Imported Upstream version 0.3.9upstream/0.3.9upstream

1 files changed, 92 insertions, 0 deletions

diff --git a/src/tspi/tsp_sign.c b/src/tspi/tsp_sign.c
new file mode 100644
index 0000000..3a33cb6
--- /dev/null
+++ b/src/tspi/tsp_sign.c
@@ -0,0 +1,92 @@
+
+/*
+ * Licensed Materials - Property of IBM
+ *
+ * trousers - An open source TCG Software Stack
+ *
+ * (C) Copyright International Business Machines Corp. 2007
+ *
+ */
+
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "trousers/tss.h"
+#include "trousers/trousers.h"
+#include "trousers_types.h"
+#include "spi_utils.h"
+#include "capabilities.h"
+#include "tsplog.h"
+#include "obj.h"
+
+
+#ifdef TSS_BUILD_TRANSPORT
+TSS_RESULT
+Transport_Sign(TSS_HCONTEXT tspContext,    /* in */
+	       TCS_KEY_HANDLE keyHandle,   /* in */
+	       UINT32 areaToSignSize,      /* in */
+	       BYTE * areaToSign,  /* in */
+	       TPM_AUTH * privAuth,        /* in, out */
+	       UINT32 * sigSize,   /* out */
+	       BYTE ** sig)        /* out */
+{
+	UINT64 offset;
+	TSS_RESULT result;
+	UINT32 handlesLen, decLen, dataLen;
+	TCS_HANDLE *handles, handle;
+	TPM_DIGEST pubKeyHash;
+	Trspi_HashCtx hashCtx;
+	BYTE *dec, *data;
+
+
+	if ((result = obj_context_transport_init(tspContext)))
+		return result;
+
+	LogDebugFn("Executing in a transport session");
+
+	if ((result = obj_tcskey_get_pubkeyhash(keyHandle, pubKeyHash.digest)))
+		return result;
+
+	result = Trspi_HashInit(&hashCtx, TSS_HASH_SHA1);
+	result |= Trspi_Hash_DIGEST(&hashCtx, pubKeyHash.digest);
+	if ((result |= Trspi_HashFinal(&hashCtx, pubKeyHash.digest)))
+		return result;
+
+	handlesLen = 1;
+	handle = keyHandle;
+	handles = &handle;
+
+	dataLen = sizeof(UINT32) + areaToSignSize;
+	if ((data = malloc(dataLen)) == NULL) {
+		LogError("malloc of %u bytes failed", dataLen);
+		return TSPERR(TSS_E_OUTOFMEMORY);
+	}
+
+	offset = 0;
+	Trspi_LoadBlob_UINT32(&offset, areaToSignSize, data);
+	Trspi_LoadBlob(&offset, areaToSignSize, data, areaToSign);
+
+	if ((result = obj_context_transport_execute(tspContext, TPM_ORD_Sign, dataLen, data,
+						    &pubKeyHash, &handlesLen, &handles,
+						    privAuth, NULL, &decLen, &dec))) {
+		free(data);
+		return result;
+	}
+	free(data);
+
+	offset = 0;
+	Trspi_UnloadBlob_UINT32(&offset, sigSize, dec);
+
+	if ((*sig = malloc(*sigSize)) == NULL) {
+		free(dec);
+		LogError("malloc of %u bytes failed", *sigSize);
+		*sigSize = 0;
+		return TSPERR(TSS_E_OUTOFMEMORY);
+	}
+	Trspi_UnloadBlob(&offset, *sigSize, dec, *sig);
+
+	return result;
+}
+#endif
+