1crypt_gensalt_impl(3C) Standard C Library Functions crypt_gensalt_impl(3C)
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6 crypt_gensalt_impl - generate salt for password encryption
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9 #include <crypt.h>
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11 char *crypt_gensalt_impl(char *gsbuffer, size_t gsbufflen,
12 const char *oldsalt, const struct passwd *userinfo,
13 const char **params);
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17 The crypt_gensalt_impl() function is called by crypt_gensalt(3C) to
18 generate the salt for password encryption.
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21 The gsbuffer argument is a pointer to an MT-safe buffer of size gsbuf‐
22 flen.
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25 The oldsalt and userinfo arguments are passed unchanged from crypt_gen‐
26 salt(3C).
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29 The params argument is an argv-like null terminated vector of type char
30 *. The first element of params represents the mechanism token name from
31 crypt.conf(4). The remaining elements of params represent strings of
32 the form <parameter>[=<value>] to allow passing in additional informa‐
33 tion from the crypt.conf entry, such as specifying rounds information
34 "rounds=4096".
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37 The value returned by crypt_gensalt_impl() points to a thread-specific
38 buffer to be freed by the caller of crypt_gensalt(3C) after calling
39 crypt(3C).
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42 Upon successful completion, crypt_gensalt_impl() returns a pointer to
43 the new salt. Otherwise a null pointer is returned and errno is set to
44 indicate the error.
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47 The crypt_gensalt_impl() function will fail if:
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49 EINVAL The configuration file crypt.conf contains an invalid entry.
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52 ELIBACC The required crypt shared library was not found.
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55 ENOMEM There is insufficient memory to perform hashing.
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59 See attributes(5) for descriptions of the following attributes:
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64 ┌─────────────────────────────┬─────────────────────────────┐
65 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
66 ├─────────────────────────────┼─────────────────────────────┤
67 │Interface Stability │Evolving │
68 ├─────────────────────────────┼─────────────────────────────┤
69 │MT-Level │MT-Safe │
70 └─────────────────────────────┴─────────────────────────────┘
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73 passwd(1), crypt(3C), crypt_genhash_impl(3C), crypt_gensalt(3C), get‐
74 passphrase(3C), crypt.conf(4), passwd(4), attributes(5)
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78SunOS 5.11 10 Jun 2002 crypt_gensalt_impl(3C)