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Fix xpub for masters.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2023-05-24 11:25:36 +02:00
parent a9fb170c58
commit 20dfbcaaed
1 changed files with 10 additions and 4 deletions
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6
src/hsm/cmd_bip_slip.c
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@@ -188,10 +188,16 @@ int cmd_bip_slip() {
memcpy(res_APDU + res_APDU_size, fgpt, 4);
res_APDU_size += 4;
if (pos > 1) {
res_APDU[res_APDU_size++] = path[pos - 1] >> 24;
res_APDU[res_APDU_size++] = path[pos - 1] >> 16;
res_APDU[res_APDU_size++] = path[pos - 1] >> 8;
res_APDU[res_APDU_size++] = path[pos - 1] & 0xff;
}
else { // Master
memset(res_APDU + res_APDU_size, 0, 4);
res_APDU_size += 4;
}
memcpy(res_APDU + res_APDU_size, chain, 32);
res_APDU_size += 32;
mbedtls_ecp_point_write_binary(&ctx.grp, &ctx.Q, MBEDTLS_ECP_PF_COMPRESSED, &tag_len, pubkey, sizeof(pubkey));