The #7408 implemented mandatory digest checking in TLS.
However this broke compatibility of DSS support with GnuTLS
which supports only SHA1 with DSS.
There is no reason why SHA256 would be a mandatory digest
for DSA as other digests in SHA family can be used as well.
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/9015)
(cherry picked from commit cd4c83b524)
Since return is inconsistent, I removed unnecessary parentheses and
unified them.
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4541)
Reorder arguments to follow convention.
Also allow r/s to be NULL in DSA_SIG_get0, similarly to ECDSA_SIG_get0.
This complements GH1193 which adds non-const setters.
Reviewed-by: Rich Salz <rsalz@openssl.org>
Don't copy parameters is they're already present in the destination.
Return error if an attempt is made to copy different parameters to
destination. Update documentation.
If key type is not initialised return missing parameters
RT#4149
Reviewed-by: Richard Levitte <levitte@openssl.org>
Move the dsa_st structure out of the public header file. Add some accessor
functions to enable access to the internal fields, and update all internal
usage to use the new functions.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Stephen Henson <steve@openssl.org>
Don't have #error statements in header files, but instead wrap
the contents of that file in #ifndef OPENSSL_NO_xxx
This means it is now always safe to include the header file.
Reviewed-by: Richard Levitte <levitte@openssl.org>
This adds a new accessor function DSA_SIG_get0.
The customisation of DSA_SIG structure initialisation has been removed this
means that the 'r' and 's' components are automatically allocated when
DSA_SIG_new() is called. Update documentation.
Reviewed-by: Rich Salz <rsalz@openssl.org>
Remove old code that handled various invalid DSA formats in ancient
software.
This also fixes a double free bug when parsing malformed DSA private keys.
Thanks to Adam Langley (Google/BoringSSL) for discovering this bug using
libFuzzer.
CVE-2016-0705
Reviewed-by: Emilia Käsper <emilia@openssl.org>
Make EVP_PKEY_copy_parameters() work if the destination has no type
(e.g. if obtained from EVP_PKEY_new()) or the underlying key is NULL.
This is useful where we want to copy the parameters from an existing
key to a new key.
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
Add secure heap for storage of private keys (when possible).
Add BIO_s_secmem(), CBIGNUM, etc.
Add BIO_CTX_secure_new so all BIGNUM's in the context are secure.
Contributed by Akamai Technologies under the Corporate CLA.
Reviewed-by: Richard Levitte <levitte@openssl.org>
There are header files in crypto/ that are used by a number of crypto/
submodules. Move those to crypto/include/internal and adapt the
affected source code and Makefiles.
The header files that got moved are:
crypto/cryptolib.h
crypto/md32_common.h
Reviewed-by: Rich Salz <rsalz@openssl.org>
This gets BN_.*free:
BN_BLINDING_free BN_CTX_free BN_FLG_FREE BN_GENCB_free
BN_MONT_CTX_free BN_RECP_CTX_free BN_clear_free BN_free BUF_MEM_free
Also fix a call to DSA_SIG_free to ccgost engine and remove some #ifdef'd
dead code in engines/e_ubsec.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Do not check for NULL before calling a free routine. This addresses:
ASN1_BIT_STRING_free ASN1_GENERALIZEDTIME_free ASN1_INTEGER_free
ASN1_OBJECT_free ASN1_OCTET_STRING_free ASN1_PCTX_free ASN1_SCTX_free
ASN1_STRING_clear_free ASN1_STRING_free ASN1_TYPE_free
ASN1_UTCTIME_free M_ASN1_free_of
Reviewed-by: Richard Levitte <levitte@openssl.org>
DSA public keys could exist in two forms: a single Integer type or a
SEQUENCE containing the parameters and public key with a field called
"write_params" deciding which form to use. These forms are non standard
and were only used by functions containing "DSAPublicKey" in the name.
Simplify code to only use the parameter form and encode the public key
component directly in the DSA public key method.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Start ensuring all OpenSSL "free" routines allow NULL, and remove
any if check before calling them.
This gets DH_free, DSA_free, RSA_free
Reviewed-by: Matt Caswell <matt@openssl.org>
Move ASN.1 internals used across multiple directories into new internal
header file asn1_int.h remove crypto/Makefile hack which allowed other
directories to include "asn1_locl.h"
Reviewed-by: Matt Caswell <matt@openssl.org>
Start ensuring all OpenSSL "free" routines allow NULL, and remove
any if check before calling them.
This gets ASN1_OBJECT_free and ASN1_STRING_free.
Reviewed-by: Matt Caswell <matt@openssl.org>
The return value from ASN1_STRING_new() was not being checked which could
lead to a NULL deref in the event of a malloc failure. Also fixed a mem
leak in the error path.
Reviewed-by: Rich Salz <rsalz@openssl.org>
New function ASN1_STRING_clear_free which cleanses an ASN1_STRING
structure before freeing it.
Call ASN1_STRING_clear_free on PKCS#8 private key components.
Reviewed-by: Rich Salz <rsalz@openssl.org>
This is a more comprehensive fix. It changes all
keygen apps to use 2K keys. It also changes the
default to use SHA256 not SHA1. This is from
Kurt's upstream Debian changes.
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
For RSA and DSA keys return an appropriate RecipientInfo type. By setting
CMS_RECIPINFO_NONE for DSA keys an appropriate error is returned if
an attempt is made to use DSA with enveloped data.
now print out signatures instead of the standard hex dump.
More complex signatures (e.g. PSS) can print out more meaningful information.
Sample DSA version included that prints out the signature parameters r, s.
[Note EVP_PKEY_ASN1_METHOD is an application opaque structure so adding
new fields in the middle has no compatibility issues]
knock-on work than expected - they've been extracted into a patch
series that can be completed elsewhere, or in a different branch,
before merging back to HEAD.
