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BCRYPT_KEY_DATA_BLOB_HEADER structure (bcrypt.h)

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The BCRYPT_KEY_DATA_BLOB_HEADER structure is used to contain information about a key data BLOB. The key data BLOB must immediately follow this structure in memory.

Syntax

typedef struct _BCRYPT_KEY_DATA_BLOB_HEADER {
  ULONG dwMagic;
  ULONG dwVersion;
  ULONG cbKeyData;
} BCRYPT_KEY_DATA_BLOB_HEADER, *PBCRYPT_KEY_DATA_BLOB_HEADER;

Members

dwMagic

The magic value for the key.

This member must be the following value.

BCRYPT_KEY_DATA_BLOB_MAGIC (0x4d42444b)

dwVersion

Contains the numeric version of the key.

Value Meaning
BCRYPT_KEY_DATA_BLOB_VERSION1
1
 Version 1.

cbKeyData

The size, in bytes, of the key data.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Header bcrypt.h

See also

BCryptExportKey

BCryptImportKey