michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: 
michael@0: #include "p12plcy.h"
michael@0: #include "secoid.h"
michael@0: #include "secport.h"
michael@0: #include "secpkcs5.h" 
michael@0: 
michael@0: #define PKCS12_NULL  0x0000
michael@0: 
michael@0: typedef struct pkcs12SuiteMapStr {
michael@0:     SECOidTag		algTag;
michael@0:     unsigned int	keyLengthBits;	/* in bits */
michael@0:     unsigned long	suite;
michael@0:     PRBool 		allowed;
michael@0:     PRBool		preferred;
michael@0: } pkcs12SuiteMap;
michael@0: 
michael@0: static pkcs12SuiteMap pkcs12SuiteMaps[] = {
michael@0:     { SEC_OID_RC4,		40,	PKCS12_RC4_40,		PR_FALSE,	PR_FALSE},
michael@0:     { SEC_OID_RC4,	       128,	PKCS12_RC4_128,		PR_FALSE,	PR_FALSE},
michael@0:     { SEC_OID_RC2_CBC,		40,	PKCS12_RC2_CBC_40,	PR_FALSE,	PR_TRUE},
michael@0:     { SEC_OID_RC2_CBC,	       128,	PKCS12_RC2_CBC_128,	PR_FALSE,	PR_FALSE},
michael@0:     { SEC_OID_DES_CBC,		64,	PKCS12_DES_56,		PR_FALSE,	PR_FALSE},
michael@0:     { SEC_OID_DES_EDE3_CBC,    192,	PKCS12_DES_EDE3_168,	PR_FALSE,	PR_FALSE},
michael@0:     { SEC_OID_UNKNOWN,		 0,	PKCS12_NULL,		PR_FALSE,	PR_FALSE},
michael@0:     { SEC_OID_UNKNOWN,		 0,	0L,			PR_FALSE,	PR_FALSE}
michael@0: };
michael@0: 
michael@0: /* determine if algid is an algorithm which is allowed */
michael@0: PRBool 
michael@0: SEC_PKCS12DecryptionAllowed(SECAlgorithmID *algid)
michael@0: {
michael@0:     unsigned int keyLengthBits;
michael@0:     SECOidTag algId;
michael@0:     int i;
michael@0:    
michael@0:     algId = SEC_PKCS5GetCryptoAlgorithm(algid);
michael@0:     if(algId == SEC_OID_UNKNOWN) {
michael@0: 	return PR_FALSE;
michael@0:     }
michael@0:     
michael@0:     keyLengthBits = (unsigned int)(SEC_PKCS5GetKeyLength(algid) * 8);
michael@0: 
michael@0:     i = 0;
michael@0:     while(pkcs12SuiteMaps[i].algTag != SEC_OID_UNKNOWN) {
michael@0: 	if((pkcs12SuiteMaps[i].algTag == algId) && 
michael@0: 	   (pkcs12SuiteMaps[i].keyLengthBits == keyLengthBits)) {
michael@0: 
michael@0: 	    return pkcs12SuiteMaps[i].allowed;
michael@0: 	}
michael@0: 	i++;
michael@0:     }
michael@0: 
michael@0:     return PR_FALSE;
michael@0: }
michael@0: 
michael@0: /* is any encryption allowed? */
michael@0: PRBool
michael@0: SEC_PKCS12IsEncryptionAllowed(void)
michael@0: {
michael@0:     int i;
michael@0: 
michael@0:     i = 0;
michael@0:     while(pkcs12SuiteMaps[i].algTag != SEC_OID_UNKNOWN) {
michael@0: 	if(pkcs12SuiteMaps[i].allowed == PR_TRUE) {
michael@0: 	    return PR_TRUE;
michael@0: 	} 
michael@0: 	i++;
michael@0:     }
michael@0: 
michael@0:     return PR_FALSE;
michael@0: }
michael@0: 
michael@0: 
michael@0: SECStatus
michael@0: SEC_PKCS12EnableCipher(long which, int on) 
michael@0: {
michael@0:     int i;
michael@0: 
michael@0:     i = 0;
michael@0:     while(pkcs12SuiteMaps[i].suite != 0L) {
michael@0: 	if(pkcs12SuiteMaps[i].suite == (unsigned long)which) {
michael@0: 	    if(on) {
michael@0: 		pkcs12SuiteMaps[i].allowed = PR_TRUE;
michael@0: 	    } else {
michael@0: 		pkcs12SuiteMaps[i].allowed = PR_FALSE;
michael@0: 	    }
michael@0: 	    return SECSuccess;
michael@0: 	}
michael@0: 	i++;
michael@0:     }
michael@0: 
michael@0:     return SECFailure;
michael@0: }
michael@0: 
michael@0: SECStatus
michael@0: SEC_PKCS12SetPreferredCipher(long which, int on)
michael@0: {
michael@0:     int i;
michael@0:     PRBool turnedOff = PR_FALSE;
michael@0:     PRBool turnedOn = PR_FALSE;
michael@0: 
michael@0:     i = 0;
michael@0:     while(pkcs12SuiteMaps[i].suite != 0L) {
michael@0: 	if(pkcs12SuiteMaps[i].preferred == PR_TRUE) {
michael@0: 	    pkcs12SuiteMaps[i].preferred = PR_FALSE;
michael@0: 	    turnedOff = PR_TRUE;
michael@0: 	}
michael@0: 	if(pkcs12SuiteMaps[i].suite == (unsigned long)which) {
michael@0: 	    pkcs12SuiteMaps[i].preferred = PR_TRUE;
michael@0: 	    turnedOn = PR_TRUE;
michael@0: 	}
michael@0: 	i++;
michael@0:     }
michael@0: 
michael@0:     if((turnedOn) && (turnedOff)) {
michael@0: 	return SECSuccess;
michael@0:     }
michael@0: 
michael@0:     return SECFailure;
michael@0: }
michael@0: