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51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
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#include <ccan/array_size/array_size.h>
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#include <ccan/mem/mem.h>
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#include <ccan/str/hex/hex.h>
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#include <common/node_id.h>
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#include <common/type_to_string.h>
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#include <common/utils.h>
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/* Convert from pubkey to compressed pubkey. */
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void node_id_from_pubkey(struct node_id *id, const struct pubkey *key)
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{
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size_t outlen = ARRAY_SIZE(id->k);
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if (!secp256k1_ec_pubkey_serialize(secp256k1_ctx, id->k, &outlen,
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&key->pubkey,
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SECP256K1_EC_COMPRESSED))
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abort();
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}
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WARN_UNUSED_RESULT
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bool pubkey_from_node_id(struct pubkey *key, const struct node_id *id)
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{
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return secp256k1_ec_pubkey_parse(secp256k1_ctx, &key->pubkey,
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memcheck(id->k, sizeof(id->k)),
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sizeof(id->k));
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}
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/* It's valid if we can convert to a real pubkey. */
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bool node_id_valid(const struct node_id *id)
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{
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struct pubkey key;
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return pubkey_from_node_id(&key, id);
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}
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/* Convert to hex string of SEC1 encoding */
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char *node_id_to_hexstr(const tal_t *ctx, const struct node_id *id)
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{
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return tal_hexstr(ctx, id->k, sizeof(id->k));
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}
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REGISTER_TYPE_TO_STRING(node_id, node_id_to_hexstr);
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/* Convert from hex string of SEC1 encoding */
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bool node_id_from_hexstr(const char *str, size_t slen, struct node_id *id)
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{
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return hex_decode(str, slen, id->k, sizeof(id->k))
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&& node_id_valid(id);
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}
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int node_id_cmp(const struct node_id *a, const struct node_id *b)
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{
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return memcmp(a->k, b->k, sizeof(a->k));
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}
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