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#ifndef __TRANSFORM_DIGEST__
#define __TRANSFORM_DIGEST__
/*
* Copyright (c) 2010-2011 Apple Inc. All Rights Reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#include "SecTransform.h"
#ifdef __cplusplus
extern "C" {
#endif
CF_ASSUME_NONNULL_BEGIN
CF_IMPLICIT_BRIDGING_ENABLED
/*!
@abstract
Specifies an MD2 digest
*/
extern const CFStringRef kSecDigestMD2;
/*!
@abstract
Specifies an MD4 digest
*/
extern const CFStringRef kSecDigestMD4;
/*!
@abstract
Specifies an MD5 digest
*/
extern const CFStringRef kSecDigestMD5;
/*!
@abstract
Specifies a SHA1 digest
*/
extern const CFStringRef kSecDigestSHA1;
/*!
@abstract
Specifies a SHA2 digest.
*/
extern const CFStringRef kSecDigestSHA2;
/*!
@abstract
Specifies an HMAC using the MD5 digest algorithm.
*/
extern const CFStringRef kSecDigestHMACMD5;
/*!
@abstract
Specifies an HMAC using the SHA1 digest algorithm.
*/
extern const CFStringRef kSecDigestHMACSHA1;
/*!
@abstract
Specifies an HMAC using one of the SHA2 digest algorithms.
*/
extern const CFStringRef kSecDigestHMACSHA2;
/*!
@constant kSecDigestTypeAttribute
Used with SecTransformGetAttribute to query the attribute type.
Returns one of the strings defined in the previous section.
*/
extern const CFStringRef kSecDigestTypeAttribute;
/*!
@constant kSecDigestLengthAttribute
Used with SecTransformGetAttribute to query the length attribute.
Returns a CFNumberRef that contains the length.
*/
extern const CFStringRef kSecDigestLengthAttribute;
/*!
@constant kSecDigestHMACKeyAttribute
When set and used with one of the HMAC digest types, sets the key
for the HMAC operation. The data type for this attribute must be
a CFDataRef. If this value is not set, the transform will assume
a zero length key.
*/
extern const CFStringRef kSecDigestHMACKeyAttribute;
/*!
@function SecDigestTransformCreate
@abstract Creates a digest computation object.
@param digestType The type of digest to compute. You may pass NULL
for this parameter, in which case an appropriate
algorithm will be chosen for you.
@param digestLength The desired digest length. Note that certain
algorithms may only support certain sizes. You may
pass 0 for this parameter, in which case an
appropriate length will be chosen for you.
@param error A pointer to a CFErrorRef. This pointer will be set
if an error occurred. This value may be NULL if you
do not want an error returned.
@result A pointer to a SecTransformRef object. This object must
be released with CFRelease when you are done with
it. This function will return NULL if an error
occurred.
@discussion This function creates a transform which computes a
cryptographic digest.
*/
SecTransformRef SecDigestTransformCreate(CFTypeRef __nullable digestType,
CFIndex digestLength,
CFErrorRef* error
)
__OSX_AVAILABLE_STARTING(__MAC_10_7,__IPHONE_NA);
/*!
@function SecDigestTransformGetTypeID
@abstract Return the CFTypeID of a SecDigestTransform
@result The CFTypeID
*/
CFTypeID SecDigestTransformGetTypeID()
__OSX_AVAILABLE_STARTING(__MAC_10_7,__IPHONE_NA);
CF_IMPLICIT_BRIDGING_DISABLED
CF_ASSUME_NONNULL_END
#ifdef __cplusplus
};
#endif
#endif