul Bakker
38d188896c
Cleanup ifdef statements
2016-05-23 14:29:31 +01:00
Nicholas Wilson
e735303026
Shut up a few clang-analyze warnings about use of uninitialized variables
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The functions are all safe, Clang just isn't clever enough to realise
it.
2016-05-23 14:29:28 +01:00
Simon Butcher
94bafdf834
Merge branch 'development'
2016-05-18 18:40:46 +01:00
Simon Butcher
c21bec8af4
Merge branch 'development'
2016-05-16 16:15:20 +01:00
Paul Bakker
21cc5741cf
Cleanup ifdef statements
2016-05-12 12:46:28 +01:00
Paul Bakker
f4743a6f5e
Merge pull request #457 from NWilson/clang-analyze-fixes
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Clang analyze fixes
2016-05-11 20:20:42 +02:00
Simon Butcher
2300776816
Merge branch 'development'
2016-04-19 10:39:36 +01:00
Janos Follath
1ed9f99ef3
Fix null pointer dereference in the RSA module.
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Introduced null pointer checks in mbedtls_rsa_rsaes_pkcs1_v15_encrypt
2016-04-19 10:16:31 +01:00
Simon Butcher
3f5c875654
Adds test for odd bit length RSA key size
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Also tidy up ChangeLog following review.
2016-04-15 19:06:59 +01:00
Janos Follath
10c575be3e
Fix odd bitlength RSA key generation
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Fix issue that caused a hang up when generating RSA keys of odd
bitlength.
2016-04-15 18:49:13 +01:00
Nicholas Wilson
409401c044
Shut up a few clang-analyze warnings about use of uninitialized variables
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The functions are all safe, Clang just isn't clever enough to realise
it.
2016-04-13 11:56:22 +01:00
Simon Butcher
078bcdd6f6
Merge branch 'IOTSSL-628-BufferOverread'
2016-03-16 22:53:11 +00:00
Simon Butcher
0203745e23
Swap C++ comments to C for style consistency in rsa.c
2016-03-09 21:06:20 +00:00