ns-sspi-secpkgcontext_keyinfoa.md

UID	title	description	helpviewer_keywords	old-location	tech.root	ms.assetid	ms.date	ms.keywords	req.header	req.include-header	req.target-type	req.target-min-winverclnt	req.target-min-winversvr	req.kmdf-ver	req.umdf-ver	req.ddi-compliance	req.unicode-ansi	req.idl	req.max-support	req.namespace	req.assembly	req.type-library	req.lib	req.dll	req.irql	targetos	req.typenames	req.redist	ms.custom	f1_keywords	dev_langs	topic_type	api_type	api_location	api_name
NS:sspi._SecPkgContext_KeyInfoA	SecPkgContext_KeyInfoA (sspi.h)	The SecPkgContext_KeyInfo structure contains information about the session keys used in a security context. (ANSI)	*PSecPkgContext_KeyInfoA PSecPkgContext_KeyInfo PSecPkgContext_KeyInfo structure pointer [Security] SecPkgContext_KeyInfo SecPkgContext_KeyInfo structure [Security] SecPkgContext_KeyInfoA SecPkgContext_KeyInfoW _ssp_secpkgcontext_keyinfo security.secpkgcontext_keyinfo sspi/PSecPkgContext_KeyInfo sspi/SecPkgContext_KeyInfo sspi/SecPkgContext_KeyInfoA sspi/SecPkgContext_KeyInfoW	security\secpkgcontext_keyinfo.htm	security	ec146329-6789-460c-ae62-629a1765a4c1	12/05/2018	*PSecPkgContext_KeyInfoA, PSecPkgContext_KeyInfo, PSecPkgContext_KeyInfo structure pointer [Security], SecPkgContext_KeyInfo, SecPkgContext_KeyInfo structure [Security], SecPkgContext_KeyInfoA, SecPkgContext_KeyInfoW, _ssp_secpkgcontext_keyinfo, security.secpkgcontext_keyinfo, sspi/PSecPkgContext_KeyInfo, sspi/SecPkgContext_KeyInfo, sspi/SecPkgContext_KeyInfoA, sspi/SecPkgContext_KeyInfoW	sspi.h	Security.h	Windows	Windows XP [desktop apps only]	Windows Server 2003 [desktop apps only]				SecPkgContext_KeyInfoW (Unicode) and SecPkgContext_KeyInfoA (ANSI)									Windows	SecPkgContext_KeyInfoA, *PSecPkgContext_KeyInfoA		19H1	_SecPkgContext_KeyInfoA sspi/_SecPkgContext_KeyInfoA PSecPkgContext_KeyInfoA sspi/PSecPkgContext_KeyInfoA SecPkgContext_KeyInfoA sspi/SecPkgContext_KeyInfoA	c++	APIRef kbSyntax	HeaderDef	Sspi.h	SecPkgContext_KeyInfo SecPkgContext_KeyInfoA SecPkgContext_KeyInfoW

SecPkgContext_KeyInfoA structure

-description

The SecPkgContext_KeyInfo structure contains information about the session keys used in a security context. The QueryContextAttributes (General) function uses this structure.

Applications using the Schannel security support provider (SSP) should not use the SecPkgContext_KeyInfo structure. Instead, use the SecPkgContext_ConnectionInfo structure.

-struct-fields

-field sSignatureAlgorithmName

Pointer to a null-terminated string that contains the name, if available, of the algorithm used for generating signatures, for example "MD5" or "SHA-2".

-field sEncryptAlgorithmName

Pointer to a null-terminated string that contains the name, if available, of the algorithm used for encrypting messages. Reserved for future use.

-field KeySize

Specifies the effective key length, in bits, for the session key. This is typically 40, 56, or 128 bits.

-field SignatureAlgorithm

Specifies the algorithm identifier (ALG_ID) used for generating signatures, if available.

-field EncryptAlgorithm

Specifies the algorithm identifier (ALG_ID) used for encrypting messages. Reserved for future use.

-see-also

QueryContextAttributes (General)

-remarks

Note

The sspi.h header defines SecPkgContext_KeyInfo as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.