Daniel Hammer created SSHD-1297:
-----------------------------------
Summary: Load public key from file
Key: SSHD-1297
URL: https://issues.apache.org/jira/browse/SSHD-1297
Project: MINA SSHD
Issue Type: Bug
Affects Versions: 2.9.1
Reporter: Daniel Hammer
Hi SSHD gurus,
I'm attempting to utilize
{{org.apache.sshd.common.util.buffer.ByteArrayBuffer}} to load a
{{java.security.PublicKey}} in-order to subsequently register the public key in
a {{{}org.apache.sshd.server.auth.pubkey.PublickeyAuthenticator{}}}.
Ie. the idea is something like this
{code:java}
PublicKey myPublicKey;
try (InputStream is = new
FileInputStream("/home/my-user/tmp/test_rsa_key.pub")) {
ByteArrayBuffer buffer = new
ByteArrayBuffer(org.apache.sshd.common.util.io.IoUtils.IoUtils.toByteArray(is));
myPublicKey = buffer.getPublicKey(); // -> OutOfMemoryError: Java heap space
..?
// myPublicKey = buffer.getRawPublicKey(); // -> Underflow ..?
}
ServerBuilder.builder()
.publickeyAuthenticator(new KeySetPublickeyAuthenticator("my id",
List.of(myPublicKey)))
.build();
{code}
Resulting in the below exceptions, caused by internal guarding in
{{ByteArrayBuffer}} before the {{ByteArrayBuffer.data}} would be processed.
{{{}getPublicKey(){}}}:
{code:java}
java.lang.OutOfMemoryError: Java heap space
at
org.apache.sshd.common.util.buffer.ByteArrayBuffer.ensureCapacity(ByteArrayBuffer.java:277)
at
org.apache.sshd.common.util.buffer.Buffer.ensureCapacity(Buffer.java:1105)
at
org.apache.sshd.common.util.buffer.ByteArrayBuffer.wpos(ByteArrayBuffer.java:139)
at
org.apache.sshd.common.util.buffer.Buffer.getPublicKey(Buffer.java:521)
at
org.apache.sshd.common.util.buffer.Buffer.getPublicKey(Buffer.java:505)
{code}
{{{}getRawPublicKey(){}}}:
{code:java}
org.apache.sshd.common.util.buffer.BufferException: Underflow:
requested=1936943149, available=737
at
app//org.apache.sshd.common.util.buffer.Buffer.ensureAvailable(Buffer.java:640)
at
app//org.apache.sshd.common.util.buffer.ByteArrayBuffer.getString(ByteArrayBuffer.java:241)
at
app//org.apache.sshd.common.util.buffer.Buffer.getString(Buffer.java:309)
at
app//org.apache.sshd.common.util.buffer.Buffer.getRawPublicKey(Buffer.java:541)
at
app//org.apache.sshd.common.util.buffer.Buffer.getRawPublicKey(Buffer.java:530)
{code}
Seemingly my approach is incompatible with the available logic, unfortunately
I've been unable to uncover documentation or Javadoc that could aid.
So as a last resort I'm turning to you gurus, in hopes of enlightenment (+
perhaps a PR guiding future developers in the desired direction via
documentation / Javadoc).
Thanks in advance 🙏
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