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Viewing changes to crypto/evp/e_des.c

  • Committer: Bazaar Package Importer
  • Author(s): Christoph Martin
  • Date: 2004-12-16 18:41:29 UTC
  • mto: (11.1.1 lenny)
  • mto: This revision was merged to the branch mainline in revision 3.
  • Revision ID: james.westby@ubuntu.com-20041216184129-z7xjkul57mh1jiha
Tags: upstream-0.9.7e
Import upstream version 0.9.7e

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crypto/evp/e_des.c
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 * [including the GNU Public Licence.]
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 */
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#ifndef OPENSSL_NO_DES
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#include <stdio.h>
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#include "cryptlib.h"
 
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#ifndef OPENSSL_NO_DES
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include "evp_locl.h"
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        return 1;
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}
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static int des_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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                          const unsigned char *in, unsigned int inl)
 
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static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 
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                            const unsigned char *in, unsigned int inl)
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{
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        DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data,
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                          (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
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        return 1;
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}
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/* Although we have a CFB-r implementation for DES, it doesn't pack the right
 
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   way, so wrap it here */
 
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static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 
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                           const unsigned char *in, unsigned int inl)
 
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    {
 
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    unsigned int n;
 
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    unsigned char c[1],d[1];
 
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    for(n=0 ; n < inl ; ++n)
 
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        {
 
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        c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
 
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        DES_cfb_encrypt(c,d,1,1,ctx->cipher_data,(DES_cblock *)ctx->iv,
 
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                        ctx->encrypt);
 
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        out[n/8]=(out[n/8]&~(0x80 >> (n%8)))|((d[0]&0x80) >> (n%8));
 
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        }
 
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    return 1;
 
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    }
 
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static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 
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                           const unsigned char *in, unsigned int inl)
 
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    {
 
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    DES_cfb_encrypt(in,out,8,inl,ctx->cipher_data,(DES_cblock *)ctx->iv,
 
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                    ctx->encrypt);
 
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    return 1;
 
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    }
 
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BLOCK_CIPHER_defs(des, DES_key_schedule, NID_des, 8, 8, 8, 64,
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                        0, des_init_key, NULL,
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                        EVP_CIPHER_set_asn1_iv,
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                        EVP_CIPHER_get_asn1_iv,
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                        NULL)
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BLOCK_CIPHER_def_cfb(des,DES_key_schedule,NID_des,8,8,1,0,des_init_key,NULL,
 
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                     EVP_CIPHER_set_asn1_iv,
 
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                     EVP_CIPHER_get_asn1_iv,NULL)
 
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BLOCK_CIPHER_def_cfb(des,DES_key_schedule,NID_des,8,8,8,0,des_init_key,NULL,
 
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                     EVP_CIPHER_set_asn1_iv,
 
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                     EVP_CIPHER_get_asn1_iv,NULL)
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static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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                        const unsigned char *iv, int enc)