--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nss/lib/freebl/desblapi.c	Mon Jul 28 10:47:06 2014 +0200
@@ -0,0 +1,273 @@
+/*
+ *  desblapi.c
+ *
+ *  core source file for DES-150 library
+ *  Implement DES Modes of Operation and Triple-DES.
+ *  Adapt DES-150 to blapi API.
+ *
+ * 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/. */
+
+#ifdef FREEBL_NO_DEPEND
+#include "stubs.h"
+#endif
+
+#include "des.h"
+#include <stddef.h>
+#include "secerr.h"
+
+#if defined(NSS_X86_OR_X64)
+/* Intel X86 CPUs do unaligned loads and stores without complaint. */
+#define COPY8B(to, from, ptr) \
+    	HALFPTR(to)[0] = HALFPTR(from)[0]; \
+    	HALFPTR(to)[1] = HALFPTR(from)[1]; 
+#elif defined(USE_MEMCPY)
+#define COPY8B(to, from, ptr) memcpy(to, from, 8)
+#else
+#define COPY8B(to, from, ptr) \
+    if (((ptrdiff_t)(ptr) & 0x3) == 0) { \
+    	HALFPTR(to)[0] = HALFPTR(from)[0]; \
+    	HALFPTR(to)[1] = HALFPTR(from)[1]; \
+    } else if (((ptrdiff_t)(ptr) & 0x1) == 0) { \
+    	SHORTPTR(to)[0] = SHORTPTR(from)[0]; \
+    	SHORTPTR(to)[1] = SHORTPTR(from)[1]; \
+    	SHORTPTR(to)[2] = SHORTPTR(from)[2]; \
+    	SHORTPTR(to)[3] = SHORTPTR(from)[3]; \
+    } else { \
+    	BYTEPTR(to)[0] = BYTEPTR(from)[0]; \
+    	BYTEPTR(to)[1] = BYTEPTR(from)[1]; \
+    	BYTEPTR(to)[2] = BYTEPTR(from)[2]; \
+    	BYTEPTR(to)[3] = BYTEPTR(from)[3]; \
+    	BYTEPTR(to)[4] = BYTEPTR(from)[4]; \
+    	BYTEPTR(to)[5] = BYTEPTR(from)[5]; \
+    	BYTEPTR(to)[6] = BYTEPTR(from)[6]; \
+    	BYTEPTR(to)[7] = BYTEPTR(from)[7]; \
+    } 
+#endif
+#define COPY8BTOHALF(to, from) COPY8B(to, from, from)
+#define COPY8BFROMHALF(to, from) COPY8B(to, from, to)
+
+static void 
+DES_ECB(DESContext *cx, BYTE *out, const BYTE *in, unsigned int len)
+{
+    while (len) {
+	DES_Do1Block(cx->ks0, in, out);
+	len -= 8;
+	in  += 8;
+	out += 8;
+    }
+}
+
+static void 
+DES_EDE3_ECB(DESContext *cx, BYTE *out, const BYTE *in, unsigned int len)
+{
+    while (len) {
+	DES_Do1Block(cx->ks0,  in, out);
+	len -= 8;
+	in  += 8;
+	DES_Do1Block(cx->ks1, out, out);
+	DES_Do1Block(cx->ks2, out, out);
+	out += 8;
+    }
+}
+
+static void 
+DES_CBCEn(DESContext *cx, BYTE *out, const BYTE *in, unsigned int len)
+{
+    const BYTE * bufend = in + len;
+    HALF  vec[2];
+
+    while (in != bufend) {
+	COPY8BTOHALF(vec, in);
+	in += 8;
+	vec[0] ^= cx->iv[0];
+	vec[1] ^= cx->iv[1];
+	DES_Do1Block( cx->ks0, (BYTE *)vec, (BYTE *)cx->iv);
+	COPY8BFROMHALF(out, cx->iv);
+	out += 8;
+    }
+}
+
+static void 
+DES_CBCDe(DESContext *cx, BYTE *out, const BYTE *in, unsigned int len)
+{
+    const BYTE * bufend;
+    HALF oldciphertext[2];
+    HALF plaintext    [2];
+
+    for (bufend = in + len; in != bufend; ) {
+	oldciphertext[0] = cx->iv[0];
+	oldciphertext[1] = cx->iv[1];
+	COPY8BTOHALF(cx->iv, in);
+	in += 8;
+	DES_Do1Block(cx->ks0, (BYTE *)cx->iv, (BYTE *)plaintext);
+	plaintext[0] ^= oldciphertext[0];
+	plaintext[1] ^= oldciphertext[1];
+	COPY8BFROMHALF(out, plaintext);
+	out += 8;
+    }
+}
+
+static void 
+DES_EDE3CBCEn(DESContext *cx, BYTE *out, const BYTE *in, unsigned int len)
+{
+    const BYTE * bufend = in + len;
+    HALF  vec[2];
+
+    while (in != bufend) {
+	COPY8BTOHALF(vec, in);
+	in += 8;
+	vec[0] ^= cx->iv[0];
+	vec[1] ^= cx->iv[1];
+	DES_Do1Block( cx->ks0, (BYTE *)vec,    (BYTE *)cx->iv);
+	DES_Do1Block( cx->ks1, (BYTE *)cx->iv, (BYTE *)cx->iv);
+	DES_Do1Block( cx->ks2, (BYTE *)cx->iv, (BYTE *)cx->iv);
+	COPY8BFROMHALF(out, cx->iv);
+	out += 8;
+    }
+}
+
+static void 
+DES_EDE3CBCDe(DESContext *cx, BYTE *out, const BYTE *in, unsigned int len)
+{
+    const BYTE * bufend;
+    HALF oldciphertext[2];
+    HALF plaintext    [2];
+
+    for (bufend = in + len; in != bufend; ) {
+	oldciphertext[0] = cx->iv[0];
+	oldciphertext[1] = cx->iv[1];
+	COPY8BTOHALF(cx->iv, in);
+	in += 8;
+	DES_Do1Block(cx->ks0, (BYTE *)cx->iv,    (BYTE *)plaintext);
+	DES_Do1Block(cx->ks1, (BYTE *)plaintext, (BYTE *)plaintext);
+	DES_Do1Block(cx->ks2, (BYTE *)plaintext, (BYTE *)plaintext);
+	plaintext[0] ^= oldciphertext[0];
+	plaintext[1] ^= oldciphertext[1];
+	COPY8BFROMHALF(out, plaintext);
+	out += 8;
+    }
+}
+
+DESContext *
+DES_AllocateContext(void)
+{
+    return PORT_ZNew(DESContext);
+}
+
+SECStatus   
+DES_InitContext(DESContext *cx, const unsigned char *key, unsigned int keylen,
+	        const unsigned char *iv, int mode, unsigned int encrypt,
+	        unsigned int unused)
+{
+    DESDirection opposite;
+    if (!cx) {
+	PORT_SetError(SEC_ERROR_INVALID_ARGS);
+    	return SECFailure;
+    }
+    cx->direction = encrypt ? DES_ENCRYPT : DES_DECRYPT;
+    opposite      = encrypt ? DES_DECRYPT : DES_ENCRYPT;
+    switch (mode) {
+    case NSS_DES:	/* DES ECB */
+	DES_MakeSchedule( cx->ks0, key, cx->direction);
+	cx->worker = &DES_ECB;
+	break;
+
+    case NSS_DES_EDE3:	/* DES EDE ECB */
+	cx->worker = &DES_EDE3_ECB;
+	if (encrypt) {
+	    DES_MakeSchedule(cx->ks0, key,      cx->direction);
+	    DES_MakeSchedule(cx->ks1, key +  8, opposite);
+	    DES_MakeSchedule(cx->ks2, key + 16, cx->direction);
+	} else {
+	    DES_MakeSchedule(cx->ks2, key,      cx->direction);
+	    DES_MakeSchedule(cx->ks1, key +  8, opposite);
+	    DES_MakeSchedule(cx->ks0, key + 16, cx->direction);
+	}
+	break;
+
+    case NSS_DES_CBC:	/* DES CBC */
+	COPY8BTOHALF(cx->iv, iv);
+	cx->worker = encrypt ? &DES_CBCEn : &DES_CBCDe;
+	DES_MakeSchedule(cx->ks0, key, cx->direction);
+	break;
+
+    case NSS_DES_EDE3_CBC:	/* DES EDE CBC */
+	COPY8BTOHALF(cx->iv, iv);
+	if (encrypt) {
+	    cx->worker = &DES_EDE3CBCEn;
+	    DES_MakeSchedule(cx->ks0, key,      cx->direction);
+	    DES_MakeSchedule(cx->ks1, key +  8, opposite);
+	    DES_MakeSchedule(cx->ks2, key + 16, cx->direction);
+	} else {
+	    cx->worker = &DES_EDE3CBCDe;
+	    DES_MakeSchedule(cx->ks2, key,      cx->direction);
+	    DES_MakeSchedule(cx->ks1, key +  8, opposite);
+	    DES_MakeSchedule(cx->ks0, key + 16, cx->direction);
+	}
+	break;
+
+    default:
+	PORT_SetError(SEC_ERROR_INVALID_ARGS);
+	return SECFailure;
+    }
+    return SECSuccess;
+}
+
+DESContext *
+DES_CreateContext(const BYTE * key, const BYTE *iv, int mode, PRBool encrypt)
+{
+    DESContext *cx = PORT_ZNew(DESContext);
+    SECStatus rv   = DES_InitContext(cx, key, 0, iv, mode, encrypt, 0);
+
+    if (rv != SECSuccess) {
+    	PORT_ZFree(cx, sizeof *cx);
+	cx = NULL;
+    }
+    return cx;
+}
+
+void
+DES_DestroyContext(DESContext *cx, PRBool freeit)
+{
+    if (cx) {
+    	memset(cx, 0, sizeof *cx);
+	if (freeit)
+	    PORT_Free(cx);
+    }
+}
+
+SECStatus
+DES_Encrypt(DESContext *cx, BYTE *out, unsigned int *outLen,
+            unsigned int maxOutLen, const BYTE *in, unsigned int inLen)
+{
+
+    if ((inLen % 8) != 0 || maxOutLen < inLen || !cx || 
+        cx->direction != DES_ENCRYPT) {
+    	PORT_SetError(SEC_ERROR_INVALID_ARGS);
+	return SECFailure;
+    }
+
+    cx->worker(cx, out, in, inLen);
+    if (outLen)
+	*outLen = inLen;
+    return SECSuccess;
+}
+
+SECStatus
+DES_Decrypt(DESContext *cx, BYTE *out, unsigned int *outLen,
+            unsigned int maxOutLen, const BYTE *in, unsigned int inLen)
+{
+
+    if ((inLen % 8) != 0 || maxOutLen < inLen || !cx || 
+        cx->direction != DES_DECRYPT) {
+    	PORT_SetError(SEC_ERROR_INVALID_ARGS);
+	return SECFailure;
+    }
+
+    cx->worker(cx, out, in, inLen);
+    if (outLen)
+	*outLen = inLen;
+    return SECSuccess;
+}