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Use raw 64-byte signatures in protocol.

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DER encoding introduces problems for non-canonical encodings; we should
do that only at the lightning<->bitcoin interface.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2015-06-01 11:56:09 +09:30
parent 64b443dcd9
commit eec612af9f
11 changed files with 348 additions and 187 deletions
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34
lightning.proto
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@@ -5,7 +5,7 @@
// Helper Types
//
// Protobufs don't have fixed-length fields, so this is a hack.
// Protobufs don't have fixed-length fields, so these are a hack.
message sha256_hash {
required fixed64 a = 1;
required fixed64 b = 2;
@@ -13,6 +13,17 @@ message sha256_hash {
required fixed64 d = 4;
}
message signature {
required fixed64 r1 = 1;
required fixed64 r2 = 2;
required fixed64 r3 = 3;
required fixed64 r4 = 4;
required fixed64 s1 = 5;
required fixed64 s2 = 6;
required fixed64 s3 = 7;
required fixed64 s4 = 8;
}
// Identifies consumption of a bitcoin output.
message bitcoin_input {
// This is the transaction ID.
@@ -31,11 +42,6 @@ message bitcoin_output {
required bytes script = 2;
}
// A signature to use for a transaction; DER encoded with sigtype at the end.
message bitcoin_signature {
required bytes der_then_sigtype = 1;
};
// Pubkey for commitment transaction input.
message bitcoin_pubkey {
// Either 65 or 33 bytes.
@@ -82,7 +88,7 @@ message open_channel {
// Supply signature for commitment tx
message open_commit_sig {
required bitcoin_signature sig = 1;
required signature sig = 1;
}
// Supply ScriptSig for each anchor tx inputs.
@@ -116,18 +122,18 @@ message update {
// Change in current payment to-me (implies reverse to-you).
required sint64 delta = 2;
// Signature for new commitment tx.
required bitcoin_signature sig = 3;
required signature sig = 3;
// Signature for old anchor (if any)
optional bitcoin_signature old_anchor_sig = 4;
optional signature old_anchor_sig = 4;
// FIXME: optional HTLC ops.
}
// OK, I accept that update.
message update_accept {
// Signature for new commitment tx.
required bitcoin_signature sig = 1;
required signature sig = 1;
// Signature for old anchor (if any)
optional bitcoin_signature old_anchor_sig = 2;
optional signature old_anchor_sig = 2;
// Hash preimage which revokes old commitment tx.
required sha256_hash revocation_preimage = 3;
}
@@ -151,7 +157,7 @@ message new_anchor_ack {
// Now we both send signatures for new commit sig.
message new_anchor_commit_sig {
required bitcoin_signature sig = 1;
required signature sig = 1;
}
// Here are the script sigs for the new anchor's new inputs.
@@ -169,14 +175,14 @@ message new_anchor_complete {
message close_channel {
// This is our signature a new transaction which spends my current
// commitment tx output 0 (which is 2/2) to script_to_me.
required bitcoin_signature sig = 1;
required signature sig = 1;
}
// OK, here's my sig so you can broadcast it too.
message close_channel_complete {
// This is our signature a new transaction which spends your current
// commitment tx output 0 (which is 2/2) to your script_to_me.
required bitcoin_signature sig = 1;
required signature sig = 1;
}
// This means we're going to hang up; it's to help diagnose only!