$ openssl speed rsa ecdsa sign verify sign/s verify/s rsa 1024 bits 0.000117s 0.000008s 8518.7 132449.2 rsa 2048 bits 0.000884s 0.000025s 1130.6 39499.3 sign verify sign/s verify/s 256 bits ecdsa (nistp256) 0.0000s 0.0001s 33210.9 11483.0 384 bits ecdsa (nistp384) 0.0009s 0.0008s 1070.6 1268.9