[thirdparty/openssl.git] / crypto / evp / e_des3.c

/*
 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>
#include "internal/cryptlib.h"
#ifndef OPENSSL_NO_DES
# include <openssl/evp.h>
# include <openssl/objects.h>
# include "internal/evp_int.h"
# include <openssl/des.h>
# include <openssl/rand.h>
# include <openssl/rand_drbg.h>
# include "evp_locl.h"

typedef struct {
    union {
        double align;
        DES_key_schedule ks[3];
    } ks;
    union {
        void (*cbc) (const void *, void *, size_t,
                     const DES_key_schedule *, unsigned char *);
    } stream;
} DES_EDE_KEY;
# define ks1 ks.ks[0]
# define ks2 ks.ks[1]
# define ks3 ks.ks[2]

# if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
/* ---------^^^ this is not a typo, just a way to detect that
 * assembler support was in general requested... */
#  include "sparc_arch.h"

extern unsigned int OPENSSL_sparcv9cap_P[];

#  define SPARC_DES_CAPABLE       (OPENSSL_sparcv9cap_P[1] & CFR_DES)

void des_t4_key_expand(const void *key, DES_key_schedule *ks);
void des_t4_ede3_cbc_encrypt(const void *inp, void *out, size_t len,
                             const DES_key_schedule ks[3], unsigned char iv[8]);
void des_t4_ede3_cbc_decrypt(const void *inp, void *out, size_t len,
                             const DES_key_schedule ks[3], unsigned char iv[8]);
# endif

static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
                            const unsigned char *iv, int enc);

static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
                             const unsigned char *iv, int enc);

static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);

# define data(ctx) EVP_C_DATA(DES_EDE_KEY,ctx)

/*
 * Because of various casts and different args can't use
 * IMPLEMENT_BLOCK_CIPHER
 */

static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                              const unsigned char *in, size_t inl)
{
    BLOCK_CIPHER_ecb_loop()
        DES_ecb3_encrypt((const_DES_cblock *)(in + i),
                         (DES_cblock *)(out + i),
                         &data(ctx)->ks1, &data(ctx)->ks2,
                         &data(ctx)->ks3, EVP_CIPHER_CTX_encrypting(ctx));
    return 1;
}

static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                              const unsigned char *in, size_t inl)
{
    while (inl >= EVP_MAXCHUNK) {
        int num = EVP_CIPHER_CTX_num(ctx);
        DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
                               &data(ctx)->ks1, &data(ctx)->ks2,
                               &data(ctx)->ks3,
                               (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
                               &num);
        EVP_CIPHER_CTX_set_num(ctx, num);
        inl -= EVP_MAXCHUNK;
        in += EVP_MAXCHUNK;
        out += EVP_MAXCHUNK;
    }
    if (inl) {
        int num = EVP_CIPHER_CTX_num(ctx);
        DES_ede3_ofb64_encrypt(in, out, (long)inl,
                               &data(ctx)->ks1, &data(ctx)->ks2,
                               &data(ctx)->ks3,
                               (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
                               &num);
        EVP_CIPHER_CTX_set_num(ctx, num);
    }
    return 1;
}

static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                              const unsigned char *in, size_t inl)
{
    DES_EDE_KEY *dat = data(ctx);

    if (dat->stream.cbc != NULL) {
        (*dat->stream.cbc) (in, out, inl, dat->ks.ks,
                            EVP_CIPHER_CTX_iv_noconst(ctx));
        return 1;
    }

    while (inl >= EVP_MAXCHUNK) {
        DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
                             &dat->ks1, &dat->ks2, &dat->ks3,
                             (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
                             EVP_CIPHER_CTX_encrypting(ctx));
        inl -= EVP_MAXCHUNK;
        in += EVP_MAXCHUNK;
        out += EVP_MAXCHUNK;
    }
    if (inl)
        DES_ede3_cbc_encrypt(in, out, (long)inl,
                             &dat->ks1, &dat->ks2, &dat->ks3,
                             (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
                             EVP_CIPHER_CTX_encrypting(ctx));
    return 1;
}

static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                                const unsigned char *in, size_t inl)
{
    while (inl >= EVP_MAXCHUNK) {
        int num = EVP_CIPHER_CTX_num(ctx);
        DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
                               &data(ctx)->ks1, &data(ctx)->ks2,
                               &data(ctx)->ks3,
                               (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
                               &num, EVP_CIPHER_CTX_encrypting(ctx));
        EVP_CIPHER_CTX_set_num(ctx, num);
        inl -= EVP_MAXCHUNK;
        in += EVP_MAXCHUNK;
        out += EVP_MAXCHUNK;
    }
    if (inl) {
        int num = EVP_CIPHER_CTX_num(ctx);
        DES_ede3_cfb64_encrypt(in, out, (long)inl,
                               &data(ctx)->ks1, &data(ctx)->ks2,
                               &data(ctx)->ks3,
                               (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
                               &num, EVP_CIPHER_CTX_encrypting(ctx));
        EVP_CIPHER_CTX_set_num(ctx, num);
    }
    return 1;
}

/*
 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
 * right way, so wrap it here
 */
static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                                const unsigned char *in, size_t inl)
{
    size_t n;
    unsigned char c[1], d[1];

    if (!EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
            inl *= 8;
    for (n = 0; n < inl; ++n) {
        c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
        DES_ede3_cfb_encrypt(c, d, 1, 1,
                             &data(ctx)->ks1, &data(ctx)->ks2,
                             &data(ctx)->ks3,
                             (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
                             EVP_CIPHER_CTX_encrypting(ctx));
        out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
            | ((d[0] & 0x80) >> (unsigned int)(n % 8));
    }

    return 1;
}

static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                                const unsigned char *in, size_t inl)
{
    while (inl >= EVP_MAXCHUNK) {
        DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
                             &data(ctx)->ks1, &data(ctx)->ks2,
                             &data(ctx)->ks3,
                             (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
                             EVP_CIPHER_CTX_encrypting(ctx));
        inl -= EVP_MAXCHUNK;
        in += EVP_MAXCHUNK;
        out += EVP_MAXCHUNK;
    }
    if (inl)
        DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
                             &data(ctx)->ks1, &data(ctx)->ks2,
                             &data(ctx)->ks3,
                             (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
                             EVP_CIPHER_CTX_encrypting(ctx));
    return 1;
}

BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
                  EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
                  des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
# define des_ede3_cfb64_cipher des_ede_cfb64_cipher
# define des_ede3_ofb_cipher des_ede_ofb_cipher
# define des_ede3_cbc_cipher des_ede_cbc_cipher
# define des_ede3_ecb_cipher des_ede_ecb_cipher
    BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
                  EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
                  des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)

    BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
                     EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
                     des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)

    BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
                     EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
                     des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)

static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
                            const unsigned char *iv, int enc)
{
    DES_cblock *deskey = (DES_cblock *)key;
    DES_EDE_KEY *dat = data(ctx);

    dat->stream.cbc = NULL;
# if defined(SPARC_DES_CAPABLE)
    if (SPARC_DES_CAPABLE) {
        int mode = EVP_CIPHER_CTX_mode(ctx);

        if (mode == EVP_CIPH_CBC_MODE) {
            des_t4_key_expand(&deskey[0], &dat->ks1);
            des_t4_key_expand(&deskey[1], &dat->ks2);
            memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
            dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
                des_t4_ede3_cbc_decrypt;
            return 1;
        }
    }
# endif
    DES_set_key_unchecked(&deskey[0], &dat->ks1);
    DES_set_key_unchecked(&deskey[1], &dat->ks2);
    memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
    return 1;
}

static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
                             const unsigned char *iv, int enc)
{
    DES_cblock *deskey = (DES_cblock *)key;
    DES_EDE_KEY *dat = data(ctx);

    dat->stream.cbc = NULL;
# if defined(SPARC_DES_CAPABLE)
    if (SPARC_DES_CAPABLE) {
        int mode = EVP_CIPHER_CTX_mode(ctx);

        if (mode == EVP_CIPH_CBC_MODE) {
            des_t4_key_expand(&deskey[0], &dat->ks1);
            des_t4_key_expand(&deskey[1], &dat->ks2);
            des_t4_key_expand(&deskey[2], &dat->ks3);
            dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
                des_t4_ede3_cbc_decrypt;
            return 1;
        }
    }
# endif
    DES_set_key_unchecked(&deskey[0], &dat->ks1);
    DES_set_key_unchecked(&deskey[1], &dat->ks2);
    DES_set_key_unchecked(&deskey[2], &dat->ks3);
    return 1;
}

static int des3_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
{

    DES_cblock *deskey = ptr;

    switch (type) {
    case EVP_CTRL_RAND_KEY:
        if (ctx->drbg != NULL) {
            if (RAND_DRBG_bytes(ctx->drbg, ptr, EVP_CIPHER_CTX_key_length(ctx)) == 0)
                return 0;
        } else if (RAND_bytes(ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0) {
            return 0;
        }
        DES_set_odd_parity(deskey);
        if (EVP_CIPHER_CTX_key_length(ctx) >= 16)
            DES_set_odd_parity(deskey + 1);
        if (EVP_CIPHER_CTX_key_length(ctx) >= 24)
            DES_set_odd_parity(deskey + 2);
        return 1;

    default:
        return -1;
    }
}

const EVP_CIPHER *EVP_des_ede(void)
{
    return &des_ede_ecb;
}

const EVP_CIPHER *EVP_des_ede3(void)
{
    return &des_ede3_ecb;
}


# include <openssl/sha.h>

static const unsigned char wrap_iv[8] =
    { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };

static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
                           const unsigned char *in, size_t inl)
{
    unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
    int rv = -1;
    if (inl < 24)
        return -1;
    if (out == NULL)
        return inl - 16;
    memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
    /* Decrypt first block which will end up as icv */
    des_ede_cbc_cipher(ctx, icv, in, 8);
    /* Decrypt central blocks */
    /*
     * If decrypting in place move whole output along a block so the next
     * des_ede_cbc_cipher is in place.
     */
    if (out == in) {
        memmove(out, out + 8, inl - 8);
        in -= 8;
    }
    des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
    /* Decrypt final block which will be IV */
    des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
    /* Reverse order of everything */
    BUF_reverse(icv, NULL, 8);
    BUF_reverse(out, NULL, inl - 16);
    BUF_reverse(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 8);
    /* Decrypt again using new IV */
    des_ede_cbc_cipher(ctx, out, out, inl - 16);
    des_ede_cbc_cipher(ctx, icv, icv, 8);
    /* Work out SHA1 hash of first portion */
    SHA1(out, inl - 16, sha1tmp);

    if (!CRYPTO_memcmp(sha1tmp, icv, 8))
        rv = inl - 16;
    OPENSSL_cleanse(icv, 8);
    OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
    OPENSSL_cleanse(iv, 8);
    OPENSSL_cleanse(EVP_CIPHER_CTX_iv_noconst(ctx), 8);
    if (rv == -1)
        OPENSSL_cleanse(out, inl - 16);

    return rv;
}

static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
                         const unsigned char *in, size_t inl)
{
    unsigned char sha1tmp[SHA_DIGEST_LENGTH];
    if (out == NULL)
        return inl + 16;
    /* Copy input to output buffer + 8 so we have space for IV */
    memmove(out + 8, in, inl);
    /* Work out ICV */
    SHA1(in, inl, sha1tmp);
    memcpy(out + inl + 8, sha1tmp, 8);
    OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
    /* Generate random IV */
    if (ctx->drbg != NULL) {
        if (RAND_DRBG_bytes(ctx->drbg, EVP_CIPHER_CTX_iv_noconst(ctx), 8) == 0)
            return -1;
    } else if (RAND_bytes(EVP_CIPHER_CTX_iv_noconst(ctx), 8) <= 0) {
        return -1;
    }
    memcpy(out, EVP_CIPHER_CTX_iv_noconst(ctx), 8);
    /* Encrypt everything after IV in place */
    des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
    BUF_reverse(out, NULL, inl + 16);
    memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
    des_ede_cbc_cipher(ctx, out, out, inl + 16);
    return inl + 16;
}

static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
                                const unsigned char *in, size_t inl)
{
    /*
     * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
     * is more than will ever be needed. Also input length must be a multiple
     * of 8 bits.
     */
    if (inl >= EVP_MAXCHUNK || inl % 8)
        return -1;

    if (is_partially_overlapping(out, in, inl)) {
        EVPerr(EVP_F_DES_EDE3_WRAP_CIPHER, EVP_R_PARTIALLY_OVERLAPPING);
        return 0;
    }

    if (EVP_CIPHER_CTX_encrypting(ctx))
        return des_ede3_wrap(ctx, out, in, inl);
    else
        return des_ede3_unwrap(ctx, out, in, inl);
}

static const EVP_CIPHER des3_wrap = {
    NID_id_smime_alg_CMS3DESwrap,
    8, 24, 0,
    EVP_CIPH_WRAP_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
        | EVP_CIPH_FLAG_DEFAULT_ASN1,
    des_ede3_init_key, des_ede3_wrap_cipher,
    NULL,
    sizeof(DES_EDE_KEY),
    NULL, NULL, NULL, NULL
};

const EVP_CIPHER *EVP_des_ede3_wrap(void)
{
    return &des3_wrap;
}

#endif
Commit	Line	Data
62867571 RS	1	/*
62867571 RS	2	* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
d02b48c6	3	*
62867571 RS	4	* Licensed under the OpenSSL license (the "License"). You may not use
	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
d02b48c6 RE	8	*/
	9
	10	#include <stdio.h>
b39fc560	11	#include "internal/cryptlib.h"
9e9e8cb6	12	#ifndef OPENSSL_NO_DES
0f113f3e MC	13	# include <openssl/evp.h>
0f113f3e MC	14	# include <openssl/objects.h>
6435f0f6	15	# include "internal/evp_int.h"
0f113f3e MC	16	# include <openssl/des.h>
0f113f3e MC	17	# include <openssl/rand.h>
6decf943	18	# include <openssl/rand_drbg.h>
7141ba31	19	# include "evp_locl.h"
0f113f3e MC	20
	21	typedef struct {
	22	union {
	23	double align;
	24	DES_key_schedule ks[3];
	25	} ks;
	26	union {
7687f525 AP	27	void (cbc) (const void , void *, size_t,
7687f525 AP	28	const DES_key_schedule , unsigned char );
0f113f3e MC	29	} stream;
	30	} DES_EDE_KEY;
	31	# define ks1 ks.ks[0]
	32	# define ks2 ks.ks[1]
	33	# define ks3 ks.ks[2]
	34
	35	# if defined(AES_ASM) && (defined(__sparc) \|\| defined(__sparc__))
c5d975a7 AP	36	/* ---------^^^ this is not a typo, just a way to detect that
c5d975a7 AP	37	* assembler support was in general requested... */
0f113f3e	38	# include "sparc_arch.h"
c5d975a7 AP	39
	40	extern unsigned int OPENSSL_sparcv9cap_P[];
	41
0f113f3e	42	# define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
c5d975a7	43
0f113f3e MC	44	void des_t4_key_expand(const void key, DES_key_schedule ks);
0f113f3e MC	45	void des_t4_ede3_cbc_encrypt(const void inp, void out, size_t len,
7687f525	46	const DES_key_schedule ks[3], unsigned char iv[8]);
0f113f3e	47	void des_t4_ede3_cbc_decrypt(const void inp, void out, size_t len,
7687f525	48	const DES_key_schedule ks[3], unsigned char iv[8]);
0f113f3e	49	# endif
c5d975a7	50
1921eaad	51	static int des_ede_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
0f113f3e	52	const unsigned char *iv, int enc);
57ae2e24	53
1921eaad	54	static int des_ede3_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
0f113f3e	55	const unsigned char *iv, int enc);
d02b48c6	56
216659eb DSH	57	static int des3_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr);
216659eb DSH	58
6435f0f6	59	# define data(ctx) EVP_C_DATA(DES_EDE_KEY,ctx)
dbad1690	60
0f113f3e MC	61	/*
	62	* Because of various casts and different args can't use
	63	* IMPLEMENT_BLOCK_CIPHER
	64	*/
d02b48c6	65
1921eaad	66	static int des_ede_ecb_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e	67	const unsigned char *in, size_t inl)
57ae2e24	68	{
0f113f3e MC	69	BLOCK_CIPHER_ecb_loop()
	70	DES_ecb3_encrypt((const_DES_cblock *)(in + i),
	71	(DES_cblock *)(out + i),
	72	&data(ctx)->ks1, &data(ctx)->ks2,
6435f0f6	73	&data(ctx)->ks3, EVP_CIPHER_CTX_encrypting(ctx));
0f113f3e	74	return 1;
57ae2e24 DSH	75	}
57ae2e24 DSH	76
1921eaad	77	static int des_ede_ofb_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e	78	const unsigned char *in, size_t inl)
57ae2e24	79	{
0f113f3e	80	while (inl >= EVP_MAXCHUNK) {
6435f0f6	81	int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e MC	82	DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
0f113f3e MC	83	&data(ctx)->ks1, &data(ctx)->ks2,
6435f0f6 RL	84	&data(ctx)->ks3,
	85	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
	86	&num);
	87	EVP_CIPHER_CTX_set_num(ctx, num);
0f113f3e MC	88	inl -= EVP_MAXCHUNK;
	89	in += EVP_MAXCHUNK;
	90	out += EVP_MAXCHUNK;
	91	}
6435f0f6 RL	92	if (inl) {
6435f0f6 RL	93	int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e MC	94	DES_ede3_ofb64_encrypt(in, out, (long)inl,
0f113f3e MC	95	&data(ctx)->ks1, &data(ctx)->ks2,
6435f0f6 RL	96	&data(ctx)->ks3,
	97	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
	98	&num);
	99	EVP_CIPHER_CTX_set_num(ctx, num);
	100	}
0f113f3e	101	return 1;
57ae2e24 DSH	102	}
57ae2e24 DSH	103
1921eaad	104	static int des_ede_cbc_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e	105	const unsigned char *in, size_t inl)
57ae2e24	106	{
0f113f3e	107	DES_EDE_KEY *dat = data(ctx);
c5d975a7	108
7687f525 AP	109	if (dat->stream.cbc != NULL) {
	110	(*dat->stream.cbc) (in, out, inl, dat->ks.ks,
	111	EVP_CIPHER_CTX_iv_noconst(ctx));
0f113f3e MC	112	return 1;
	113	}
	114
	115	while (inl >= EVP_MAXCHUNK) {
	116	DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
	117	&dat->ks1, &dat->ks2, &dat->ks3,
7687f525 AP	118	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
7687f525 AP	119	EVP_CIPHER_CTX_encrypting(ctx));
0f113f3e MC	120	inl -= EVP_MAXCHUNK;
	121	in += EVP_MAXCHUNK;
	122	out += EVP_MAXCHUNK;
	123	}
	124	if (inl)
	125	DES_ede3_cbc_encrypt(in, out, (long)inl,
	126	&dat->ks1, &dat->ks2, &dat->ks3,
7687f525 AP	127	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
7687f525 AP	128	EVP_CIPHER_CTX_encrypting(ctx));
0f113f3e	129	return 1;
57ae2e24 DSH	130	}
57ae2e24 DSH	131
8c6336b0	132	static int des_ede_cfb64_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e	133	const unsigned char *in, size_t inl)
57ae2e24	134	{
0f113f3e	135	while (inl >= EVP_MAXCHUNK) {
6435f0f6	136	int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e MC	137	DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
0f113f3e MC	138	&data(ctx)->ks1, &data(ctx)->ks2,
6435f0f6 RL	139	&data(ctx)->ks3,
	140	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
	141	&num, EVP_CIPHER_CTX_encrypting(ctx));
	142	EVP_CIPHER_CTX_set_num(ctx, num);
0f113f3e MC	143	inl -= EVP_MAXCHUNK;
	144	in += EVP_MAXCHUNK;
	145	out += EVP_MAXCHUNK;
	146	}
6435f0f6 RL	147	if (inl) {
6435f0f6 RL	148	int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e MC	149	DES_ede3_cfb64_encrypt(in, out, (long)inl,
0f113f3e MC	150	&data(ctx)->ks1, &data(ctx)->ks2,
6435f0f6 RL	151	&data(ctx)->ks3,
	152	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
	153	&num, EVP_CIPHER_CTX_encrypting(ctx));
	154	EVP_CIPHER_CTX_set_num(ctx, num);
	155	}
0f113f3e	156	return 1;
57ae2e24 DSH	157	}
57ae2e24 DSH	158
0f113f3e MC	159	/*
	160	* Although we have a CFB-r implementation for 3-DES, it doesn't pack the
	161	* right way, so wrap it here
	162	*/
8c6336b0	163	static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e MC	164	const unsigned char *in, size_t inl)
0f113f3e MC	165	{
b444ac3e	166	size_t n;
0f113f3e MC	167	unsigned char c[1], d[1];
0f113f3e MC	168
fe2d1491 RS	169	if (!EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
fe2d1491 RS	170	inl *= 8;
0f113f3e MC	171	for (n = 0; n < inl; ++n) {
	172	c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
	173	DES_ede3_cfb_encrypt(c, d, 1, 1,
	174	&data(ctx)->ks1, &data(ctx)->ks2,
7687f525 AP	175	&data(ctx)->ks3,
7687f525 AP	176	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
6435f0f6	177	EVP_CIPHER_CTX_encrypting(ctx));
0f113f3e MC	178	out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
	179	\| ((d[0] & 0x80) >> (unsigned int)(n % 8));
	180	}
8c6336b0 AP	181
8c6336b0 AP	182	return 1;
0f113f3e	183	}
8c6336b0 AP	184
8c6336b0 AP	185	static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e MC	186	const unsigned char *in, size_t inl)
	187	{
	188	while (inl >= EVP_MAXCHUNK) {
	189	DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
	190	&data(ctx)->ks1, &data(ctx)->ks2,
7687f525 AP	191	&data(ctx)->ks3,
7687f525 AP	192	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
6435f0f6	193	EVP_CIPHER_CTX_encrypting(ctx));
0f113f3e MC	194	inl -= EVP_MAXCHUNK;
	195	in += EVP_MAXCHUNK;
	196	out += EVP_MAXCHUNK;
	197	}
b444ac3e	198	if (inl)
0f113f3e MC	199	DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
0f113f3e MC	200	&data(ctx)->ks1, &data(ctx)->ks2,
7687f525 AP	201	&data(ctx)->ks3,
7687f525 AP	202	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
6435f0f6	203	EVP_CIPHER_CTX_encrypting(ctx));
8c6336b0	204	return 1;
0f113f3e	205	}
8c6336b0	206
a6cd8707	207	BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
0f113f3e MC	208	EVP_CIPH_RAND_KEY \| EVP_CIPH_FLAG_DEFAULT_ASN1,
	209	des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
	210	# define des_ede3_cfb64_cipher des_ede_cfb64_cipher
	211	# define des_ede3_ofb_cipher des_ede_ofb_cipher
	212	# define des_ede3_cbc_cipher des_ede_cbc_cipher
	213	# define des_ede3_ecb_cipher des_ede_ecb_cipher
	214	BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
	215	EVP_CIPH_RAND_KEY \| EVP_CIPH_FLAG_DEFAULT_ASN1,
	216	des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
	217
	218	BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
	219	EVP_CIPH_RAND_KEY \| EVP_CIPH_FLAG_DEFAULT_ASN1,
	220	des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
	221
	222	BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
	223	EVP_CIPH_RAND_KEY \| EVP_CIPH_FLAG_DEFAULT_ASN1,
	224	des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
8c6336b0	225
1921eaad	226	static int des_ede_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
0f113f3e MC	227	const unsigned char *iv, int enc)
	228	{
	229	DES_cblock deskey = (DES_cblock )key;
	230	DES_EDE_KEY *dat = data(ctx);
	231
	232	dat->stream.cbc = NULL;
	233	# if defined(SPARC_DES_CAPABLE)
	234	if (SPARC_DES_CAPABLE) {
ecdd0ff7	235	int mode = EVP_CIPHER_CTX_mode(ctx);
0f113f3e MC	236
	237	if (mode == EVP_CIPH_CBC_MODE) {
	238	des_t4_key_expand(&deskey[0], &dat->ks1);
	239	des_t4_key_expand(&deskey[1], &dat->ks2);
	240	memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
	241	dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
	242	des_t4_ede3_cbc_decrypt;
	243	return 1;
	244	}
	245	}
	246	# endif
0f113f3e MC	247	DES_set_key_unchecked(&deskey[0], &dat->ks1);
0f113f3e MC	248	DES_set_key_unchecked(&deskey[1], &dat->ks2);
0f113f3e MC	249	memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
	250	return 1;
	251	}
d02b48c6	252
1921eaad	253	static int des_ede3_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
0f113f3e MC	254	const unsigned char *iv, int enc)
	255	{
	256	DES_cblock deskey = (DES_cblock )key;
	257	DES_EDE_KEY *dat = data(ctx);
c5d975a7	258
0f113f3e MC	259	dat->stream.cbc = NULL;
	260	# if defined(SPARC_DES_CAPABLE)
	261	if (SPARC_DES_CAPABLE) {
ecdd0ff7	262	int mode = EVP_CIPHER_CTX_mode(ctx);
0f113f3e MC	263
	264	if (mode == EVP_CIPH_CBC_MODE) {
	265	des_t4_key_expand(&deskey[0], &dat->ks1);
	266	des_t4_key_expand(&deskey[1], &dat->ks2);
	267	des_t4_key_expand(&deskey[2], &dat->ks3);
	268	dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
	269	des_t4_ede3_cbc_decrypt;
	270	return 1;
	271	}
	272	}
	273	# endif
0f113f3e MC	274	DES_set_key_unchecked(&deskey[0], &dat->ks1);
	275	DES_set_key_unchecked(&deskey[1], &dat->ks2);
	276	DES_set_key_unchecked(&deskey[2], &dat->ks3);
0f113f3e MC	277	return 1;
0f113f3e MC	278	}
57ae2e24	279
6435f0f6	280	static int des3_ctrl(EVP_CIPHER_CTX ctx, int type, int arg, void ptr)
0f113f3e MC	281	{
	282
	283	DES_cblock *deskey = ptr;
	284
	285	switch (type) {
	286	case EVP_CTRL_RAND_KEY:
d91f4568 KR	287	if (ctx->drbg != NULL) {
	288	if (RAND_DRBG_bytes(ctx->drbg, ptr, EVP_CIPHER_CTX_key_length(ctx)) == 0)
	289	return 0;
	290	} else if (RAND_bytes(ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0) {
0f113f3e	291	return 0;
d91f4568	292	}
0f113f3e	293	DES_set_odd_parity(deskey);
6435f0f6	294	if (EVP_CIPHER_CTX_key_length(ctx) >= 16)
0f113f3e	295	DES_set_odd_parity(deskey + 1);
6435f0f6	296	if (EVP_CIPHER_CTX_key_length(ctx) >= 24)
0f113f3e MC	297	DES_set_odd_parity(deskey + 2);
	298	return 1;
	299
	300	default:
	301	return -1;
	302	}
	303	}
216659eb	304
13588350	305	const EVP_CIPHER *EVP_des_ede(void)
57ae2e24	306	{
0f113f3e	307	return &des_ede_ecb;
57ae2e24 DSH	308	}
57ae2e24 DSH	309
13588350	310	const EVP_CIPHER *EVP_des_ede3(void)
57ae2e24	311	{
0f113f3e	312	return &des_ede3_ecb;
57ae2e24	313	}
97cf1f6c	314
97cf1f6c	315
474e469b	316	# include <openssl/sha.h>
97cf1f6c	317
0f113f3e MC	318	static const unsigned char wrap_iv[8] =
0f113f3e MC	319	{ 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
97cf1f6c DSH	320
97cf1f6c DSH	321	static int des_ede3_unwrap(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e MC	322	const unsigned char *in, size_t inl)
	323	{
	324	unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
	325	int rv = -1;
	326	if (inl < 24)
	327	return -1;
7687f525	328	if (out == NULL)
0f113f3e	329	return inl - 16;
6435f0f6	330	memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
0f113f3e MC	331	/* Decrypt first block which will end up as icv */
	332	des_ede_cbc_cipher(ctx, icv, in, 8);
	333	/* Decrypt central blocks */
	334	/*
	335	* If decrypting in place move whole output along a block so the next
	336	* des_ede_cbc_cipher is in place.
	337	*/
	338	if (out == in) {
	339	memmove(out, out + 8, inl - 8);
	340	in -= 8;
	341	}
	342	des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
	343	/* Decrypt final block which will be IV */
	344	des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
	345	/* Reverse order of everything */
	346	BUF_reverse(icv, NULL, 8);
	347	BUF_reverse(out, NULL, inl - 16);
6435f0f6	348	BUF_reverse(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 8);
0f113f3e MC	349	/* Decrypt again using new IV */
	350	des_ede_cbc_cipher(ctx, out, out, inl - 16);
	351	des_ede_cbc_cipher(ctx, icv, icv, 8);
	352	/* Work out SHA1 hash of first portion */
	353	SHA1(out, inl - 16, sha1tmp);
	354
	355	if (!CRYPTO_memcmp(sha1tmp, icv, 8))
	356	rv = inl - 16;
	357	OPENSSL_cleanse(icv, 8);
	358	OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
	359	OPENSSL_cleanse(iv, 8);
6435f0f6	360	OPENSSL_cleanse(EVP_CIPHER_CTX_iv_noconst(ctx), 8);
0f113f3e MC	361	if (rv == -1)
	362	OPENSSL_cleanse(out, inl - 16);
	363
	364	return rv;
	365	}
97cf1f6c DSH	366
97cf1f6c DSH	367	static int des_ede3_wrap(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e MC	368	const unsigned char *in, size_t inl)
	369	{
	370	unsigned char sha1tmp[SHA_DIGEST_LENGTH];
7687f525	371	if (out == NULL)
0f113f3e MC	372	return inl + 16;
	373	/* Copy input to output buffer + 8 so we have space for IV */
	374	memmove(out + 8, in, inl);
	375	/* Work out ICV */
	376	SHA1(in, inl, sha1tmp);
	377	memcpy(out + inl + 8, sha1tmp, 8);
	378	OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
	379	/* Generate random IV */
d91f4568 KR	380	if (ctx->drbg != NULL) {
	381	if (RAND_DRBG_bytes(ctx->drbg, EVP_CIPHER_CTX_iv_noconst(ctx), 8) == 0)
	382	return -1;
	383	} else if (RAND_bytes(EVP_CIPHER_CTX_iv_noconst(ctx), 8) <= 0) {
266483d2	384	return -1;
d91f4568	385	}
6435f0f6	386	memcpy(out, EVP_CIPHER_CTX_iv_noconst(ctx), 8);
0f113f3e MC	387	/* Encrypt everything after IV in place */
	388	des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
	389	BUF_reverse(out, NULL, inl + 16);
6435f0f6	390	memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
0f113f3e MC	391	des_ede_cbc_cipher(ctx, out, out, inl + 16);
	392	return inl + 16;
	393	}
97cf1f6c DSH	394
97cf1f6c DSH	395	static int des_ede3_wrap_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e MC	396	const unsigned char *in, size_t inl)
	397	{
	398	/*
	399	* Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
	400	* is more than will ever be needed. Also input length must be a multiple
	401	* of 8 bits.
	402	*/
	403	if (inl >= EVP_MAXCHUNK \|\| inl % 8)
	404	return -1;
7141ba31 MC	405
	406	if (is_partially_overlapping(out, in, inl)) {
	407	EVPerr(EVP_F_DES_EDE3_WRAP_CIPHER, EVP_R_PARTIALLY_OVERLAPPING);
	408	return 0;
	409	}
	410
6435f0f6	411	if (EVP_CIPHER_CTX_encrypting(ctx))
0f113f3e MC	412	return des_ede3_wrap(ctx, out, in, inl);
	413	else
	414	return des_ede3_unwrap(ctx, out, in, inl);
	415	}
97cf1f6c DSH	416
97cf1f6c DSH	417	static const EVP_CIPHER des3_wrap = {
0f113f3e MC	418	NID_id_smime_alg_CMS3DESwrap,
	419	8, 24, 0,
	420	EVP_CIPH_WRAP_MODE \| EVP_CIPH_CUSTOM_IV \| EVP_CIPH_FLAG_CUSTOM_CIPHER
	421	\| EVP_CIPH_FLAG_DEFAULT_ASN1,
	422	des_ede3_init_key, des_ede3_wrap_cipher,
	423	NULL,
	424	sizeof(DES_EDE_KEY),
	425	NULL, NULL, NULL, NULL
	426	};
97cf1f6c DSH	427
97cf1f6c DSH	428	const EVP_CIPHER *EVP_des_ede3_wrap(void)
0f113f3e MC	429	{
	430	return &des3_wrap;
	431	}
97cf1f6c	432
d02f751c	433	#endif