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71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
/*
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* UFC-crypt: ultra fast crypt(3) implementation
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*
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* Copyright (C) 1991-2020 Free Software Foundation, Inc.
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*
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* The GNU C Library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* The GNU C Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with the GNU C Library; if not, see
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* <https://www.gnu.org/licenses/>.
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*
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* @(#)crypt.h 1.5 12/20/96
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*
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*/
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#ifndef _CRYPT_H
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#define _CRYPT_H 1
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#include <features.h>
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__BEGIN_DECLS
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/* One-way hash PHRASE, returning a string suitable for storage in the
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user database. SALT selects the one-way function to use, and
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ensures that no two users' hashes are the same, even if they use
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the same passphrase. The return value points to static storage
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which will be overwritten by the next call to crypt. */
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extern char *crypt (const char *__phrase, const char *__salt)
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__THROW __nonnull ((1, 2));
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#ifdef __USE_GNU
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/* This structure provides scratch and output buffers for 'crypt_r'.
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Its contents should not be accessed directly. */
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struct crypt_data
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{
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char keysched[16 * 8];
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char sb0[32768];
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char sb1[32768];
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char sb2[32768];
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char sb3[32768];
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/* end-of-aligment-critical-data */
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char crypt_3_buf[14];
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char current_salt[2];
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long int current_saltbits;
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int direction, initialized;
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};
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/* Thread-safe version of 'crypt'.
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DATA must point to a 'struct crypt_data' allocated by the caller.
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Before the first call to 'crypt_r' with a new 'struct crypt_data',
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that object must be initialized to all zeroes. The pointer
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returned, if not NULL, will point within DATA. (It will still be
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overwritten by the next call to 'crypt_r' with the same DATA.) */
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extern char *crypt_r (const char *__phrase, const char *__salt,
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struct crypt_data * __restrict __data)
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__THROW __nonnull ((1, 2, 3));
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#endif
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__END_DECLS
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#endif /* crypt.h */
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