| 47 | } |
| 48 | |
| 49 | bool derive_basepoints(const struct secret *seed, |
| 50 | struct pubkey *funding_pubkey, |
| 51 | struct basepoints *basepoints, |
| 52 | struct secrets *secrets, |
| 53 | struct sha256 *shaseed) |
| 54 | { |
| 55 | struct keys keys; |
| 56 | |
| 57 | derive_keys(seed, &keys); |
| 58 | |
| 59 | if (secrets) { |
| 60 | secrets->funding_privkey = keys.f; |
| 61 | secrets->revocation_basepoint_secret = keys.r.secret; |
| 62 | secrets->payment_basepoint_secret = keys.p.secret; |
| 63 | secrets->htlc_basepoint_secret = keys.h.secret; |
| 64 | secrets->delayed_payment_basepoint_secret = keys.d.secret; |
| 65 | } |
| 66 | |
| 67 | if (funding_pubkey) { |
| 68 | if (!pubkey_from_privkey(&keys.f, funding_pubkey)) |
| 69 | return false; |
| 70 | } |
| 71 | |
| 72 | if (basepoints) { |
| 73 | if (!pubkey_from_privkey(&keys.r, &basepoints->revocation) |
| 74 | || !pubkey_from_privkey(&keys.p, &basepoints->payment) |
| 75 | || !pubkey_from_privkey(&keys.h, &basepoints->htlc) |
| 76 | || !pubkey_from_privkey(&keys.d, &basepoints->delayed_payment)) |
| 77 | return false; |
| 78 | } |
| 79 | |
| 80 | /* BOLT #3: |
| 81 | * |
| 82 | * A node: |
| 83 | * - MUST select an unguessable 256-bit seed for each connection, |
| 84 | * - MUST NOT reveal the seed. |
| 85 | */ |
| 86 | if (shaseed) |
| 87 | *shaseed = keys.shaseed; |
| 88 | |
| 89 | return true; |
| 90 | } |
| 91 | |
| 92 | bool per_commit_secret(const struct sha256 *shaseed, |
| 93 | struct secret *commit_secret, |