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lightning/common/cryptomsg.h

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headers: fix up header idempotent lines. For future reference, done via: for f in `find wire/ bitcoin/ common/ lightningd -name '*.h' ! -name 'gen*'`; do ID=`echo -n LIGHTNING/$f | tr 'a-z' 'A-Z' | tr -cs 'A-Z0-9' _`; sed 's/^#\(ifndef\|define\) .*_H$/#\1 '$ID/ < $f | sed 's,#endif /..*_H ./$,#endif /* '$ID' */,' | bagto $f; done Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
7 years ago
#ifndef LIGHTNING_COMMON_CRYPTOMSG_H
#define LIGHTNING_COMMON_CRYPTOMSG_H
lightningd/cryptomsg: routines to encrypt on the wire. After the handshake, it's a simple matter of AEAD and key rotation. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
8 years ago
#include "config.h"
#include <ccan/short_types/short_types.h>
cryptomsg: add towire/fromwire for crypto state. Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
8 years ago
#include <ccan/tal/tal.h>
crypto_state: move to its own file. In particular, the main daemon needs to pass it about (marshal/unmarshal) but it won&#39;t need to actually use it after the next patch. Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
7 years ago
#include <common/crypto_state.h>
lightningd/cryptomsg: routines to encrypt on the wire. After the handshake, it&#39;s a simple matter of AEAD and key rotation. Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
8 years ago
connectd/peer_exchange_initmsg: handle peer comms ourselves. connectd is the only user of the cryptomsg async APIs; better to open-code it here. We need to expose a little from cryptomsg(), but we remove the &#39;struct peer&#39; entirely from connectd. One trick is that we still need to defer telling lightningd when a peer reconnects (until it tells us the old one is disconnected). So now we generate the message for lightningd and send it once we&#39;re woken. Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
6 years ago
/* BOLT #8:
*
* ### Receiving and Decrypting Messages
*
* In order to decrypt the _next_ message in the network stream, the
* following steps are completed:
*
* 1. Read _exactly_ 18 bytes from the network buffer.
*/
#define CRYPTOMSG_HDR_SIZE 18
/* BOLT #8:
*
* 4. Read _exactly_ `l+16` bytes from the network buffer
*/
#define CRYPTOMSG_BODY_OVERHEAD 16
lightningd/cryptomsg: routines to encrypt on the wire. After the handshake, it&#39;s a simple matter of AEAD and key rotation. Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
8 years ago
lightningd/cryptomsg: discard unknown odd messages internally. This saves all callers having to handle it. Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
8 years ago
/* Low-level functions for sync comms: doesn't discard unknowns! */
crypto_sync: synchronous routines for inter-peer crypto. This is used by the opening daemon, for example. Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
8 years ago
u8 *cryptomsg_encrypt_msg(const tal_t *ctx,
struct crypto_state *cs,
const u8 *msg);
lightningd/crypto_sync: fix sync_crypto_write / sync_crypto_read wire_sync_write() adds length, but we already have it, so use write_all. sync_crypto_read() handed an on-stack buffer to cryptomsg_decrypt_header, which expected a tal() pointer, so use the known length instead. sync_crypto_read() also failed to read the tag; add that in (no overflow possible as 16 is an int, len is a u16). Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
8 years ago
bool cryptomsg_decrypt_header(struct crypto_state *cs, u8 hdr[18], u16 *lenp);
crypto_sync: synchronous routines for inter-peer crypto. This is used by the opening daemon, for example. Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
8 years ago
u8 *cryptomsg_decrypt_body(const tal_t *ctx,
struct crypto_state *cs, const u8 *in);
headers: fix up header idempotent lines. For future reference, done via: for f in `find wire/ bitcoin/ common/ lightningd -name &#39;*.h&#39; ! -name &#39;gen*&#39;`; do ID=`echo -n LIGHTNING/$f | tr &#39;a-z&#39; &#39;A-Z&#39; | tr -cs &#39;A-Z0-9&#39; _`; sed &#39;s/^#\(ifndef\|define\) .*_H$/#\1 &#39;$ID/ &lt; $f | sed &#39;s,#endif /..*_H ./$,#endif /* &#39;$ID&#39; */,&#39; | bagto $f; done Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
7 years ago
#endif /* LIGHTNING_COMMON_CRYPTOMSG_H */