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

/*
 * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (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 "crypto/evp.h"
# include <openssl/des.h>
# include <openssl/rand.h>
# include "evp_locl.h"

typedef struct {
    union {
        OSSL_UNION_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;
    int kl;

    switch (type) {
    case EVP_CTRL_RAND_KEY:
        kl = EVP_CIPHER_CTX_key_length(ctx);
        if (kl < 0 || RAND_priv_bytes(ptr, kl) <= 0)
            return 0;
        DES_set_odd_parity(deskey);
        if (kl >= 16)
            DES_set_odd_parity(deskey + 1);
        if (kl >= 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 (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	1	/*
39147079	2	* Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
d02b48c6	3	*
4a8b0c55	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
62867571 RS	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>
25f2138b	15	# include "crypto/evp.h"
0f113f3e MC	16	# include <openssl/des.h>
0f113f3e MC	17	# include <openssl/rand.h>
7141ba31	18	# include "evp_locl.h"
0f113f3e MC	19
	20	typedef struct {
	21	union {
39147079	22	OSSL_UNION_ALIGN;
0f113f3e MC	23	DES_key_schedule ks[3];
	24	} ks;
	25	union {
7687f525 AP	26	void (cbc) (const void , void *, size_t,
7687f525 AP	27	const DES_key_schedule , unsigned char );
0f113f3e MC	28	} stream;
	29	} DES_EDE_KEY;
	30	# define ks1 ks.ks[0]
	31	# define ks2 ks.ks[1]
	32	# define ks3 ks.ks[2]
	33
	34	# if defined(AES_ASM) && (defined(__sparc) \|\| defined(__sparc__))
c5d975a7 AP	35	/* ---------^^^ this is not a typo, just a way to detect that
c5d975a7 AP	36	* assembler support was in general requested... */
0f113f3e	37	# include "sparc_arch.h"
c5d975a7 AP	38
	39	extern unsigned int OPENSSL_sparcv9cap_P[];
	40
0f113f3e	41	# define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
c5d975a7	42
0f113f3e MC	43	void des_t4_key_expand(const void key, DES_key_schedule ks);
0f113f3e MC	44	void des_t4_ede3_cbc_encrypt(const void inp, void out, size_t len,
7687f525	45	const DES_key_schedule ks[3], unsigned char iv[8]);
0f113f3e	46	void des_t4_ede3_cbc_decrypt(const void inp, void out, size_t len,
7687f525	47	const DES_key_schedule ks[3], unsigned char iv[8]);
0f113f3e	48	# endif
c5d975a7	49
1921eaad	50	static int des_ede_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
0f113f3e	51	const unsigned char *iv, int enc);
57ae2e24	52
1921eaad	53	static int des_ede3_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
0f113f3e	54	const unsigned char *iv, int enc);
d02b48c6	55
216659eb DSH	56	static int des3_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr);
216659eb DSH	57
6435f0f6	58	# define data(ctx) EVP_C_DATA(DES_EDE_KEY,ctx)
dbad1690	59
0f113f3e MC	60	/*
	61	* Because of various casts and different args can't use
	62	* IMPLEMENT_BLOCK_CIPHER
	63	*/
d02b48c6	64
1921eaad	65	static int des_ede_ecb_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e	66	const unsigned char *in, size_t inl)
57ae2e24	67	{
0f113f3e MC	68	BLOCK_CIPHER_ecb_loop()
	69	DES_ecb3_encrypt((const_DES_cblock *)(in + i),
	70	(DES_cblock *)(out + i),
	71	&data(ctx)->ks1, &data(ctx)->ks2,
6435f0f6	72	&data(ctx)->ks3, EVP_CIPHER_CTX_encrypting(ctx));
0f113f3e	73	return 1;
57ae2e24 DSH	74	}
57ae2e24 DSH	75
1921eaad	76	static int des_ede_ofb_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e	77	const unsigned char *in, size_t inl)
57ae2e24	78	{
0f113f3e	79	while (inl >= EVP_MAXCHUNK) {
6435f0f6	80	int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e MC	81	DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
0f113f3e MC	82	&data(ctx)->ks1, &data(ctx)->ks2,
6435f0f6 RL	83	&data(ctx)->ks3,
	84	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
	85	&num);
	86	EVP_CIPHER_CTX_set_num(ctx, num);
0f113f3e MC	87	inl -= EVP_MAXCHUNK;
	88	in += EVP_MAXCHUNK;
	89	out += EVP_MAXCHUNK;
	90	}
6435f0f6 RL	91	if (inl) {
6435f0f6 RL	92	int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e MC	93	DES_ede3_ofb64_encrypt(in, out, (long)inl,
0f113f3e MC	94	&data(ctx)->ks1, &data(ctx)->ks2,
6435f0f6 RL	95	&data(ctx)->ks3,
	96	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
	97	&num);
	98	EVP_CIPHER_CTX_set_num(ctx, num);
	99	}
0f113f3e	100	return 1;
57ae2e24 DSH	101	}
57ae2e24 DSH	102
1921eaad	103	static int des_ede_cbc_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e	104	const unsigned char *in, size_t inl)
57ae2e24	105	{
0f113f3e	106	DES_EDE_KEY *dat = data(ctx);
c5d975a7	107
7687f525 AP	108	if (dat->stream.cbc != NULL) {
	109	(*dat->stream.cbc) (in, out, inl, dat->ks.ks,
	110	EVP_CIPHER_CTX_iv_noconst(ctx));
0f113f3e MC	111	return 1;
	112	}
	113
	114	while (inl >= EVP_MAXCHUNK) {
	115	DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
	116	&dat->ks1, &dat->ks2, &dat->ks3,
7687f525 AP	117	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
7687f525 AP	118	EVP_CIPHER_CTX_encrypting(ctx));
0f113f3e MC	119	inl -= EVP_MAXCHUNK;
	120	in += EVP_MAXCHUNK;
	121	out += EVP_MAXCHUNK;
	122	}
	123	if (inl)
	124	DES_ede3_cbc_encrypt(in, out, (long)inl,
	125	&dat->ks1, &dat->ks2, &dat->ks3,
7687f525 AP	126	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
7687f525 AP	127	EVP_CIPHER_CTX_encrypting(ctx));
0f113f3e	128	return 1;
57ae2e24 DSH	129	}
57ae2e24 DSH	130
8c6336b0	131	static int des_ede_cfb64_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e	132	const unsigned char *in, size_t inl)
57ae2e24	133	{
0f113f3e	134	while (inl >= EVP_MAXCHUNK) {
6435f0f6	135	int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e MC	136	DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
0f113f3e MC	137	&data(ctx)->ks1, &data(ctx)->ks2,
6435f0f6 RL	138	&data(ctx)->ks3,
	139	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
	140	&num, EVP_CIPHER_CTX_encrypting(ctx));
	141	EVP_CIPHER_CTX_set_num(ctx, num);
0f113f3e MC	142	inl -= EVP_MAXCHUNK;
	143	in += EVP_MAXCHUNK;
	144	out += EVP_MAXCHUNK;
	145	}
6435f0f6 RL	146	if (inl) {
6435f0f6 RL	147	int num = EVP_CIPHER_CTX_num(ctx);
0f113f3e MC	148	DES_ede3_cfb64_encrypt(in, out, (long)inl,
0f113f3e MC	149	&data(ctx)->ks1, &data(ctx)->ks2,
6435f0f6 RL	150	&data(ctx)->ks3,
	151	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
	152	&num, EVP_CIPHER_CTX_encrypting(ctx));
	153	EVP_CIPHER_CTX_set_num(ctx, num);
	154	}
0f113f3e	155	return 1;
57ae2e24 DSH	156	}
57ae2e24 DSH	157
0f113f3e MC	158	/*
	159	* Although we have a CFB-r implementation for 3-DES, it doesn't pack the
	160	* right way, so wrap it here
	161	*/
8c6336b0	162	static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e MC	163	const unsigned char *in, size_t inl)
0f113f3e MC	164	{
b444ac3e	165	size_t n;
0f113f3e MC	166	unsigned char c[1], d[1];
0f113f3e MC	167
fe2d1491 RS	168	if (!EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
fe2d1491 RS	169	inl *= 8;
0f113f3e MC	170	for (n = 0; n < inl; ++n) {
	171	c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
	172	DES_ede3_cfb_encrypt(c, d, 1, 1,
	173	&data(ctx)->ks1, &data(ctx)->ks2,
7687f525 AP	174	&data(ctx)->ks3,
7687f525 AP	175	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
6435f0f6	176	EVP_CIPHER_CTX_encrypting(ctx));
0f113f3e MC	177	out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
	178	\| ((d[0] & 0x80) >> (unsigned int)(n % 8));
	179	}
8c6336b0 AP	180
8c6336b0 AP	181	return 1;
0f113f3e	182	}
8c6336b0 AP	183
8c6336b0 AP	184	static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e MC	185	const unsigned char *in, size_t inl)
	186	{
	187	while (inl >= EVP_MAXCHUNK) {
	188	DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
	189	&data(ctx)->ks1, &data(ctx)->ks2,
7687f525 AP	190	&data(ctx)->ks3,
7687f525 AP	191	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
6435f0f6	192	EVP_CIPHER_CTX_encrypting(ctx));
0f113f3e MC	193	inl -= EVP_MAXCHUNK;
	194	in += EVP_MAXCHUNK;
	195	out += EVP_MAXCHUNK;
	196	}
b444ac3e	197	if (inl)
0f113f3e MC	198	DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
0f113f3e MC	199	&data(ctx)->ks1, &data(ctx)->ks2,
7687f525 AP	200	&data(ctx)->ks3,
7687f525 AP	201	(DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
6435f0f6	202	EVP_CIPHER_CTX_encrypting(ctx));
8c6336b0	203	return 1;
0f113f3e	204	}
8c6336b0	205
a6cd8707	206	BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
0f113f3e MC	207	EVP_CIPH_RAND_KEY \| EVP_CIPH_FLAG_DEFAULT_ASN1,
	208	des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
	209	# define des_ede3_cfb64_cipher des_ede_cfb64_cipher
	210	# define des_ede3_ofb_cipher des_ede_ofb_cipher
	211	# define des_ede3_cbc_cipher des_ede_cbc_cipher
	212	# define des_ede3_ecb_cipher des_ede_ecb_cipher
	213	BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
	214	EVP_CIPH_RAND_KEY \| EVP_CIPH_FLAG_DEFAULT_ASN1,
	215	des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
	216
	217	BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
	218	EVP_CIPH_RAND_KEY \| EVP_CIPH_FLAG_DEFAULT_ASN1,
	219	des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
	220
	221	BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
	222	EVP_CIPH_RAND_KEY \| EVP_CIPH_FLAG_DEFAULT_ASN1,
	223	des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
8c6336b0	224
1921eaad	225	static int des_ede_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
0f113f3e MC	226	const unsigned char *iv, int enc)
	227	{
	228	DES_cblock deskey = (DES_cblock )key;
	229	DES_EDE_KEY *dat = data(ctx);
	230
	231	dat->stream.cbc = NULL;
	232	# if defined(SPARC_DES_CAPABLE)
	233	if (SPARC_DES_CAPABLE) {
ecdd0ff7	234	int mode = EVP_CIPHER_CTX_mode(ctx);
0f113f3e MC	235
	236	if (mode == EVP_CIPH_CBC_MODE) {
	237	des_t4_key_expand(&deskey[0], &dat->ks1);
	238	des_t4_key_expand(&deskey[1], &dat->ks2);
	239	memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
	240	dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
	241	des_t4_ede3_cbc_decrypt;
	242	return 1;
	243	}
	244	}
	245	# endif
0f113f3e MC	246	DES_set_key_unchecked(&deskey[0], &dat->ks1);
0f113f3e MC	247	DES_set_key_unchecked(&deskey[1], &dat->ks2);
0f113f3e MC	248	memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
	249	return 1;
	250	}
d02b48c6	251
1921eaad	252	static int des_ede3_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
0f113f3e MC	253	const unsigned char *iv, int enc)
	254	{
	255	DES_cblock deskey = (DES_cblock )key;
	256	DES_EDE_KEY *dat = data(ctx);
c5d975a7	257
0f113f3e MC	258	dat->stream.cbc = NULL;
	259	# if defined(SPARC_DES_CAPABLE)
	260	if (SPARC_DES_CAPABLE) {
ecdd0ff7	261	int mode = EVP_CIPHER_CTX_mode(ctx);
0f113f3e MC	262
	263	if (mode == EVP_CIPH_CBC_MODE) {
	264	des_t4_key_expand(&deskey[0], &dat->ks1);
	265	des_t4_key_expand(&deskey[1], &dat->ks2);
	266	des_t4_key_expand(&deskey[2], &dat->ks3);
	267	dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
	268	des_t4_ede3_cbc_decrypt;
	269	return 1;
	270	}
	271	}
	272	# endif
0f113f3e MC	273	DES_set_key_unchecked(&deskey[0], &dat->ks1);
	274	DES_set_key_unchecked(&deskey[1], &dat->ks2);
	275	DES_set_key_unchecked(&deskey[2], &dat->ks3);
0f113f3e MC	276	return 1;
0f113f3e MC	277	}
57ae2e24	278
6435f0f6	279	static int des3_ctrl(EVP_CIPHER_CTX ctx, int type, int arg, void ptr)
0f113f3e MC	280	{
	281
	282	DES_cblock *deskey = ptr;
6521cb03	283	int kl;
0f113f3e MC	284
	285	switch (type) {
	286	case EVP_CTRL_RAND_KEY:
6521cb03 P	287	kl = EVP_CIPHER_CTX_key_length(ctx);
6521cb03 P	288	if (kl < 0 \|\| RAND_priv_bytes(ptr, kl) <= 0)
0f113f3e MC	289	return 0;
0f113f3e MC	290	DES_set_odd_parity(deskey);
6521cb03	291	if (kl >= 16)
0f113f3e	292	DES_set_odd_parity(deskey + 1);
6521cb03	293	if (kl >= 24)
0f113f3e MC	294	DES_set_odd_parity(deskey + 2);
	295	return 1;
	296
	297	default:
	298	return -1;
	299	}
	300	}
216659eb	301
13588350	302	const EVP_CIPHER *EVP_des_ede(void)
57ae2e24	303	{
0f113f3e	304	return &des_ede_ecb;
57ae2e24 DSH	305	}
57ae2e24 DSH	306
13588350	307	const EVP_CIPHER *EVP_des_ede3(void)
57ae2e24	308	{
0f113f3e	309	return &des_ede3_ecb;
57ae2e24	310	}
97cf1f6c	311
97cf1f6c	312
474e469b	313	# include <openssl/sha.h>
97cf1f6c	314
0f113f3e MC	315	static const unsigned char wrap_iv[8] =
0f113f3e MC	316	{ 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
97cf1f6c DSH	317
97cf1f6c DSH	318	static int des_ede3_unwrap(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e MC	319	const unsigned char *in, size_t inl)
	320	{
	321	unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
	322	int rv = -1;
	323	if (inl < 24)
	324	return -1;
7687f525	325	if (out == NULL)
0f113f3e	326	return inl - 16;
6435f0f6	327	memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
0f113f3e MC	328	/* Decrypt first block which will end up as icv */
	329	des_ede_cbc_cipher(ctx, icv, in, 8);
	330	/* Decrypt central blocks */
	331	/*
	332	* If decrypting in place move whole output along a block so the next
	333	* des_ede_cbc_cipher is in place.
	334	*/
	335	if (out == in) {
	336	memmove(out, out + 8, inl - 8);
	337	in -= 8;
	338	}
	339	des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
	340	/* Decrypt final block which will be IV */
	341	des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
	342	/* Reverse order of everything */
	343	BUF_reverse(icv, NULL, 8);
	344	BUF_reverse(out, NULL, inl - 16);
6435f0f6	345	BUF_reverse(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 8);
0f113f3e MC	346	/* Decrypt again using new IV */
	347	des_ede_cbc_cipher(ctx, out, out, inl - 16);
	348	des_ede_cbc_cipher(ctx, icv, icv, 8);
	349	/* Work out SHA1 hash of first portion */
	350	SHA1(out, inl - 16, sha1tmp);
	351
	352	if (!CRYPTO_memcmp(sha1tmp, icv, 8))
	353	rv = inl - 16;
	354	OPENSSL_cleanse(icv, 8);
	355	OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
	356	OPENSSL_cleanse(iv, 8);
6435f0f6	357	OPENSSL_cleanse(EVP_CIPHER_CTX_iv_noconst(ctx), 8);
0f113f3e MC	358	if (rv == -1)
	359	OPENSSL_cleanse(out, inl - 16);
	360
	361	return rv;
	362	}
97cf1f6c DSH	363
97cf1f6c DSH	364	static int des_ede3_wrap(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e MC	365	const unsigned char *in, size_t inl)
	366	{
	367	unsigned char sha1tmp[SHA_DIGEST_LENGTH];
7687f525	368	if (out == NULL)
0f113f3e MC	369	return inl + 16;
	370	/* Copy input to output buffer + 8 so we have space for IV */
	371	memmove(out + 8, in, inl);
	372	/* Work out ICV */
	373	SHA1(in, inl, sha1tmp);
	374	memcpy(out + inl + 8, sha1tmp, 8);
	375	OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
	376	/* Generate random IV */
16cfc2c9	377	if (RAND_bytes(EVP_CIPHER_CTX_iv_noconst(ctx), 8) <= 0)
266483d2	378	return -1;
6435f0f6	379	memcpy(out, EVP_CIPHER_CTX_iv_noconst(ctx), 8);
0f113f3e MC	380	/* Encrypt everything after IV in place */
	381	des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
	382	BUF_reverse(out, NULL, inl + 16);
6435f0f6	383	memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
0f113f3e MC	384	des_ede_cbc_cipher(ctx, out, out, inl + 16);
	385	return inl + 16;
	386	}
97cf1f6c DSH	387
97cf1f6c DSH	388	static int des_ede3_wrap_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
0f113f3e MC	389	const unsigned char *in, size_t inl)
	390	{
	391	/*
	392	* Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
	393	* is more than will ever be needed. Also input length must be a multiple
	394	* of 8 bits.
	395	*/
	396	if (inl >= EVP_MAXCHUNK \|\| inl % 8)
	397	return -1;
7141ba31 MC	398
	399	if (is_partially_overlapping(out, in, inl)) {
	400	EVPerr(EVP_F_DES_EDE3_WRAP_CIPHER, EVP_R_PARTIALLY_OVERLAPPING);
	401	return 0;
	402	}
	403
6435f0f6	404	if (EVP_CIPHER_CTX_encrypting(ctx))
0f113f3e MC	405	return des_ede3_wrap(ctx, out, in, inl);
	406	else
	407	return des_ede3_unwrap(ctx, out, in, inl);
	408	}
97cf1f6c DSH	409
97cf1f6c DSH	410	static const EVP_CIPHER des3_wrap = {
0f113f3e MC	411	NID_id_smime_alg_CMS3DESwrap,
	412	8, 24, 0,
	413	EVP_CIPH_WRAP_MODE \| EVP_CIPH_CUSTOM_IV \| EVP_CIPH_FLAG_CUSTOM_CIPHER
	414	\| EVP_CIPH_FLAG_DEFAULT_ASN1,
	415	des_ede3_init_key, des_ede3_wrap_cipher,
	416	NULL,
	417	sizeof(DES_EDE_KEY),
	418	NULL, NULL, NULL, NULL
	419	};
97cf1f6c DSH	420
97cf1f6c DSH	421	const EVP_CIPHER *EVP_des_ede3_wrap(void)
0f113f3e MC	422	{
	423	return &des3_wrap;
	424	}
97cf1f6c	425
d02f751c	426	#endif