ECC Accelerator by Xiphera is a high-speed Intellectual Property (IP) core for Elliptic Curve Diffie-Hellman (ECDH) and Elliptic Curve Digital Signature Algorithm (ECDSA) on NIST prime curves. ECC Accelerator achieves over a thousand operations per second in modern FPGA or ASIC. It covers all NIST P curves with a single IP core instance and allows user-specified elliptic curves. The IP core is designed for easy integration with FPGA- and ASIC-based designs in a vendor-agnostic methodology, without relying on FPGA manufacturer-specific features.