| 62 | } |
| 63 | |
| 64 | bool derive_basepoints(const struct secret *seed, |
| 65 | struct pubkey *funding_pubkey, |
| 66 | struct basepoints *basepoints, |
| 67 | struct secrets *secrets, |
| 68 | struct sha256 *shaseed) |
| 69 | { |
| 70 | struct keys keys; |
| 71 | |
| 72 | derive_keys(seed, &keys); |
| 73 | |
| 74 | if (secrets) { |
| 75 | secrets->funding_privkey = keys.f; |
| 76 | secrets->revocation_basepoint_secret = keys.r.secret; |
| 77 | secrets->payment_basepoint_secret = keys.p.secret; |
| 78 | secrets->htlc_basepoint_secret = keys.h.secret; |
| 79 | secrets->delayed_payment_basepoint_secret = keys.d.secret; |
| 80 | } |
| 81 | |
| 82 | if (funding_pubkey) { |
| 83 | if (!pubkey_from_privkey(&keys.f, funding_pubkey)) |
| 84 | return false; |
| 85 | } |
| 86 | |
| 87 | if (basepoints) { |
| 88 | if (!pubkey_from_privkey(&keys.r, &basepoints->revocation) |
| 89 | || !pubkey_from_privkey(&keys.p, &basepoints->payment) |
| 90 | || !pubkey_from_privkey(&keys.h, &basepoints->htlc) |
| 91 | || !pubkey_from_privkey(&keys.d, &basepoints->delayed_payment)) |
| 92 | return false; |
| 93 | } |
| 94 | |
| 95 | /* BOLT #3: |
| 96 | * |
| 97 | * A node: |
| 98 | * - MUST select an unguessable 256-bit seed for each connection, |
| 99 | * - MUST NOT reveal the seed. |
| 100 | */ |
| 101 | if (shaseed) |
| 102 | *shaseed = keys.shaseed; |
| 103 | |
| 104 | return true; |
| 105 | } |
| 106 | |
| 107 | bool per_commit_secret(const struct sha256 *shaseed, |
| 108 | struct secret *commit_secret, |