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struct secret: use everywhere.

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We alternated between using a sha256 and using a privkey, but there are
numerous places where we have a random 32 bytes which are neither.

This fixes many of them (plus, struct privkey is now defined in terms of
struct secret).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2017-05-06 11:49:44 +09:30
parent 42601c29d7
commit b99c5620ef
39 changed files with 250 additions and 215 deletions
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11
lightningd/sphinx.h
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@@ -87,7 +87,7 @@ struct onionpacket *create_onionpacket(
const u8 * sessionkey,
const u8 *assocdata,
const size_t assocdatalen,
struct sha256 **path_secrets
struct secret **path_secrets
);
/**
@@ -162,7 +162,8 @@ struct onionreply {
* HMAC
* @failure_msg: message (must support tal_len)
*/
u8 *create_onionreply(const tal_t *ctx, const u8 *shared_secret, const u8 *failure_msg);
u8 *create_onionreply(const tal_t *ctx, const struct secret *shared_secret,
const u8 *failure_msg);
/**
* wrap_onionreply - Add another encryption layer to the reply.
@@ -172,7 +173,8 @@ u8 *create_onionreply(const tal_t *ctx, const u8 *shared_secret, const u8 *failu
* encryption.
* @reply: the reply to wrap
*/
u8 *wrap_onionreply(const tal_t *ctx, const u8 *shared_secret, const u8 *reply);
u8 *wrap_onionreply(const tal_t *ctx, const struct secret *shared_secret,
const u8 *reply);
/**
* unwrap_onionreply - Remove layers, check integrity and parse reply
@@ -182,7 +184,8 @@ u8 *wrap_onionreply(const tal_t *ctx, const u8 *shared_secret, const u8 *reply);
* @numhops: path length and number of shared_secrets provided
* @reply: the incoming reply
*/
struct onionreply *unwrap_onionreply(const tal_t *ctx, u8 **shared_secrets,
struct onionreply *unwrap_onionreply(const tal_t *ctx,
const struct secret *shared_secrets,
const int numhops, const u8 *reply);
#endif /* LIGHTNING_DAEMON_SPHINX_H */