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authorDavid Howells <dhowells@redhat.com>2018-10-09 17:47:31 +0100
committerJames Morris <james.morris@microsoft.com>2018-10-26 09:30:46 +0100
commitf7c4e06e066c3df282e6e3d4e7d8c498be9e1e46 (patch)
treeb4fbeca37cf7dc4188fb459b9934b8ce386cf7d4 /crypto/asymmetric_keys/public_key.c
parent82f94f24475c89c6d5cb673e1277b5b4394499c8 (diff)
downloadlinux-stericsson-f7c4e06e066c3df282e6e3d4e7d8c498be9e1e46.tar.gz
KEYS: Allow the public_key struct to hold a private key [ver #2]
Put a flag in the public_key struct to indicate if the structure is holding a private key. The private key must be held ASN.1 encoded in the format specified in RFC 3447 A.1.2. This is the form required by crypto/rsa.c. The software encryption subtype's verification and query functions then need to select the appropriate crypto function to set the key. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Marcel Holtmann <marcel@holtmann.org> Reviewed-by: Marcel Holtmann <marcel@holtmann.org> Reviewed-by: Denis Kenzior <denkenz@gmail.com> Tested-by: Denis Kenzior <denkenz@gmail.com> Signed-off-by: James Morris <james.morris@microsoft.com>
Diffstat (limited to 'crypto/asymmetric_keys/public_key.c')
-rw-r--r--crypto/asymmetric_keys/public_key.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/crypto/asymmetric_keys/public_key.c b/crypto/asymmetric_keys/public_key.c
index 761bfab352dc..f2dc27897319 100644
--- a/crypto/asymmetric_keys/public_key.c
+++ b/crypto/asymmetric_keys/public_key.c
@@ -115,7 +115,12 @@ static int software_key_query(const struct kernel_pkey_params *params,
if (IS_ERR(tfm))
return PTR_ERR(tfm);
- ret = crypto_akcipher_set_pub_key(tfm, pkey->key, pkey->keylen);
+ if (pkey->key_is_private)
+ ret = crypto_akcipher_set_priv_key(tfm,
+ pkey->key, pkey->keylen);
+ else
+ ret = crypto_akcipher_set_pub_key(tfm,
+ pkey->key, pkey->keylen);
if (ret < 0)
goto error_free_tfm;
@@ -170,7 +175,12 @@ int public_key_verify_signature(const struct public_key *pkey,
if (!req)
goto error_free_tfm;
- ret = crypto_akcipher_set_pub_key(tfm, pkey->key, pkey->keylen);
+ if (pkey->key_is_private)
+ ret = crypto_akcipher_set_priv_key(tfm,
+ pkey->key, pkey->keylen);
+ else
+ ret = crypto_akcipher_set_pub_key(tfm,
+ pkey->key, pkey->keylen);
if (ret)
goto error_free_req;