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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 <neon@lists.manyfish.co.uk>
Author.
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