NE_STRHASH(3) neon API reference NE_STRHASH(3)

NAME

ne_strhash, ne_vstrhash - string hash interface

SYNOPSIS

#include <ne_string.h>

char *ne_strhash(unsigned int flags, ...);

char *ne_vstrhash(unsigned int flags, va_list ap);

DESCRIPTION

The ne_strhash and ne_vstrhash functions can be used to create
hashes. The varargs argument list must be const char * strings
followed by a NULL terminator. The flags argument must select exactly
one hash algorithm from the list below, which can be optionally
bitwise-ORed with one of the formatting option. The hash is
calculated for the concatenation of the argument list, without
separators.

Hash algorithms

The following hash algorithms are available:

NE_HASH_MD5
MD5

NE_HASH_SHA256
SHA-256 (SHA-2)

NE_HASH_SHA512
SHA-512 (SHA-2)

NE_HASH_SHA256_256
SHA-512/256 (SHA-2)

Formatting options

By default, the hash is returned as a hexadecimal lower-case
character string. The following formatting options are available:

NE_HASH_COLON
colon-separated hex pairs, e.g. "aa:11:22..."

NE_HASH_SPACE
space-separated hex pairs, e.g. "aa 11 22..."

RETURN VALUE

The return value is the ASCII hexadecimal representation of the hash
as a malloc-allocated, NUL-terminated string, or NULL if the hash
cannot be created. The string length is determined by the hash
algorithm (and formatting options used). Support for hash algorithms
is specific to the SSL toolkit with which neon is compiled. Some
systems will further restrict hash availability at runtime, e.g. due
to FIPS mode.

AUTHOR

Joe Orton
Author.

COPYRIGHT

neon 0.32.5 21 January 2023 NE_STRHASH(3)