BCRYPT_KEY_LENGTHS_STRUCT structure (bcrypt.h)
The BCRYPT_KEY_LENGTHS_STRUCT structure defines the range of key sizes that are supported by the provider. This structure is used with the BCRYPT_KEY_LENGTHS property.
This structure is also used with the BCRYPT_AUTH_TAG_LENGTH property to contain the minimum, maximum, and increment size of an authentication tag.
Syntax
typedef struct __BCRYPT_KEY_LENGTHS_STRUCT {
ULONG dwMinLength;
ULONG dwMaxLength;
ULONG dwIncrement;
} BCRYPT_KEY_LENGTHS_STRUCT;
Members
dwMinLength
The minimum length, in bits, of a key.
dwMaxLength
The maximum length, in bits, of a key.
dwIncrement
The number of bits that the key size can be incremented between dwMinLength and dwMaxLength.
Remarks
The key sizes are given in a range that is inclusive of the minimum and maximum values and are separated by the increment. For example, if the minimum key size is 8 bits, the maximum key size is 16 bits, and the increment is 2 bits, the provider would support key sizes of 8, 10, 12, 14, and 16 bits.
Requirements
Requirement | Value |
---|---|
Minimum supported client | Windows Vista [desktop apps only] |
Minimum supported server | Windows Server 2008 [desktop apps only] |
Header | bcrypt.h |