Encrypted PKCS8 RSA key From the GnuTLS test suite

https://gitorious.org/gnutls/gnutls/source/f8d943b38bf74eaaa11d396112daf43cb8aa82ae:tests/pkcs8-decode/encpkcs8.pem

Password is "foobar"
Unencrypted RSA private key from GnuTLS tests

https://gitorious.org/gnutls/gnutls/source/f8d943b38bf74eaaa11d396112daf43cb8aa82ae:tests/pkcs8-decode/unencpkcs8.pem

There is no password.
Encrypted RSA private key from GnuTLS tests

https://gitorious.org/gnutls/gnutls/source/f8d943b38bf74eaaa11d396112daf43cb8aa82ae:tests/pkcs8-decode/enc2pkcs8.pem

Password is "baz"
Private keys from GnuTLS tests/pkcs12_s2k_pem.c

https://gitorious.org/gnutls/gnutls/source/f8d943b38bf74eaaa11d396112daf43cb8aa82ae:tests/pkcs12_s2k_pem.c

Part of a regression test in GnuTLS for a PKCS#12 parsing bug
http://thread.gmane.org/gmane.network.gnutls.general/1663

Password is "123456" for all of them.
Unencrypted PKCS8 ECC private keys from Botan

https://github.com/randombit/botan/tree/4917f26a2b154e841cd27c1bcecdd41d2bdeb6ce/src/tests/data/ecc
Document PKCS #8 key sources
Merge pull request #667 from public/pkcs8-test-keys

PKCS#8 test keys