我有一个PEM编码的椭圆曲线公钥,我试图加载到Bouncy Castle,到目前为止我尝试的所有东西都失败了。这是关键,我想负载的例子:如何将PEM编码的椭圆曲线公钥加载到Bouncy Castle?
-----BEGIN PUBLIC KEY-----
MIGbMBAGByqGSM49AgEGBSuBBAAjA4GGAAQBhsFCcWY2GaiN1BjPEd1v+ESKO6/0
D0sUR4y1amHnOr3FZx6TdqdoSBqxownQrnAKGCwagGxUb7BWwPFgHqKQJHgBq+J7
F+6m5SKAEL1wS5pqya91N7oudF3yFW8oZRE4RQRdSLl3fV2aVXKwGDXciwhUhw8k
x5OS4iZpMAY+LI4WVGU=
-----END PUBLIC KEY-----
它由NodeJS Crypto模块产生和曲线的名字是secp521r1。它后来被npm package key-encoder编码到PEM中。我已经在JavaScript中使用它(实际上是ClojureScript)来验证签名,现在我需要使用Java验证服务器上的签名(实际上是Clojure)。
我试着从密钥中删除守卫,转换为byte []并创建一个X509EncodedKeySpec。这没有用。它开车撞:
InvalidKeySpecException encoded key spec not recognised org.bouncycastle.jcajce.provider.asymmetric.util.BaseKeyFactorySpi.engineGeneratePublic (:-1)
到我使用加载密钥代码:
KeyFactory.
getInstance("ECDSA", "BC").
generatePublic(new X509EncodedKeySpec(publicKey.getBytes()))
以防万一,这是我的Clojure代码:
(-> (KeyFactory/getInstance "ECDSA")
(.generatePublic (X509EncodedKeySpec. (.getBytes public-key))))
我也尝试过PKCS8EncodedKeySpec但我得到了错误:
InvalidKeySpecException key spec not recognised org.bouncycastle.jcajce.provider.asymmetric.util.BaseKeyFactorySpi.engineGeneratePublic (:-1)
这里我也试过这个方法:https://gist.github.com/wuyongzheng/0e2ed6d8a075153efcd3#file-ecdh_bc-java-L47-L50但运行decodePoint当我得到的错误:
IllegalArgumentException Invalid point encoding 0x4d org.bouncycastle.math.ec.ECCurve.decodePoint (:-1)
当我删除了警卫和:
IllegalArgumentException Invalid point encoding 0x2d org.bouncycastle.math.ec.ECCurve.decodePoint (:-1)
与卫兵。
任何想法我做错了或如何解决它?
此外,如果有帮助,这是私钥:
-----BEGIN EC PRIVATE KEY-----
MIHbAgEBBEEjNeo52qeffbIQvSxRcWAPlyJjeEOov2JNxxwWKCtlowi07HsYNNyE
jFDdSn8tSYAGx0rROrgpGuuJoG0zarPKz6AHBgUrgQQAI6GBiQOBhgAEAYbBQnFm
NhmojdQYzxHdb/hEijuv9A9LFEeMtWph5zq9xWcek3anaEgasaMJ0K5wChgsGoBs
VG+wVsDxYB6ikCR4AaviexfupuUigBC9cEuaasmvdTe6LnRd8hVvKGUROEUEXUi5
d31dmlVysBg13IsIVIcPJMeTkuImaTAGPiyOFlRl
-----END EC PRIVATE KEY-----
,一切似乎是有效的:
$ openssl ec -in private.pem -pubout
read EC key
writing EC key
-----BEGIN PUBLIC KEY-----
MIGbMBAGByqGSM49AgEGBSuBBAAjA4GGAAQBhsFCcWY2GaiN1BjPEd1v+ESKO6/0
D0sUR4y1amHnOr3FZx6TdqdoSBqxownQrnAKGCwagGxUb7BWwPFgHqKQJHgBq+J7
F+6m5SKAEL1wS5pqya91N7oudF3yFW8oZRE4RQRdSLl3fV2aVXKwGDXciwhUhw8k
x5OS4iZpMAY+LI4WVGU=
-----END PUBLIC KEY-----