90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
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void *worker_slow(void *task)
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{
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union pubonionunion pubonion;
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u8 * const pk = &pubonion.raw[PKPREFIX_SIZE];
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u8 secret[SKPREFIX_SIZE + SECRET_LEN];
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u8 * const sk = &secret[SKPREFIX_SIZE];
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u8 seed[SEED_LEN];
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u8 hashsrc[checksumstrlen + PUBLIC_LEN + 1];
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u8 wpk[PUBLIC_LEN + 1];
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char *sname;
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size_t i;
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#ifdef STATISTICS
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struct statstruct *st = (struct statstruct *)task;
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#else
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(void) task;
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#endif
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PREFILTER
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memcpy(secret,skprefix,SKPREFIX_SIZE);
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wpk[PUBLIC_LEN] = 0;
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memset(&pubonion,0,sizeof(pubonion));
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memcpy(pubonion.raw,pkprefix,PKPREFIX_SIZE);
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// write version later as it will be overwritten by hash
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memcpy(hashsrc,checksumstr,checksumstrlen);
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hashsrc[checksumstrlen + PUBLIC_LEN] = 0x03; // version
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sname = makesname();
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initseed:
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randombytes(seed,sizeof(seed));
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ed25519_seckey_expand(sk,seed);
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#ifdef STATISTICS
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++st->numrestart.v;
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#endif
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again:
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if (unlikely(endwork))
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goto end;
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ed25519_pubkey(pk,sk);
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#ifdef STATISTICS
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++st->numcalc.v;
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#endif
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DOFILTER(i,pk,{
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if (numwords > 1) {
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shiftpk(wpk,pk,filter_len(i));
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size_t j;
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for (int w = 1;;) {
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DOFILTER(j,wpk,goto secondfind);
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goto next;
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secondfind:
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if (++w >= numwords)
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break;
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shiftpk(wpk,wpk,filter_len(j));
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}
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}
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// sanity check
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if ((sk[0] & 248) != sk[0] || ((sk[31] & 63) | 64) != sk[31])
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goto initseed;
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ADDNUMSUCCESS;
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// calc checksum
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memcpy(&hashsrc[checksumstrlen],pk,PUBLIC_LEN);
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FIPS202_SHA3_256(hashsrc,sizeof(hashsrc),&pk[PUBLIC_LEN]);
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// version byte
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pk[PUBLIC_LEN + 2] = 0x03;
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// base32
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strcpy(base32_to(&sname[direndpos],pk,PUBONION_LEN),".onion");
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onionready(sname,secret,pubonion.raw);
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pk[PUBLIC_LEN] = 0; // what is this for?
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goto initseed;
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});
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next:
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addsk32(sk);
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goto again;
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end:
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free(sname);
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POSTFILTER
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sodium_memzero(secret,sizeof(secret));
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sodium_memzero(seed,sizeof(seed));
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return 0;
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}
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