BCRYPT_DH_KEY_BLOB structure (bcrypt.h)
The BCRYPT_DH_KEY_BLOB structure is used as a header for a Diffie-Hellman public key or private key BLOB in memory.
Syntax
typedef struct _BCRYPT_DH_KEY_BLOB {
ULONG dwMagic;
ULONG cbKey;
} BCRYPT_DH_KEY_BLOB, *PBCRYPT_DH_KEY_BLOB;
Members
dwMagic
Determines the type of key this structure represents. This can be one of the following values.
| Value | Meaning |
|---|---|
|
The structure represents a Diffie-Hellman public key. |
|
The structure represents a Diffie-Hellman private key. |
cbKey
The length, in bytes, of the key.
Remarks
This structure is used as a header for a larger buffer. A Diffie-Hellman public key BLOB (BCRYPT_DH_PUBLIC_BLOB) has the following format in contiguous memory. The Modulus, Generator, and Public numbers are in big-endian format.
BCRYPT_DH_KEY_BLOB
Modulus[cbKey] // Big-endian.
Generator[cbKey] // Big-endian.
Public[cbKey] // Big-endian.
A Diffie-Hellman private key BLOB (BCRYPT_DH_PRIVATE_BLOB) has the following format in contiguous memory. The Modulus, Generator, Public, and PrivateExponent numbers are in big-endian format.
BCRYPT_DH_KEY_BLOB
Modulus[cbKey] // Big-endian.
Generator[cbKey] // Big-endian.
Public[cbKey] // Big-endian.
PrivateExponent[cbKey] // Big-endian.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2008 [desktop apps only] |
| Header | bcrypt.h |