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49 lines
1.5 KiB
49 lines
1.5 KiB
#ifndef LIGHTNING_BITCOIN_BASE58_H
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#define LIGHTNING_BITCOIN_BASE58_H
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#include "config.h"
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#include <ccan/crypto/ripemd160/ripemd160.h>
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#include <ccan/short_types/short_types.h>
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#include <ccan/tal/tal.h>
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#include <secp256k1.h>
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#include <stdbool.h>
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#include <stdlib.h>
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struct pubkey;
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struct privkey;
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struct bitcoin_address;
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/* Encoding is version byte + ripemd160 + 4-byte checksum == 200 bits => 2^200.
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*
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* Now, 58^34 < 2^200, but 58^35 > 2^200. So 35 digits is sufficient,
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* plus 1 terminator.
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*/
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#define BASE58_ADDR_MAX_LEN 36
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/* For encoding private keys, it's 302 bits.
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* 58^51 < 2^302, but 58^52 > 2^302. So 52 digits, plus one terminator. */
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#define BASE58_KEY_MAX_LEN 53
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/* Bitcoin address encoded in base58, with version and checksum */
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char *bitcoin_to_base58(const tal_t *ctx, bool test_net,
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const struct bitcoin_address *addr);
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bool bitcoin_from_base58(bool *test_net,
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struct bitcoin_address *addr,
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const char *base58, size_t len);
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/* P2SH address encoded as base58, with version and checksum */
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char *p2sh_to_base58(const tal_t *ctx, bool test_net,
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const struct ripemd160 *p2sh);
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bool p2sh_from_base58(bool *test_net,
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struct ripemd160 *p2sh,
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const char *base58, size_t len);
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char *base58_with_check(char dest[BASE58_ADDR_MAX_LEN],
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u8 buf[1 + sizeof(struct ripemd160) + 4]);
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bool key_from_base58(const char *base58, size_t base58_len,
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bool *test_net, struct privkey *priv, struct pubkey *key);
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void base58_get_checksum(u8 csum[4], const u8 buf[], size_t buflen);
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#endif /* LIGHTNING_BITCOIN_BASE58_H */
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