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+.\" 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
+.br
+.if t .Sp
+.ne 5
+.PP
+\fB\\$1\fR
+.PP
+..
+.de Sp \" Vertical space (when we can't use .PP)
+.if t .sp .5v
+.if n .sp
+..
+.de Ip \" List item
+.br
+.ie \\n(.$>=3 .ne \\$3
+.el .ne 3
+.IP "\\$1" \\$2
+..
+.TH "Tspi_Hash_Sign" 3 "2004-05-25" "TSS 1.1"
+.ce 1
+TCG Software Stack Developer's Reference
+.SH NAME
+Tspi_Hash_Sign \- sign the hash data of an object with a signing key
+.SH "SYNOPSIS"
+.ad l
+.hy 0
+.nf
+.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>
+.sp
+.BI "TSS_RESULT Tspi_Hash_Sign(TSS_HHASH " hHash ",              TSS_HKEY " hKey ","
+.BI "                          UINT32    " pulSignatureLength ", BYTE**   " prgbSignature ");"
+.fi
+.sp
+.ad
+.hy
+
+.SH "DESCRIPTION"
+.PP
+\fBTspi_Hash_Sign\fR signs the hash data of an
+object with a given signing key. The data must be set at the hash
+instance associated with \fIhHash\fR by calling
+\fBTspi_Hash_SetHashValue\fR or \fBTspi_Hash_UpdateHash\fR. The
+\fBTspi_Hash_Sign\fR method allocates a memory block for the
+\fIprgbSignature\fR data. This memory must be released using
+\fBTspi_Context_FreeMemory\fR.
+
+.SH "PARAMETERS"
+.PP
+.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.
+.SS pulSignatureLength
+Receives the length of the signature data returned at the parameter
+\fIprgbSignature\fR on successful completion.
+.SS prgbSignature
+Receives a pointer to the signature data on successful completion.
+
+.SH "RETURN CODES"
+.PP
+\fBTspi_Hash_Sign\fR returns TSS_SUCCESS on success, otherwise one
+of the following values is returned:
+.TP
+.SM TSS_E_INVALID_HANDLE
+\fIhKey\fR is not a valid handle.
+
+.TP
+.SM TSS_E_INTERNAL_ERROR
+An internal SW error has been detected.
+
+.TP
+.SM TSS_E_BAD_PARAMETER
+One or more parameters is bad.
+
+.TP
+.SM TSS_E_HASH_INVALID_LENGTH
+Hash length is inconsistent with hash algorithm.
+
+.TP
+.SM TSS_E_HASH_NO_DATA
+Hash object has no internal hash value.
+
+.TP
+.SM TSS_E_HASH_NO_IDENTIFIER
+The hash algorithm identifier is not set.
+
+
+.SH "CONFORMING TO"
+
+.PP
+\fBTspi_Hash_Sign\fR conforms to the Trusted Computing Group Software
+Specification version 1.1 Golden
+
+.SH "SEE ALSO"
+
+.PP
+\fBTspi_Hash_UpdateHash\fR(3), \fBTspi_Hash_SetHashValue\fR(3),
+\fBTspi_Hash_VerifySignature\fR(3).
+