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Diffstat (limited to 'doc/man3/EVP_chacha20.pod')
-rw-r--r-- | doc/man3/EVP_chacha20.pod | 57 |
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diff --git a/doc/man3/EVP_chacha20.pod b/doc/man3/EVP_chacha20.pod new file mode 100644 index 000000000000..96da825cded4 --- /dev/null +++ b/doc/man3/EVP_chacha20.pod @@ -0,0 +1,57 @@ +=pod + +=head1 NAME + +EVP_chacha20, +EVP_chacha20_poly1305 +- EVP ChaCha20 stream cipher + +=head1 SYNOPSIS + + #include <openssl/evp.h> + + const EVP_CIPHER *EVP_chacha20(void) + const EVP_CIPHER *EVP_chacha20_poly1305(void) + +=head1 DESCRIPTION + +The ChaCha20 stream cipher for EVP. + +=over 4 + +=item EVP_chacha20() + +The ChaCha20 stream cipher. The key length is 256 bits, the IV is 96 bits long. + +=item EVP_chacha20_poly1305() + +Authenticated encryption with ChaCha20-Poly1305. Like EVP_chacha20(), the key +is 256 bits and the IV is 96 bits. This supports additional authenticated data +(AAD) and produces a 128-bit authentication tag. See the +L<EVP_EncryptInit(3)/AEAD Interface> section for more information. + +=back + +=head1 RETURN VALUES + +These functions return an B<EVP_CIPHER> structure that contains the +implementation of the symmetric cipher. See L<EVP_CIPHER_meth_new(3)> for +details of the B<EVP_CIPHER> structure. + +=head1 SEE ALSO + +L<evp(7)>, +L<EVP_EncryptInit(3)>, +L<EVP_CIPHER_meth_new(3)> + +=head1 COPYRIGHT + +Copyright 2017 The OpenSSL Project Authors. All Rights Reserved. + +Licensed under the OpenSSL license (the "License"). You may not use +this file except in compliance with the License. You can obtain a copy +in the file LICENSE in the source distribution or at +L<https://www.openssl.org/source/license.html>. + +=cut + |