diff options
Diffstat (limited to 'doc/gcrypt.texi')
| -rw-r--r-- | doc/gcrypt.texi | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/doc/gcrypt.texi b/doc/gcrypt.texi index 3265a706..84516279 100644 --- a/doc/gcrypt.texi +++ b/doc/gcrypt.texi @@ -1900,12 +1900,24 @@ handle @var{h}. Please see the comments in the source code (@code{src/global.c}) for details. @end deftypefun -@deftypefun gcry_error_t gcry_cipher_info (gcry_cipher_hd_t @var{h}, int @var{what}, void *@var{buffer}, size_t *@var{nbytes}) +@deftypefun gcry_error_t gcry_cipher_info (gcry_cipher_hd_t @var{h}, @ + int @var{what}, void *@var{buffer}, size_t *@var{nbytes}) @code{gcry_cipher_info} is used to retrieve various information about a cipher context or the cipher module in general. -Currently no information is available. +@c begin constants for gcry_cipher_info +@table @code + +@item GCRYCTL_GET_TAGLEN: +Return the length of the tag for an AE algorithm mode. An error is +returned for modes which do not support a tag. @var{buffer} must be +given as NULL. On success the result is stored @var{nbytes}. The +taglen is returned in bytes. + +@end table +@c end constants for gcry_cipher_info + @end deftypefun @node General cipher functions |