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bitcoin/pubkey: add pubkey_from_secret.

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Really, we should have a 'struct point' since we don't use all points
as pubkeys.  But this is the minimal fix to avoid type cast nastiness.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2018-07-23 11:53:02 +09:30
committed by Christian Decker
parent 9dd0415a15
commit 289e39a0a3
3 changed files with 13 additions and 13 deletions
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14
bitcoin/pubkey.c
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@@ -28,14 +28,18 @@ void pubkey_to_der(u8 der[PUBKEY_DER_LEN], const struct pubkey *key)
assert(outlen == PUBKEY_DER_LEN);
}
/* Pubkey from privkey */
bool pubkey_from_secret(const struct secret *secret, struct pubkey *key)
{
if (!secp256k1_ec_pubkey_create(secp256k1_ctx,
&key->pubkey, secret->data))
return false;
return true;
}
bool pubkey_from_privkey(const struct privkey *privkey,
struct pubkey *key)
{
if (!secp256k1_ec_pubkey_create(secp256k1_ctx,
&key->pubkey, privkey->secret.data))
return false;
return true;
return pubkey_from_secret(&privkey->secret, key);
}
bool pubkey_from_hexstr(const char *derstr, size_t slen, struct pubkey *key)