diff options
Diffstat (limited to 'openssl-1.1.0h/crypto/evp/e_des.c')
| -rw-r--r-- | openssl-1.1.0h/crypto/evp/e_des.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/evp/e_des.c b/openssl-1.1.0h/crypto/evp/e_des.c new file mode 100644 index 0000000..9b2facf --- /dev/null +++ b/openssl-1.1.0h/crypto/evp/e_des.c @@ -0,0 +1,242 @@ +/* + * 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> + +typedef struct { + union { + double align; + DES_key_schedule ks; + } ks; + union { + void (*cbc) (const void *, void *, size_t, + const DES_key_schedule *, unsigned char *); + } stream; +} EVP_DES_KEY; + +# 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_cbc_encrypt(const void *inp, void *out, size_t len, + const DES_key_schedule *ks, unsigned char iv[8]); +void des_t4_cbc_decrypt(const void *inp, void *out, size_t len, + const DES_key_schedule *ks, unsigned char iv[8]); +# endif + +static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc); +static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr); + +/* + * Because of various casts and different names can't use + * IMPLEMENT_BLOCK_CIPHER + */ + +static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) +{ + BLOCK_CIPHER_ecb_loop() + DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i), + EVP_CIPHER_CTX_get_cipher_data(ctx), + EVP_CIPHER_CTX_encrypting(ctx)); + return 1; +} + +static int des_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_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, + EVP_CIPHER_CTX_get_cipher_data(ctx), + (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_ofb64_encrypt(in, out, (long)inl, + EVP_CIPHER_CTX_get_cipher_data(ctx), + (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num); + EVP_CIPHER_CTX_set_num(ctx, num); + } + return 1; +} + +static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) +{ + EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_get_cipher_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_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK, + EVP_CIPHER_CTX_get_cipher_data(ctx), + (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_ncbc_encrypt(in, out, (long)inl, + EVP_CIPHER_CTX_get_cipher_data(ctx), + (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), + EVP_CIPHER_CTX_encrypting(ctx)); + return 1; +} + +static int des_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_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK, + EVP_CIPHER_CTX_get_cipher_data(ctx), + (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_cfb64_encrypt(in, out, (long)inl, + EVP_CIPHER_CTX_get_cipher_data(ctx), + (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 DES, it doesn't pack the right + * way, so wrap it here + */ +static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) +{ + size_t n, chunk = EVP_MAXCHUNK / 8; + unsigned char c[1], d[1]; + + if (inl < chunk) + chunk = inl; + + while (inl && inl >= chunk) { + for (n = 0; n < chunk * 8; ++n) { + c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0; + DES_cfb_encrypt(c, d, 1, 1, EVP_CIPHER_CTX_get_cipher_data(ctx), + (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)); + } + inl -= chunk; + in += chunk; + out += chunk; + if (inl < chunk) + chunk = inl; + } + + return 1; +} + +static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) +{ + while (inl >= EVP_MAXCHUNK) { + DES_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK, + EVP_CIPHER_CTX_get_cipher_data(ctx), + (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_cfb_encrypt(in, out, 8, (long)inl, + EVP_CIPHER_CTX_get_cipher_data(ctx), + (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), + EVP_CIPHER_CTX_encrypting(ctx)); + return 1; +} + +BLOCK_CIPHER_defs(des, EVP_DES_KEY, NID_des, 8, 8, 8, 64, + EVP_CIPH_RAND_KEY, des_init_key, NULL, + EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl) + + BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 1, + EVP_CIPH_RAND_KEY, des_init_key, NULL, + EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl) + + BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 8, + EVP_CIPH_RAND_KEY, des_init_key, NULL, + EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl) + +static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + DES_cblock *deskey = (DES_cblock *)key; + EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_get_cipher_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(key, &dat->ks.ks); + dat->stream.cbc = enc ? des_t4_cbc_encrypt : des_t4_cbc_decrypt; + return 1; + } + } +# endif + DES_set_key_unchecked(deskey, EVP_CIPHER_CTX_get_cipher_data(ctx)); + return 1; +} + +static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) +{ + + switch (type) { + case EVP_CTRL_RAND_KEY: + if (RAND_bytes(ptr, 8) <= 0) + return 0; + DES_set_odd_parity((DES_cblock *)ptr); + return 1; + + default: + return -1; + } +} + +#endif |