diff options
author | Mattias Andrée <maandree@kth.se> | 2024-09-15 00:47:51 +0200 |
---|---|---|
committer | Mattias Andrée <maandree@kth.se> | 2024-09-15 00:47:51 +0200 |
commit | f14ba70de62cbd47e074756b1f1aec1f3b77a02d (patch) | |
tree | 4b4c27260816f553b7a1fe54153c06b122160ffc /libkeccak_generalised_sum_fd.3 | |
parent | Split libkeccak.h and fix support for architectures that do not allow misaligned memory (diff) | |
download | libkeccak-f14ba70de62cbd47e074756b1f1aec1f3b77a02d.tar.gz libkeccak-f14ba70de62cbd47e074756b1f1aec1f3b77a02d.tar.bz2 libkeccak-f14ba70de62cbd47e074756b1f1aec1f3b77a02d.tar.xz |
Move man pages into man3/ and man7/
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'libkeccak_generalised_sum_fd.3')
-rw-r--r-- | libkeccak_generalised_sum_fd.3 | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/libkeccak_generalised_sum_fd.3 b/libkeccak_generalised_sum_fd.3 deleted file mode 100644 index 9f5341a..0000000 --- a/libkeccak_generalised_sum_fd.3 +++ /dev/null @@ -1,137 +0,0 @@ -.TH LIBKECCAK_GENERALISED_SUM_FD 3 LIBKECCAK -.SH NAME -libkeccak_generalised_sum_fd - Calculate the hash of a file -.SH SYNOPSIS -.nf -#include <libkeccak.h> - -int libkeccak_generalised_sum_fd(int \fIfd\fP, struct libkeccak_state *\fIstate\fP, const struct libkeccak_spec *\fIspec\fP, - const char *\fIsuffix\fP, void *\fIhashsum\fP); -.fi -.PP -Link with -.IR -lkeccak . -.SH DESCRIPTION -The -.BR libkeccak_generalised_sum_fd () -function calculates the hash of a file, whose file desriptor is -specified by -.I fd -(and should be at the beginning of the file.) The hash algorithm -is specified by -.I *spec -and -.IR suffix , -where -.I *spec -is the tuning of the algorithm and -.I suffix -is the bits append to the message (or -.I NULL -if none.) -.PP -The hash is stored in binary form to -.IR hashsum . -.I hashsum -should have an allocation size of at least -.RI ((( spec->output -+ 7) / 8) * sizeof(char)). -.PP -.I *state -should not be initialised unless -.I spec -is -.IR NULL . -.BR libkeccak_generalised_sum_fd () -initialises -.I *state -itself unless -.I spec -is -.IR NULL . -Therefore there would be a memory leak if -.I *state -is already initialised and -.I spec -is -.RI non- NULL . -.SH RETURN VALUES -The -.BR libkeccak_generalised_sum_fd () -function returns 0 upon successful completion. -On error, -1 is returned and -.I errno -is set to describe the error. -.SH ERRORS -The -.BR libkeccak_generalised_sum_fd () -function may fail for any reason, except those resulting -in -.I errno -being set to -.BR EINTR , -specified for the functions -.BR read (2), -.BR malloc (3), -and -.BR realloc (3). -.SH NOTES -Be aware, -.BR libkeccak_generalised_sum_fd () -hashes the file until the end has been reached. For pipes -and sockets and this means until the file has been closed. -But for character devices, this usually means never. -Attempting to hash files in /dev is therefore usually a -bad idea. -.BR libkeccak_generalised_sum_fd () -does not check for the file length or file type before -hashing as this could limit what you can do, and make -the library more complex. -.PP -.BR libkeccak_generalised_sum_fd () -does not stop if interrupted -.RB ( read (2) -returns -.BR EINTR .) -.PP -.BR libkeccak_generalised_sum_fd () -assumes all information is non-sensitive, and will -therefore not perform any secure erasure of information. -.PP -.BR libkeccak_generalised_sum_fd () -does not validate the tuning of the algorithm. -.SH EXAMPLE -This example calculates the Keccak[b = 1024, c = 576, n = 256] -hash of the input from stdin, and prints the hash, in hexadecimal -form, to stdout. -.PP -.nf -struct libkeccak_state state; -struct libkeccak_spec spec; -char binhash[256 / 8]; -char hexhash[256 / 8 * 2 + 1]; - -spec.bitrate = 1024; -spec.capacity = 576; -spec.output = 256; - -if (libkeccak_generalised_sum_fd(STDIN_FILENO, &state, &spec, NULL, binhash) < 0) - goto fail; -libkeccak_behex_lower(hexhash, binhash, sizeof(binhash)); -printf(\(dq%s\en\(dq, hexhash); -libkeccak_state_destroy(&state); -.fi -.SH SEE ALSO -.BR libkeccak_behex_lower (3), -.BR libkeccak_behex_upper (3), -.BR libkeccak_keccaksum_fd (3), -.BR libkeccak_sha3sum_fd (3), -.BR libkeccak_rawshakesum_fd (3), -.BR libkeccak_shakesum_fd (3), -.BR libkeccak_spec_cshake (3), -.BR libkeccak_spec_sha3 (3), -.BR libkeccak_spec_shake (3), -.BR libkeccak_spec_rawshake (3), -.BR libkeccak_spec_check (3), -.BR libkeccak_generalised_spec_initialise (3), -.BR libkeccak_state_initialise (3) |