2011-03-30 12:46:40 +00:00
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#include <u.h>
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#include <libc.h>
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#include <authsrv.h>
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2015-08-21 00:43:31 +00:00
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#include <libsec.h>
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2011-03-30 12:46:40 +00:00
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2015-08-21 00:43:31 +00:00
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static void
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passtodeskey(char *key, char *p)
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2011-03-30 12:46:40 +00:00
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{
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uchar buf[ANAMELEN], *t;
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int i, n;
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n = strlen(p);
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if(n >= ANAMELEN)
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n = ANAMELEN-1;
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memset(buf, ' ', 8);
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t = buf;
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strncpy((char*)t, p, n);
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t[n] = 0;
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2015-08-21 00:43:31 +00:00
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memset(key, 0, DESKEYLEN);
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2011-03-30 12:46:40 +00:00
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for(;;){
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for(i = 0; i < DESKEYLEN; i++)
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2015-08-21 00:43:31 +00:00
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key[i] = (t[i] >> i) + (t[i+1] << (8 - (i+1)));
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2011-03-30 12:46:40 +00:00
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if(n <= 8)
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2015-08-21 00:43:31 +00:00
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return;
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2011-03-30 12:46:40 +00:00
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n -= 8;
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t += 8;
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if(n < 8){
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t -= 8 - n;
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n = 8;
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}
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2015-08-21 00:43:31 +00:00
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encrypt(key, t, 8);
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2011-03-30 12:46:40 +00:00
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}
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}
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2015-08-21 00:43:31 +00:00
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static void
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passtoaeskey(uchar *key, char *p)
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{
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static char salt[] = "Plan 9 key derivation";
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2015-09-02 09:28:11 +00:00
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pbkdf2_x((uchar*)p, strlen(p), (uchar*)salt, sizeof(salt)-1, 9001, key, AESKEYLEN, hmac_sha1, SHA1dlen);
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2015-08-21 00:43:31 +00:00
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}
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void
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passtokey(Authkey *key, char *p)
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{
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memset(key, 0, sizeof(Authkey));
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passtodeskey(key->des, p);
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passtoaeskey(key->aes, p);
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}
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