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4c3f748)
Fixes #10455
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10550)
EVP_CipherInit_ex() and EVP_CipherFinal_ex() because they can reuse an
existing context without allocating and freeing it up on each call.
EVP_CipherInit_ex() and EVP_CipherFinal_ex() because they can reuse an
existing context without allocating and freeing it up on each call.
+There are some differences between functions EVP_CipherInit() and
+EVP_CipherInit_ex(), significant in some circumstances. EVP_CipherInit() fills
+the passed context object with zeros. As a consequence, EVP_CipherInit() does
+not allow step-by-step initialization of the ctx when the I<key> and I<iv> are
+passed in separate calls. It also means that the flags set for the CTX are
+removed, and it is especially important for the
+B<EVP_CIPHER_CTX_FLAG_WRAP_ALLOW> flag treated specially in
+EVP_CipherInit_ex().
+
EVP_get_cipherbynid(), and EVP_get_cipherbyobj() are implemented as macros.
=head1 BUGS
EVP_get_cipherbynid(), and EVP_get_cipherbyobj() are implemented as macros.
=head1 BUGS