Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 382 insertions, 0 deletions

diff --git a/comm/third_party/libgcrypt/cipher/idea.c b/comm/third_party/libgcrypt/cipher/idea.c
new file mode 100644
index 0000000000..0a81081810
--- /dev/null
+++ b/comm/third_party/libgcrypt/cipher/idea.c
@@ -0,0 +1,382 @@
+/* idea.c  -  IDEA function
+ * Copyright 1997, 1998, 1999, 2001 Werner Koch (dd9jn)
+ * Copyright 2013 g10 Code GmbH
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * WERNER KOCH BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Werner Koch shall not be
+ * used in advertising or otherwise to promote the sale, use or other dealings
+ * in this Software without prior written authorization from Werner Koch.
+ *
+ * Patents on IDEA have expired:
+ *   Europe: EP0482154 on 2011-05-16,
+ *   Japan:  JP3225440 on 2011-05-16,
+ *   U.S.:   5,214,703 on 2012-01-07.
+ */
+
+/*
+ * Please see http://www.noepatents.org/ to learn why software patents
+ * are bad for society and what you can do to fight them.
+ *
+ * The code herein is based on the one from:
+ *   Bruce Schneier: Applied Cryptography. John Wiley & Sons, 1996.
+ *   ISBN 0-471-11709-9.
+ */
+
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "types.h"  /* for byte and u32 typedefs */
+#include "g10lib.h"
+#include "cipher.h"
+#include "cipher-internal.h"
+
+
+#define IDEA_KEYSIZE 16
+#define IDEA_BLOCKSIZE 8
+#define IDEA_ROUNDS 8
+#define IDEA_KEYLEN (6*IDEA_ROUNDS+4)
+
+typedef struct {
+    u16 ek[IDEA_KEYLEN];
+    u16 dk[IDEA_KEYLEN];
+    int have_dk;
+} IDEA_context;
+
+static const char *selftest(void);
+
+
+static u16
+mul_inv( u16 x )
+{
+    u16 t0, t1;
+    u16 q, y;
+
+    if( x < 2 )
+	return x;
+    t1 = 0x10001UL / x;
+    y =  0x10001UL % x;
+    if( y == 1 )
+	return (1-t1) & 0xffff;
+
+    t0 = 1;
+    do {
+	q = x / y;
+	x = x % y;
+	t0 += q * t1;
+	if( x == 1 )
+	    return t0;
+	q = y / x;
+	y = y % x;
+	t1 += q * t0;
+    } while( y != 1 );
+    return (1-t1) & 0xffff;
+}
+
+
+
+static void
+expand_key( const byte *userkey, u16 *ek )
+{
+    int i,j;
+
+    for(j=0; j < 8; j++ ) {
+	ek[j] = (*userkey << 8) + userkey[1];
+	userkey += 2;
+    }
+    for(i=0; j < IDEA_KEYLEN; j++ ) {
+	i++;
+	ek[i+7] = ek[i&7] << 9 | ek[(i+1)&7] >> 7;
+	ek += i & 8;
+	i &= 7;
+    }
+}
+
+
+static void
+invert_key( u16 *ek, u16 dk[IDEA_KEYLEN] )
+{
+    int i;
+    u16 t1, t2, t3;
+    u16 temp[IDEA_KEYLEN];
+    u16 *p = temp + IDEA_KEYLEN;
+
+    t1 = mul_inv( *ek++ );
+    t2 = -*ek++;
+    t3 = -*ek++;
+    *--p = mul_inv( *ek++ );
+    *--p = t3;
+    *--p = t2;
+    *--p = t1;
+
+    for(i=0; i < IDEA_ROUNDS-1; i++ ) {
+	t1 = *ek++;
+	*--p = *ek++;
+	*--p = t1;
+
+	t1 = mul_inv( *ek++ );
+	t2 = -*ek++;
+	t3 = -*ek++;
+	*--p = mul_inv( *ek++ );
+	*--p = t2;
+	*--p = t3;
+	*--p = t1;
+    }
+    t1 = *ek++;
+    *--p = *ek++;
+    *--p = t1;
+
+    t1 = mul_inv( *ek++ );
+    t2 = -*ek++;
+    t3 = -*ek++;
+    *--p = mul_inv( *ek++ );
+    *--p = t3;
+    *--p = t2;
+    *--p = t1;
+    memcpy(dk, temp, sizeof(temp) );
+    wipememory(temp, sizeof(temp));
+}
+
+
+static void
+cipher( byte *outbuf, const byte *inbuf, u16 *key )
+{
+    u16 s2, s3;
+    u16 in[4];
+    int r = IDEA_ROUNDS;
+#define x1 (in[0])
+#define x2 (in[1])
+#define x3 (in[2])
+#define x4 (in[3])
+#define MUL(x,y) \
+	do {u16 _t16; u32 _t32; 		    \
+	    if( (_t16 = (y)) ) {		    \
+		if( (x = (x)&0xffff) ) {	    \
+		    _t32 = (u32)x * _t16;	    \
+		    x = _t32 & 0xffff;		    \
+		    _t16 = _t32 >> 16;		    \
+		    x = ((x)-_t16) + (x<_t16?1:0);  \
+		}				    \
+		else {				    \
+		    x = 1 - _t16;		    \
+		}				    \
+	    }					    \
+	    else {				    \
+		x = 1 - x;			    \
+	    }					    \
+	} while(0)
+
+    memcpy (in, inbuf, sizeof in);
+#ifndef WORDS_BIGENDIAN
+    x1 = (x1>>8) | (x1<<8);
+    x2 = (x2>>8) | (x2<<8);
+    x3 = (x3>>8) | (x3<<8);
+    x4 = (x4>>8) | (x4<<8);
+#endif
+    do {
+	MUL(x1, *key++);
+	x2 += *key++;
+	x3 += *key++;
+	MUL(x4, *key++ );
+
+	s3 = x3;
+	x3 ^= x1;
+	MUL(x3, *key++);
+	s2 = x2;
+	x2 ^=x4;
+	x2 += x3;
+	MUL(x2, *key++);
+	x3 += x2;
+
+	x1 ^= x2;
+	x4 ^= x3;
+
+	x2 ^= s3;
+	x3 ^= s2;
+    } while( --r );
+    MUL(x1, *key++);
+    x3 += *key++;
+    x2 += *key++;
+    MUL(x4, *key);
+
+#ifndef WORDS_BIGENDIAN
+    x1 = (x1>>8) | (x1<<8);
+    x2 = (x2>>8) | (x2<<8);
+    x3 = (x3>>8) | (x3<<8);
+    x4 = (x4>>8) | (x4<<8);
+#endif
+    memcpy (outbuf+0, &x1, 2);
+    memcpy (outbuf+2, &x3, 2);
+    memcpy (outbuf+4, &x2, 2);
+    memcpy (outbuf+6, &x4, 2);
+#undef MUL
+#undef x1
+#undef x2
+#undef x3
+#undef x4
+}
+
+
+static int
+do_setkey( IDEA_context *c, const byte *key, unsigned int keylen )
+{
+    static int initialized = 0;
+    static const char *selftest_failed = 0;
+
+    if( !initialized ) {
+	initialized = 1;
+	selftest_failed = selftest();
+	if( selftest_failed )
+	    log_error( "%s\n", selftest_failed );
+    }
+    if( selftest_failed )
+	return GPG_ERR_SELFTEST_FAILED;
+
+    assert(keylen == 16);
+    c->have_dk = 0;
+    expand_key( key, c->ek );
+    invert_key( c->ek, c->dk );
+    return 0;
+}
+
+static gcry_err_code_t
+idea_setkey (void *context, const byte *key, unsigned int keylen,
+             cipher_bulk_ops_t *bulk_ops)
+{
+    IDEA_context *ctx = context;
+    int rc = do_setkey (ctx, key, keylen);
+    (void)bulk_ops;
+    _gcry_burn_stack (23+6*sizeof(void*));
+    return rc;
+}
+
+static void
+encrypt_block( IDEA_context *c, byte *outbuf, const byte *inbuf )
+{
+    cipher( outbuf, inbuf, c->ek );
+}
+
+static unsigned int
+idea_encrypt (void *context, byte *out, const byte *in)
+{
+    IDEA_context *ctx = context;
+    encrypt_block (ctx, out, in);
+    return /*burn_stack*/ (24+3*sizeof (void*));
+}
+
+static void
+decrypt_block( IDEA_context *c, byte *outbuf, const byte *inbuf )
+{
+    if( !c->have_dk ) {
+       c->have_dk = 1;
+       invert_key( c->ek, c->dk );
+    }
+    cipher( outbuf, inbuf, c->dk );
+}
+
+static unsigned int
+idea_decrypt (void *context, byte *out, const byte *in)
+{
+    IDEA_context *ctx = context;
+    decrypt_block (ctx, out, in);
+    return /*burn_stack*/ (24+3*sizeof (void*));
+}
+
+
+static const char *
+selftest( void )
+{
+static struct {
+    byte key[16];
+    byte plain[8];
+    byte cipher[8];
+} test_vectors[] = {
+    { { 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04,
+	0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08 },
+      { 0x00, 0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x03 },
+      { 0x11, 0xFB, 0xED, 0x2B, 0x01, 0x98, 0x6D, 0xE5 } },
+    { { 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04,
+	0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08 },
+      { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 },
+      { 0x54, 0x0E, 0x5F, 0xEA, 0x18, 0xC2, 0xF8, 0xB1 } },
+    { { 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04,
+	0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08 },
+      { 0x00, 0x19, 0x32, 0x4B, 0x64, 0x7D, 0x96, 0xAF },
+      { 0x9F, 0x0A, 0x0A, 0xB6, 0xE1, 0x0C, 0xED, 0x78 } },
+    { { 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04,
+	0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08 },
+      { 0xF5, 0x20, 0x2D, 0x5B, 0x9C, 0x67, 0x1B, 0x08 },
+      { 0xCF, 0x18, 0xFD, 0x73, 0x55, 0xE2, 0xC5, 0xC5 } },
+    { { 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04,
+	0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08 },
+      { 0xFA, 0xE6, 0xD2, 0xBE, 0xAA, 0x96, 0x82, 0x6E },
+      { 0x85, 0xDF, 0x52, 0x00, 0x56, 0x08, 0x19, 0x3D } },
+    { { 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04,
+	0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08 },
+      { 0x0A, 0x14, 0x1E, 0x28, 0x32, 0x3C, 0x46, 0x50 },
+      { 0x2F, 0x7D, 0xE7, 0x50, 0x21, 0x2F, 0xB7, 0x34 } },
+    { { 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04,
+	0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08 },
+      { 0x05, 0x0A, 0x0F, 0x14, 0x19, 0x1E, 0x23, 0x28 },
+      { 0x7B, 0x73, 0x14, 0x92, 0x5D, 0xE5, 0x9C, 0x09 } },
+    { { 0x00, 0x05, 0x00, 0x0A, 0x00, 0x0F, 0x00, 0x14,
+	0x00, 0x19, 0x00, 0x1E, 0x00, 0x23, 0x00, 0x28 },
+      { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 },
+      { 0x3E, 0xC0, 0x47, 0x80, 0xBE, 0xFF, 0x6E, 0x20 } },
+    { { 0x3A, 0x98, 0x4E, 0x20, 0x00, 0x19, 0x5D, 0xB3,
+	0x2E, 0xE5, 0x01, 0xC8, 0xC4, 0x7C, 0xEA, 0x60 },
+      { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 },
+      { 0x97, 0xBC, 0xD8, 0x20, 0x07, 0x80, 0xDA, 0x86 } },
+    { { 0x00, 0x64, 0x00, 0xC8, 0x01, 0x2C, 0x01, 0x90,
+	0x01, 0xF4, 0x02, 0x58, 0x02, 0xBC, 0x03, 0x20 },
+      { 0x05, 0x32, 0x0A, 0x64, 0x14, 0xC8, 0x19, 0xFA },
+      { 0x65, 0xBE, 0x87, 0xE7, 0xA2, 0x53, 0x8A, 0xED } },
+    { { 0x9D, 0x40, 0x75, 0xC1, 0x03, 0xBC, 0x32, 0x2A,
+	0xFB, 0x03, 0xE7, 0xBE, 0x6A, 0xB3, 0x00, 0x06 },
+      { 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08 },
+      { 0xF5, 0xDB, 0x1A, 0xC4, 0x5E, 0x5E, 0xF9, 0xF9 } }
+};
+    IDEA_context c;
+    byte buffer[8];
+    int i;
+
+    for(i=0; i < DIM(test_vectors); i++ ) {
+	do_setkey( &c, test_vectors[i].key, 16 );
+	encrypt_block( &c, buffer, test_vectors[i].plain );
+	if( memcmp( buffer, test_vectors[i].cipher, 8 ) )
+	    return "IDEA test encryption failed.";
+	decrypt_block( &c, buffer, test_vectors[i].cipher );
+	if( memcmp( buffer, test_vectors[i].plain, 8 ) )
+	    return "IDEA test decryption failed.";
+    }
+
+    return NULL;
+}
+
+
+gcry_cipher_spec_t _gcry_cipher_spec_idea =
+  {
+    GCRY_CIPHER_IDEA, {0, 0},
+    "IDEA", NULL, NULL, IDEA_BLOCKSIZE, 128,
+    sizeof (IDEA_context),
+    idea_setkey, idea_encrypt, idea_decrypt
+  };