Password protected RSA keys and PKI package

Hi everyone,
I'm trying to use RSA public keys protected by a password, seems the latest PKI package allows to do this, but I'm encountering strange issues.
Simple unencrypted RSA keys work ok:

% package require pki
0.3
% set key [ ::pki::pkcs::parse_key [ ::fileutil::cat normal.key ] ]
l 1024 d 896...<skipped>...217 e 65537 type rsa n 140...<skipped>...431

normal.key is just a simple base64-encoded public key:
-----BEGIN RSA PRIVATE KEY-----
MII...<skipped>...Ioc=
-----END RSA PRIVATE KEY-----

Now I try to protect it with a password:
% openssl rsa -in normal.key -out encrypted.key -des3
writing RSA key
Enter PEM pass phrase: password
Verifying - Enter PEM pass phrase: password

This is how the encrypted key looks like:
-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,553FB844B17CCBBC

p3e...<skipped>...w==
-----END RSA PRIVATE KEY-----

And when I try to parse it I get the following:
% set key [ ::pki::pkcs::parse_key [ ::fileutil::cat encrypted.key ] ] password
can't read "parsed_key(data)": no such element in array

Am I missing something?

--
Best regards, Eugene.
.

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