With the extensive application of public key cryptography in information security, the flexibility of public key cryptography processor becomes more and more important. As its kernel computing unit, the performance of modular multiplier in Galois field is essential. 随着公钥密码在信息安全领域的广泛应用,对公钥密码处理器灵活性的要求越来越高,作为其核心的运算单元,大位宽有限域乘法运算单元的性能至关重要。