55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
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#include "pubkey.h"
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#include <openssl/ecdsa.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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static bool valid_pubkey(const BitcoinPubkey *key)
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{
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if (key->key.len < 1)
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return false;
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return (key->key.len == GetLen(key->key.data[0]));
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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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BitcoinPubkey *pubkey_to_proto(const tal_t *ctx, const struct pubkey *key)
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{
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BitcoinPubkey *p = tal(ctx, BitcoinPubkey);
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bitcoin_pubkey__init(p);
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p->key.len = pubkey_len(key);
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p->key.data = tal_dup_arr(p, u8, key->key, p->key.len, 0);
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assert(valid_pubkey(p));
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return p;
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}
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bool proto_to_pubkey(const BitcoinPubkey *pb, struct pubkey *key)
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{
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if (!valid_pubkey(pb))
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return false;
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memcpy(key->key, pb->key.data, pb->key.len);
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return true;
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}
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