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How many bits of rsa are equivalent to 256-bit ecc?
This ECC key is equivalent to a 3072-bit RSA key.

In other words, to achieve the same security, ECC only needs a shorter key.

The advantage of ECC is that it can provide higher security while reducing the amount of calculation, storage space and bandwidth consumption. This is very beneficial for resource-constrained scenarios such as mobile devices and the Internet of Things. ECC is also one of the national secret algorithms, which has been widely used in SSL certificates, electronic signatures, digital currency and other fields.