#include <stdio.h>
#include "cryptlib.h"
#include <openssl/evp.h>
#include <openssl/objects.h>
int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
{
int ret;
if (c->cipher->set_asn1_parameters != NULL)
ret=c->cipher->set_asn1_parameters(c,type);
else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1)
ret=EVP_CIPHER_set_asn1_iv(c, type);
else
ret=-1;
return(ret);
}
int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
{
int ret;
if (c->cipher->get_asn1_parameters != NULL)
ret=c->cipher->get_asn1_parameters(c,type);
else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1)
ret=EVP_CIPHER_get_asn1_iv(c, type);
else
ret=-1;
return(ret);
}
int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
{
int i=0;
unsigned int l;
if (type != NULL)
{
l=EVP_CIPHER_CTX_iv_length(c);
OPENSSL_assert(l <= sizeof(c->iv));
i=ASN1_TYPE_get_octetstring(type,c->oiv,l);
if (i != (int)l)
return(-1);
else if (i > 0)
memcpy(c->iv,c->oiv,l);
}
return(i);
}
int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
{
int i=0;
unsigned int j;
if (type != NULL)
{
j=EVP_CIPHER_CTX_iv_length(c);
OPENSSL_assert(j <= sizeof(c->iv));
i=ASN1_TYPE_set_octetstring(type,c->oiv,j);
}
return(i);
}
int EVP_CIPHER_type(const EVP_CIPHER *ctx)
{
int nid;
ASN1_OBJECT *otmp;
nid = EVP_CIPHER_nid(ctx);
switch(nid) {
case NID_rc2_cbc:
case NID_rc2_64_cbc:
case NID_rc2_40_cbc:
return NID_rc2_cbc;
case NID_rc4:
case NID_rc4_40:
return NID_rc4;
case NID_aes_128_cfb128:
case NID_aes_128_cfb8:
case NID_aes_128_cfb1:
return NID_aes_128_cfb128;
case NID_aes_192_cfb128:
case NID_aes_192_cfb8:
case NID_aes_192_cfb1:
return NID_aes_192_cfb128;
case NID_aes_256_cfb128:
case NID_aes_256_cfb8:
case NID_aes_256_cfb1:
return NID_aes_256_cfb128;
case NID_des_cfb64:
case NID_des_cfb8:
case NID_des_cfb1:
return NID_des_cfb64;
case NID_des_ede3_cfb64:
case NID_des_ede3_cfb8:
case NID_des_ede3_cfb1:
return NID_des_cfb64;
default:
otmp = OBJ_nid2obj(nid);
if(!otmp || !otmp->data) nid = NID_undef;
ASN1_OBJECT_free(otmp);
return nid;
}
}
int EVP_CIPHER_block_size(const EVP_CIPHER *e)
{
return e->block_size;
}
int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx)
{
return ctx->cipher->block_size;
}
const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx)
{
return ctx->cipher;
}
unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher)
{
return cipher->flags;
}
void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx)
{
return ctx->app_data;
}
void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data)
{
ctx->app_data = data;
}
int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher)
{
return cipher->iv_len;
}
int EVP_CIPHER_key_length(const EVP_CIPHER *cipher)
{
return cipher->key_len;
}
int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
{
return ctx->key_len;
}
int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx)
{
return ctx->cipher->nid;
}
int EVP_MD_block_size(const EVP_MD *md)
{
return md->block_size;
}
int EVP_MD_type(const EVP_MD *md)
{
return md->type;
}
int EVP_MD_pkey_type(const EVP_MD *md)
{
return md->pkey_type;
}
int EVP_MD_size(const EVP_MD *md)
{
return md->md_size;
}
const EVP_MD * EVP_MD_CTX_md(const EVP_MD_CTX *ctx)
{
return ctx->digest;
}
void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags)
{
ctx->flags |= flags;
}
void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags)
{
ctx->flags &= ~flags;
}
int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags)
{
return (ctx->flags & flags);
}
void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags)
{
ctx->flags |= flags;
}
void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags)
{
ctx->flags &= ~flags;
}
int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags)
{
return (ctx->flags & flags);
}