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thirdparty_base58: Merge in base58.c from libblkmaker

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This commit is contained in:
Luke Dashjr 2012-10-12 16:05:26 +00:00
parent e616e97e8c
commit 7f8feac462
2 changed files with 51 additions and 0 deletions
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49
src/thirdparty_base58.c
View File

@ -18,6 +18,55 @@
#include "libbase58.h"
bool _blkmk_b58tobin(void *bin, size_t binsz, const char *b58, size_t b58sz) {
return b58tobin(bin, &binsz, b58, b58sz);
}
int _blkmk_b58check(void *bin, size_t binsz, const char *base58str) {
if (!b58_sha256_impl)
b58_sha256_impl = blkmk_sha256_impl;
return b58check(bin, binsz, base58str, 34);
}
size_t blkmk_address_to_script(void *out, size_t outsz, const char *addr) {
unsigned char addrbin[25];
unsigned char *cout = out;
const size_t b58sz = strlen(addr);
int addrver;
size_t rv;
rv = sizeof(addrbin);
if (!b58_sha256_impl)
b58_sha256_impl = blkmk_sha256_impl;
if (!b58tobin(addrbin, &rv, addr, b58sz))
return 0;
addrver = b58check(addrbin, sizeof(addrbin), addr, b58sz);
switch (addrver) {
case 0: // Bitcoin pubkey hash
case 111: // Testnet pubkey hash
if (outsz < (rv = 25))
return rv;
cout[ 0] = 0x76; // OP_DUP
cout[ 1] = 0xa9; // OP_HASH160
cout[ 2] = 0x14; // push 20 bytes
memcpy(&cout[3], &addrbin[1], 20);
cout[23] = 0x88; // OP_EQUALVERIFY
cout[24] = 0xac; // OP_CHECKSIG
return rv;
case 5: // Bitcoin script hash
case 196: // Testnet script hash
if (outsz < (rv = 23))
return rv;
cout[ 0] = 0xa9; // OP_HASH160
cout[ 1] = 0x14; // push 20 bytes
memcpy(&cout[2], &addrbin[1], 20);
cout[22] = 0x87; // OP_EQUAL
return rv;
default:
return 0;
}
}
bool (*b58_sha256_impl)(void *, const void *, size_t) = NULL;
static const int8_t b58digits_map[] = {

2
src/thirdparty_base58.h
View File

@ -8,6 +8,8 @@
extern "C" {
#endif
extern size_t blkmk_address_to_script(void *out, size_t outsz, const char *addr);
extern bool (*b58_sha256_impl)(void *, const void *, size_t);
extern bool b58tobin(void *bin, size_t *binsz, const char *b58, size_t b58sz);