在 Ruby 中，我有创建 RSA 公钥或私钥的简单旧源代码行：
OpenSSL::PKey::RSA.new(File.read(key_file))
我的 RSA 公钥和私钥格式如下，我对 MRI 和 Jruby 使用完全相同的密钥文件：
-----BEGIN RSA PRIVATE KEY-----
MIIEvwIBADANBgkq...
-----END RSA PRIVATE KEY-----
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqh...
-----END PUBLIC KEY-----
当我在 MRI v2.4.0 上运行它时——任何问题，我都可以实例化公钥和私钥：
$> irb
> k = OpenSSL::PKey::RSA.new(File.read("private.pem"))
=> #<OpenSSL::PKey::RSA:0x007fda1096a6a8>
> k = OpenSSL::PKey::RSA.new(File.read("public.pem"))
=> #<OpenSSL::PKey::RSA:0x007fda1096a6a8>
但是使用 Jruby 9.0.4.0 和 9.1.8.0 我可以成功启动公共但在初始化私钥上失败：
> set JRUBY_OPTS=-J-Djruby.openssl.debug=true
> irb
irb(main):001:0> require "openssl"
using provider: BC version 1.56
irb(main):002:0> k = OpenSSL::PKey::RSA.new(File.read("public.pem"))
=> #<OpenSSL::PKey::RSA:0x1c9e76b>
但未能创建私钥对象：
irb(main):003:0> k = OpenSSL::PKey::RSA.new(File.read("private.pem"))
java.io.IOException: problem creating RSA private key: java.lang.ClassCastException: org.bouncycastle.asn1.DLSequence cannot be ca
st to org.bouncycastle.asn1.ASN1Integer
at org.jruby.ext.openssl.x509store.PEMInputOutput.mapReadException(PEMInputOutput.java:383)
at org.jruby.ext.openssl.x509store.PEMInputOutput.readPrivateKey(PEMInputOutput.java:328)
at org.jruby.ext.openssl.PKey.readPrivateKey(PKey.java:395)
at org.jruby.ext.openssl.PKeyRSA.initialize(PKeyRSA.java:260)
at org.jruby.ext.openssl.PKeyRSA$INVOKER$i$0$0$initialize.call(PKeyRSA$INVOKER$i$0$0$initialize.gen)
at org.jruby.internal.runtime.methods.JavaMethod$JavaMethodN.call(JavaMethod.java:720)
at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:171)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:177)
at org.jruby.RubyClass.newInstance(RubyClass.java:1001)
at org.jruby.RubyClass$INVOKER$i$newInstance.call(RubyClass$INVOKER$i$newInstance.gen)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:200)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:314)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.Interpreter.INTERPRET_EVAL(Interpreter.java:122)
at org.jruby.ir.interpreter.Interpreter.evalCommon(Interpreter.java:176)
at org.jruby.ir.interpreter.Interpreter.evalWithBinding(Interpreter.java:200)
at org.jruby.RubyKernel.evalCommon(RubyKernel.java:1033)
at org.jruby.RubyKernel.eval19(RubyKernel.java:1000)
at org.jruby.RubyKernel$INVOKER$s$0$3$eval19.call(RubyKernel$INVOKER$s$0$3$eval19.gen)
at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:77)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:83)
at org.jruby.ir.instructions.CallBase.interpret(CallBase.java:428)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:355)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:109)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:95)
at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:77)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:83)
at org.jruby.ir.instructions.CallBase.interpret(CallBase.java:428)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:355)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:89)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:214)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:200)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:208)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:193)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:323)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.Interpreter.INTERPRET_BLOCK(Interpreter.java:132)
at org.jruby.runtime.MixedModeIRBlockBody.commonYieldPath(MixedModeIRBlockBody.java:148)
at org.jruby.runtime.IRBlockBody.yieldSpecific(IRBlockBody.java:80)
at org.jruby.runtime.Block.yieldSpecific(Block.java:136)
at org.jruby.ir.runtime.IRRuntimeHelpers.yieldSpecific(IRRuntimeHelpers.java:450)
at org.jruby.ir.instructions.YieldInstr.interpret(YieldInstr.java:74)
at org.jruby.ir.interpreter.StartupInterpreterEngine.processOtherOp(StartupInterpreterEngine.java:187)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:111)
at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:83)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:179)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:165)
at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:171)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:177)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:332)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.Interpreter.INTERPRET_BLOCK(Interpreter.java:132)
at org.jruby.runtime.MixedModeIRBlockBody.commonYieldPath(MixedModeIRBlockBody.java:148)
at org.jruby.runtime.IRBlockBody.doYield(IRBlockBody.java:189)
at org.jruby.runtime.BlockBody.yield(BlockBody.java:120)
at org.jruby.runtime.Block.yieldValues(Block.java:183)
at org.jruby.ir.instructions.YieldInstr.interpret(YieldInstr.java:80)
at org.jruby.ir.interpreter.StartupInterpreterEngine.processOtherOp(StartupInterpreterEngine.java:187)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:111)
at org.jruby.ir.interpreter.Interpreter.INTERPRET_BLOCK(Interpreter.java:132)
at org.jruby.runtime.MixedModeIRBlockBody.commonYieldPath(MixedModeIRBlockBody.java:148)
at org.jruby.runtime.IRBlockBody.yieldSpecific(IRBlockBody.java:80)
at org.jruby.runtime.Block.yieldSpecific(Block.java:136)
at org.jruby.RubyKernel.loop(RubyKernel.java:1298)
at org.jruby.RubyKernel$INVOKER$s$0$0$loop.call(RubyKernel$INVOKER$s$0$0$loop.gen)
at org.jruby.internal.runtime.methods.JavaMethod$JavaMethodZeroBlock.call(JavaMethod.java:497)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:298)
at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:79)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:83)
at org.jruby.ir.instructions.CallBase.interpret(CallBase.java:428)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:355)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.Interpreter.INTERPRET_BLOCK(Interpreter.java:132)
at org.jruby.runtime.MixedModeIRBlockBody.commonYieldPath(MixedModeIRBlockBody.java:148)
at org.jruby.runtime.IRBlockBody.doYield(IRBlockBody.java:182)
at org.jruby.runtime.BlockBody.yield(BlockBody.java:111)
at org.jruby.runtime.Block.yield(Block.java:167)
at org.jruby.RubyContinuation.enter(RubyContinuation.java:107)
at org.jruby.RubyKernel.rbCatch19Common(RubyKernel.java:1127)
at org.jruby.RubyKernel.rbCatch19(RubyKernel.java:1120)
at org.jruby.RubyKernel$INVOKER$s$rbCatch19.call(RubyKernel$INVOKER$s$rbCatch19.gen)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:348)
at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:173)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:177)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:332)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:109)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:95)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:298)
at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:79)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:83)
at org.jruby.ir.instructions.CallBase.interpret(CallBase.java:428)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:355)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:77)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:144)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:130)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:192)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:318)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:131)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:339)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.Interpreter.INTERPRET_BLOCK(Interpreter.java:132)
at org.jruby.runtime.MixedModeIRBlockBody.commonYieldPath(MixedModeIRBlockBody.java:148)
at org.jruby.runtime.IRBlockBody.doYield(IRBlockBody.java:182)
at org.jruby.runtime.BlockBody.yield(BlockBody.java:111)
at org.jruby.runtime.Block.yield(Block.java:167)
at org.jruby.RubyContinuation.enter(RubyContinuation.java:107)
at org.jruby.RubyKernel.rbCatch19Common(RubyKernel.java:1127)
at org.jruby.RubyKernel.rbCatch19(RubyKernel.java:1120)
at org.jruby.RubyKernel$INVOKER$s$rbCatch19.call(RubyKernel$INVOKER$s$rbCatch19.gen)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:348)
at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:173)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:177)
at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:332)
at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)
at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:83)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:179)
at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:165)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:200)
at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)
at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)
at C_3a_.jruby_minus_9_dot_1_dot_8_dot_0.bin.jirb.invokeOther13:start(C:/jruby-9.1.8.0/bin/jirb:13)
at C_3a_.jruby_minus_9_dot_1_dot_8_dot_0.bin.jirb.RUBY$script(C:/jruby-9.1.8.0/bin/jirb:13)
at java.lang.invoke.MethodHandle.invokeWithArguments(Unknown Source)
at org.jruby.ir.Compiler$1.load(Compiler.java:95)
at org.jruby.Ruby.runScript(Ruby.java:827)
at org.jruby.Ruby.runNormally(Ruby.java:746)
at org.jruby.Ruby.runNormally(Ruby.java:764)
at org.jruby.Ruby.runFromMain(Ruby.java:577)
at org.jruby.Main.doRunFromMain(Main.java:417)
at org.jruby.Main.internalRun(Main.java:305)
at org.jruby.Main.run(Main.java:232)
at org.jruby.Main.main(Main.java:204)
Caused by: java.lang.ClassCastException: org.bouncycastle.asn1.DLSequence cannot be cast to org.bouncycastle.asn1.ASN1Integer
at org.jruby.ext.openssl.impl.PKey.readPrivateKey(PKey.java:88)
at org.jruby.ext.openssl.x509store.PEMInputOutput.readKeyPair(PEMInputOutput.java:1242)
at org.jruby.ext.openssl.x509store.PEMInputOutput.readPrivateKey(PEMInputOutput.java:325)
... 136 more
PKeyRSA could not read private key java.io.IOException: unknown tag 13 encountered
PKeyRSA could not read public key java.io.IOException: unknown tag 13 encountered
PKeyRSA could not generate (PKCS8) private key org.bouncycastle.jcajce.provider.asymmetric.util.ExtendedInvalidKeySpecException: u
nable to process key spec: java.lang.IllegalArgumentException: failed to construct sequence from byte[]: unknown tag 13 encountere
d
PKeyRSA could not generate (X509) public key java.security.spec.InvalidKeySpecException: encoded key spec not recognized: failed t
o construct sequence from byte[]: unknown tag 13 encountered
OpenSSL::PKey::RSAError: Neither PUB key nor PRIV key:
from org/jruby/ext/openssl/PKeyRSA.java:309:in `initialize'
from (irb):3:in `<eval>'
from org/jruby/RubyKernel.java:1000:in `eval'
from org/jruby/RubyKernel.java:1298:in `loop'
from org/jruby/RubyKernel.java:1120:in `catch'
from org/jruby/RubyKernel.java:1120:in `catch'
然后我尝试使用私钥，我已经从 PEM 文件中删除了 -----BEGIN RSA PRIVATE KEY----- 和 -----END RSA PRIVATE KEY-----，之后我能够在 Jruby 上执行此操作：
irb(main):005:0> require "base64"
=> true
irb(main):006:0> k = OpenSSL::PKey::RSA.new(Base64.decode64(File.read("private.pem")))
=> #<OpenSSL::PKey::RSA:0x1cff11c>
irb(main):007:0> k.private?
=> true
有什么方法可以让 Jruby OpenSSL 自动检测 PEM 文件格式并加载 Base64 私钥？这是令人沮丧的 Base64 格式的公钥成功打开，私钥没有。