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NE_STRHASH
Section: neon API reference (3) Updated: 23 November 2024 Index
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NAME
ne_strhash, ne_vstrhash - string hash interface
SYNOPSIS
#include <ne_string.h>
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char *ne_strhash(unsigned int flags, ...);
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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.
HISTORY
ne_strhash
and
ne_vstrhash
is available in neon 0.32.0 and later.
COPYRIGHT
Copyright © 200-2024 Joe Orton
Index
- NAME
-
- SYNOPSIS
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- DESCRIPTION
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- Hash algorithms
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- Formatting options
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- RETURN VALUE
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- HISTORY
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- COPYRIGHT
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