If CSR verify fails in ca utility print out error messages.
Otherwise some errors give misleading output: for example
if the key size exceeds the library limit.

PR#2875
(cherry picked from commit a30bdb55)

(cherry picked from commit 7ae6a4b6)

PR#3107
(cherry picked from commit 7c206db9)

Some state strings were erronously not compiled when no-ssl2
was set.

PR#3295
(cherry picked from commit 0518a3e1)

(cherry picked from commit d1d4382d)

PR#3174
(cherry picked from commit fd331c0bb9b557903dd2ce88398570a3327b5ef0)

In EVP_PBE_alg_add don't use the underlying NID for the cipher
as it may have a non-standard key size.

PR#3206
(cherry picked from commit efb7caef637a1de8468ca109efd355a9d0e73a45)

PR#3014
(cherry picked from commit 11da66f8)

PR#2783
(cherry picked from commit b36f35cd)

PR#3374
(cherry picked from commit 0436369f)

Document that the certificate passed to SSL_CTX_add_extra_chain_cert()
should not be freed by the application.

PR#3409
(cherry picked from commit 0535c2d6)

Add restrictions section present in other branches.

Conflicts:

	doc/ssl/SSL_CTX_add_extra_chain_cert.pod
(cherry picked from commit 86cac6d3)

PR#3403
(cherry picked from commit d2aea038)

(cherry picked from commit 7be6b27a)

PR#3410
(cherry picked from commit e14e764c0d5d469da63d0819c6ffc0e1e9e7f0bb)

PR#3399.
(cherry picked from commit da0d5e78)

In the ssl_cipher_get_evp() function, fix off-by-one errors in index validation before accessing arrays.

Bug discovered and fixed by Miod Vallat from the OpenBSD team.

PR#3375

This reverts commit 7e98378d.

Incorrect attribution.

Allow CCS after finished has been sent by client: at this point
keys have been correctly set up so it is OK to accept CCS from
server. Without this renegotiation can sometimes fail.

PR#3400
(cherry picked from commit 99cd6a91fcb0931feaebbb4832681d40a66fad41)

Based on an original patch by Joel Sing (OpenBSD) who also originally identified the issue.

This reverts commit e05282f8.

Missing attribution.

In the ssl_cipher_get_evp() function, fix off-by-one errors in index validation before accessing arrays.

PR#3375

(Backported as a result of PR#3377 reported by Rainer Jung <rainer.jung@kippdata.de>)

(cherry picked from commit 7239a09c7b5757ed8d0e9869f3e9b03c0e11f4d1)

PR#3394
(cherry picked from commit 7a9d59c1)

Fix strength_bits to 112 for 3DES.

Because of a missing include <fcntl.h> we don't have O_CREATE and don't create
the file with open() using mode 0600 but fall back to using fopen() with the
default umask followed by a chmod().

Problem found by Jakub Wilk <jwilk@debian.org>.

If application uses tls_session_secret_cb for session resumption
set the CCS_OK flag.
(cherry picked from commit 953c592572e8811b7956cc09fbd8e98037068b58)

Check session_cert is not NULL before dereferencing it.

Unnecessary recursion when receiving a DTLS hello request can be used to
crash a DTLS client. Fixed by handling DTLS hello request without recursion.

Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.

Return a fatal error if an attempt is made to use a zero length
master secret.