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gnutls_cipher_encrypt3(3) — Linux manual page

gnutls_cipher_encrypt3(3)         gnutlsgnutls_cipher_encrypt3(3)

NAME        top

       gnutls_cipher_encrypt3 - API function

SYNOPSIS        top

#include <gnutls/crypto.h>int gnutls_cipher_encrypt3(gnutls_cipher_hd_thandle, const void *ptext, size_tptext_len, void *ctext, size_t *ctext_len,unsignedflags);

ARGUMENTS        top

       gnutls_cipher_hd_t handle                   is agnutls_cipher_hd_ttype       const void * ptext                   the data to encrypt       size_t ptext_len                   the length of data to encrypt       void * ctext                   the encrypted data       size_t * ctext_len                   the length of encrypted data (initially must hold the                   maximum available size)       unsigned flags                   flags for padding

DESCRIPTION        top

       This function will encrypt the given data using the algorithm       specified by the context. For block ciphers,ptext_len is       typically a multiple of the block size. If not, the caller can       instruct the function to pad the last block according toflags .       Currently, the only available padding scheme isGNUTLS_CIPHER_PADDING_PKCS7.       Ifctext is notNULL, it must hold enough space to store       resulting cipher text. To check the required size, this function       can be called withctext set toNULL. Thenctext_len will be       updated without performing actual encryption.

RETURNS        top

       Zero or a negative error code on error.

SINCE        top

       3.7.7

REPORTING BUGS        top

       Report bugs to <bugs@gnutls.org>.       Home page:https://www.gnutls.org

COPYRIGHT        top

       Copyright © 2001-2023 Free Software Foundation, Inc., and others.       Copying and distribution of this file, with or without       modification, are permitted in any medium without royalty provided       the copyright notice and this notice are preserved.

SEE ALSO        top

       The full documentation forgnutlsis maintained as a Texinfo       manual.  If the /usr/share/doc/gnutls/ directory does not contain       the HTML form visithttps://www.gnutls.org/manual/

COLOPHON        top

       This page is part of theGnuTLS (GnuTLS Transport Layer Security       Library) project.  Information about the project can be found at       ⟨http://www.gnutls.org/⟩.  If you have a bug report for this       manual page, send it to bugs@gnutls.org.  This page was obtained       from the tarball fetched from       ⟨https://www.gnupg.org/ftp/gcrypt/gnutls/⟩ on 2025-08-11.  If you       discover any rendering problems in this HTML version of the page,       or you believe there is a better or more up-to-date source for the       page, or you have corrections or improvements to the information       in this COLOPHON (which isnot part of the original manual page),       send a mail to man-pages@man7.orggnutls                            3.8.10gnutls_cipher_encrypt3(3)

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