| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| #include "p12plcy.h" |
| #include "secoid.h" |
| #include "secport.h" |
| #include "secpkcs5.h" |
| #include "secerr.h" |
| |
| #define PKCS12_NULL 0x0000 |
| |
| typedef struct pkcs12SuiteMapStr { |
| SECOidTag algTag; |
| unsigned int keyLengthBits; /* in bits */ |
| unsigned long suite; |
| PRBool allowed; |
| PRBool preferred; |
| } pkcs12SuiteMap; |
| |
| static pkcs12SuiteMap pkcs12SuiteMaps[] = { |
| { SEC_OID_RC4, 40, PKCS12_RC4_40, PR_FALSE, PR_FALSE }, |
| { SEC_OID_RC4, 128, PKCS12_RC4_128, PR_FALSE, PR_FALSE }, |
| { SEC_OID_RC2_CBC, 40, PKCS12_RC2_CBC_40, PR_FALSE, PR_TRUE }, |
| { SEC_OID_RC2_CBC, 128, PKCS12_RC2_CBC_128, PR_FALSE, PR_FALSE }, |
| { SEC_OID_DES_CBC, 64, PKCS12_DES_56, PR_FALSE, PR_FALSE }, |
| { SEC_OID_DES_EDE3_CBC, 192, PKCS12_DES_EDE3_168, PR_FALSE, PR_FALSE }, |
| { SEC_OID_AES_128_CBC, 128, PKCS12_AES_CBC_128, PR_FALSE, PR_FALSE }, |
| { SEC_OID_AES_192_CBC, 192, PKCS12_AES_CBC_192, PR_FALSE, PR_FALSE }, |
| { SEC_OID_AES_256_CBC, 256, PKCS12_AES_CBC_256, PR_FALSE, PR_FALSE }, |
| { SEC_OID_UNKNOWN, 0, PKCS12_NULL, PR_FALSE, PR_FALSE }, |
| { SEC_OID_UNKNOWN, 0, 0L, PR_FALSE, PR_FALSE } |
| }; |
| |
| /* determine if algid is an algorithm which is allowed */ |
| static PRBool |
| sec_PKCS12Allowed(SECOidTag alg) |
| { |
| PRUint32 policy; |
| SECStatus rv; |
| |
| rv = NSS_GetAlgorithmPolicy(alg, &policy); |
| if (rv != SECSuccess) { |
| return PR_FALSE; |
| } |
| if (policy & NSS_USE_ALG_IN_PKCS12) { |
| return PR_TRUE; |
| } |
| return PR_FALSE; |
| } |
| |
| PRBool |
| SEC_PKCS12DecryptionAllowed(SECAlgorithmID *algid) |
| { |
| SECOidTag algId; |
| |
| algId = SEC_PKCS5GetCryptoAlgorithm(algid); |
| if (algId == SEC_OID_UNKNOWN) { |
| return PR_FALSE; |
| } |
| return sec_PKCS12Allowed(algId); |
| } |
| |
| /* is any encryption allowed? */ |
| PRBool |
| SEC_PKCS12IsEncryptionAllowed(void) |
| { |
| int i; |
| |
| for (i = 0; pkcs12SuiteMaps[i].algTag != SEC_OID_UNKNOWN; i++) { |
| /* we're going to return true here if any of the traditional |
| * algorithms are enabled */ |
| if (sec_PKCS12Allowed(pkcs12SuiteMaps[i].algTag)) { |
| return PR_TRUE; |
| } |
| } |
| |
| return PR_FALSE; |
| } |
| |
| /* keep the traditional enable/disable for old ciphers so old applications |
| * continue to work. This only works for the traditional pkcs12 values, |
| * you need to use NSS_SetAlgorithmPolicy directly for other ciphers. */ |
| SECStatus |
| SEC_PKCS12EnableCipher(long which, int on) |
| { |
| int i; |
| SECStatus rv; |
| PRUint32 set = on ? NSS_USE_ALG_IN_PKCS12 : 0; |
| PRUint32 clear = on ? 0 : NSS_USE_ALG_IN_PKCS12; |
| |
| for (i = 0; pkcs12SuiteMaps[i].suite != 0L; i++) { |
| if (pkcs12SuiteMaps[i].suite == (unsigned long)which) { |
| rv = NSS_SetAlgorithmPolicy(pkcs12SuiteMaps[i].algTag, set, clear); |
| /* could fail if the policy has been locked */ |
| if (rv != SECSuccess) { |
| return rv; |
| } |
| } |
| } |
| PORT_SetError(SEC_ERROR_INVALID_ALGORITHM); |
| return SECFailure; |
| } |
| |
| SECStatus |
| SEC_PKCS12SetPreferredCipher(long which, int on) |
| { |
| /* nothing looked at the preferences in the suite maps, so this function |
| * has always been a noop */ |
| return SECSuccess; |
| } |