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98 lines
2.9 KiB
98 lines
2.9 KiB
/* libanode: the Anode C reference implementation |
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* Copyright (C) 2009-2010 Adam Ierymenko <adam.ierymenko@gmail.com> |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program 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 |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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#include "impl/aes.h" |
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#include "impl/ec.h" |
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#include "impl/misc.h" |
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#include "impl/types.h" |
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#include "anode.h" |
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int AnodeAddress_calc_short_id( |
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const AnodeAddress *address, |
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AnodeAddressId *short_address_id) |
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{ |
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unsigned char digest[16]; |
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switch(AnodeAddress_get_type(address)) { |
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case ANODE_ADDRESS_ANODE_256_40: |
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Anode_aes_digest(address->bits,ANODE_ADDRESS_LENGTH_ANODE_256_40,digest); |
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break; |
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default: |
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return ANODE_ERR_ADDRESS_INVALID; |
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} |
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*((uint64_t *)short_address_id->bits) = ((uint64_t *)digest)[0] ^ ((uint64_t *)digest)[1]; |
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return 0; |
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} |
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int AnodeAddress_get_zone(const AnodeAddress *address,AnodeZone *zone) |
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{ |
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switch(AnodeAddress_get_type(address)) { |
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case ANODE_ADDRESS_ANODE_256_40: |
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*((uint32_t *)&(zone->bits[0])) = *((uint32_t *)&(address->bits[1])); |
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return 0; |
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} |
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return ANODE_ERR_ADDRESS_INVALID; |
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} |
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int AnodeAddress_to_string(const AnodeAddress *address,char *buf,int len) |
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{ |
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const unsigned char *inptr; |
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char *outptr; |
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unsigned int i; |
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switch(AnodeAddress_get_type(address)) { |
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case ANODE_ADDRESS_ANODE_256_40: |
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if (len < (((ANODE_ADDRESS_LENGTH_ANODE_256_40 / 5) * 8) + 1)) |
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return ANODE_ERR_BUFFER_TOO_SMALL; |
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inptr = (const unsigned char *)address->bits; |
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outptr = buf; |
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for(i=0;i<(ANODE_ADDRESS_LENGTH_ANODE_256_40 / 5);++i) { |
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Anode_base32_5_to_8(inptr,outptr); |
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inptr += 5; |
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outptr += 8; |
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} |
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*outptr = (char)0; |
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return ((ANODE_ADDRESS_LENGTH_ANODE_256_40 / 5) * 8); |
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} |
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return ANODE_ERR_ADDRESS_INVALID; |
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} |
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int AnodeAddress_from_string(const char *str,AnodeAddress *address) |
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{ |
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const char *blk_start = str; |
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const char *ptr = str; |
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unsigned int address_len = 0; |
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while (*ptr) { |
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if ((unsigned long)(ptr - blk_start) == 8) { |
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if ((address_len + 5) > sizeof(address->bits)) |
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return ANODE_ERR_ADDRESS_INVALID; |
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Anode_base32_8_to_5(blk_start,(unsigned char *)&(address->bits[address_len])); |
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address_len += 5; |
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blk_start = ptr; |
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} |
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++ptr; |
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} |
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if (ptr != blk_start) |
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return ANODE_ERR_ADDRESS_INVALID; |
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if (AnodeAddress_get_type(address) != ANODE_ADDRESS_ANODE_256_40) |
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return ANODE_ERR_ADDRESS_INVALID; |
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return 0; |
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}
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