crypto/evp/e_des3.c - third_party/openssl - Git at Google

 /*
  * Copyright 1995-2021 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
  */

 /*
  * DES low level APIs are deprecated for public use, but still ok for internal
  * use.
  */
 #include "internal/deprecated.h"

 #include <stdio.h>
 #include "internal/cryptlib.h"
 #ifndef OPENSSL_NO_DES
 # include <openssl/objects.h>
 # include "crypto/evp.h"
 # include "crypto/sha.h"
 # include <openssl/des.h>
 # include <openssl/rand.h>
 # include "evp_local.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 "crypto/sparc_arch.h"

 #  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_is_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_get_num(ctx);
         DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
                                &data(ctx)->ks1, &data(ctx)->ks2,
                                &data(ctx)->ks3,
                                (DES_cblock *)ctx->iv,
                                &num);
         EVP_CIPHER_CTX_set_num(ctx, num);
         inl -= EVP_MAXCHUNK;
         in += EVP_MAXCHUNK;
         out += EVP_MAXCHUNK;
     }
     if (inl) {
         int num = EVP_CIPHER_CTX_get_num(ctx);
         DES_ede3_ofb64_encrypt(in, out, (long)inl,
                                &data(ctx)->ks1, &data(ctx)->ks2,
                                &data(ctx)->ks3,
                                (DES_cblock *)ctx->iv,
                                &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,
                             ctx->iv);
         return 1;
     }

     while (inl >= EVP_MAXCHUNK) {
         DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
                              &dat->ks1, &dat->ks2, &dat->ks3,
                              (DES_cblock *)ctx->iv,
                              EVP_CIPHER_CTX_is_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 *)ctx->iv,
                              EVP_CIPHER_CTX_is_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_get_num(ctx);
         DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
                                &data(ctx)->ks1, &data(ctx)->ks2,
                                &data(ctx)->ks3, (DES_cblock *)ctx->iv,
                                &num, EVP_CIPHER_CTX_is_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_get_num(ctx);
         DES_ede3_cfb64_encrypt(in, out, (long)inl,
                                &data(ctx)->ks1, &data(ctx)->ks2,
                                &data(ctx)->ks3, (DES_cblock *)ctx->iv,
                                &num, EVP_CIPHER_CTX_is_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];
     unsigned char d[1] = { 0 }; /* Appease Coverity */

     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 *)ctx->iv,
                              EVP_CIPHER_CTX_is_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 *)ctx->iv,
                              EVP_CIPHER_CTX_is_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 *)ctx->iv,
                              EVP_CIPHER_CTX_is_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_get_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_get_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_get_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(ctx->iv, 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(ctx->iv, iv, 8);
     /* Decrypt again using new IV */
     des_ede_cbc_cipher(ctx, out, out, inl - 16);
     des_ede_cbc_cipher(ctx, icv, icv, 8);
     if (ossl_sha1(out, inl - 16, sha1tmp)  /* Work out hash of first portion */
             && CRYPTO_memcmp(sha1tmp, icv, 8) == 0)
         rv = inl - 16;
     OPENSSL_cleanse(icv, 8);
     OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
     OPENSSL_cleanse(iv, 8);
     OPENSSL_cleanse(ctx->iv, 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 */
     if (!ossl_sha1(in, inl, sha1tmp))
         return -1;
     memcpy(out + inl + 8, sha1tmp, 8);
     OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
     /* Generate random IV */
     if (RAND_bytes(ctx->iv, 8) <= 0)
         return -1;
     memcpy(out, ctx->iv, 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(ctx->iv, 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 (ossl_is_partially_overlapping(out, in, inl)) {
         ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
         return 0;
     }

     if (EVP_CIPHER_CTX_is_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,
     EVP_ORIG_GLOBAL,
     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
	/*
	* Copyright 1995-2021 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
	*/

	/*
	* DES low level APIs are deprecated for public use, but still ok for internal
	* use.
	*/
	#include "internal/deprecated.h"

	#include <stdio.h>
	#include "internal/cryptlib.h"
	#ifndef OPENSSL_NO_DES
	# include <openssl/objects.h>
	# include "crypto/evp.h"
	# include "crypto/sha.h"
	# include <openssl/des.h>
	# include <openssl/rand.h>
	# include "evp_local.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 "crypto/sparc_arch.h"

	# 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_is_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_get_num(ctx);
	DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
	&data(ctx)->ks1, &data(ctx)->ks2,
	&data(ctx)->ks3,
	(DES_cblock *)ctx->iv,
	&num);
	EVP_CIPHER_CTX_set_num(ctx, num);
	inl -= EVP_MAXCHUNK;
	in += EVP_MAXCHUNK;
	out += EVP_MAXCHUNK;
	}
	if (inl) {
	int num = EVP_CIPHER_CTX_get_num(ctx);
	DES_ede3_ofb64_encrypt(in, out, (long)inl,
	&data(ctx)->ks1, &data(ctx)->ks2,
	&data(ctx)->ks3,
	(DES_cblock *)ctx->iv,
	&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,
	ctx->iv);
	return 1;
	}

	while (inl >= EVP_MAXCHUNK) {
	DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
	&dat->ks1, &dat->ks2, &dat->ks3,
	(DES_cblock *)ctx->iv,
	EVP_CIPHER_CTX_is_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 *)ctx->iv,
	EVP_CIPHER_CTX_is_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_get_num(ctx);
	DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
	&data(ctx)->ks1, &data(ctx)->ks2,
	&data(ctx)->ks3, (DES_cblock *)ctx->iv,
	&num, EVP_CIPHER_CTX_is_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_get_num(ctx);
	DES_ede3_cfb64_encrypt(in, out, (long)inl,
	&data(ctx)->ks1, &data(ctx)->ks2,
	&data(ctx)->ks3, (DES_cblock *)ctx->iv,
	&num, EVP_CIPHER_CTX_is_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];
	unsigned char d[1] = { 0 }; /* Appease Coverity */

	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 *)ctx->iv,
	EVP_CIPHER_CTX_is_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 *)ctx->iv,
	EVP_CIPHER_CTX_is_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 *)ctx->iv,
	EVP_CIPHER_CTX_is_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_get_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_get_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_get_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(ctx->iv, 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(ctx->iv, iv, 8);
	/* Decrypt again using new IV */
	des_ede_cbc_cipher(ctx, out, out, inl - 16);
	des_ede_cbc_cipher(ctx, icv, icv, 8);
	if (ossl_sha1(out, inl - 16, sha1tmp) /* Work out hash of first portion */
	&& CRYPTO_memcmp(sha1tmp, icv, 8) == 0)
	rv = inl - 16;
	OPENSSL_cleanse(icv, 8);
	OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
	OPENSSL_cleanse(iv, 8);
	OPENSSL_cleanse(ctx->iv, 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 */
	if (!ossl_sha1(in, inl, sha1tmp))
	return -1;
	memcpy(out + inl + 8, sha1tmp, 8);
	OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
	/* Generate random IV */
	if (RAND_bytes(ctx->iv, 8) <= 0)
	return -1;
	memcpy(out, ctx->iv, 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(ctx->iv, 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 (ossl_is_partially_overlapping(out, in, inl)) {
	ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
	return 0;
	}

	if (EVP_CIPHER_CTX_is_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,
	EVP_ORIG_GLOBAL,
	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