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bip32: Add hdnode_nem_get_shared_key

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This commit is contained in:
Saleem Rashid 2017-06-01 16:12:33 +01:00 committed by Pavol Rusnak
parent e1a511092a
commit abda0f6504
2 changed files with 22 additions and 0 deletions
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20
bip32.c
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@ -456,6 +456,26 @@ int hdnode_get_nem_address(HDNode *node, uint8_t version, char *address) {
hdnode_fill_public_key(node);
return nem_get_address(&node->public_key[1], version, address);
}
int hdnode_get_nem_shared_key(const HDNode *node, const ed25519_public_key peer_public_key, const uint8_t *salt, ed25519_public_key mul, uint8_t *shared_key) {
if (node->curve != &ed25519_keccak_info) {
return 0;
}
// sizeof(ed25519_public_key) == SHA3_256_DIGEST_LENGTH
if (mul == NULL) mul = shared_key;
if (ed25519_scalarmult_keccak(mul, node->private_key, peer_public_key)) {
return 0;
}
for (size_t i = 0; i < 32; i++) {
shared_key[i] = mul[i] ^ salt[i];
}
keccak_256(shared_key, 32, shared_key);
return 1;
}
#endif
// msg is a data to be signed

2
bip32.h
View File

@ -28,6 +28,7 @@
#include <stdlib.h>
#include <stdbool.h>
#include "ecdsa.h"
#include "ed25519.h"
#include "options.h"
typedef struct {
@ -74,6 +75,7 @@ int hdnode_get_ethereum_pubkeyhash(const HDNode *node, uint8_t *pubkeyhash);
#if USE_NEM
int hdnode_get_nem_address(HDNode *node, uint8_t version, char *address);
int hdnode_get_nem_shared_key(const HDNode *node, const ed25519_public_key peer_public_key, const uint8_t *salt, ed25519_public_key mul, uint8_t *shared_key);
#endif
int hdnode_sign(HDNode *node, const uint8_t *msg, uint32_t msg_len, uint8_t *sig, uint8_t *pby, int (*is_canonical)(uint8_t by, uint8_t sig[64]));