diff options
Diffstat (limited to 'openssl-1.1.0h/crypto/evp/e_des3.c')
| -rw-r--r-- | openssl-1.1.0h/crypto/evp/e_des3.c | 424 |
1 files changed, 424 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/evp/e_des3.c b/openssl-1.1.0h/crypto/evp/e_des3.c new file mode 100644 index 0000000..da77936 --- /dev/null +++ b/openssl-1.1.0h/crypto/evp/e_des3.c @@ -0,0 +1,424 @@ +/* + * 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 "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 (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 (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 |