Delete bundled copy of NSS and replace with README.

nss/lib/pk11wrap/pk11sdr.c

Index: nss/lib/pk11wrap/pk11sdr.c
diff --git a/nss/lib/pk11wrap/pk11sdr.c b/nss/lib/pk11wrap/pk11sdr.c
deleted file mode 100644
index 43030b6d8c0e52850fc28cfbb64133f2fe4e049a..0000000000000000000000000000000000000000
--- a/nss/lib/pk11wrap/pk11sdr.c
+++ /dev/null
@@ -1,377 +0,0 @@
-/* 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 "seccomon.h"
-#include "secoid.h"
-#include "secasn1.h"
-#include "pkcs11.h"
-#include "pk11func.h"
-#include "pk11sdr.h"
-
-/*
- * Data structure and template for encoding the result of an SDR operation
- *  This is temporary.  It should include the algorithm ID of the encryption mechanism
- */
-struct SDRResult
-{
-  SECItem keyid;
-  SECAlgorithmID alg;
-  SECItem data;
-};
-typedef struct SDRResult SDRResult;
-
-SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)
-
-static SEC_ASN1Template template[] = {
-  { SEC_ASN1_SEQUENCE, 0, NULL, sizeof (SDRResult) },
-  { SEC_ASN1_OCTET_STRING, offsetof(SDRResult, keyid) },
-  { SEC_ASN1_INLINE | SEC_ASN1_XTRN, offsetof(SDRResult, alg),
-    SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
-  { SEC_ASN1_OCTET_STRING, offsetof(SDRResult, data) },
-  { 0 }
-};
-
-static unsigned char keyID[] = {
-  0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01
-};
-
-static SECItem keyIDItem = {
-  0,
-  keyID,
-  sizeof keyID
-};
-
-/* local utility function for padding an incoming data block
- * to the mechanism block size.
- */
-static SECStatus
-padBlock(SECItem *data, int blockSize, SECItem *result)
-{
-  SECStatus rv = SECSuccess;
-  int padLength;
-  unsigned int i;
-
-  result->data = 0;
-  result->len = 0;
-
-  /* This algorithm always adds to the block (to indicate the number
-   * of pad bytes).  So allocate a block large enough.
-   */
-  padLength = blockSize - (data->len % blockSize);
-  result->len = data->len + padLength;
-  result->data = (unsigned char *)PORT_Alloc(result->len);
-
-  /* Copy the data */
-  PORT_Memcpy(result->data, data->data, data->len);
-
-  /* Add the pad values */
-  for(i = data->len; i < result->len; i++)
-    result->data[i] = (unsigned char)padLength;
-
-  return rv;
-}
-
-static SECStatus
-unpadBlock(SECItem *data, int blockSize, SECItem *result)
-{
-  SECStatus rv = SECSuccess;
-  int padLength;
-  unsigned int i;
-
-  result->data = 0;
-  result->len = 0;
-
-  /* Remove the padding from the end if the input data */
-  if (data->len == 0 || data->len % blockSize  != 0) { rv = SECFailure; goto loser; }
-
-  padLength = data->data[data->len-1];
-  if (padLength > blockSize) { rv = SECFailure; goto loser; }
-
-  /* verify padding */
-  for (i=data->len - padLength; i < data->len; i++) {
-    if (data->data[i] != padLength) {
-	rv = SECFailure;
-	goto loser;
-    }
-  }
-
-  result->len = data->len - padLength;
-  result->data = (unsigned char *)PORT_Alloc(result->len);
-  if (!result->data) { rv = SECFailure; goto loser; }
-
-  PORT_Memcpy(result->data, data->data, result->len);
-
-  if (padLength < 2) {
-    return SECWouldBlock;
-  }
-
-loser:
-  return rv;
-}
-
-static PRLock *pk11sdrLock = NULL;
-
-void
-pk11sdr_Init (void)
-{
-   pk11sdrLock = PR_NewLock();
-}
-
-void
-pk11sdr_Shutdown(void)
-{
-    if (pk11sdrLock) {
-	PR_DestroyLock(pk11sdrLock);
-	pk11sdrLock = NULL;
-    }
-}
-
-/*
- * PK11SDR_Encrypt
- *  Encrypt a block of data using the symmetric key identified.  The result
- *  is an ASN.1 (DER) encoded block of keyid, params and data.
- */
-SECStatus
-PK11SDR_Encrypt(SECItem *keyid, SECItem *data, SECItem *result, void *cx)
-{
-  SECStatus rv = SECSuccess;
-  PK11SlotInfo *slot = 0;
-  PK11SymKey *key = 0;
-  SECItem *params = 0;
-  PK11Context *ctx = 0;
-  CK_MECHANISM_TYPE type;
-  SDRResult sdrResult;
-  SECItem paddedData;
-  SECItem *pKeyID;
-  PLArenaPool *arena = 0;
-
-  /* Initialize */
-  paddedData.len = 0;
-  paddedData.data = 0;
-
-  arena = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
-  if (!arena) { rv = SECFailure; goto loser; }
-
-  /* 1. Locate the requested keyid, or the default key (which has a keyid)
-   * 2. Create an encryption context
-   * 3. Encrypt
-   * 4. Encode the results (using ASN.1)
-   */
-
-  slot = PK11_GetInternalKeySlot();
-  if (!slot) { rv = SECFailure; goto loser; }
-
-  /* Use triple-DES */
-  type = CKM_DES3_CBC;
-
-  /*
-   * Login to the internal token before we look for the key, otherwise we
-   * won't find it.
-   */
-  rv = PK11_Authenticate(slot, PR_TRUE, cx);
-  if (rv != SECSuccess) goto loser;
-
-  /* Find the key to use */
-  pKeyID = keyid;
-  if (pKeyID->len == 0) {
-	  pKeyID = &keyIDItem;  /* Use default value */
-
-	  /* put in a course lock to prevent a race between not finding the 
-	   * key and creating  one.
-	   */
-
-	  if (pk11sdrLock) PR_Lock(pk11sdrLock);
-
-	  /* Try to find the key */
-	  key = PK11_FindFixedKey(slot, type, pKeyID, cx);
-	  
-	  /* If the default key doesn't exist yet, try to create it */
-	  if (!key) key = PK11_GenDES3TokenKey(slot, pKeyID, cx);
-	  if (pk11sdrLock) PR_Unlock(pk11sdrLock);
-  } else {
-	  key = PK11_FindFixedKey(slot, type, pKeyID, cx);
-  }
-
-  if (!key) { rv = SECFailure; goto loser; }
-
-  params = PK11_GenerateNewParam(type, key);
-  if (!params) { rv = SECFailure; goto loser; }
-
-  ctx = PK11_CreateContextBySymKey(type, CKA_ENCRYPT, key, params);
-  if (!ctx) { rv = SECFailure; goto loser; }
-
-  rv = padBlock(data, PK11_GetBlockSize(type, 0), &paddedData);
-  if (rv != SECSuccess) goto loser;
-
-  sdrResult.data.len = paddedData.len;
-  sdrResult.data.data = (unsigned char *)PORT_ArenaAlloc(arena, sdrResult.data.len);
-
-  rv = PK11_CipherOp(ctx, sdrResult.data.data, (int*)&sdrResult.data.len, sdrResult.data.len,
-                     paddedData.data, paddedData.len);
-  if (rv != SECSuccess) goto loser;
-
-  PK11_Finalize(ctx);
-
-  sdrResult.keyid = *pKeyID;
-
-  rv = PK11_ParamToAlgid(SEC_OID_DES_EDE3_CBC, params, arena, &sdrResult.alg);
-  if (rv != SECSuccess) goto loser;
-
-  if (!SEC_ASN1EncodeItem(0, result, &sdrResult, template)) { rv = SECFailure; goto loser; }
-
-loser:
-  SECITEM_ZfreeItem(&paddedData, PR_FALSE);
-  if (arena) PORT_FreeArena(arena, PR_TRUE);
-  if (ctx) PK11_DestroyContext(ctx, PR_TRUE);
-  if (params) SECITEM_ZfreeItem(params, PR_TRUE);
-  if (key) PK11_FreeSymKey(key);
-  if (slot) PK11_FreeSlot(slot);
-
-  return rv;
-}
-
-/* decrypt a block */
-static SECStatus
-pk11Decrypt(PK11SlotInfo *slot, PLArenaPool *arena, 
-	    CK_MECHANISM_TYPE type, PK11SymKey *key, 
-	    SECItem *params, SECItem *in, SECItem *result)
-{
-  PK11Context *ctx = 0;
-  SECItem paddedResult;
-  SECStatus rv;
-
-  paddedResult.len = 0;
-  paddedResult.data = 0;
-
-  ctx = PK11_CreateContextBySymKey(type, CKA_DECRYPT, key, params);
-  if (!ctx) { rv = SECFailure; goto loser; }
-
-  paddedResult.len = in->len;
-  paddedResult.data = PORT_ArenaAlloc(arena, paddedResult.len);
-
-  rv = PK11_CipherOp(ctx, paddedResult.data, 
-			(int*)&paddedResult.len, paddedResult.len,
-			in->data, in->len);
-  if (rv != SECSuccess) goto loser;
-
-  PK11_Finalize(ctx);
-
-  /* Remove the padding */
-  rv = unpadBlock(&paddedResult, PK11_GetBlockSize(type, 0), result);
-  if (rv) goto loser;
-
-loser:
-  if (ctx) PK11_DestroyContext(ctx, PR_TRUE);
-  return rv;
-}
-
-/*
- * PK11SDR_Decrypt
- *  Decrypt a block of data produced by PK11SDR_Encrypt.  The key used is identified
- *  by the keyid field within the input.
- */
-SECStatus
-PK11SDR_Decrypt(SECItem *data, SECItem *result, void *cx)
-{
-  SECStatus rv = SECSuccess;
-  PK11SlotInfo *slot = 0;
-  PK11SymKey *key = 0;
-  CK_MECHANISM_TYPE type;
-  SDRResult sdrResult;
-  SECItem *params = 0;
-  SECItem possibleResult = { 0, NULL, 0 };
-  PLArenaPool *arena = 0;
-
-  arena = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE);
-  if (!arena) { rv = SECFailure; goto loser; }
-
-  /* Decode the incoming data */
-  memset(&sdrResult, 0, sizeof sdrResult);
-  rv = SEC_QuickDERDecodeItem(arena, &sdrResult, template, data);
-  if (rv != SECSuccess) goto loser;  /* Invalid format */
-
-  /* Find the slot and key for the given keyid */
-  slot = PK11_GetInternalKeySlot();
-  if (!slot) { rv = SECFailure; goto loser; }
-
-  rv = PK11_Authenticate(slot, PR_TRUE, cx);
-  if (rv != SECSuccess) goto loser;
-
-  /* Get the parameter values from the data */
-  params = PK11_ParamFromAlgid(&sdrResult.alg);
-  if (!params) { rv = SECFailure; goto loser; }
-
-  /* Use triple-DES (Should look up the algorithm) */
-  type = CKM_DES3_CBC;
-  key = PK11_FindFixedKey(slot, type, &sdrResult.keyid, cx);
-  if (!key) { 
-	rv = SECFailure;  
-  } else {
-	rv = pk11Decrypt(slot, arena, type, key, params, 
-			&sdrResult.data, result);
-  }
-
-  /*
-   * if the pad value was too small (1 or 2), then it's statistically
-   * 'likely' that (1 in 256) that we may not have the correct key.
-   * Check the other keys for a better match. If we find none, use
-   * this result.
-   */
-  if (rv == SECWouldBlock) {
-	possibleResult = *result;
-  }
-
-  /*
-   * handle the case where your key indicies may have been broken
-   */
-  if (rv != SECSuccess) {
-	PK11SymKey *keyList = PK11_ListFixedKeysInSlot(slot, NULL, cx);
-	PK11SymKey *testKey = NULL;
-	PK11SymKey *nextKey = NULL;
-
-	for (testKey = keyList; testKey; 
-				testKey = PK11_GetNextSymKey(testKey)) {
-	    rv = pk11Decrypt(slot, arena, type, testKey, params, 
-			     &sdrResult.data, result);
-	    if (rv == SECSuccess) {
-		break;
-	    } 
-	    /* found a close match. If it's our first remember it */
-	    if (rv == SECWouldBlock) {
-		if (possibleResult.data) {
-		    /* this is unlikely but possible. If we hit this condition,
-		     * we have no way of knowing which possibility to prefer.
-		     * in this case we just match the key the application
-		     * thought was the right one */
-		    SECITEM_ZfreeItem(result, PR_FALSE);
-		} else {
-		    possibleResult = *result;
-		}
-	    }
-	}
-
-	/* free the list */
-	for (testKey = keyList; testKey; testKey = nextKey) {
-	    nextKey = PK11_GetNextSymKey(testKey);
-	    PK11_FreeSymKey(testKey);
-	}
-  }
-
-  /* we didn't find a better key, use the one with a small pad value */
-  if ((rv != SECSuccess) && (possibleResult.data)) {
-	*result = possibleResult;
-	possibleResult.data = NULL;
-	rv = SECSuccess;
-  }
-
-loser:
-  if (arena) PORT_FreeArena(arena, PR_TRUE);
-  if (key) PK11_FreeSymKey(key);
-  if (params) SECITEM_ZfreeItem(params, PR_TRUE);
-  if (slot) PK11_FreeSlot(slot);
-  if (possibleResult.data) SECITEM_ZfreeItem(&possibleResult, PR_FALSE);
-
-  return rv;
-}