Add SHA512

.gitignore

@@ -1,3 +1,4 @@
 target
 Cargo.lock
 .vscode
+.DS_Store

Cargo.toml

@@ -3,6 +3,7 @@ resolver = "2"
 members = [
     "crates/emulated",
     "crates/ed25519",
+    "crates/sha512",
 ]
 
 [workspace.package]

crates/sha512/Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "bellpepper-sha512"
+version = "0.2.0"
+edition = "2021"
+authors = ["Varun Thakore <[email protected]>"]
+description = "R1CS circuit for SHA-512 hash function"
+license = "MIT OR Apache-2.0"
+homepage.workspace = true
+repository.workspace = true
+
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+bellpepper-core = { workspace = true }
+bellpepper = { workspace = true }
+ff = { workspace = true }
+
+
+[dev-dependencies]
+blstrs = "0.7.0"
+rand = "0.8"
+hex-literal = "0.4.1"
+rand_core = "0.6.4"
+rand_xorshift = "0.3.0"
+sha2 = "0.10.6"

crates/sha512/LICENSE-APACHE

@@ -0,0 +1,201 @@
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+   Copyright 2023 Varun Thakore
+
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crates/sha512/LICENSE-MIT

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 Varun Thakore
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

crates/sha512/README.md

@@ -0,0 +1,24 @@
+# bellpepper-SHA512
+
+This library contains circuit for SHA-512 hash function and circuit representation of u64, created using [bellpepper](https://github.com/lurk-lab/bellpepper).
+
+## References
+1. [Bellman implementation of SHA256](https://github.com/zkcrypto/bellman/blob/main/src/gadgets/sha256.rs)
+2. [FIPS 180-4 : SHA-512](https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf)
+
+## License
+
+Licensed under either of
+
+ * Apache License, Version 2.0
+   ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license
+   ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+## Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.

crates/sha512/src/lib.rs

@@ -0,0 +1,2 @@
+pub mod sha512;
+pub mod uint64;