Developer CD Series 1999 July: Mac OS SDK

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Text File | 1998-08-17 | 18.5 KB | 500 lines | [TEXT/MPS ]

; ; File: DigitalSignature.a ; ; Contains: Digital Signature Interfaces. ; ; Version: Technology: AOCE toolbox 1.02 ; Release: Universal Interfaces 3.2 ; ; Copyright: © 1994-1998 by Apple Computer, Inc., all rights reserved. ; ; Bugs?: For bug reports, consult the following page on ; the World Wide Web: ; ; http://developer.apple.com/bugreporter/ ; ; IF &TYPE('__DIGITALSIGNATURE__') = 'UNDEFINED' THEN __DIGITALSIGNATURE__ SET 1 IF &TYPE('__MACTYPES__') = 'UNDEFINED' THEN include 'MacTypes.a' ENDIF IF &TYPE('__MIXEDMODE__') = 'UNDEFINED' THEN include 'MixedMode.a' ENDIF IF &TYPE('__FILES__') = 'UNDEFINED' THEN include 'Files.a' ENDIF ; values of SIGNameAttributeType kSIGCountryCode EQU 0 kSIGOrganization EQU 1 kSIGStreetAddress EQU 2 kSIGState EQU 3 kSIGLocality EQU 4 kSIGCommonName EQU 5 kSIGTitle EQU 6 kSIGOrganizationUnit EQU 7 kSIGPostalCode EQU 8 ; typedef unsigned short SIGNameAttributeType ; ;Certificate status codes returned in SIGCertInfo or SIGSignerInfo from ;either SIGGetCertInfo or SIGGetSignerInfo respectively. kSIGValid means that ;the certificate is currently valid. kSIGPending means the certificate is ;currently not valid - but will be. kSIGExpired means the certificate has ;expired. A time is always associated with a SIGCertStatus. In each case the ;time has a specific interpretation. When the status is kSIGValid the time is ;when the certificate will expire. When the status is kSIGPending the time is ;when the certificate will become valid. When the status is kSIGExpired the time ;is when the certificate expired. In the SIGCertInfo structure, the startDate ;and endDate fields hold the appropriate date information. In the SIGSignerInfo ;structure, this information is provided in the certSetStatusTime field. In the ;SIGSignerInfo struct, the status time is actually represented by the SIGSignatureStatus ;field which can contain any of the types below. NOTE: The only time you will get ;a kSIGInvalid status is when it pertains to a SIGSignatureStatus field and only when ;you get a signature that was created after the certificates expiration date, something ;we are not allowing on the Mac but that may not be restricted on other platforms. Also, ;it will not be possible to get a kSIGPending value for SIGSignatureStatus on the Mac but ;possibly allowed by other platforms. ; ; Values for SIGCertStatus or SIGSignatureStatus kSIGValid EQU 0 ; possible for either a SIGCertStatus or SIGSignatureStatus kSIGPending EQU 1 ; possible for either a SIGCertStatus or SIGSignatureStatus kSIGExpired EQU 2 ; possible for either a SIGCertStatus or SIGSignatureStatus * possible only for a SIGSignatureStatus kSIGInvalid EQU 3 ; typedef unsigned short SIGCertStatus ; typedef unsigned short SIGSignatureStatus ; Number of bytes needed for a digest record when using SIGDigest kSIGDigestSize EQU 16 SIGDigestData RECORD 0 elements ds.b 16 sizeof EQU * ; size: $10 (16) ENDR ; typedef Byte * SIGDigestDataPtr SIGCertInfo RECORD 0 startDate ds.l 1 ; offset: $0 (0) ; cert start validity date endDate ds.l 1 ; offset: $4 (4) ; cert end validity date certStatus ds.w 1 ; offset: $8 (8) ; see comment on SIGCertStatus for definition certAttributeCount ds.l 1 ; offset: $A (10) ; number of name attributes in this cert issuerAttributeCount ds.l 1 ; offset: $E (14) ; number of name attributes in this certs issuer serialNumber ds Str255 ; offset: $12 (18) ; cert serial number sizeof EQU * ; size: $112 (274) ENDR ; typedef struct SIGCertInfo * SIGCertInfoPtr SIGSignerInfo RECORD 0 signingTime ds.l 1 ; offset: $0 (0) ; time of signing certCount ds.l 1 ; offset: $4 (4) ; number of certificates in the cert set certSetStatusTime ds.l 1 ; offset: $8 (8) ; Worst cert status time. See comment on SIGCertStatus for definition signatureStatus ds.w 1 ; offset: $C (12) ; The status of the signature. See comment on SIGCertStatus for definition sizeof EQU * ; size: $E (14) ENDR ; typedef struct SIGSignerInfo * SIGSignerInfoPtr SIGNameAttributesInfo RECORD 0 onNewLevel ds.b 1 ; offset: $0 (0) filler1 ds.b 1 ; offset: $1 (1) attributeType ds.w 1 ; offset: $2 (2) attributeScript ds.w 1 ; offset: $4 (4) attribute ds Str255 ; offset: $6 (6) sizeof EQU * ; size: $106 (262) ENDR ; typedef struct SIGNameAttributesInfo * SIGNameAttributesInfoPtr ; typedef Ptr SIGContextPtr ; typedef Ptr SIGSignaturePtr ; ;Certificates are always in order. That is, the signers cert is always 0, the ;issuer of the signers cert is always 1 etc… to the number of certificates-1. ;You can use this constant for readability in your code. ; kSIGSignerCertIndex EQU 0 ; ;Call back procedure supplied by developer, return false to cancel the current ;process. ; ; ;Resource id's of standard signature icon suite, all sizes and colors are available. ; kSIGSignatureIconResID EQU -16797 kSIGValidSignatureIconResID EQU -16799 kSIGInvalidSignatureIconResID EQU -16798 ; ——————————————————————————————— CONTEXT CALLS ——————————————————————————————— ;To use the Digital Signature toolbox you will need a SIGContextPtr. To create ;a SIGContextPtr you simply call SIGNewContext and it will create and initialize ;a context for you. To free the memory occupied by the context and invalidate ;its internal data, call SIGDisposeContext. An initialized context has no notion ;of the type of operation it will be performing however, once you call ;SIGSignPrepare SIGVerifyPrepare, or SIGDigestPrepare, the contexts operation ;type is set and to switch to another type of operation will require creating a ;new context. Be sure to pass the same context to corresponding toolbox calls ;(ie SIGSignPrepare, SIGProcessData, SIGSign) in other words mixing lets say ;signing and verify calls with the same context is not allowed. ; ; ; pascal OSErr SIGNewContext(SIGContextPtr *context) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGNewContext move.l #$0002076C,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGNewContext ENDIF ; ; pascal OSErr SIGDisposeContext(SIGContextPtr context) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGDisposeContext move.l #$0002076D,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGDisposeContext ENDIF ; ——————————————————————————————— SIGNING CALLS ——————————————————————————————— ;Once you have created a SIGContextPtr, you create a signature by calling ;SIGSignPrepare once, followed by n calls to SIGProcessData, followed by one call ;toRcpt SIGSign. To create another signature on different data but for the same ;signer, don't dispose of the context and call SIGProcessData for the new data ;followed by a call SIGSign again. In this case the signer will not be prompted ;for their signer and password again as it was already provided. Once you call ;SIGDisposeContext, all signer information will be cleared out of the context and ;the signer will be re-prompted. The signer file FSSpecPtr should be set to nil ;if you want the toolbox to use the last signer by default or prompt for a signer ;if none exists. The prompt parameter can be used to pass a string to be displayed ;in the dialog that prompts the user for their password. If the substring "^1" ;(without the quotes) is in the prompt string, then the toolbox will replace it ;with the name of the signer from the signer selected by the user. If an empty ;string is passed, the following default string will be sent to the toolbox ;"\pSigning as ^1.". You can call any of the utility routines after SIGSignPrepare ;or SIGSign to get information about the signer or certs. ; ; ; pascal OSErr SIGSignPrepare(SIGContextPtr context, const FSSpec *signerFile, ConstStr255Param prompt, Size *signatureSize) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGSignPrepare move.l #$0008076E,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGSignPrepare ENDIF ; ; pascal OSErr SIGSign(SIGContextPtr context, SIGSignaturePtr signature, SIGStatusUPP statusProc) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGSign move.l #$0006076F,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGSign ENDIF ; ——————————————————————————————— VERIFYING CALLS ——————————————————————————————— ;Once you have created a SIGContextPtr, you verify a signature by calling ;SIGVerifyPrepare once, followed by n calls to SIGProcessData, followed by one ;call to SIGVerify. Check the return code from SIGVerify to see if the signature ;verified or not (noErr is returned on success otherwise the appropriate error ;code). Upon successfull verification, you can call any of the utility routines ;toRcpt find out who signed the data. ; ; ; pascal OSErr SIGVerifyPrepare(SIGContextPtr context, SIGSignaturePtr signature, Size signatureSize, SIGStatusUPP statusProc) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGVerifyPrepare move.l #$00080770,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGVerifyPrepare ENDIF ; ; pascal OSErr SIGVerify(SIGContextPtr context) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGVerify move.l #$00020771,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGVerify ENDIF ; —————————————————————————————— DIGESTING CALLS —————————————————————————————— ;Once you have created a SIGContextPtr, you create a digest by calling ;SIGDigestPrepare once, followed by n calls to SIGProcessData, followed by one ;call to SIGDigest. You can dispose of the context after SIGDigest as the ;SIGDigestData does not reference back into it. SIGDigest returns the digest in ;digest. ; ; ; pascal OSErr SIGDigestPrepare(SIGContextPtr context) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGDigestPrepare move.l #$00020772,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGDigestPrepare ENDIF ; ; pascal OSErr SIGDigest(SIGContextPtr context, SIGDigestData digest) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGDigest move.l #$00040773,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGDigest ENDIF ; —————————————————————————————— PROCESSING DATA —————————————————————————————— ;To process data during a digest, sign, or verify operation call SIGProcessData ;as many times as necessary and with any sized blocks of data. The data needs to ;be processed in the same order during corresponding sign and verify operations ;but does not need to be processed in the same sized chunks (i.e., the toolbox ;just sees it as a continuous bit stream). ; ; ; pascal OSErr SIGProcessData(SIGContextPtr context, const void *data, Size dataSize) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGProcessData move.l #$00060774,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGProcessData ENDIF ; ——————————————————————————————— UTILITY CALLS ——————————————————————————————— ;Given a context that has successfully performed a verification SIGShowSigner ;will display a modal dialog with the entire distinguished name of the person ;who signed the data. the prompt (if supplied) will appear at the top of the ;dialog. If no prompt is specified, the default prompt "\pVerification ;Successfull." will appear. ; ;Given a context that has been populated by calling SIGSignPrepare, SIGSign or a ;successful SIGVerify, you can make the remaining utility calls: ; ;SIGGetSignerInfo will return the SignerInfo record. The certCount can be used ;toRcpt index into the certificate set when calling SIGGetCertInfo, ;SIGGetCertNameAttributes or SIGGetCertIssuerNameAttributes. The signingTime is ;only defined if the call is made after SIGSign or SIGVerify. The certSetStatus ;will tell you the best status of the entire certificate set while ;certSetStatusTime will correspond to the time associated with that status (see ;definitions above). ; ;SIGGetCertInfo will return the SIGCertInfo record when given a valid index into ;the cert set in certIndex. Note: The cert at index kSIGSignerCertIndex is ;always the signers certificate. The serial number, start date and end date ;are there should you wish to display that info. The certAttributeCount and ;issuerAttributeCount provide the number of parts in the name of that certificate ;or that certificates issuer respectively. You use these numbers to index into ;either SIGGetCertNameAttributes or SIGGetCertIssuerNameAttributes to retrieve ;the name. The certStatus will tell you the status of the certificate while ;certStatusTime will correspond to the time associated with that status (see ;definitions above). ; ;SIGGetCertNameAttributes and SIGGetCertIssuerNameAttributes return name parts ;of the certificate at certIndex and attributeIndex. The newLevel return value ;tells you wether the name attribute returned is at the same level in the name ;hierarchy as the previous attribute. The type return value tells you the type ;of attribute returned. nameAttribute is the actual string containing the name ;attribute. So, if you wanted to display the entire distinguished name of the ;person who's signature was just validated you could do something like this; ; ; (…… variable declarations and verification code would preceed this sample ……) ; ; error = SIGGetCertInfo(verifyContext, kSIGSignerCertIndex, &certInfo); ; HandleErr(error); ; ; for (i = 0; i <= certInfo.certAttributeCount-1; i++) ; { ; error = SIGGetCertNameAttributes( ; verifyContext, kSIGSignerCertIndex, i, &newLevel, &type, theAttribute); ; HandleErr(error); ; DisplayNamePart(theAttribute, type, newLevel); ; } ; ; ; pascal OSErr SIGShowSigner(SIGContextPtr context, ConstStr255Param prompt) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGShowSigner move.l #$00040775,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGShowSigner ENDIF ; ; pascal OSErr SIGGetSignerInfo(SIGContextPtr context, SIGSignerInfo *signerInfo) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGGetSignerInfo move.l #$00040776,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGGetSignerInfo ENDIF ; ; pascal OSErr SIGGetCertInfo(SIGContextPtr context, unsigned long certIndex, SIGCertInfo *certInfo) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGGetCertInfo move.l #$00060777,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGGetCertInfo ENDIF ; ; pascal OSErr SIGGetCertNameAttributes(SIGContextPtr context, unsigned long certIndex, unsigned long attributeIndex, SIGNameAttributesInfo *attributeInfo) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGGetCertNameAttributes move.l #$00080778,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGGetCertNameAttributes ENDIF ; ; pascal OSErr SIGGetCertIssuerNameAttributes(SIGContextPtr context, unsigned long certIndex, unsigned long attributeIndex, SIGNameAttributesInfo *attributeInfo) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGGetCertIssuerNameAttributes move.l #$00080779,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGGetCertIssuerNameAttributes ENDIF ; ——————————————————————————— FILE SIGN & VERIFY CALLS —————————————————————————— ;These calls allow you to detect the presence of a standard signtaure in a file as ;well as sign and verify files in a standard way. An example of this is the Finder, ;which uses these calls to allow the user to "drop sign" a file. ; ;To detect if a file is signed in the standard way, pass the FSSpec of the file to SIGFileIsSigned. ;A result of noErr means the file is in fact signed, otherwise, a kSIGNoSignature error will ;be returned. ; ;Once you have created a SIGContextPtr, you can make calls to either sign or verify a file in ;a standard way: ; ;To sign a file, call SIGSignPrepare followed by 'n' number of calls to SIGSignFile, ;passing it the file spec for each file you wish to sign in turn. You supply the context, the signature ;size that was returned from SIGSignPrepare and an optional call back proc. The call will take care of all ;the processing of data and affixing the signature to the file. If a signature already exists in the file, ;it is replaced with the newly created signature. ; ;To verify a file that was signed using SIGSignFile, call SIGVerifyFile passing it a new context and ;the file spec. Once this call has completed, if the verification is successfull, you can pass the context ;to SIGShowSigner to display the name of the person who signed the file. ; ; ; pascal OSErr SIGFileIsSigned(const FSSpec *fileSpec) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGFileIsSigned move.l #$000209C4,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGFileIsSigned ENDIF ; ; pascal OSErr SIGSignFile(SIGContextPtr context, Size signatureSize, const FSSpec *fileSpec, SIGStatusUPP statusProc) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGSignFile move.l #$000809C5,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGSignFile ENDIF ; ; pascal OSErr SIGVerifyFile(SIGContextPtr context, const FSSpec *fileSpec, SIGStatusUPP statusProc) ; IF TARGET_OS_MAC ** TARGET_CPU_68K ** ¬ TARGET_RT_MAC_CFM THEN Macro _SIGVerifyFile move.l #$000609C6,D0 dc.w $AA5D EndM ELSEIF TARGET_OS_MAC ** TARGET_RT_MAC_CFM THEN IMPORT_CFM_FUNCTION SIGVerifyFile ENDIF ENDIF ; __DIGITALSIGNATURE__