1  #ifndef __TRANSFORM_SIGN_VERIFY__
  2  #define __TRANSFORM_SIGN_VERIFY__
  3  
  4  
  5  /*
  6   * Copyright (c) 2010-2011 Apple Inc. All Rights Reserved.
  7   * 
  8   * @APPLE_LICENSE_HEADER_START@
  9   * 
 10   * This file contains Original Code and/or Modifications of Original Code
 11   * as defined in and that are subject to the Apple Public Source License
 12   * Version 2.0 (the 'License'). You may not use this file except in
 13   * compliance with the License. Please obtain a copy of the License at
 14   * http://www.opensource.apple.com/apsl/ and read it before using this
 15   * file.
 16   * 
 17   * The Original Code and all software distributed under the License are
 18   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 19   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 20   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 21   * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 22   * Please see the License for the specific language governing rights and
 23   * limitations under the License.
 24   * 
 25   * @APPLE_LICENSE_HEADER_END@
 26   */
 27  
 28  #include <Security/SecTransform.h>
 29  #include <Security/SecBase.h>
 30  
 31  
 32  #ifdef __cplusplus
 33  extern "C" {
 34  #endif
 35  
 36      CF_ASSUME_NONNULL_BEGIN
 37      CF_IMPLICIT_BRIDGING_ENABLED
 38  
 39  	extern const CFStringRef kSecKeyAttributeName, kSecSignatureAttributeName, kSecInputIsAttributeName;
 40  	// WARNING: kSecInputIsRaw is frequently cryptographically unsafe (for example if you don't blind a DSA or ECDSA signature you give away the key very quickly), please only use it if you really know the math.
 41  	extern const CFStringRef kSecInputIsPlainText, kSecInputIsDigest, kSecInputIsRaw;
 42  	// Supported optional attributes: kSecDigestTypeAttribute (kSecDigestMD2, kSecDigestMD4, kSecDigestMD5, kSecDigestSHA1, kSecDigestSHA2), kSecDigestLengthAttribute
 43  	
 44  	/*!
 45  	 @function SecSignTransformCreate
 46  	 @abstract			Creates a sign computation object.
 47  	 @param key		A SecKey with the private key used for signing.
 48  	 @param error		A pointer to a CFErrorRef.  This pointer will be set
 49  	 if an error occurred.  This value may be NULL if you
 50  	 do not want an error returned.
 51  	 @result				A pointer to a SecTransformRef object.  This object must
 52  	 be released with CFRelease when you are done with
 53  	 it.  This function will return NULL if an error
 54  	 occurred.
 55  	 @discussion			This function creates a transform which computes a
 56  	 cryptographic signature.   The InputIS defaults to kSecInputIsPlainText,
 57  	 and the DigestType and DigestLength default to something appropriate for
 58  	 the type of key you have supplied.
 59  	 */
 60  
 61  	__nullable
 62  	SecTransformRef SecSignTransformCreate(SecKeyRef key,
 63  											 CFErrorRef* error
 64  											 )
 65  	__OSX_AVAILABLE_STARTING(__MAC_10_7,__IPHONE_NA);
 66  	
 67  	/*!
 68  	 @function SecVerifyTransformCreate
 69  	 @abstract			Creates a verify computation object.
 70  	 @param key		A SecKey with the public key used for signing.
 71  	 @param signature	A CFDataRef with the signature.   This value may be
 72  	 NULL, and you may connect a transform to kSecTransformSignatureAttributeName
 73  	 to supply it from another signature.
 74  	 @param error		A pointer to a CFErrorRef.  This pointer will be set
 75  	 if an error occurred.  This value may be NULL if you
 76  	 do not want an error returned.
 77  	 @result				A pointer to a SecTransformRef object.  This object must
 78  	 be released with CFRelease when you are done with
 79  	 it.  This function will return NULL if an error
 80  	 occurred.
 81  	 @discussion			This function creates a transform which verifies a
 82  	 cryptographic signature.  The InputIS defaults to kSecInputIsPlainText,
 83  	 and the DigestType and DigestLength default to something appropriate for
 84  	 the type of key you have supplied.
 85  	 */
 86  
 87      __nullable
 88  	SecTransformRef SecVerifyTransformCreate(SecKeyRef key,
 89  											 CFDataRef __nullable signature,
 90  											 CFErrorRef* error
 91  											 )
 92  	__OSX_AVAILABLE_STARTING(__MAC_10_7,__IPHONE_NA);
 93  
 94      CF_IMPLICIT_BRIDGING_DISABLED
 95      CF_ASSUME_NONNULL_END
 96  	
 97  #ifdef __cplusplus
 98  };
 99  #endif
100  
101  
102  #endif