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strongswan
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Used Openssl RSA_verify function

This commit is contained in:
Sansar Choinyambuu 2011-10-21 13:50:28 +02:00 committed by Andreas Steffen
parent 72684a710b
commit 52ae3f27f8
2 changed files with 63 additions and 9 deletions
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5
src/libimcv/plugins/imv_attestation/imv_attestation_process.c
View File

@ -312,8 +312,7 @@ bool imv_attestation_process(pa_tnc_attr_t *attr, linked_list_t *attr_list,
hasher->allocate_hash(hasher, quote_info, &quote_digest);
hasher->destroy(hasher);
if (!chunk_equals(pcr_comp, chunk_empty)
&& strncmp(quote_info.ptr, pcr_comp.ptr,
if (pcr_comp.ptr && strncmp(quote_info.ptr, pcr_comp.ptr,
quote_info.len - ASSESSMENT_SECRET_LEN) != 0)
{
DBG1(DBG_IMV, "calculated TPM Quote Info differs from received");
@ -325,7 +324,7 @@ bool imv_attestation_process(pa_tnc_attr_t *attr, linked_list_t *attr_list,
}
DBG2(DBG_IMV, "received TPM Quote Info matches with calculated");
if (!chunk_equals(tpm_quote_sign, chunk_empty) &&
if (tpm_quote_sign.ptr &&
!pts->verify_quote_signature(pts, quote_digest, tpm_quote_sign))
{
free(quote_digest.ptr);

67
src/libpts/pts/pts.c
View File

@ -29,6 +29,10 @@
#include <sys/utsname.h>
#include <errno.h>
#include <openssl/rsa.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#define PTS_BUF_SIZE 4096
typedef struct private_pts_t private_pts_t;
@ -1211,27 +1215,78 @@ METHOD(pts_t, get_quote_info, bool,
METHOD(pts_t, verify_quote_signature, bool,
private_pts_t *this, chunk_t data, chunk_t signature)
{
/** Implementation using strongswan -> not working */
public_key_t *aik_pub_key;
chunk_t key_encoding;
EVP_PKEY *pkey = NULL;
RSA *rsa = NULL;
unsigned char *p;
aik_pub_key = this->aik->get_public_key(this->aik);
if (!aik_pub_key)
{
DBG1(DBG_PTS, "failed to get public key from AIK certificate");
return FALSE;
}
if (!aik_pub_key->verify(aik_pub_key, SIGN_RSA_EMSA_PKCS1_SHA1, data, signature))
/** Implementation using strongswan -> not working */
/*if (!aik_pub_key->verify(aik_pub_key, SIGN_RSA_EMSA_PKCS1_SHA1, data, signature))
{
DBG1(DBG_PTS, "signature verification failed for TPM Quote Info");
aik_pub_key->destroy(aik_pub_key);
return FALSE;
goto cleanup;
}
*/
if (!aik_pub_key->get_encoding(aik_pub_key, PUBKEY_SPKI_ASN1_DER, &key_encoding))
{
DBG1(DBG_PTS, "failed to get encoding of AIK public key");
goto cleanup;
}
p = key_encoding.ptr;
pkey = d2i_PUBKEY(NULL, (const unsigned char**)&p, key_encoding.len);
if (!pkey)
{
DBG1(DBG_PTS, "failed to get EVP_PKEY object from AIK public key encoding");
goto cleanup;
}
rsa = EVP_PKEY_get1_RSA(pkey);
if (!rsa)
{
DBG1(DBG_PTS, "failed to get RSA object from EVP_PKEY");
goto cleanup;
}
if (RSA_verify(NID_sha1, data.ptr, data.len, signature.ptr, signature.len, rsa) != 1)
{
DBG1(DBG_PTS, "signature verification failed for TPM Quote Info");
goto cleanup;
}
RSA_free(rsa);
EVP_PKEY_free(pkey);
if (key_encoding.ptr)
{
chunk_clear(&key_encoding);
}
aik_pub_key->destroy(aik_pub_key);
return TRUE;
cleanup:
if (rsa)
{
RSA_free(rsa);
}
if (pkey)
{
EVP_PKEY_free(pkey);
}
if (key_encoding.ptr)
{
chunk_clear(&key_encoding);
}
DESTROY_IF(aik_pub_key);
return FALSE;
}
METHOD(pts_t, destroy, void,