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-=head1 NAME
-OpenSSL_add_all_algorithms, OpenSSL_add_all_ciphers, OpenSSL_add_all_digests, EVP_cleanup -
-add algorithms to internal table
-=head1 SYNOPSIS
- #include <openssl/evp.h>
- void OpenSSL_add_all_algorithms(void);
- void OpenSSL_add_all_ciphers(void);
- void OpenSSL_add_all_digests(void);
- void EVP_cleanup(void);
-OpenSSL keeps an internal table of digest algorithms and ciphers. It uses
-this table to lookup ciphers via functions such as EVP_get_cipher_byname().
-OpenSSL_add_all_digests() adds all digest algorithms to the table.
-OpenSSL_add_all_algorithms() adds all algorithms to the table (digests and
-OpenSSL_add_all_ciphers() adds all encryption algorithms to the table including
-password based encryption algorithms.
-EVP_cleanup() removes all ciphers and digests from the table.
-None of the functions return a value.
-=head1 NOTES
-A typical application will call OpenSSL_add_all_algorithms() initially and
-EVP_cleanup() before exiting.
-An application does not need to add algorithms to use them explicitly, for example
-by EVP_sha1(). It just needs to add them if it (or any of the functions it calls)
-needs to lookup algorithms.
-The cipher and digest lookup functions are used in many parts of the library. If
-the table is not initialized several functions will misbehave and complain they
-cannot find algorithms. This includes the PEM, PKCS#12, SSL and S/MIME libraries.
-This is a common query in the OpenSSL mailing lists.
-Calling OpenSSL_add_all_algorithms() links in all algorithms: as a result a
-statically linked executable can be quite large. If this is important it is possible
-to just add the required ciphers and digests.
-=head1 BUGS
-Although the functions do not return error codes it is possible for them to fail.
-This will only happen as a result of a memory allocation failure so this is not
-too much of a problem in practice.
-=head1 SEE ALSO
-L<evp(3)|evp(3)>, L<EVP_DigestInit(3)|EVP_DigestInit(3)>,