Change-Id: Ie9a0039931a1a8d48a82c11ef5c58d6ee084ca4c
Reviewed-on: https://boringssl-review.googlesource.com/13070
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <alangley@gmail.com>
Avoid the X509_ALGOR dependency entirely. The public API is still using
the legacy ASN.1 structures for now, but the conversions are lifted to
the API boundary. Once we resolve that and the OID table dependency,
this module will no longer block unshipping crypto/asn1 and friends from
Chromium.
This changes the calling convention around the two kinds of PBE suites
we support. Each PBE suite provides a free-form encrypt_init function to
setup an EVP_CIPHER_CTX and write the AlgorithmIdentifer to a CBB. It
then provides a common decrypt_init function which sets up an
EVP_CIPHER_CTX given a CBS of the parameter. The common encrypt code
determines how to call which encrypt_init function. The common decrypt
code parses the OID out of the AlgorithmIdentifer and then dispatches to
decrypt_init.
Note this means the encryption codepath no longer involves parsing back
out a AlgorithmIdentifier it just serialized. We don't have a good story
to access an already serialized piece of a CBB in progress (reallocs can
invalidate the pointer in a CBS), so it's easier to cut this step out
entirely.
Also note this renames the "PBES1" schemes from PKCS#5 to PKCS#12. This
makes it easier to get at the PKCS#12 key derivation hooks. Although
PKCS#12 claims these are variants of PKCS#5's PBES1, they're not very
related. PKCS#12 swaps out the key derivation and even defines its own
AlgorithmIdentifier parameter structure (identical to the PKCS#5 PBES1
one). The only thing of PBES1 that survives is the CBC mode padding
scheme, which is deep in EVP_CIPHER for us. (Of course, all this musing
on layering is moot because we don't implement non-PKCS#12 PBES1 schemes
anyway.)
This also moves some of the random API features (default iteration
count, default salt generation) out of the PBE suites and into the
common code.
BUG=54
Change-Id: Ie96924c73a229be2915be98eab680cadd17326db
Reviewed-on: https://boringssl-review.googlesource.com/13069
Reviewed-by: Adam Langley <alangley@gmail.com>
This gets us closer to decoupling from crypto/asn1.
BUG=54
Change-Id: I06ec04ed3cb47c2f56a94c6defa97398bfd0e013
Reviewed-on: https://boringssl-review.googlesource.com/13066
Reviewed-by: Adam Langley <alangley@gmail.com>
This is not quite an end state (it still outputs an X509_ALGOR, the way
the generated salt is fed into key derivation is odd, and it uses the
giant OID table), but replaces a large chunk of it.
BUG=54
Change-Id: I0a0cca13e44e6a09dfaf6aed3b357cb077dc46d1
Reviewed-on: https://boringssl-review.googlesource.com/13065
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Many of these parameters are constants.
Change-Id: I148dbea0063e478a132253f4e9dc71d5d20320c2
Reviewed-on: https://boringssl-review.googlesource.com/13064
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This is a very basic test, but it's something.
Change-Id: Ic044297e97ce5719673869113ce581de4621ebbd
Reviewed-on: https://boringssl-review.googlesource.com/13061
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <alangley@gmail.com>
libcrypto can now be split in two, with everything that depends on
crypto/asn1 in a separate library. That said, Chromium still needs
crypto/pkcs8 to be implemented with CBS/CBB first. (Also libssl and
anything which uses X509* directly.)
BUG=54
Change-Id: Iec976ae637209882408457e94a1eb2465bce8d56
Reviewed-on: https://boringssl-review.googlesource.com/13059
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Change-Id: Iad9b0898b3a602fc2e554c4fd59a599c61cd8ef7
Reviewed-on: https://boringssl-review.googlesource.com/13063
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <alangley@gmail.com>
They're not called externally. Unexporting these will make it easier to
rewrite the PKCS{5,8,12} code to use CBS/CBB rather than X509_ALGOR.
Getting rid of those callers in Chromium probably won't happen for a
while since it's in our on-disk formats. (And a unit test for some NSS
client cert glue uses it.)
BUG=54
Change-Id: Id4148a2ad567484782a6e0322b68dde0619159fc
Reviewed-on: https://boringssl-review.googlesource.com/13062
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <alangley@gmail.com>
This includes examples with both the NULL and empty passwords, thanks to
PKCS#12's password ambiguity.
Change-Id: Iae31840c1d31929fa9ac231509acaa80ef5b74bb
Reviewed-on: https://boringssl-review.googlesource.com/13060
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <alangley@gmail.com>
The motiviation is that M2Crypto passes an ASN1_GENERALIZEDTIME to
this function. This is not distinct from ASN1_UTCTIME (both are
asn1_string_st), but ASN1_GENERALIZEDTIME uses a 4-digit year in its
string representation, whereas ASN1_UTCTIME uses a 2-digit year.
ASN1_UTCTIME_print previously did not return an error on such inputs.
So, stricten (?) the function, ensuring that it checks for trailing
data, and rejects values that are invalid for their place. Along the
way, clean it up and add tests.
Change-Id: Ia8298bed573f2acfdab96638ea69c78b5bba4e4b
Reviewed-on: https://boringssl-review.googlesource.com/13082
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Towards an eventual goal of opaquifying BoringSSL structs, we want
our consumers -- in this case, Android's libcore -- to not directly
manipulate BigNums; and it would be convenient for them if we would
perform the appropriate gymnastics to interpret little-endian byte
streams.
It also seems a priori a bit strange to have only big-endian varieties
of BN byte-conversions.
This CL provides little-endian equivalents of BN_bn2bin_padded
and BN_bin2bn.
BUG=97
Change-Id: I0e92483286def86d9bd71a46d6a967a3be50f80b
Reviewed-on: https://boringssl-review.googlesource.com/12641
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Passing in an array of scalars was removed some time ago, but a few
remnants of it remain.
Change-Id: Id75abedf60b1eab59f24bf7232187675b63291ab
Reviewed-on: https://boringssl-review.googlesource.com/13056
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This is a remnant of signature EVP_MDs. Detach them from
EVP_get_digestby{nid,obj}. Nothing appears to rely on this for those two
functions. Alas, Node.js appears to rely on it for EVP_get_digestbyname,
so keep that working.
This avoids causing every consumer's parsing to be unintentionally lax.
It also means fewer OIDs to transcribe when detaching the last of
libcrypto from the legacy ASN.1 stack and its giant OID table.
Note this is an externally visible change. There was one consumer I had
to fix, but otherwise everything handled things incorrectly due to this
quirk, so it seemed better to just fix the API rather than fork off a
second set.
Change-Id: I705e073bc05d946e71cd1c38acfa5e3c6b0a22b4
Reviewed-on: https://boringssl-review.googlesource.com/13058
Commit-Queue: David Benjamin <davidben@google.com>
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Passing in an array of scalars was removed some time ago, but a few
remnants of it remain.
Change-Id: Ia51dcf1f85116ec663e657cc8dbef7f23ffa2edb
Reviewed-on: https://boringssl-review.googlesource.com/13055
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
Instead, use BN_mod_exp_mont_consttime of p - 2. This removes two more
call sites sensitive to BN_FLG_CONSTTIME. We're down to just that last
BN_mod_inverse modulo φ(n). (Sort of. It's actually not sensitive
because even mod inverses always hit the other codepath. Perhaps we
should just leave it alone.)
Note this comes with a slight behavior change. The BN_MONT_CTXs are
initialized a little earlier. If a caller calls RSA_generate_* and then
reaches into the struct to scrap all the fields on it, they'll get
confused. Before, they had to perform an operation on it to get
confused. This is a completely ridiculous thing to do.
Since we do this a lot, this introduces some convenience functions for
doing the Fermat's Little Theorem mod inverse and fixes a leak in the
DSA code should computing kinv hit a malloc error.
BUG=125
Change-Id: Iafcae2fc6fd379d161f015c90ff7050e2282e905
Reviewed-on: https://boringssl-review.googlesource.com/12925
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
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There's an authenticator, so test that AES_unwrap_key notices invalid
inputs.
Change-Id: Icbb941f91ffd9c91118f956fd74058d241f91ecb
Reviewed-on: https://boringssl-review.googlesource.com/13047
Reviewed-by: David Benjamin <davidben@google.com>
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(Imported from upstream's 13ab87083af862e4af752efa4b0552149ed2cc19.)
Change-Id: I2f7cf8454d28d47f5ca19544479b2ab98143a3ef
Reviewed-on: https://boringssl-review.googlesource.com/13048
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
This was noticed by observing we had one line of missing test coverage
in polyval.c. CRYPTO_POLYVAL_update_blocks acts 32 blocks at a time and
all existing test vectors are smaller than that.
Test vector obtained by just picking random values and seeing what our
existing implementation did if I modified CRYPTO_POLYVAL_update_blocks
to consume many more blocks at a time. Then I fixed the bug and ensured
the answer was still the same.
Change-Id: Ib7002dbc10952229ff42a17132c30d0e290d4be5
Reviewed-on: https://boringssl-review.googlesource.com/13041
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
This is a memory error for anything other than LHASH_OF(char), which
does not exist.
No code outside the library creates (or even queries) an LHASH, so we
can change this module freely.
Change-Id: Ifbc7a1c69a859e07650fcfaa067bdfc68d83fbbc
Reviewed-on: https://boringssl-review.googlesource.com/12978
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
Use it to compare the contents of lh and dummy_lh are identical. Leave a
TODO for testing other LHASH cases.
Change-Id: Ifbaf17c196070fdff1530ba0e284030527855f5d
Reviewed-on: https://boringssl-review.googlesource.com/12977
Reviewed-by: Adam Langley <agl@google.com>
Change-Id: I0e8a24367cd33fa4aed2ca15bd369b8697f538e6
Reviewed-on: https://boringssl-review.googlesource.com/12974
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
Use a std::map as the dummy lhash and use unique_ptr. This also improves
the test to check on pointer equality; we wish to ensure the lhash
stores the particular pointer value we asked for.
dummy_lh now also owns the pointers. It makes things simpler and since
LHASH doesn't free things, we weren't getting anything out of testing
that.
Change-Id: I97159175ca79a5874586650f272a7846100395e1
Reviewed-on: https://boringssl-review.googlesource.com/12976
Reviewed-by: Adam Langley <agl@google.com>
No source changes, just a rename.
Change-Id: Iaef406d2a04dc8c68c94eb2a98eec6378eaeab66
Reviewed-on: https://boringssl-review.googlesource.com/12975
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
BUG=97
Change-Id: I4799cc99511e73af44def1d4daa36a8b4699f62d
Reviewed-on: https://boringssl-review.googlesource.com/12904
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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Change-Id: If565a5fdfa0f314422aa26c2e8f869965ca08c1b
Reviewed-on: https://boringssl-review.googlesource.com/12969
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <alangley@gmail.com>
Chaining doesn't make much sense. This means we have a discontinuity
when buffer BIOs are empty. For a general filter BIO, this isn't even
meaningful. E.g., the base64 BIO's next_bio doesn't use the same units
(There's one consumer which does call BIO_pending on a base64 BIO, hits
this case, and is only working on accident, I've left it alone for this
CL until we can fix that consumer.)
The DTLS code, notably, assumes BIO_wpending to only report what's in
the buffer BIO. Ideally we'd get rid of the buffer BIO (I'll work on
this next), but, in the meantime, get the sizing right. The immediate
motivation is ssl_test using a BIO pair for DTLS doesn't work. We've
just been lucky none of the tests have been near the MTU.
The buffer BIO is actually unused outside of the SSL stack, so this
shouldn't break external consumers. But for the base64 BIO consumer
mentioned above, I see nothing else which relies on this BIO_[w]pending
chaining.
Change-Id: I6764df8ede0f89fe73c774a8f7c9ae4c054d4184
Reviewed-on: https://boringssl-review.googlesource.com/12964
Reviewed-by: Adam Langley <agl@google.com>
The perl script is a little nuts. obj_dat.pl actually parses the header
file that objects.pl emits to figure out what all the objects are.
Replace it all with a single Go script.
BUG=16
Change-Id: Ib1492e22dbe4cf9cf84db7648612b156bcec8e63
Reviewed-on: https://boringssl-review.googlesource.com/12963
Reviewed-by: Adam Langley <agl@google.com>
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I thought I'd rewritten this, but apparently didn't. The old version
dated to a prior iteration which used macros.
Change-Id: Idefbdb2c11700a44dd5b0733b98efec102b10dd2
Reviewed-on: https://boringssl-review.googlesource.com/12968
Reviewed-by: Adam Langley <agl@google.com>
Most C standard library functions are undefined if passed NULL, even
when the corresponding length is zero. This gives them (and, in turn,
all functions which call them) surprising behavior on empty arrays.
Some compilers will miscompile code due to this rule. See also
https://www.imperialviolet.org/2016/06/26/nonnull.html
Add OPENSSL_memcpy, etc., wrappers which avoid this problem.
BUG=23
Change-Id: I95f42b23e92945af0e681264fffaf578e7f8465e
Reviewed-on: https://boringssl-review.googlesource.com/12928
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
This avoids having more generated bits. The table is quite small,
especially so when we take out anything we don't implement. There's no
real need to do the binary search. (Exotic things like GOST, the legacy
NID_rsa and NID_dsa_2 spellings of RSA and DSA, and hash functions we
don't implement.)
Mostly this saves me from having to reimplement obj_xref.pl.
(obj_xref.pl processes nid.h, formerly obj_mac.h, so we can't just use
the existing one and still change nid.h.)
Change-Id: I90911277e691a8b04ea8930f3f314d517f314d29
Reviewed-on: https://boringssl-review.googlesource.com/12962
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
Chromium on Linux builds against libstdc++'s debug mode which makes
clang unhappy due to:
../crypto/bytestring/bytestring_test.cc:910:7: error: chosen constructor
is explicit in copy-initialization
{},
^~
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/debug/vector:79:7:
note: constructor declared here
vector(const _Allocator& __a = _Allocator())
^
I believe this was fixed here, but it's too recent:
36f540c70b
Change-Id: I2942d153e1278785c3b81294bc99b86f297cf719
Reviewed-on: https://boringssl-review.googlesource.com/12967
Reviewed-by: Adam Langley <agl@google.com>
X509_STORE_set0_additional_untrusted allows one to set a stack of
additional untrusted certificates that can be used during chain
building. These will be merged with the untrusted certificates set on
the |X509_STORE_CTX|.
Change-Id: I3f011fb0854e16a883a798356af0a24cbc5a9d68
Reviewed-on: https://boringssl-review.googlesource.com/12980
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Simplify the code, and in particular make |BN_div|, |BN_mod|, and
|BN_nnmod| insensitive to |BN_FLG_CONSTTIME|. This improves the
effectiveness of testing by reducing the number of branches that are
likely to go untested or less tested.
There is no performance-sensitive code that uses BN_div but doesn't
already use BN_FLG_CONSTTIME except RSA signature verification and
EC_GROUP creation. RSA signature verification, ECDH, and ECDSA
performance aren't significantly different with this change.
Change-Id: Ie34c4ce925b939150529400cc60e1f414c7676cd
Reviewed-on: https://boringssl-review.googlesource.com/9105
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
MSAN doesn't hook |syscall| and thus doesn't know that the kernel has
filled the output buffer when |getrandom| is called.
This change tells MSAN to trust that the memory that |getrandom| writes
to has been initialised. This should avoid false-positives when code
operates on |RAND_bytes| output.
Change-Id: I0a74ebb21bcd1de1f28eda69558ee27f82db807a
Reviewed-on: https://boringssl-review.googlesource.com/12903
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This reverts commit 97db926cf7e9da7bdf1e52def7101ba8c68786c0,
effectively unreverting the two changes that it contained. A subsequent
change will fix this code for MSAN.
Change-Id: I54a82b667b7a4208c7a960aa28b01cb246bc78c7
Reviewed-on: https://boringssl-review.googlesource.com/12902
Commit-Queue: Adam Langley <alangley@gmail.com>
Reviewed-by: David Benjamin <davidben@google.com>
Get one step closer to removing the dependency on |BN_div| from most
programs. Also get one step closer to a constant-time implementation of
|BN_MONT_CTX_set|; we now "just" need to create a constant-time variant
of |BN_mod_lshift1_quick|.
Note that this version might actually increase the side channel signal,
since the variance in timing in |BN_div| is probably less than the variance
from the many conditional reductions in the new method.
On one Windows x64 machine, the speed of RSA verification using the new
version is not too different from the speed of the old code. However,
|BN_div| is generally slow on Windows x64 so I expect this isn't faster
on all platforms. Regardless, we generally consider ECDSA/EdDSA
signature verification performance to be adaquate and RSA signature
verification is much, much faster even with this change.
For RSA signing the performance is not a significant factor since
performance-sensitive applications will cache the |RSA| structure and
the |RSA| structure will cache the Montgomery contexts.
Change-Id: Ib14f1a35c99b8da435e190342657f6a839381a1a
Reviewed-on: https://boringssl-review.googlesource.com/10520
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Call |RSA_check_key| after parsing an RSA private key in order to
verify that the key is consistent. This is consistent with ECC key
parsing, which does a similar key check.
Call |RSA_check_key| after key generation mostly as a way of
double-checking the key generation was done correctly. A similar check
was not added to |EC_KEY_generate| because |EC_KEY_generate| is used
for generating ephemeral ECDH keys, and the check would be too
expensive for that use.
Change-Id: I5759d0d101c00711bbc30f81a3759f8bff01427c
Reviewed-on: https://boringssl-review.googlesource.com/7522
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This is imported from upstream's
71bbc79b7d and test vectors taken
initially from 2d7bbd6c9f (with a handful
more added).
The tests are a little odd because OpenSSL supports this "salt length
recovery" mode and they go through that codepath for all verifications.
Change-Id: I220104fe87e2a1a1458c99656f9791d8abfbbb98
Reviewed-on: https://boringssl-review.googlesource.com/12822
Commit-Queue: David Benjamin <davidben@google.com>
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This reverts commits 36ca21415a and
7b668a873e. We believe that we need to
update ASAN to be aware of getrandom before we can use it. Otherwise it
believes that the memory with the entropy from this syscall is
uninitialised.
Change-Id: I1ea1c4d3038b3b2cd080be23d7d8b60fc0c83df2
Reviewed-on: https://boringssl-review.googlesource.com/12901
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This change includes C versions of some of the functions from the x86-64
P-256 code that are currently implemented in assembly. These functions
were part of the original submission by Intel and are covered by the ISC
license.
No semantic change; code is commented out.
Change-Id: Ifdd2fac6caeb73d375d6b125fac98f3945003b32
Reviewed-on: https://boringssl-review.googlesource.com/12861
Reviewed-by: Adam Langley <agl@google.com>
This gives a 15-16% perf boost for 1024-bit RSA keys, but 1024-bit RSA
keys are no longer important enough for this code to carry its weight.
Change-Id: Ia9f0e7fec512c28e90754ababade394c1f11984d
Reviewed-on: https://boringssl-review.googlesource.com/12841
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These are regression tests for
https://boringssl-review.googlesource.com/c/12525/ that target the
RSAZ-512 code rather than the disabled RSAZ-1024 code.
These were created by extracting p and dmp1 from
ssl/test/rsa_1024_key.pem and creating similar test vectors as with the
AVX2 test vectors. They currently fail, but pass if the RSAZ-512 code is
disabled.
Change-Id: I99dd3f385941ddbb1cc64b5351f4411081b42dd7
Reviewed-on: https://boringssl-review.googlesource.com/12840
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
Note that this adds new non-constant-time code into the RSAZ-based
code path.
Change-Id: Ibca3bc523ede131b55c70ac5066c0014df1f5a70
Reviewed-on: https://boringssl-review.googlesource.com/12525
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Commit-Queue: David Benjamin <davidben@google.com>
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David Benjamin
Adam Langley
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Adam Langley
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