=pod =head1 NAME evp - high-level cryptographic functions =head1 SYNOPSIS #include <openssl/evp.h> =head1 DESCRIPTION The EVP library provides a high-level interface to cryptographic functions. B<EVP_Seal>I<...> and B<EVP_Open>I<...> provide public key encryption and decryption to implement digital "envelopes". The B<EVP_Sign>I<...> and B<EVP_Verify>I<...> functions implement digital signatures. Symmetric encryption is available with the B<EVP_Encrypt>I<...> functions. The B<EVP_Digest>I<...> functions provide message digests. Algorithms are loaded with OpenSSL_add_all_algorithms(3). =head1 SEE ALSO L<EVP_DigestInit(3)|EVP_DigestInit(3)>, L<EVP_EncryptInit(3)|EVP_EncryptInit(3)>, L<EVP_OpenInit(3)|EVP_OpenInit(3)>, L<EVP_SealInit(3)|EVP_SealInit(3)>, L<EVP_SignInit(3)|EVP_SignInit(3)>, L<EVP_VerifyInit(3)|EVP_VerifyInit(3)>, L<OpenSSL_add_all_algorithms(3)|OpenSSL_add_all_algorithms(3)> =cut