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KEYS: Implement PKCS#8 RSA Private Key parser [ver #2]

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Implement PKCS#8 RSA Private Key format [RFC 5208] parser for the
asymmetric key type.  For the moment, this will only support unencrypted
DER blobs.  PEM and decryption can be added later.

PKCS#8 keys can be loaded like this:

	openssl pkcs8 -in private_key.pem -topk8 -nocrypt -outform DER | \
	  keyctl padd asymmetric foo @s

Signed-off-by: David Howells <[email protected]>
Tested-by: Marcel Holtmann <[email protected]>
Reviewed-by: Marcel Holtmann <[email protected]>
Reviewed-by: Denis Kenzior <[email protected]>
Tested-by: Denis Kenzior <[email protected]>
Signed-off-by: James Morris <[email protected]>
This commit is contained in:
David Howells 2018-10-09 17:47:46 +01:00 • committed by James Morris
commit 3c58b2362b
5 changed files with 233 additions and 0 deletions
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2
Documentation/crypto/asymmetric-keys.txt
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@ -248,6 +248,8 @@ Examples of blob formats for which parsers could be implemented include:
- X.509 ASN.1 stream.
- Pointer to TPM key.
- Pointer to UEFI key.
- PKCS#8 private key [RFC 5208].
- PKCS#5 encrypted private key [RFC 2898].
During key instantiation each parser in the list is tried until one doesn't
return -EBADMSG.