47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
#include <ccan/str/hex/hex.h>
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#include <assert.h>
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#include "pubkey.h"
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/* Must agree on key validity with bitcoin! Stolen from bitcoin/src/pubkey.h's
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* GetLen:
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* // Copyright (c) 2009-2010 Satoshi Nakamoto
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* // Copyright (c) 2009-2014 The Bitcoin Core developers
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* // Distributed under the MIT software license, see the accompanying
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* // file COPYING or http://www.opensource.org/licenses/mit-license.php.
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*/
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static unsigned int GetLen(unsigned char chHeader)
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{
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if (chHeader == 2 || chHeader == 3)
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return 33;
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if (chHeader == 4 || chHeader == 6 || chHeader == 7)
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return 65;
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return 0;
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}
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bool pubkey_valid(const u8 *first_char, size_t len)
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{
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if (len < 1)
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return false;
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return (len == GetLen(*first_char));
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}
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size_t pubkey_len(const struct pubkey *key)
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{
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size_t len = GetLen(key->key[0]);
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assert(len);
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return len;
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}
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bool pubkey_from_hexstr(const char *str, struct pubkey *key)
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{
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size_t slen = strlen(str), dlen;
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dlen = hex_data_size(slen);
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if (dlen != 33 && dlen != 65)
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return false;
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if (!hex_decode(str, slen, key->key, dlen))
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return false;
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return GetLen(key->key[0]) == dlen;
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}
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