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Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2065)
(cherry picked from commit 71bbc79b7d3b1195a7a7dd5f547d52ddce32d6f0)
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RFC 3447, section 8.2.2, steps 3 and 4 states that verifiers must encode
the DigestInfo struct and then compare the result against the public key
operation result. This implies that one and only one encoding is legal.
OpenSSL instead parses with crypto/asn1, then checks that the encoding
round-trips, and allows some variations for the parameter. Sufficient
laxness in this area can allow signature forgeries, as described in
https://www.imperialviolet.org/2014/09/26/pkcs1.html
Although there aren't known attacks against OpenSSL's current scheme,
this change makes OpenSSL implement the algorithm as specified. This
avoids the uncertainty and, more importantly, helps grow a healthy
ecosystem. Laxness beyond the spec, particularly in implementations
which enjoy wide use, risks harm to the ecosystem for all. A signature
producer which only tests against OpenSSL may not notice bugs and
accidentally become widely deployed. Thus implementations have a
responsibility to honor the specification as tightly as is practical.
In some cases, the damage is permanent and the spec deviation and
security risk becomes a tax all implementors must forever pay, but not
here. Both BoringSSL and Go successfully implemented and deployed
RSASSA-PKCS1-v1_5 as specified since their respective beginnings, so
this change should be compatible enough to pin down in future OpenSSL
releases.
See also https://tools.ietf.org/html/draft-thomson-postel-was-wrong-00
As a bonus, by not having to deal with sign/verify differences, this
version is also somewhat clearer. It also more consistently enforces
digest lengths in the verify_recover codepath. The NID_md5_sha1 codepath
wasn't quite doing this right.
Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Rich Salz <rsalz@openssl.org>
GH: #1474
(cherry picked from commit 608a026494c1e7a14f6d6cfcc5e4994fe2728836)
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Reviewed-by: Richard Levitte <levitte@openssl.org>
GH: #1330
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Reviewed-by: Ben Laurie <ben@openssl.org>
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Add script to find unused err/reason codes
Remove unused reason codes.
Remove entries for unused functions
Reviewed-by: Matt Caswell <matt@openssl.org>
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Reviewed-by: Richard Levitte <levitte@openssl.org>
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Reviewed-by: Richard Levitte <levitte@openssl.org>
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This was done by the following
find . -name '*.[ch]' | /tmp/pl
where /tmp/pl is the following three-line script:
print unless $. == 1 && m@/\* .*\.[ch] \*/@;
close ARGV if eof; # Close file to reset $.
And then some hand-editing of other files.
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
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Final part of flushing out SSLEay API's.
Reviewed-by: Tim Hudson <tjh@openssl.org>
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Rebuild error source files: the new mkerr.pl functionality will now
pick up and translate static function names properly.
Reviewed-by: Richard Levitte <levitte@openssl.org>
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Reviewed-by: Tim Hudson <tjh@openssl.org>
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Also tweak s3_cbc.c to use new constant-time methods.
Also fix memory leaks from internal errors in RSA_padding_check_PKCS1_OAEP_mgf1
This patch is based on the original RT submission by Adam Langley <agl@chromium.org>,
as well as code from BoringSSL and OpenSSL.
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
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Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
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Extend RSA ASN1 method to support CMS PSS signatures for both sign
and verify.
For signing the EVP_PKEY_CTX parameters are read and the appropriate
CMS structures set up.
For verification the CMS structures are analysed and the corresponding
parameters in the EVP_PKEY_CTX set.
Also add RSA-OAEP support.
For encrypt the EVP_PKEY_CTX parameters are used.
For decrypt the CMS structure is uses to set the appropriate EVP_PKEY_CTX
parameters.
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Extend OAEP support. Generalise the OAEP padding functions to support
arbitrary digests. Extend EVP_PKEY RSA method to handle the new OAEP
padding functions and add ctrls to set the additional parameters.
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Check for selftest failures.
Pairwise consistency test for RSA key generation.
Use some EVP macros instead of EVP functions.
Use minimal FIPS EVP where needed.
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requests. Add new ASN1 signature initialisation function to handle this
case.
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test for them!
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(Coverity ID 135).
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examples. All RFC4134 examples can not be processed.
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cause a denial of service. (CVE-2006-2940)
[Steve Henson, Bodo Moeller]
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Colin Percival (this would have caused more problems than solved,
and isn't really necessary anyway)
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(CVE-2006-4339)
Submitted by: Ben Laurie, Google Security Team
Reviewed by: bmoeller, mjc, shenson
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More error checking for RSA pmeth.
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Add digest size sanity checks.
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key ASN1 handling through a single EVP_PKEY_ASN1_METHOD structure and move
the spaghetti algorithm specific code to a single ASN1 module for each
algorithm.
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(Also improve util/ck_errf.pl script, and occasionally
fix source code formatting.)
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- possibility of re-creation of the blinding parameters after a
fixed number of uses (suggested by Bodo)
- calculatition of the rsa::e in case it's absent and p and q
are present (see bug report #785)
- improve the performance when if one rsa structure is shared by
more than a thread (see bug report #555)
- fix the problem described in bug report #827
- hide the definition ot the BN_BLINDING structure in bn_blind.c
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sure they are available in opensslconf.h, by giving them names starting
with "OPENSSL_" to avoid conflicts with other packages and by making
sure e_os2.h will cover all platform-specific cases together with
opensslconf.h.
I've checked fairly well that nothing breaks with this (apart from
external software that will adapt if they have used something like
NO_KRB5), but I can't guarantee it completely, so a review of this
change would be a good thing.
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and verify rather than direct encrypt/decrypt.
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insert spaces in products that occur in error codes
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openssl rsa -check
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script, translates function codes better and doesn't need the K&R function
prototypes to work (NB. the K&R prototypes can't be wiped just yet: they are
still needed by the DEF generator...). I also ran the script with the -rewrite
option to update all the header and source files.
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Submitted by:
Reviewed by:
PR:
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Submitted by: Ulf Moeller <ulf@fitug.de>
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