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pkcs11: Search for private keys in a more generic way.

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Also, don't extract the public key directly from the private key. Some
tokens actually do not return the public exponent (it's not required).
We have to find a different way to get the public key.
This commit is contained in:
Tobias Brunner
2011-11-02 20:27:55 +01:00
parent 9e3b1e1495
commit 5d2fccf439
1 changed files with 19 additions and 20 deletions
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src/libstrongswan/plugins/pkcs11/pkcs11_private_key.c
+19 -20
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@@ -74,12 +74,17 @@ struct private_pkcs11_private_key_t {
* References to this key
*/
refcount_t ref;
/**
* Type of this private key
*/
key_type_t type;
};
METHOD(private_key_t, get_type, key_type_t,
private_pkcs11_private_key_t *this)
{
return this->pubkey->get_type(this->pubkey);
return this->type;
}
METHOD(private_key_t, get_keysize, int,
@@ -422,13 +427,11 @@ static bool find_key(private_pkcs11_private_key_t *this, chunk_t keyid)
CK_BBOOL reauth = FALSE;
CK_ATTRIBUTE attr[] = {
{CKA_KEY_TYPE, &type, sizeof(type)},
{CKA_MODULUS, NULL, 0},
{CKA_PUBLIC_EXPONENT, NULL, 0},
{CKA_ALWAYS_AUTHENTICATE, &reauth, sizeof(reauth)},
};
enumerator_t *enumerator;
chunk_t modulus, pubexp;
int count = countof(attr);
bool found = FALSE;
/* do not use CKA_ALWAYS_AUTHENTICATE if not supported */
if (!(this->lib->get_features(this->lib) & PKCS11_ALWAYS_AUTH_KEYS))
@@ -439,26 +442,16 @@ static bool find_key(private_pkcs11_private_key_t *this, chunk_t keyid)
this->session, tmpl, countof(tmpl), attr, count);
if (enumerator->enumerate(enumerator, &object))
{
this->type = KEY_RSA;
switch (type)
{
case CKK_ECDSA:
this->type = KEY_ECDSA;
/* fall-through */
case CKK_RSA:
if (attr[1].ulValueLen == -1 || attr[2].ulValueLen == -1)
{
DBG1(DBG_CFG, "reading modulus/exponent from PKCS#1 failed");
break;
}
modulus = chunk_create(attr[1].pValue, attr[1].ulValueLen);
pubexp = chunk_create(attr[2].pValue, attr[2].ulValueLen);
this->pubkey = lib->creds->create(lib->creds, CRED_PUBLIC_KEY,
KEY_RSA, BUILD_RSA_MODULUS, modulus,
BUILD_RSA_PUB_EXP, pubexp, BUILD_END);
if (!this->pubkey)
{
DBG1(DBG_CFG, "extracting public key from PKCS#11 RSA "
"private key failed");
}
this->reauth = reauth;
this->object = object;
found = TRUE;
break;
default:
DBG1(DBG_CFG, "PKCS#11 key type %d not supported", type);
@@ -466,7 +459,7 @@ static bool find_key(private_pkcs11_private_key_t *this, chunk_t keyid)
}
}
enumerator->destroy(enumerator);
return this->pubkey != NULL;
return found;
}
/**
@@ -620,5 +613,11 @@ pkcs11_private_key_t *pkcs11_private_key_connect(key_type_t type, va_list args)
return NULL;
}
if (!this->pubkey)
{
destroy(this);
return NULL;
}
return &this->public;
}