ns-wincrypt-schannel_alg.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:wincrypt._SCHANNEL_ALG	SCHANNEL_ALG (wincrypt.h)	The SCHANNEL_ALG structure contains algorithm and key size information. It is used as the structure passed as pbData in CryptSetKeyParam when dwParam is set to KP_SCHANNEL_ALG.	*PSCHANNEL_ALG PSCHANNEL_ALG PSCHANNEL_ALG structure pointer [Security] SCHANNEL_ALG SCHANNEL_ALG structure [Security] SCHANNEL_ENC_KEY SCHANNEL_MAC_KEY _crypto2_schannel_alg security.schannel_alg wincrypt/PSCHANNEL_ALG wincrypt/SCHANNEL_ALG	security\schannel_alg.htm	security	55afebf4-8872-42a1-847f-ff0240c2be20	12/05/2018	*PSCHANNEL_ALG, PSCHANNEL_ALG, PSCHANNEL_ALG structure pointer [Security], SCHANNEL_ALG, SCHANNEL_ALG structure [Security], SCHANNEL_ENC_KEY, SCHANNEL_MAC_KEY, _crypto2_schannel_alg, security.schannel_alg, wincrypt/PSCHANNEL_ALG, wincrypt/SCHANNEL_ALG	wincrypt.h		Windows	Windows XP [desktop apps only]	Windows Server 2003 [desktop apps only]													Windows	SCHANNEL_ALG, *PSCHANNEL_ALG		19H1	_SCHANNEL_ALG wincrypt/_SCHANNEL_ALG PSCHANNEL_ALG wincrypt/PSCHANNEL_ALG SCHANNEL_ALG wincrypt/SCHANNEL_ALG	c++	APIRef kbSyntax	HeaderDef	Wincrypt.h	SCHANNEL_ALG

SCHANNEL_ALG structure

-description

The SCHANNEL_ALG structure contains algorithm and key size information. It is used as the structure passed as pbData in CryptSetKeyParam when dwParam is set to KP_SCHANNEL_ALG.

-struct-fields

-field dwUse

Indicates the use of derived keys. The following values can be used.

Value	Meaning
SCHANNEL_MAC_KEY	Derive keys to create or verify SSL MAC signatures.
SCHANNEL_ENC_KEY	Derive keys to encrypt or decrypt data.

-field Algid

Algorithms used with the derived keys. Note that no algorithm will be specified unless earlier obtained from the CSP by enumeration.

SCHANNEL_MAC_KEYs can be either MD5 or SHA.

SCHANNEL_ENC_KEYs can be RC4, DES, 3DES, or RC2.

-field cBits

Size in bits of the derived keys.

-field dwFlags

This flag can be set to INTERNATIONAL_USAGE (0x00000001), indicating that derived keys must follow SSL export rules.

-field dwReserved

Reserved for future use. Should be set to zero.