author yamt <>
Tue, 17 Apr 2012 00:01:34 +0000
changeset 280360 e98874280705
child 447310 417343e082a7
permissions -rw-r--r--
sync with head

.\" Copyright (C) 2004 International Business Machines Corporation
.\" Written by Megan Schneider based on the Trusted Computing Group Software Stack Specification Version 1.1 Golden
.de Sh \" Subsection
.if t .Sp
.ne 5
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
.de Ip \" List item
.ie \\n(.$>=3 .ne \\$3
.el .ne 3
.IP "\\$1" \\$2
.TH "Tspi_Hash_VerifySignature" 3 "2004-05-25" "TSS 1.1"
.ce 1
TCG Software Stack Developer's Reference
Tspi_Hash_VerifySignature \- verify the hash value with a given signature
.ad l
.hy 0
.B #include <tss/platform.h>
.B #include <tss/tcpa_defines.h>
.B #include <tss/tcpa_typedef.h>
.B #include <tss/tcpa_struct.h>
.B #include <tss/tss_typedef.h>
.B #include <tss/tss_structs.h>
.B #include <tss/tspi.h>
.BI "TSS_RESULT Tspi_Hash_VerifySignature(TSS_HHASH " hHash ",             TSS_HKEY " hKey ","
.BI "                                     UINT32    " ulSignatureLength ", BYTE*    " rgbSignature ");"

\fBTspi_Hash_VerifySignature\fR verifies the hash value
of a given hash object with a given signature. In order to use this
command, one must have a hash and a signature of the hash that one is
trying to verify. The public key which corresponds to the private key
used to sign the hash is also needed.

.SS hHash
The handle to the hash object instance whose hash value should be signed.
.SS hKey
Handle to the key object which should be used for the signature verification.
.SS ulSignatureLength
The length of the signature data provided at the parameter \fIrgbSignature\fR.
.SS rgbSignature
A pointer to the signature data.

\fBTspi_Hash_VerifySignature\fR returns TSS_SUCCESS on success, otherwise
one of the following values is returned:
\fIhKey\fR is not a valid handle.

An internal SW error has been detected.

One or more parameters is bad.

Hash length is inconsistent with hash algorithm.

Hash object has no internal hash value.

Invalid signature scheme.


\fBTspi_Hash_VerifySignature\fR conforms to the Trusted Computing Group
Software Specification version 1.1 Golden


\fBTspi_Hash_UpdateHash\fR(3), \fBTspi_Hash_SetHashValue\fR(3),
\fBTspi_Hash_Sign\fR(3), \fRTspi_Hash_GetHashValue\fR(3).