如何将PEM编码的Elliptic Curve公钥加载到Bouncy Castle中？

我有一个PEM编码的Elliptic Curve公钥,我正试图加载到Bouncy Castle中,到目前为止我尝试的所有内容都失败了.这是我正在尝试加载的密钥的示例：

@H_502_6@-----BEGIN PUBLIC KEY-----
MIGbMBAGByqGSM49AgEGBSuBBAAjA4GGAAQBhsFCcWY2GaiN1BjPEd1v+ESKO6/0
D0sUR4y1amHnOr3FZx6TdqdoSBqxownQrnAKGCwagGxUb7BWwPFgHqKQJHgBq+J7
F+6m5SKAEL1wS5pqya91N7oudF3yFW8oZRE4RQRdSLl3fV2aVXKwGDXciwhUhw8k
x5OS4iZpMAY+LI4WVGU=
-----END PUBLIC KEY-----

它由NodeJS Crypto模块生成,曲线名称为secp521r1.它后来被npm package key-encoder编码到PEM中.我已经在JavaScript(实际上是ClojureScript)中使用它来验证签名,现在我需要用Java验证服务器上的签名(实际上是Clojure).

我尝试从密钥中删除警卫,转换为byte []并创建X509EncodedKeySpec.那没用.它崩溃了：

@H_502_6@InvalidKeySpecException encoded key spec not recognised  org.bouncycastle.jcajce.provider.asymmetric.util.BaseKeyFactorySpi.engineGeneratePublic (:-1)

我用来加载密钥的代码：

@H_502_6@KeyFactory.
  getInstance("ECDSA","BC").
  generatePublic(new X509EncodedKeySpec(publicKey.getBytes()))

以防万一,这是我的Clojure代码：

@H_502_6@(-> (KeyFactory/getInstance "ECDSA")
    (.generatePublic (X509EncodedKeySpec. (.getBytes public-key))))

我也尝试过PKCS8EncodedKeySpec,但是我得到了错误：

@H_502_6@InvalidKeySpecException key spec not recognised  org.bouncycastle.jcajce.provider.asymmetric.util.BaseKeyFactorySpi.engineGeneratePublic (:-1)

我也在这里试过这个方法：https://gist.github.com/wuyongzheng/0e2ed6d8a075153efcd3#file-ecdh_bc-java-L47-L50但是当运行decodePoint时我收到错误：

@H_502_6@IllegalArgumentException Invalid point encoding 0x4d  org.bouncycastle.math.ec.ECCurve.decodePoint (:-1)

当我取下卫兵时：

@H_502_6@IllegalArgumentException Invalid point encoding 0x2d  org.bouncycastle.math.ec.ECCurve.decodePoint (:-1)

随着守卫.

我有什么想法或者如何修复它？

此外,如果有帮助,这是私钥：

@H_502_6@-----BEGIN EC PRIVATE KEY-----
MIHbAgEBBEEjNeo52qeffbIQvSxRcWAPlyJjeEOov2JNxxwWKCtlowi07HsYNNyE
jFDdSn8tSYAGx0rROrgpGuuJoG0zarPKz6AHBgUrgQQAI6GBiQOBhgAEAYbBQnFm
NhmojdQYzxHdb/hEijuv9A9LFEeMtWph5zq9xWcek3anaEgasaMJ0K5wChgsGoBs
VG+wVsDxYB6ikCR4AaviexfupuUigBC9cEuaasmvdTe6LnRd8hVvKGUROEUEXUi5
d31dmlVysBg13IsIVIcPJMeTkuImaTAGPiyOFlRl
-----END EC PRIVATE KEY-----

一切似乎都是有效的：

@H_502_6@$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-----

最佳答案

做一些按摩我终于设法加载它：

@H_502_6@(require '[clojure.string :as s])
(import '[java.security KeyFactory]
        '[java.security.spec X509EncodedKeySpec]
        '[java.util Base64])

(def public-key "-----BEGIN PUBLIC KEY-----
MIGbMBAGByqGSM49AgEGBSuBBAAjA4GGAAQBhsFCcWY2GaiN1BjPEd1v+ESKO6/0
D0sUR4y1amHnOr3FZx6TdqdoSBqxownQrnAKGCwagGxUb7BWwPFgHqKQJHgBq+J7
F+6m5SKAEL1wS5pqya91N7oudF3yFW8oZRE4RQRdSLl3fV2aVXKwGDXciwhUhw8k
x5OS4iZpMAY+LI4WVGU=
-----END PUBLIC KEY-----")

(as-> public-key key
      (s/replace key "-----BEGIN PUBLIC KEY-----" "")
      (s/replace key "-----END PUBLIC KEY-----" "")
      (s/replace key #"\s" "")
      (.decode (Base64/getDecoder) key)
      (X509EncodedKeySpec. key)
      (.generatePublic (KeyFactory/getInstance "ECDSA" "BC") key))

原文链接：https://www.f2er.com/java/437352.html

如何将PEM编码的Elliptic Curve公钥加载到Bouncy Castle中？

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