48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
#ifndef LIGHTNING_BASE58_H
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#define LIGHTNING_BASE58_H
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/* FIXME: Use libsecpk1 */
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#include <ccan/tal/tal.h>
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#include <ccan/short_types/short_types.h>
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#include <openssl/bn.h>
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#include <openssl/ec.h>
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#include <openssl/ripemd.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 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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bool ripemd_from_base58(u8 *version, u8 ripemd160[RIPEMD160_DIGEST_LENGTH],
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const char *base58);
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char *base58_with_check(char dest[BASE58_ADDR_MAX_LEN],
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u8 buf[1 + RIPEMD160_DIGEST_LENGTH + 4]);
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char *key_to_base58(const tal_t *ctx, bool test_net, EC_KEY *key);
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EC_KEY *key_from_base58(const char *base58, size_t base58_len,
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bool *test_net, struct pubkey *key);
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bool raw_decode_base_n(BIGNUM *bn, const char *src, size_t len, int base);
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bool raw_decode_base58(BIGNUM *bn, const char *src, size_t len);
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void base58_get_checksum(u8 csum[4], const u8 buf[], size_t buflen);
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#endif /* PETTYCOIN_BASE58_H */
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