decodePoint 函数输出中的 PublicKeySizeInvalid 错误

Question

我正在 GHCI 中尝试这个功能，

import Data.ByteString.Char8
import Crypto.PubKey.ECIES 
import Crypto.ECC
import Data.Proxy

curve = Proxy :: Proxy Curve_X448

str = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
seed = Data.ByteString.Char8.pack str
d =  decodePoint curve seed
d

但是报错CryptoFailed CryptoError_PublicKeySizeInvalid，str的大小应该是多少？

Answer 1

对于X448曲线，顾名思义，密钥大小应该是448位，即56字节：

-- import ...

curve = Proxy :: Proxy Curve_X448

seed = Data.ByteString.Char8.replicate 56 'a'
d = decodePoint curve seed
d

打印出来：

CryptoPassed (PublicKey "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")

decodePoint 函数输出中的 PublicKeySizeInvalid 错误

PublicKeySizeInvalid error in decodePoint function output

haskell

cryptography

elliptic-curve