init hashes

Create test hashes for SHA256 and Poseidon

risc0/poseidon_nullifier_test/.gitignore

@@ -0,0 +1,4 @@
+.DS_Store
+Cargo.lock
+methods/guest/Cargo.lock
+target/

risc0/poseidon_nullifier_test/Cargo.toml

@@ -0,0 +1,11 @@
+[workspace]
+resolver = "2"
+members = ["host", "methods"]
+
+# Always optimize; building and running the guest takes much longer without optimization.
+[profile.dev]
+opt-level = 3
+
+[profile.release]
+debug = 1
+lto = true

risc0/poseidon_nullifier_test/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

risc0/poseidon_nullifier_test/README.md

@@ -0,0 +1,12 @@
+Run test with proof generation:
+
+```sh
+./test_proof.sh
+```
+
+Run test without proof generation:
+
+```sh
+./test_without_proof.sh
+```
+

risc0/poseidon_nullifier_test/host/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "host"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+methods = { path = "../methods" }
+risc0-zkvm = { version = "^2.2.0" }
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+serde = "1.0"

risc0/poseidon_nullifier_test/host/src/main.rs

@@ -0,0 +1,56 @@
+// These constants represent the RISC-V ELF and the image ID generated by risc0-build.
+// The ELF is used for proving and the ID is used for verification.
+use methods::{
+    GUEST_NULLIFIER_TEST_ELF, GUEST_NULLIFIER_TEST_ID
+};
+use risc0_zkvm::{default_prover, ExecutorEnv};
+
+fn main() {
+    // Initialize tracing. In order to view logs, run `RUST_LOG=info cargo run`
+    tracing_subscriber::fmt()
+        .with_env_filter(tracing_subscriber::filter::EnvFilter::from_default_env())
+        .init();
+
+    // An executor environment describes the configurations for the zkVM
+    // including program inputs.
+    // A default ExecutorEnv can be created like so:
+    // `let env = ExecutorEnv::builder().build().unwrap();`
+    // However, this `env` does not have any inputs.
+    //
+    // To add guest input to the executor environment, use
+    // ExecutorEnvBuilder::write().
+    // To access this method, you'll need to use ExecutorEnv::builder(), which
+    // creates an ExecutorEnvBuilder. When you're done adding input, call
+    // ExecutorEnvBuilder::build().
+
+    // For example:
+    let input: u32 = 15 * u32::pow(2, 27) + 1;
+    let env = ExecutorEnv::builder()
+        .write(&input)
+        .unwrap()
+        .build()
+        .unwrap();
+
+    // Obtain the default prover.
+    let prover = default_prover();
+
+    // Proof information by proving the specified ELF binary.
+    // This struct contains the receipt along with statistics about execution of the guest
+    let prove_info = prover
+        .prove(env, GUEST_NULLIFIER_TEST_ELF)
+        .unwrap();
+
+    // extract the receipt.
+    let receipt = prove_info.receipt;
+
+    // TODO: Implement code for retrieving receipt journal here.
+
+    // For example:
+    let _output: u32 = receipt.journal.decode().unwrap();
+
+    // The receipt was verified at the end of proving, but the below code is an
+    // example of how someone else could verify this receipt.
+    receipt
+        .verify(GUEST_NULLIFIER_TEST_ID)
+        .unwrap();
+}

risc0/poseidon_nullifier_test/methods/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "methods"
+version = "0.1.0"
+edition = "2021"
+
+[build-dependencies]
+risc0-build = { version = "^2.2.0" }
+
+[package.metadata.risc0]
+methods = ["guest"]

risc0/poseidon_nullifier_test/methods/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    risc0_build::embed_methods();
+}

risc0/poseidon_nullifier_test/methods/guest/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "guest_nullifier_test"
+version = "0.1.0"
+edition = "2021"
+
+[workspace]
+
+[dependencies]
+risc0-zkvm = { version = "^2.1.0", default-features = false, features = ['std'] }
+light-poseidon = "0.3.0"
+ark-bn254 = "0.5.0"

risc0/poseidon_nullifier_test/methods/guest/src/main.rs

@@ -0,0 +1,22 @@
+use risc0_zkvm::guest::env;
+use ark_bn254::Fr;
+use light_poseidon::PoseidonBytesHasher;
+
+fn main() {
+    // TODO: Implement your guest code here
+
+    // read the input
+    let input: u32 = env::read();
+
+    let s0 = String::from("test_string_0");
+    let s1 = String::from("test_string_1");
+
+    let test_bytes0 = s0.as_bytes();
+    let test_bytes1 = s1.as_bytes();
+
+    let mut poseidon = light_poseidon::Poseidon::<Fr>::new_circom(2).unwrap();
+
+    let _ = poseidon.hash_bytes_le(&[&test_bytes0, &test_bytes1]);
+    // write public output to the journal
+    env::commit(&input);
+}

risc0/poseidon_nullifier_test/methods/src/lib.rs

@@ -0,0 +1 @@
+include!(concat!(env!("OUT_DIR"), "/methods.rs"));

risc0/poseidon_nullifier_test/rust-toolchain.toml

@@ -0,0 +1,4 @@
+[toolchain]
+channel = "stable"
+components = ["rustfmt", "rust-src"]
+profile = "minimal"

risc0/poseidon_nullifier_test/test_proof.sh

@@ -0,0 +1 @@
+RISC0_DEV_MODE=0 RUST_LOG=info RISC0_INFO=1 cargo run --release

risc0/poseidon_nullifier_test/test_without_proof.sh

@@ -0,0 +1 @@
+RISC0_DEV_MODE=1 RUST_LOG=info RISC0_INFO=1 cargo run --release

risc0/sha_nullifier_test/.gitignore

@@ -0,0 +1,4 @@
+.DS_Store
+Cargo.lock
+methods/guest/Cargo.lock
+target/

risc0/sha_nullifier_test/Cargo.toml

@@ -0,0 +1,11 @@
+[workspace]
+resolver = "2"
+members = ["host", "methods"]
+
+# Always optimize; building and running the guest takes much longer without optimization.
+[profile.dev]
+opt-level = 3
+
+[profile.release]
+debug = 1
+lto = true

risc0/sha_nullifier_test/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

risc0/sha_nullifier_test/README.md

@@ -0,0 +1,12 @@
+Run test with proof generation:
+
+```sh
+./test_proof.sh
+```
+
+Run test without proof generation:
+
+```sh
+./test_without_proof.sh
+```
+

risc0/sha_nullifier_test/host/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "host"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+methods = { path = "../methods" }
+risc0-zkvm = { version = "^2.2.0" }
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+serde = "1.0"

risc0/sha_nullifier_test/host/src/main.rs

@@ -0,0 +1,56 @@
+// These constants represent the RISC-V ELF and the image ID generated by risc0-build.
+// The ELF is used for proving and the ID is used for verification.
+use methods::{
+    GUEST_NULLIFIER_TEST_ELF, GUEST_NULLIFIER_TEST_ID
+};
+use risc0_zkvm::{default_prover, ExecutorEnv};
+
+fn main() {
+    // Initialize tracing. In order to view logs, run `RUST_LOG=info cargo run`
+    tracing_subscriber::fmt()
+        .with_env_filter(tracing_subscriber::filter::EnvFilter::from_default_env())
+        .init();
+
+    // An executor environment describes the configurations for the zkVM
+    // including program inputs.
+    // A default ExecutorEnv can be created like so:
+    // `let env = ExecutorEnv::builder().build().unwrap();`
+    // However, this `env` does not have any inputs.
+    //
+    // To add guest input to the executor environment, use
+    // ExecutorEnvBuilder::write().
+    // To access this method, you'll need to use ExecutorEnv::builder(), which
+    // creates an ExecutorEnvBuilder. When you're done adding input, call
+    // ExecutorEnvBuilder::build().
+
+    // For example:
+    let input: u32 = 15 * u32::pow(2, 27) + 1;
+    let env = ExecutorEnv::builder()
+        .write(&input)
+        .unwrap()
+        .build()
+        .unwrap();
+
+    // Obtain the default prover.
+    let prover = default_prover();
+
+    // Proof information by proving the specified ELF binary.
+    // This struct contains the receipt along with statistics about execution of the guest
+    let prove_info = prover
+        .prove(env, GUEST_NULLIFIER_TEST_ELF)
+        .unwrap();
+
+    // extract the receipt.
+    let receipt = prove_info.receipt;
+
+    // TODO: Implement code for retrieving receipt journal here.
+
+    // For example:
+    let _output: u32 = receipt.journal.decode().unwrap();
+
+    // The receipt was verified at the end of proving, but the below code is an
+    // example of how someone else could verify this receipt.
+    receipt
+        .verify(GUEST_NULLIFIER_TEST_ID)
+        .unwrap();
+}

risc0/sha_nullifier_test/methods/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "methods"
+version = "0.1.0"
+edition = "2021"
+
+[build-dependencies]
+risc0-build = { version = "^2.2.0" }
+
+[package.metadata.risc0]
+methods = ["guest"]

risc0/sha_nullifier_test/methods/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    risc0_build::embed_methods();
+}

risc0/sha_nullifier_test/methods/guest/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "guest_nullifier_test"
+version = "0.1.0"
+edition = "2021"
+
+[workspace]
+
+[dependencies]
+risc0-zkvm = { version = "^2.1.0", default-features = false, features = ['std'] }
+sha2 = "=0.10.8"
+
+[patch.crates-io]
+sha2 = { git = "https://github.com/risc0/RustCrypto-hashes", tag = "sha2-v0.10.8-risczero.0" }

risc0/sha_nullifier_test/methods/guest/src/main.rs

@@ -0,0 +1,20 @@
+use risc0_zkvm::{
+    guest::env,
+    sha::{Impl, Sha256}
+};
+
+fn main() {
+    // TODO: Implement your guest code here
+
+    // read the input
+    let input: u32 = env::read();
+
+    let s0 = String::from("test_string_0 for nullifiers in NSSA");
+
+    let test_bytes0 = s0.as_bytes();
+ 
+    let _ = Impl::hash_bytes(test_bytes0);   
+  
+     // write public output to the journal
+    env::commit(&input);
+}

risc0/sha_nullifier_test/methods/src/lib.rs

@@ -0,0 +1 @@
+include!(concat!(env!("OUT_DIR"), "/methods.rs"));

risc0/sha_nullifier_test/rust-toolchain.toml

@@ -0,0 +1,4 @@
+[toolchain]
+channel = "stable"
+components = ["rustfmt", "rust-src"]
+profile = "minimal"

risc0/sha_nullifier_test/test_proof.sh

@@ -0,0 +1,2 @@
+cargo update -p sha2 --precise 0.10.8
+RISC0_DEV_MODE=0 RUST_LOG=info RISC0_INFO=1 cargo run --release

risc0/sha_nullifier_test/test_without_proof.sh

@@ -0,0 +1,2 @@
+cargo update -p sha2 --precise 0.10.8
+RISC0_DEV_MODE=1 RUST_LOG=info RISC0_INFO=1 cargo run --release