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These 'builder' functions, usually used together, can result in corrupt
ASIdentifiers on failure. In general, no caller should ever try to recover
from OpenSSL API failure. There are simply too many traps. We can still
make an effort to leave the objects in unmodified state on failure. This
is tricky because ownership transfer happens. Unfortunately a really
clean version of this seems impossible, maybe a future iteration will
bring improvements...
The nasty bit here is that the caller of X509v3_asid_add_id_or_range()
can't know from the return value whether ownership of min and max was
transferred or not. An inspection of (*choice)->u.range is required.
If a caller frees min and max after sk_ASIdOrRange_push() failed, there
is a double free.
All these complications could have been avoided if the API interface
had simply used uint32_t instead of ASN1_INTEGERs. The entire RFC 3779
API was clearly written without proper review. I don't know if there
ever was an actual consumer before rpki-client. If it existed, nobody
with the requisite skill set looked at it in depth.
ok beck for the general direction
with a lot of input and ok jsing
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Wo don't have them anywhere else, so we don't need them here.
No text change.
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OK millert@ jmc@
triggered by a question from cheloha@
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ober_scanf_elements(). This allows us to move down and back up multiple
levels in with nested sequences and sets.
While here, on failure, make sure we free (and unlink if needed) all
elements we created.
OK claudio@, tb@
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OK kn@ jmc@
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This is a straightforward conversion because I'm not going to start a
cleanup here. Explain why this is not using X509_ALGOR_set_md(). See
below.
ok jca
Let me include a beautiful note from RFC 5754 in its entirety:
NOTE: There are two possible encodings for the AlgorithmIdentifier
parameters field associated with these object identifiers. The two
alternatives arise from the loss of the OPTIONAL associated with the
algorithm identifier parameters when the 1988 syntax for
AlgorithmIdentifier was translated into the 1997 syntax. Later, the
OPTIONAL was recovered via a defect report, but by then many people
thought that algorithm parameters were mandatory. Because of this
history, some implementations encode parameters as a NULL element
while others omit them entirely. The correct encoding is to omit the
parameters field; however, when some uses of these algorithms were
defined, it was done using the NULL parameters rather than absent
parameters. For example, PKCS#1 [RFC3447] requires that the padding
used for RSA signatures (EMSA-PKCS1-v1_5) MUST use SHA2
AlgorithmIdentifiers with NULL parameters (to clarify, the
requirement "MUST generate SHA2 AlgorithmIdentifiers with absent
parameters" in the previous paragraph does not apply to this
padding).
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ok jca
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ok jca
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Replace X509_ALGOR_set0() with X509_ALGOR_set0_by_nid(). This way there
is no missing error checking for OBJ_nid2obj() and no nested functions.
Slightly more importantly, this plugs two long standing potential leaks
in this function (or previously rsa_cms_encrypt()) due to missing error
checking: in the unlikely event that X509_ALGOR_set0() failed, astr/ostr
would leak.
ok jsing
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ok jsing
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Test and assign one more instance replace a useless comment by an empty
line.
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In rsa_alg_set_oaep_padding() rename los to ostr for consistency with
astr, make it have function scope, free ostr in the error path and assume
X509_ALGOR_set0() success.
ok jca
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Rename rv into ret and split it on its own line, move labellen a bit down
add some empty lines. To match style elsewhere.
Most of this was requested by jsing
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This matches what is done for PKCS#1 1.5 and PSS. This function needs a
lot of work still, but it's easier to do that without having to tiptoe
around a lot of other garbage.
ok jsing
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Use timespecisvalid(3) to check both bounds for tv_nsec.
Link: https://marc.info/?l=openbsd-tech&m=169913314230496&w=2
ok miod@
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error check
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After previous refactoring, rsa_all_set_pss_padding() is the last remaining
caller of the weirdly named and ugly rsa_all_set_pss_padding(). This can be
handled in a few simple lines now that this mess has slightly cleaner code.
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Check and assign the EVP_PKEY_CTX and move the extraction of the algorithm
identifier from the signer info a few lines down.
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The current convoluted mess can be handled with two calls to the new
rsa_alg_set_pss_padding() helper. Not that this would be obvious at
all.
This fixes two more leaks in case of X509_ALGOR_set0() failure.
ok jsing
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This sets the AlgorithmIdentifier's algorithm to id-RSASSA-PSS with
appropriate RSASSA-PSS parameters. This pulls a chunk of code out of
rsa_cms_sign() and rewrites it with proper error checking, thereby
fixing a long-standing leak.
This helper can also be used in rsa_item_sign(), but that part is a
bit special, and will therefore be commmitted separately.
ok jsing
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This removes a few duplicated and unchecked X509_ALGOR_set0() calls and
factors them into a helper function that sets the AlgorithmIdentifier on
the recipient info or signer info to rsaEncryption with null parameters.
ok jsing
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not real problems)
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ok jsing
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X509_ALGOR_set0() is annoyingly unergonomic since it takes an ASN1_OBJECT
rather than a nid. This means that almost all callers call OBJ_obj2nid()
and they often do this inline without error checking so that the resulting
X509_ALGOR object is corrupted and may lead to incorrect encodings.
Provide an internal alternative X509_ALGOR_set0_by_nid() that takes a nid
instead of an ASN1_OBJECT and performs proper error checking. This will be
used to convert callers of X509_ALGOR_set0() in the library.
ok jsing
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ok jsing
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ok jsing
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ok jsing
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ok jsing
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from regular network. All the crummy pledge clones don't do that.
ok millert
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Otherwise, the prototypes for timespec_get() and aligned_alloc()
are not visible. OK guenther@
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If the topmost cert is invalid, this should result in a validation failure.
Do the same dance as elsewhere permitting the verify callback to intercept
the error but ensuring that we throw an error.
ok jsing
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full OID, that checks if we're >= searchrange.end. If so, just make it
an endOfMIBView.
OK tb@
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This streamlines the code to use safer idioms, do proper error checking
and be slightly less convoluted. Sprinkle a few references to RFC 8017
and explain better what we are doing and why. Clarify ownership and use
more consistent style.
This removes the last internal use of X509_ALGOR_set_md().
ok jsing
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In imsg_free() close any fd that was not claimed automatically to prevent
filedescriptor leaks. In ibuf_dequeue() remvoe code which is now part of
imsg_free().
OK tb@
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OpenSSL has the 20 in the long and short names, so add aliases to the
existing names to make things work. In particular, EVP_get_cipherbyname()
will now return EVP_chacha20() for both 'ChaCha20' and 'chacha20'.
Found by Facundo Tuesca when trying to add LibreSSL support for ChaCha20 in
https://github.com/pyca/cryptography/pull/9209
ok jsing
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the NON_DEFAULT_CONTEXT set. Remove the argument from ax_response().
OK tb@
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