Add the nss/lib/pkcs12 directory from NSS (Mozilla's Network Security Services) to third_party. Th…

nss_pkcs12/p12plcy.c

Index: nss_pkcs12/p12plcy.c
===================================================================
--- nss_pkcs12/p12plcy.c	(revision 0)
+++ nss_pkcs12/p12plcy.c	(revision 0)
@@ -0,0 +1,125 @@
+/* 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" 
+
+#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_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 */
+PRBool 
+SEC_PKCS12DecryptionAllowed(SECAlgorithmID *algid)
+{
+    unsigned int keyLengthBits;
+    SECOidTag algId;
+    int i;
+   
+    algId = SEC_PKCS5GetCryptoAlgorithm(algid);
+    if(algId == SEC_OID_UNKNOWN) {
+	return PR_FALSE;
+    }
+    
+    keyLengthBits = (unsigned int)(SEC_PKCS5GetKeyLength(algid) * 8);
+
+    i = 0;
+    while(pkcs12SuiteMaps[i].algTag != SEC_OID_UNKNOWN) {
+	if((pkcs12SuiteMaps[i].algTag == algId) && 
+	   (pkcs12SuiteMaps[i].keyLengthBits == keyLengthBits)) {
+
+	    return pkcs12SuiteMaps[i].allowed;
+	}
+	i++;
+    }
+
+    return PR_FALSE;
+}
+
+/* is any encryption allowed? */
+PRBool
+SEC_PKCS12IsEncryptionAllowed(void)
+{
+    int i;
+
+    i = 0;
+    while(pkcs12SuiteMaps[i].algTag != SEC_OID_UNKNOWN) {
+	if(pkcs12SuiteMaps[i].allowed == PR_TRUE) {
+	    return PR_TRUE;
+	} 
+	i++;
+    }
+
+    return PR_FALSE;
+}
+
+
+SECStatus
+SEC_PKCS12EnableCipher(long which, int on) 
+{
+    int i;
+
+    i = 0;
+    while(pkcs12SuiteMaps[i].suite != 0L) {
+	if(pkcs12SuiteMaps[i].suite == (unsigned long)which) {
+	    if(on) {
+		pkcs12SuiteMaps[i].allowed = PR_TRUE;
+	    } else {
+		pkcs12SuiteMaps[i].allowed = PR_FALSE;
+	    }
+	    return SECSuccess;
+	}
+	i++;
+    }
+
+    return SECFailure;
+}
+
+SECStatus
+SEC_PKCS12SetPreferredCipher(long which, int on)
+{
+    int i;
+    PRBool turnedOff = PR_FALSE;
+    PRBool turnedOn = PR_FALSE;
+
+    i = 0;
+    while(pkcs12SuiteMaps[i].suite != 0L) {
+	if(pkcs12SuiteMaps[i].preferred == PR_TRUE) {
+	    pkcs12SuiteMaps[i].preferred = PR_FALSE;
+	    turnedOff = PR_TRUE;
+	}
+	if(pkcs12SuiteMaps[i].suite == (unsigned long)which) {
+	    pkcs12SuiteMaps[i].preferred = PR_TRUE;
+	    turnedOn = PR_TRUE;
+	}
+	i++;
+    }
+
+    if((turnedOn) && (turnedOff)) {
+	return SECSuccess;
+    }
+
+    return SECFailure;
+}
+