Performance improvement and Windows-specific bugfix (PR#3139).

(cherry picked from commit fa104be3)

Submitted by: Yuriy Kaminskiy
(cherry picked from commit 524b00c0)

PR: 3130
(cherry picked from commit 6b2cae0c)

Submitted by: Yuriy Kaminskiy
(cherry picked from commit 524b00c0)

PR: 3130
(cherry picked from commit 6b2cae0c)

Add tests for AEAD functions: AES-128-GCM, AES-256-GCM and
ChaCha20+Poly1305.

Add support for Chacha20 + Poly1305.

Switches AES-GCM ciphersuites to use AEAD interfaces.

This change allows AEADs to be used in ssl/ to implement SSL/TLS
ciphersuites.

This change adds an AEAD interface to EVP and an AES-GCM implementation
suitable for use in TLS.

The previous version of the function made adding AEAD changes very
difficult. This change should be a semantic no-op - it should be purely
a cleanup.

(cherry picked from commit dfcb42c6)

(cherry picked from commit d5605699)

(cherry picked from commit b85f8afe)

(cherry picked from commit bbc098ff)

Add some ECDH CMS tests.
(cherry picked from commit 5cdc25a7)

(cherry picked from commit 75787fd8)

Add a script to generate keys and certificates for the S/MIME and CMS
tests.

Update certificates and add EC examples.
(cherry picked from commit a0957d55)

(cherry picked from commit 5711885a)

(cherry picked from commit a3a2e3a4)

(cherry picked from commit a0aaa566)

(cherry picked from commit bd59f2b9)

Conflicts:

	crypto/dh/dh.h
	crypto/dh/dh_err.c

Sync error codes with 1.0.1.

Don't need to use temporary buffer if remaining length equals digest length.
(cherry picked from commit 3f6b6f0b)

Add X9.42 DH KDF. Move sharedinfo generation code to CMS library as the
same structure is used by DH and ECDH.

Move ASN1_OBJECT typedef to ossl_typ.h so it can be picked up by dh headers
without the need to use ASN1.
(cherry picked from commit dc1ce3bc)

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.
(cherry picked from commit 41b920ef)

Check and set AlgorithmIdenfier parameters for key wrap algorithms.
Currently these just set parameters to NULL.
(cherry picked from commit e61f5d55)

Add support for ECDH in enveloped data. The CMS ctrls for the EC ASN1
method decode/encode the appropriate parameters from the CMS ASN1 data
and send appropriate data to the EC public key method.
(cherry picked from commit 88e20b85)

Add X9.62 KDF to EC EVP_PKEY_METHOD.
(cherry picked from commit 25af7a5d)

Add hooks to support key agreement recipient info type (KARI) using
algorithm specific code in the relevant public key ASN1 method.
(cherry picked from commit 17c2764d)

Add new tests to cms-test.pl covering PSS and OAEP.
(cherry picked from commit 32b18e03)

Add support for custom public key parameters in the cms utility using
the -keyopt switch. Works for -sign and also -encrypt if -recip is used.
(cherry picked from commit 02498cc8)

Document use of -keyopt to use RSA-PSS and RSA-OAEP modes.
(cherry picked from commit 4bf4a650)