diff options
Diffstat (limited to 'doc/gcrypt.texi')
| -rw-r--r-- | doc/gcrypt.texi | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/gcrypt.texi b/doc/gcrypt.texi index 3265a706..9481be9e 100644 --- a/doc/gcrypt.texi +++ b/doc/gcrypt.texi @@ -3378,6 +3378,7 @@ described by @var{iov} and @var{iovcnt}. @var{digest} must be allocated by the caller, large enough to hold the message digest yielded by the the specified algorithm @var{algo}. This required size may be obtained by using the function @code{gcry_md_get_algo_dlen}. +This function cannot be used for extendable-output functions. @var{iov} is an array of buffer descriptions with @var{iovcnt} items. The caller should zero out the structures in this array and for each @@ -3402,7 +3403,8 @@ immediately returns the message digest of the @var{length} bytes at @var{buffer}. @var{digest} must be allocated by the caller, large enough to hold the message digest yielded by the the specified algorithm @var{algo}. This required size may be obtained by using the function -@code{gcry_md_get_algo_dlen}. +@code{gcry_md_get_algo_dlen}. This function has no effect for +extendable-output functions. Note that in contrast to @code{gcry_md_hash_buffers} this function will abort the process if an unavailable algorithm is used. |