138 lines
3.6 KiB
C
138 lines
3.6 KiB
C
#include <ccan/crypto/sha256/sha256.h>
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#include "bitcoin/pubkey.h"
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#include "bitcoin/signature.h"
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#include "protobuf_convert.h"
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Signature *signature_to_proto(const tal_t *ctx, const struct signature *sig)
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{
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Signature *pb = tal(ctx, Signature);
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signature__init(pb);
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assert(sig_valid(sig));
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#ifdef USE_SCHNORR
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memcpy(&pb->r1, sig->schnorr, 8);
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memcpy(&pb->r2, sig->schnorr + 8, 8);
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memcpy(&pb->r3, sig->schnorr + 16, 8);
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memcpy(&pb->r4, sig->schnorr + 24, 8);
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memcpy(&pb->s1, sig->schnorr + 32, 8);
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memcpy(&pb->s2, sig->schnorr + 40, 8);
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memcpy(&pb->s3, sig->schnorr + 48, 8);
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memcpy(&pb->s4, sig->schnorr + 56, 8);
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#else
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/* FIXME: Need a portable way to encode signatures in libsecp! */
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/* Kill me now... */
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memcpy(&pb->r1, sig->sig.data, 8);
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memcpy(&pb->r2, sig->sig.data + 8, 8);
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memcpy(&pb->r3, sig->sig.data + 16, 8);
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memcpy(&pb->r4, sig->sig.data + 24, 8);
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memcpy(&pb->s1, sig->sig.data + 32, 8);
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memcpy(&pb->s2, sig->sig.data + 40, 8);
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memcpy(&pb->s3, sig->sig.data + 48, 8);
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memcpy(&pb->s4, sig->sig.data + 56, 8);
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#endif
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return pb;
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}
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bool proto_to_signature(const Signature *pb, struct signature *sig)
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{
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/* Kill me again. */
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#ifdef USE_SCHNORR
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memcpy(sig->schnorr, &pb->r1, 8);
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memcpy(sig->schnorr + 8, &pb->r2, 8);
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memcpy(sig->schnorr + 16, &pb->r3, 8);
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memcpy(sig->schnorr + 24, &pb->r4, 8);
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memcpy(sig->schnorr + 32, &pb->s1, 8);
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memcpy(sig->schnorr + 40, &pb->s2, 8);
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memcpy(sig->schnorr + 48, &pb->s3, 8);
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memcpy(sig->schnorr + 56, &pb->s4, 8);
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#else
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/* FIXME: Need a portable way to encode signatures in libsecp! */
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memcpy(sig->sig.data, &pb->r1, 8);
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memcpy(sig->sig.data + 8, &pb->r2, 8);
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memcpy(sig->sig.data + 16, &pb->r3, 8);
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memcpy(sig->sig.data + 24, &pb->r4, 8);
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memcpy(sig->sig.data + 32, &pb->s1, 8);
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memcpy(sig->sig.data + 40, &pb->s2, 8);
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memcpy(sig->sig.data + 48, &pb->s3, 8);
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memcpy(sig->sig.data + 56, &pb->s4, 8);
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#endif
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return sig_valid(sig);
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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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struct pubkey check;
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bitcoin_pubkey__init(p);
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p->key.len = pubkey_derlen(key);
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p->key.data = tal_dup_arr(p, u8, key->der, p->key.len, 0);
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assert(pubkey_from_der(p->key.data, p->key.len, &check));
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assert(pubkey_eq(&check, key));
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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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return pubkey_from_der(pb->key.data, pb->key.len, key);
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}
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Sha256Hash *sha256_to_proto(const tal_t *ctx, const struct sha256 *hash)
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{
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Sha256Hash *h = tal(ctx, Sha256Hash);
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sha256_hash__init(h);
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/* Kill me now... */
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memcpy(&h->a, hash->u.u8, 8);
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memcpy(&h->b, hash->u.u8 + 8, 8);
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memcpy(&h->c, hash->u.u8 + 16, 8);
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memcpy(&h->d, hash->u.u8 + 24, 8);
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return h;
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}
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void proto_to_sha256(const Sha256Hash *pb, struct sha256 *hash)
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{
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/* Kill me again. */
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memcpy(hash->u.u8, &pb->a, 8);
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memcpy(hash->u.u8 + 8, &pb->b, 8);
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memcpy(hash->u.u8 + 16, &pb->c, 8);
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memcpy(hash->u.u8 + 24, &pb->d, 8);
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}
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static bool proto_to_locktime(const Locktime *l, uint32_t off,
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uint32_t *locktime)
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{
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switch (l->locktime_case) {
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case LOCKTIME__LOCKTIME_SECONDS:
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*locktime = off + l->seconds;
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/* Check for wrap, or too low value */
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if (*locktime < 500000000)
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return false;
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break;
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case LOCKTIME__LOCKTIME_BLOCKS:
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if (l->blocks >= 500000000)
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return false;
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*locktime = l->blocks;
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break;
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default:
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return false;
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}
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return true;
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}
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bool proto_to_rel_locktime(const Locktime *l, uint32_t *locktime)
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{
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return proto_to_locktime(l, 500000000, locktime);
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}
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bool proto_to_abs_locktime(const Locktime *l, uint32_t *locktime)
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{
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return proto_to_locktime(l, 0, locktime);
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}
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