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CRYPT_XML_ALGORITHM_INFO structure (cryptxml.h)

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The CRYPT_XML_ALGORITHM_INFO structure contains algorithm information.

Syntax

typedef struct _CRYPT_XML_ALGORITHM_INFO {
  DWORD cbSize;
  WCHAR *wszAlgorithmURI;
  WCHAR *wszName;
  DWORD dwGroupId;
  WCHAR *wszCNGAlgid;
  WCHAR *wszCNGExtraAlgid;
  DWORD dwSignFlags;
  DWORD dwVerifyFlags;
  void  *pvPaddingInfo;
  void  *pvExtraInfo;
} CRYPT_XML_ALGORITHM_INFO, *PCRYPT_XML_ALGORITHM_INFO;

Members

cbSize

The size, in bytes, of this structure.

wszAlgorithmURI

A pointer to a null-terminated Unicode string that contains the URI associated with the attribute of the SignatureMethod or DigestMethod element of the XML signature.

wszName

Optional. A pointer to a null-terminated Unicode string that contains the display name of the algorithm.

dwGroupId

A DWORD value that specifies the group type to which the algorithm belongs. This member can be one of the following values.

Value Meaning
CRYPT_XML_GROUP_ID_HASH
1
 Hash algorithms
CRYPT_XML_GROUP_ID_SIGN
2
 Signature algorithms

wszCNGAlgid

A pointer to a null-terminated Unicode string that contains an algorithm identifier string that is passed to Cryptography API: Next Generation (CNG) functions. CNG functions use algorithm identifier strings, such as L"SHA1", instead of the ALG_ID data type constants, such as CALG_SHA1.

Note  BCrypt* and NCrypt* functions are defined in Bcrypt.h and Ncrypt.h.
 

wszCNGExtraAlgid

A pointer to a null-terminated Unicode string that contains an extra algorithm string, other than the string in the pwszCNGAlgid member, that is passed to CNG functions.

Note  BCrypt* and NCrypt* functions are defined in Bcrypt.h and Ncrypt.h.
 

dwSignFlags

A DWORD value that contains flag values to be passed to the NCryptSignHash function.

dwVerifyFlags

A DWORD value that is passed to the BCryptVerifySignature function.

pvPaddingInfo

A pointer to a structure that contains padding information to be passed to the NCryptSignHash or BCryptVerifySignature function. The actual type of structure this member points to depends on the value of the dwGroupId member.

pvExtraInfo

Optional. A pointer to a structure that contains extra information that can be passed to the CNG functions.

Note  BCrypt* and NCrypt* functions are defined in Bcrypt.h and Ncrypt.h.
 

Requirements

Requirement Value
Minimum supported client Windows 7 [desktop apps only]
Minimum supported server Windows Server 2008 R2 [desktop apps only]
Header cryptxml.h

See also

Digital Signature Cryptographic Algorithms