rc2_skey.c

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rc2_skey.c

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/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/rc2/rc2_skey.c

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/* $OpenBSD: rc2_skey.c,v 1.12 2014/06/12 15:49:30 deraadt Exp $ */

* This package is an SSL implementation written

* by Eric Young (eay@cryptsoft.com).

* The implementation was written so as to conform with Netscapes SSL.

* This library is free for commercial and non-commercial use as long as

* the following conditions are aheared to. The following conditions

* apply to all code found in this distribution, be it the RC4, RSA,

* lhash, DES, etc., code; not just the SSL code. The SSL documentation

* included with this distribution is covered by the same copyright terms

* except that the holder is Tim Hudson (tjh@cryptsoft.com).

* Copyright remains Eric Young's, and as such any Copyright notices in

* the code are not to be removed.

* If this package is used in a product, Eric Young should be given attribution

* as the author of the parts of the library used.

* This can be in the form of a textual message at program startup or

* in documentation (online or textual) provided with the package.

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

* 1. Redistributions of source code must retain the copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

* 3. All advertising materials mentioning features or use of this software

* must display the following acknowledgement:

* "This product includes cryptographic software written by

* Eric Young (eay@cryptsoft.com)"

* The word 'cryptographic' can be left out if the rouines from the library

* being used are not cryptographic related :-).

* 4. If you include any Windows specific code (or a derivative thereof) from

* the apps directory (application code) you must include an acknowledgement:

* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

* SUCH DAMAGE.

* The licence and distribution terms for any publically available version or

* derivative of this code cannot be changed. i.e. this code cannot simply be

* copied and put under another distribution licence

* [including the GNU Public Licence.]

#include <openssl/crypto.h>

#include <openssl/rc2.h>

#include "rc2_locl.h"

static const unsigned char key_table[256]={

0xd9,0x78,0xf9,0xc4,0x19,0xdd,0xb5,0xed,0x28,0xe9,0xfd,0x79,

0x4a,0xa0,0xd8,0x9d,0xc6,0x7e,0x37,0x83,0x2b,0x76,0x53,0x8e,

0x62,0x4c,0x64,0x88,0x44,0x8b,0xfb,0xa2,0x17,0x9a,0x59,0xf5,

0x87,0xb3,0x4f,0x13,0x61,0x45,0x6d,0x8d,0x09,0x81,0x7d,0x32,

0xbd,0x8f,0x40,0xeb,0x86,0xb7,0x7b,0x0b,0xf0,0x95,0x21,0x22,

0x5c,0x6b,0x4e,0x82,0x54,0xd6,0x65,0x93,0xce,0x60,0xb2,0x1c,

0x73,0x56,0xc0,0x14,0xa7,0x8c,0xf1,0xdc,0x12,0x75,0xca,0x1f,

0x3b,0xbe,0xe4,0xd1,0x42,0x3d,0xd4,0x30,0xa3,0x3c,0xb6,0x26,

0x6f,0xbf,0x0e,0xda,0x46,0x69,0x07,0x57,0x27,0xf2,0x1d,0x9b,

0xbc,0x94,0x43,0x03,0xf8,0x11,0xc7,0xf6,0x90,0xef,0x3e,0xe7,

0x06,0xc3,0xd5,0x2f,0xc8,0x66,0x1e,0xd7,0x08,0xe8,0xea,0xde,

0x80,0x52,0xee,0xf7,0x84,0xaa,0x72,0xac,0x35,0x4d,0x6a,0x2a,

0x96,0x1a,0xd2,0x71,0x5a,0x15,0x49,0x74,0x4b,0x9f,0xd0,0x5e,

0x04,0x18,0xa4,0xec,0xc2,0xe0,0x41,0x6e,0x0f,0x51,0xcb,0xcc,

0x24,0x91,0xaf,0x50,0xa1,0xf4,0x70,0x39,0x99,0x7c,0x3a,0x85,

0x23,0xb8,0xb4,0x7a,0xfc,0x02,0x36,0x5b,0x25,0x55,0x97,0x31,

0x2d,0x5d,0xfa,0x98,0xe3,0x8a,0x92,0xae,0x05,0xdf,0x29,0x10,

0x67,0x6c,0xba,0xc9,0xd3,0x00,0xe6,0xcf,0xe1,0x9e,0xa8,0x2c,

0x63,0x16,0x01,0x3f,0x58,0xe2,0x89,0xa9,0x0d,0x38,0x34,0x1b,

0xab,0x33,0xff,0xb0,0xbb,0x48,0x0c,0x5f,0xb9,0xb1,0xcd,0x2e,

0xc5,0xf3,0xdb,0x47,0xe5,0xa5,0x9c,0x77,0x0a,0xa6,0x20,0x68,

0xfe,0x7f,0xc1,0xad,

};

/* It has come to my attention that there are 2 versions of the RC2

* key schedule. One which is normal, and anther which has a hook to

* use a reduced key length.

* BSAFE uses the 'retarded' version. What I previously shipped is

* the same as specifying 1024 for the 'bits' parameter. Bsafe uses

* a version where the bits parameter is the same as len*8 */

void RC2_set_key(RC2_KEY *key, int len, const unsigned char *data, int bits)

{

int i,j;

unsigned char *k;

RC2_INT *ki;

unsigned int c,d;

100

101

k= (unsigned char *)&(key->data[0]);

102

*k=0; /* for if there is a zero length key */

103

104

if (len > 128) len=128;

never executed: len=128;

len > 128	Description
TRUE	never evaluated
FALSE	evaluated 28 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

0-28

105

if (bits <= 0) bits=1024;

executed 4 times by 1 test: bits=1024;

Executed by:

rc2test

bits <= 0	Description
TRUE	evaluated 4 times by 1 test Evaluated by: rc2test
FALSE	evaluated 24 times by 1 test Evaluated by: libcrypto.so.44.0.1

4-24

106

if (bits > 1024) bits=1024;

never executed: bits=1024;

bits > 1024	Description
TRUE	never evaluated
FALSE	evaluated 28 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

0-28

107

108

for (i=0; i<len; i++)

i<len	Description
TRUE	evaluated 372 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test
FALSE	evaluated 28 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

28-372

109

k[i]=data[i];

executed 372 times by 2 tests: k[i]=data[i];

Executed by:

libcrypto.so.44.0.1
rc2test

372

/* expand table */

d=k[len-1];

j=0;

for (i=len; i < 128; i++,j++)

i < 128	Description
TRUE	evaluated 3212 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test
FALSE	evaluated 28 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

28-3212

115

{

116

d=key_table[(k[j]+d)&0xff];

117

k[i]=d;

118

}

executed 3212 times by 2 tests: end of block

Executed by:

libcrypto.so.44.0.1
rc2test

3212

119

120

/* hmm.... key reduction to 'bits' bits */

j=(bits+7)>>3;

i=128-j;

c= (0xff>>(-bits & 0x07));

d=key_table[k[i]&c];

k[i]=d;

while (i--)

i--	Description
TRUE	evaluated 2764 times by 1 test Evaluated by: libcrypto.so.44.0.1
FALSE	evaluated 28 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

28-2764

129

{

130

d=key_table[k[i+j]^d];

131

k[i]=d;

132

}

executed 2764 times by 1 test: end of block

Executed by:

libcrypto.so.44.0.1

2764

133

134

/* copy from bytes into RC2_INT's */

135

ki= &(key->data[63]);

136

for (i=127; i>=0; i-=2)

i>=0	Description
TRUE	evaluated 1792 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test
FALSE	evaluated 28 times by 2 tests Evaluated by: libcrypto.so.44.0.1 rc2test

28-1792

137

*(ki--)=((k[i]<<8)|k[i-1])&0xffff;

executed 1792 times by 2 tests: *(ki--)=((k[i]<<8)|k[i-1])&0xffff;

Executed by:

libcrypto.so.44.0.1
rc2test

1792

138

}

executed 28 times by 2 tests: end of block

Executed by:

libcrypto.so.44.0.1
rc2test

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