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author | Mattias Andrée <maandree@kth.se> | 2019-02-11 16:22:00 +0100 |
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committer | Mattias Andrée <maandree@kth.se> | 2019-02-11 16:22:00 +0100 |
commit | 5ff4c5af715d098852d124de116d354ee10f4ea4 (patch) | |
tree | 5789ad5798f2dbf21d9406a2942e48b222f773ae /man3/libkeccak_sha3sum_fd.3 | |
parent | Remove old file (diff) | |
download | libkeccak-5ff4c5af715d098852d124de116d354ee10f4ea4.tar.gz libkeccak-5ff4c5af715d098852d124de116d354ee10f4ea4.tar.bz2 libkeccak-5ff4c5af715d098852d124de116d354ee10f4ea4.tar.xz |
Split most .c files into one per function and flatten file hierarchy
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'man3/libkeccak_sha3sum_fd.3')
-rw-r--r-- | man3/libkeccak_sha3sum_fd.3 | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/man3/libkeccak_sha3sum_fd.3 b/man3/libkeccak_sha3sum_fd.3 deleted file mode 100644 index 0d697e6..0000000 --- a/man3/libkeccak_sha3sum_fd.3 +++ /dev/null @@ -1,105 +0,0 @@ -.TH LIBKECCAK_SHA3SUM_FD 3 LIBKECCAK -.SH NAME -libkeccak_sha3sum_fd - Calculate a SHA-3 hashsum of a file -.SH SYNOPSIS -.nf -#include <libkeccak.h> - -int libkeccak_sha3sum_fd(int \fIfd\fP, libkeccak_state_t *\fIstate\fP, long int \fIoutput\fP, void *\fIhashsum\fP); -.fi -.PP -Link with -.IR -lkeccak . -.SH DESCRIPTION -The -.BR libkeccak_sha3sum_fd () -function calculates a SHA-3 hashsum of a file, whose file -desriptor is specified by -.I fd -(and should be at the beginning of the file.) The hash -algorithm is tuned by the -.I output -parameter; it specifies the output size, in bits. -.PP -The hash is stored in binary form to -.IR hashsum . -.I hashsum -should have an allocation size of at least -.RI ((( output -+ 7) / 8) * sizeof(char)). -.PP -.I *state -should not be initialised. -.BR libkeccak_sha3sum_fd () -initialises -.I *state -itself. Therefore there would be a memory leak if -.I *state -is already initialised. -.SH RETURN VALUES -The -.BR libkeccak_sha3sum_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_sha3sum_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_sha3sum_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_sha3sum_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_sha3sum_fd () -does not stop if interrupted -.RB ( read (2) -returns -.BR EINTR .) -.PP -.BR libkeccak_sha3sum_fd () -assumes all information is non-sensitive, and will -therefore not perform any secure erasure of information. -.PP -.BR libkeccak_sha3sum_fd () -does not validate the tuning of the algorithm. -.SH EXAMPLE -This example calculates the SHA3-256 hash of the input -from stdin, and prints the hash, in hexadecimal form, to stdout. -.LP -.nf -libkeccak_state_t state; -if (libkeccak_sha3sum_fd(STDIN_FILENO, &state, 256, 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_generalised_sum_fd (3), -.BR libkeccak_keccaksum_fd (3), -.BR libkeccak_rawshakesum_fd (3), -.BR libkeccak_shakesum_fd (3), -.BR libkeccak_spec_sha3 (3), -.BR libkeccak_spec_check (3), -.BR libkeccak_generalised_spec_initialise (3), -.BR libkeccak_state_initialise (3) |