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Used Openssl RSA_verify function

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This commit is contained in:
Sansar Choinyambuu
2011-11-28 19:11:47 +01:00
committed by Andreas Steffen
parent 97280c7a47
commit 60bcdb7452
1 changed files with 58 additions and 2 deletions
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src/libpts/pts/pts.c
+58 -2
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@@ -27,6 +27,10 @@
#include <sys/utsname.h> #include <sys/utsname.h>
#include <errno.h> #include <errno.h>
#include <openssl/rsa.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#define PTS_BUF_SIZE 4096 #define PTS_BUF_SIZE 4096
typedef struct private_pts_t private_pts_t; typedef struct private_pts_t private_pts_t;
@@ -1170,8 +1174,11 @@ METHOD(pts_t, get_quote_info, bool,
METHOD(pts_t, verify_quote_signature, bool, METHOD(pts_t, verify_quote_signature, bool,
private_pts_t *this, chunk_t data, chunk_t signature) private_pts_t *this, chunk_t data, chunk_t signature)
{ {
/** Implementation using strongswan -> not working */
public_key_t *aik_pub_key; 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); aik_pub_key = this->aik->get_public_key(this->aik);
if (!aik_pub_key) if (!aik_pub_key)
@@ -1187,10 +1194,59 @@ METHOD(pts_t, verify_quote_signature, bool,
DESTROY_IF(aik_pub_key); DESTROY_IF(aik_pub_key);
return FALSE; return FALSE;
} }
*/
aik_pub_key->destroy(aik_pub_key); 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; 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, METHOD(pts_t, destroy, void,