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Rust Verifier for SAG and LSAG Ring Signatures

This documentation provides an overview of the Rust crate used for verifying ring signatures generated by Alice's Ring library, supporting both SAG and LSAG schemes. It explains how to use the verifier, links to the existing documentation, and describes its integration with zero-knowledge (zk) proofs for verification on EVM chains.

Overview​

The Rust crate provides verification functionalities for two types of ring signatures:

  • SAG (Spontaneous Anonymous Group Signatures)
  • LSAG (Linkable Spontaneous Anonymous Group Signature)

Supported Verification Schemes​

  1. SAG Verification
    The crate enables verification of SAG signatures. For more details on how SAG verification works and its integration with this Rust verifier, please refer to the documentation: SAG Rust Verifier Documentation.

  2. LSAG Verification
    The verifier also supports LSAG signature verification. For more details on how LSAG verification works and its integration with this Rust verifier, please refer to the documentation: LSAG Rust Verifier Documentation.

Note:

Getting Started​

To use this Rust verifier for SAG or LSAG signatures, add it to your project as follows:

[dependencies]
ring_signature_verifier = "0.1.4"

Crate URL: crates.io/crates/ring_signature_verifier

Example Usage​

Here is a simple example showing how to verify an LSAG signature from a base64-encoded string:

use ring_signature_verifier::lsag_verifier::verify_b64_lsag;

fn main() {
    // Base64-encoded LSAG signature
    let b64_sig = "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".to_string();

    // Is signature valid? true
    println!("Is signature valid? {:?}", verify_b64_lsag(b64_sig));
}

See more examples in the SAG Rust Verifier Documentation and LSAG Rust Verifier Documentation.

Additional Resources​

For further details, please consult the linked documentation or contact the library maintainers.