1.8 KiB
ECC Signature Verification Comparison
This directory contains examples demonstrating ECC signature verification using both OpenSSL and wolfSSL libraries with the same test values.
Software Bill of Materials (SBOM)
| Component | Description | Version |
|---|---|---|
| OpenSSL | Cryptography and SSL/TLS Toolkit | 3.0.x |
| wolfSSL | Embedded SSL/TLS Library | 5.6.x |
| C Standard Library | Standard C library | - |
Examples
OpenSSL Low-level API Example
The ecc-verify-openssl-low.c example demonstrates how to verify an ECC signature using OpenSSL's low-level EC interfaces, specifically ECDSA_verify(). It uses:
- Fixed ECC public key (single encoded value in uncompressed format)
- Fixed signature (DER format)
- Fixed data (pre-computed hash)
wolfSSL Example
The ecc-verify-wolfssl.c example demonstrates how to verify the same ECC signature using wolfSSL's wc_ecc_verify_hash function. It uses the same fixed test values as the OpenSSL example.
Test Values
Both examples use the following fixed test values:
-
Public Key (uncompressed format):
042FBFB32C9E2890FD742D991FD43B889191791E18337AD408CB12CA79325E88DD7D20A5182318EC9BD696DDF41128D8BF1A137D2446C7A5AF6AA60AFEF3E8610E -
Signature (DER format):
30450220763B61459CF2FC3E821053702CC24C0E378C976FC6F83F0F0FF05BD85203B958022100A40A0A3AF50769EE740CBA8F9B5F4530F5E5A93EDEBBAB14A1F3BECE93FB5A47 -
Data (pre-computed hash):
E7BD43AEE750B0DA4B3F537E152C4A7407764037A57447CACD2096A5D60994BA
Building
make
This will build both examples.
Running
OpenSSL Example
./ecc-verify-openssl-low
wolfSSL Example
./ecc-verify-wolfssl
Expected Output
Both examples should output the test values and verification results, showing successful signature verification.