diff options
Diffstat (limited to 'src/device/device_ledger.cpp')
| -rw-r--r-- | src/device/device_ledger.cpp | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/device/device_ledger.cpp b/src/device/device_ledger.cpp index c59b648bd..4e89f835d 100644 --- a/src/device/device_ledger.cpp +++ b/src/device/device_ledger.cpp @@ -299,6 +299,7 @@ namespace hw { #define INS_PREFIX_HASH 0x7D #define INS_VALIDATE 0x7C #define INS_MLSAG 0x7E + #define INS_CLSAG 0x7F #define INS_CLOSE_TX 0x80 #define INS_GET_TX_PROOF 0xA0 @@ -2121,6 +2122,157 @@ namespace hw { return true; } + bool device_ledger::clsag_prepare(const rct::key &p, const rct::key &z, rct::key &I, rct::key &D, const rct::key &H, rct::key &a, rct::key &aG, rct::key &aH) { + AUTO_LOCK_CMD(); + #ifdef DEBUG_HWDEVICE + const rct::key p_x = hw::ledger::decrypt(p); + const rct::key z_x = hw::ledger::decrypt(z); + rct::key I_x; + rct::key D_x; + const rct::key H_x = H; + rct::key a_x; + rct::key aG_x; + rct::key aH_x; + this->controle_device->clsag_prepare(p_x, z_x, I_x, D_x, H_x, a_x, aG_x, aH_x); + #endif + + /* + rct::skpkGen(a,aG); // aG = a*G + rct::scalarmultKey(aH,H,a); // aH = a*H + rct::scalarmultKey(I,H,p); // I = p*H + rct::scalarmultKey(D,H,z); // D = z*H + */ + int offset = set_command_header_noopt(INS_CLSAG, 0x01); + //p + this->send_secret(p.bytes, offset); + //z + this->send_secret(z.bytes, offset); + //H + memmove(this->buffer_send+offset, H.bytes, 32); + offset += 32; + + this->buffer_send[4] = offset-5; + this->length_send = offset; + this->exchange(); + + offset = 0; + //a + this->receive_secret(a.bytes, offset); + //aG + memmove(aG.bytes, this->buffer_recv+offset, 32); + offset +=32; + //aH + memmove(aH.bytes, this->buffer_recv+offset, 32); + offset +=32; + //I = pH + memmove(I.bytes, this->buffer_recv+offset, 32); + offset +=32; + //D = zH + memmove(D.bytes, this->buffer_recv+offset, 32); + offset +=32; + + #ifdef DEBUG_HWDEVICE + hw::ledger::check32("clsag_prepare", "I", (char*)I_x.bytes, (char*)I.bytes); + hw::ledger::check32("clsag_prepare", "D", (char*)D_x.bytes, (char*)D.bytes); + hw::ledger::check32("clsag_prepare", "a", (char*)a_x.bytes, (char*)a.bytes); + hw::ledger::check32("clsag_prepare", "aG", (char*)aG_x.bytes, (char*)aG.bytes); + hw::ledger::check32("clsag_prepare", "aH", (char*)aH_x.bytes, (char*)aH.bytes); + #endif + + return true; + } + + bool device_ledger::clsag_hash(const rct::keyV &data, rct::key &hash) { + AUTO_LOCK_CMD(); + + #ifdef DEBUG_HWDEVICE + const rct::keyV data_x = data; + rct::key hash_x; + this->controle_device->mlsag_hash(data_x, hash_x); + #endif + + size_t cnt; + int offset; + + cnt = data.size(); + for (size_t i = 0; i<cnt; i++) { + offset = set_command_header(INS_CLSAG, 0x02, i+1); + //options + this->buffer_send[offset] = (i==(cnt-1))?0x00:0x80; //last + offset += 1; + //msg part + memmove(this->buffer_send+offset, data[i].bytes, 32); + offset += 32; + + this->buffer_send[4] = offset-5; + this->length_send = offset; + this->exchange(); + } + + //c/hash + memmove(hash.bytes, &this->buffer_recv[0], 32); + + #ifdef DEBUG_HWDEVICE + hw::ledger::check32("mlsag_hash", "hash", (char*)hash_x.bytes, (char*)hash.bytes); + #endif + return true; + } + + bool device_ledger::clsag_sign(const rct::key &c, const rct::key &a, const rct::key &p, const rct::key &z, const rct::key &mu_P, const rct::key &mu_C, rct::key &s) { + AUTO_LOCK_CMD(); + + #ifdef DEBUG_HWDEVICE + const rct::key c_x = c; + const rct::key a_x = hw::ledger::decrypt(a); + const rct::key p_x = hw::ledger::decrypt(p); + const rct::key z_x = hw::ledger::decrypt(z); + const rct::key mu_P_x = mu_P; + const rct::key mu_C_x = mu_C; + rct::key s_x; + this->controle_device->clsag_sign(c_x, a_x, p_x, z_x, mu_P_x, mu_C_x, s_x); + #endif + + /* + rct::key s0_p_mu_P; + sc_mul(s0_p_mu_P.bytes,mu_P.bytes,p.bytes); + rct::key s0_add_z_mu_C; + sc_muladd(s0_add_z_mu_C.bytes,mu_C.bytes,z.bytes,s0_p_mu_P.bytes); + sc_mulsub(s.bytes,c.bytes,s0_add_z_mu_C.bytes,a.bytes); + */ + + int offset = set_command_header_noopt(INS_CLSAG, 0x03); + + //c + //discard, unse internal one + //a + this->send_secret(a.bytes, offset); + //p + this->send_secret(p.bytes, offset); + //z + this->send_secret(z.bytes, offset); + //mu_P + memmove(this->buffer_send+offset, mu_P.bytes, 32); + offset += 32; + //mu_C + memmove(this->buffer_send+offset, mu_C.bytes, 32); + offset += 32; + + this->buffer_send[4] = offset-5; + this->length_send = offset; + this->exchange(); + + offset = 0; + //s + memmove(s.bytes, this->buffer_recv+offset, 32); + + #ifdef DEBUG_HWDEVICE + hw::ledger::check32("clsag_sign", "s", (char*)s_x.bytes, (char*)s.bytes); + #endif + + return true; + } + + bool device_ledger::close_tx() { AUTO_LOCK_CMD(); send_simple(INS_CLOSE_TX); |