update license info

circlefin · Oct 20, 2023 · fdd9365 · fdd9365
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diff --git a/.github/workflows/gofmt.yml b/.github/workflows/gofmt.yml
@@ -1,5 +1,7 @@
 #  Copyright (c) 2023, Circle Internet Financial, LTD.
 #  All rights reserved
+#  SPDX-License-Identifier: Apache-2.0
+
 
 name: Go-fmt
 on: push

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -1,5 +1,6 @@
 #  Copyright (c) 2023, Circle Internet Financial, LTD.
 #  All rights reserved
+#  SPDX-License-Identifier: Apache-2.0
 
 name: Go Test
 on:

diff --git a/LICENSE2 → LICENSE.Apache-2.0 b/LICENSE2 → LICENSE.Apache-2.0
diff --git a/LICENSE → LICENSE.MIT b/LICENSE → LICENSE.MIT
diff --git a/Makefile b/Makefile
@@ -1,5 +1,7 @@
 #  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
 #  All rights reserved
+#  SPDX-License-Identifier: Apache-2.0 AND MIT
+
 
 MODULE = github.com/bnb-chain/tss-lib
 PACKAGES = $(shell go list ./... | grep -v '/vendor/')

diff --git a/README.md b/README.md
@@ -1,16 +1,15 @@
 # Multi-Party Threshold Signature Scheme
-[![MIT licensed][1]][2] [![GoDoc][3]][4] [![Go Report Card][5]][6]
 
-[1]: https://img.shields.io/badge/license-MIT-blue.svg
-[2]: LICENSE
-[3]: https://godoc.org/github.com/bnb-chain/tss-lib?status.svg
-[4]: https://godoc.org/github.com/bnb-chain/tss-lib
-[5]: https://goreportcard.com/badge/github.com/bnb-chain/tss-lib
-[6]: https://goreportcard.com/report/github.com/bnb-chain/tss-lib
+## License
 
-Permissively MIT Licensed.
+This work is dual-licensed under Apache 2.0 and MIT.
+Portions contributed by Circle are licensed under Apache 2.0;
+see SPDX-License-Identifier in the file headings.
 
-Note! This is a library for developers. You may find a TSS tool that you can use with the Binance Chain CLI [here](https://docs.binance.org/tss.html).
+`SPDX-License-Identifier: Apache-2.0 AND MIT`
+
+## Note
+This is a library for developers. You may find a TSS tool that you can use with the Binance Chain CLI [here](https://docs.binance.org/tss.html).
 
 ## Introduction
 This is an implementation of multi-party {t,n}-threshold ECDSA (Elliptic Curve Digital Signature Algorithm) based on Gennaro and Goldfeder CCS 2018 [1] and EdDSA (Edwards-curve Digital Signature Algorithm) following a similar approach.

diff --git a/common/int.go b/common/int.go
@@ -6,6 +6,7 @@
 //
 //  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0 AND MIT
 
 package common
 

diff --git a/common/random.go b/common/random.go
@@ -6,6 +6,7 @@
 //
 //  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0 AND MIT
 
 package common
 

diff --git a/common/safe_prime.go b/common/safe_prime.go
@@ -6,6 +6,7 @@
 //
 //  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0 AND MIT
 
 package common
 

diff --git a/crypto/accmta/share_protocol.go b/crypto/accmta/share_protocol.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 
 package accmta
 

diff --git a/crypto/accmta/share_protocol_test.go b/crypto/accmta/share_protocol_test.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 
 package accmta_test
 

diff --git a/crypto/paillier/paillier.go b/crypto/paillier/paillier.go
@@ -3,7 +3,11 @@
 // This file is part of Binance. The full Binance copyright notice, including
 // terms governing use, modification, and redistribution, is contained in the
 // file LICENSE at the root of the source code distribution tree.
-
+//
+//  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
+//  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0 AND MIT
+//
 // The Paillier Crypto-system is an additive crypto-system. This means that given two ciphertexts, one can perform operations equivalent to adding the respective plain texts.
 // Additionally, Paillier Crypto-system supports further computations:
 //
@@ -13,8 +17,6 @@
 //
 // Implementation adheres to GG18Spec (6)
 //
-//  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
-//  All rights reserved
 
 package paillier
 

diff --git a/crypto/paillier/paillier_test.go b/crypto/paillier/paillier_test.go
@@ -6,6 +6,7 @@
 //
 //  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0 AND MIT
 
 package paillier_test
 

diff --git a/crypto/zkproofs/README.md b/crypto/zkproofs/README.md
@@ -1,5 +1,6 @@
 Copyright (c) 2023, Circle Internet Financial, LTD. 
-All rights reserved
+All rights reserved.
+SPDX-License-Identifier: Apache-2.0
 
 # Go package crypto/zkproofs
 This package contains various zero knowledge proofs of knowledge. The source of these 

diff --git a/crypto/zkproofs/aff_g_inv_proof.go b/crypto/zkproofs/aff_g_inv_proof.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 // This file modifies the proof aff-g from CGG21 Section 6.2 Figure 15.
 // the prover has secret input (x, y, rho, rhoy) while the

diff --git a/crypto/zkproofs/aff_g_proof.go b/crypto/zkproofs/aff_g_proof.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 // This file implements proof aff-g from CGG21 Section 6.2 Figure 15.
 // Tbe prover has secret input (x, y, rho, rhoy) and

diff --git a/crypto/zkproofs/aff_g_proof_test.go b/crypto/zkproofs/aff_g_proof_test.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 package zkproofs_test
 

diff --git a/crypto/zkproofs/aff_p_proof.go b/crypto/zkproofs/aff_p_proof.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 // This file implements proof aff-p from CGG21 Appendix C.3 Figure 26.
 // The prover has secret input (x, y, rho, rhox, rhoy) and the

diff --git a/crypto/zkproofs/aff_p_proof_test.go b/crypto/zkproofs/aff_p_proof_test.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 package zkproofs_test
 

diff --git a/crypto/zkproofs/dec_proof.go b/crypto/zkproofs/dec_proof.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 // This file implements proof dec in CGG21 Appendix C6 Figure 30.
 // The prover has secret input (y, rho) and

diff --git a/crypto/zkproofs/dec_proof_test.go b/crypto/zkproofs/dec_proof_test.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 package zkproofs_test
 

diff --git a/crypto/zkproofs/enc_proof.go b/crypto/zkproofs/enc_proof.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 // This file implements proof enc from CGG21 Section 6.1 Figure 14.
 // The prover has secret input (k, rho) and the

diff --git a/crypto/zkproofs/enc_proof_test.go b/crypto/zkproofs/enc_proof_test.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 package zkproofs_test
 

diff --git a/crypto/zkproofs/logstar_proof.go b/crypto/zkproofs/logstar_proof.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 // This file implements proof log* from CGG21 Appendix C.2 Figure 25.
 // The Prover has secret input (x, rho) and

diff --git a/crypto/zkproofs/logstar_proof_test.go b/crypto/zkproofs/logstar_proof_test.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 package zkproofs_test
 

diff --git a/crypto/zkproofs/mul_proof.go b/crypto/zkproofs/mul_proof.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 // This file implements proof mul from CGG21 Appendix C.6 Figure 29.
 // The prover has secret input (x, rho, rhox) and

diff --git a/crypto/zkproofs/mul_proof_test.go b/crypto/zkproofs/mul_proof_test.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 package zkproofs_test
 

diff --git a/crypto/zkproofs/mulstar_proof.go b/crypto/zkproofs/mulstar_proof.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 // This file implements proof mul* from CGG21 Appendix C.6 Figure 31.
 // The prover has secret (x, rho) and

diff --git a/crypto/zkproofs/mulstar_proof_test.go b/crypto/zkproofs/mulstar_proof_test.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 package zkproofs_test
 

diff --git a/crypto/zkproofs/zkproofs.go b/crypto/zkproofs/zkproofs.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 package zkproofs
 

diff --git a/crypto/zkproofs/zkproofs_test.go b/crypto/zkproofs/zkproofs_test.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 package zkproofs_test
 

diff --git a/ecdsa/accsigning/debuglog.go b/ecdsa/accsigning/debuglog.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package accsigning

diff --git a/ecdsa/accsigning/ecdsa-accsigning.pb.go b/ecdsa/accsigning/ecdsa-accsigning.pb.go
diff --git a/ecdsa/accsigning/finalize.go b/ecdsa/accsigning/finalize.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package accsigning

diff --git a/ecdsa/accsigning/local_party.go b/ecdsa/accsigning/local_party.go
@@ -6,6 +6,7 @@
 //
 //  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0 AND MIT
 //
 
 package accsigning

diff --git a/ecdsa/accsigning/messages.go b/ecdsa/accsigning/messages.go
@@ -1,5 +1,6 @@
 // Copyright (c) 2023, Circle Internet Financial, LTD.
 // All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 package accsigning
 
 import (

diff --git a/ecdsa/accsigning/round_1.go b/ecdsa/accsigning/round_1.go
@@ -6,6 +6,7 @@
 //
 //  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0 AND MIT
 //
 
 package accsigning

diff --git a/ecdsa/accsigning/round_2.go b/ecdsa/accsigning/round_2.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package accsigning

diff --git a/ecdsa/accsigning/round_3.go b/ecdsa/accsigning/round_3.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package accsigning

diff --git a/ecdsa/accsigning/round_4.go b/ecdsa/accsigning/round_4.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package accsigning

diff --git a/ecdsa/accsigning/round_5.go b/ecdsa/accsigning/round_5.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package accsigning

diff --git a/ecdsa/accsigning/round_test.go b/ecdsa/accsigning/round_test.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package accsigning

diff --git a/ecdsa/accsigning/round_test_util.go b/ecdsa/accsigning/round_test_util.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package accsigning

diff --git a/ecdsa/accsigning/rounds.go b/ecdsa/accsigning/rounds.go
@@ -6,6 +6,7 @@
 //
 //  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0 AND MIT
 //
 
 package accsigning

diff --git a/ecdsa/cggplus/ecdsa-cggplus.pb.go b/ecdsa/cggplus/ecdsa-cggplus.pb.go
diff --git a/ecdsa/cggplus/finalize.go b/ecdsa/cggplus/finalize.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package cggplus

diff --git a/ecdsa/cggplus/local_party.go b/ecdsa/cggplus/local_party.go
@@ -6,6 +6,7 @@
 //
 //  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0 AND MIT
 //
 
 package cggplus

diff --git a/ecdsa/cggplus/messages.go b/ecdsa/cggplus/messages.go
@@ -1,5 +1,6 @@
 // Copyright (c) 2023, Circle Internet Financial, LTD.
 // All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 package cggplus
 
 import (

diff --git a/ecdsa/cggplus/round_1.go b/ecdsa/cggplus/round_1.go
@@ -6,6 +6,7 @@
 //
 //  Portions Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0 AND MIT
 //
 
 package cggplus

diff --git a/ecdsa/cggplus/round_2.go b/ecdsa/cggplus/round_2.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package cggplus

diff --git a/ecdsa/cggplus/round_3.go b/ecdsa/cggplus/round_3.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package cggplus

diff --git a/ecdsa/cggplus/round_4.go b/ecdsa/cggplus/round_4.go
@@ -1,5 +1,6 @@
 //  Copyright (c) 2023, Circle Internet Financial, LTD.
 //  All rights reserved
+//  SPDX-License-Identifier: Apache-2.0
 //
 
 package cggplus