#include "cryptlib.h"
#include <openssl/evp.h>
#include <openssl/err.h>
+#include <openssl/rand.h>
+#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
+#endif
+#ifdef OPENSSL_FIPS
+#include <openssl/fips.h>
+#endif
#include "evp_locl.h"
-const char *EVP_version="EVP" OPENSSL_VERSION_PTEXT;
+#ifdef OPENSSL_FIPS
+#define M_do_cipher(ctx, out, in, inl) FIPS_cipher(ctx, out, in, inl)
+#else
+#define M_do_cipher(ctx, out, in, inl) ctx->cipher->do_cipher(ctx, out, in, inl)
+#endif
+
+
+const char EVP_version[]="EVP" OPENSSL_VERSION_PTEXT;
void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx)
{
/* ctx->cipher=NULL; */
}
+EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void)
+ {
+ EVP_CIPHER_CTX *ctx=OPENSSL_malloc(sizeof *ctx);
+ if (ctx)
+ EVP_CIPHER_CTX_init(ctx);
+ return ctx;
+ }
int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
const unsigned char *key, const unsigned char *iv, int enc)
enc = 1;
ctx->encrypt = enc;
}
+#ifndef OPENSSL_NO_ENGINE
/* Whether it's nice or not, "Inits" can be used on "Final"'d contexts
* so this context may already have an ENGINE! Try to avoid releasing
* the previous handle, re-querying for an ENGINE, and having a
if (ctx->engine && ctx->cipher && (!cipher ||
(cipher && (cipher->nid == ctx->cipher->nid))))
goto skip_to_init;
+#endif
if (cipher)
{
/* Ensure a context left lying around from last time is cleared
/* Restore encrypt field: it is zeroed by cleanup */
ctx->encrypt = enc;
+#ifndef OPENSSL_NO_ENGINE
if(impl)
{
if (!ENGINE_init(impl))
{
- EVPerr(EVP_F_EVP_CIPHERINIT, EVP_R_INITIALIZATION_ERROR);
+ EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
return 0;
}
}
* control history, is that we should at least
* be able to avoid using US mispellings of
* "initialisation"? */
- EVPerr(EVP_F_EVP_CIPHERINIT, EVP_R_INITIALIZATION_ERROR);
+ EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
return 0;
}
/* We'll use the ENGINE's private cipher definition */
}
else
ctx->engine = NULL;
+#endif
+#ifdef OPENSSL_FIPS
+ return FIPS_cipherinit(ctx, cipher, key, iv, enc);
+#else
ctx->cipher=cipher;
- ctx->cipher_data=OPENSSL_malloc(ctx->cipher->ctx_size);
+ if (ctx->cipher->ctx_size)
+ {
+ ctx->cipher_data=OPENSSL_malloc(ctx->cipher->ctx_size);
+ if (!ctx->cipher_data)
+ {
+ EVPerr(EVP_F_EVP_CIPHERINIT_EX, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ }
+ else
+ {
+ ctx->cipher_data = NULL;
+ }
ctx->key_len = cipher->key_len;
ctx->flags = 0;
if(ctx->cipher->flags & EVP_CIPH_CTRL_INIT)
{
if(!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL))
{
- EVPerr(EVP_F_EVP_CIPHERINIT, EVP_R_INITIALIZATION_ERROR);
+ EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
return 0;
}
}
+#endif
}
else if(!ctx->cipher)
{
- EVPerr(EVP_F_EVP_CIPHERINIT, EVP_R_NO_CIPHER_SET);
+ EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_NO_CIPHER_SET);
return 0;
}
+#ifndef OPENSSL_NO_ENGINE
skip_to_init:
+#endif
+#ifdef OPENSSL_FIPS
+ return FIPS_cipherinit(ctx, cipher, key, iv, enc);
+#else
/* we assume block size is a power of 2 in *cryptUpdate */
OPENSSL_assert(ctx->cipher->block_size == 1
|| ctx->cipher->block_size == 8
case EVP_CIPH_OFB_MODE:
ctx->num = 0;
+ /* fall-through */
case EVP_CIPH_CBC_MODE:
- OPENSSL_assert(EVP_CIPHER_CTX_iv_length(ctx) <= sizeof ctx->iv);
+ OPENSSL_assert(EVP_CIPHER_CTX_iv_length(ctx) <=
+ (int)sizeof(ctx->iv));
if(iv) memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
break;
+ case EVP_CIPH_CTR_MODE:
+ ctx->num = 0;
+ /* Don't reuse IV for CTR mode */
+ if(iv)
+ memcpy(ctx->iv, iv, EVP_CIPHER_CTX_iv_length(ctx));
+ break;
+
default:
return 0;
break;
ctx->final_used=0;
ctx->block_mask=ctx->cipher->block_size-1;
return 1;
+#endif
}
int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
{
int i,j,bl;
- OPENSSL_assert(inl > 0);
+ if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER)
+ {
+ i = M_do_cipher(ctx, out, in, inl);
+ if (i < 0)
+ return 0;
+ else
+ *outl = i;
+ return 1;
+ }
+
+ if (inl <= 0)
+ {
+ *outl = 0;
+ return inl == 0;
+ }
+
if(ctx->buf_len == 0 && (inl&(ctx->block_mask)) == 0)
{
- if(ctx->cipher->do_cipher(ctx,out,in,inl))
+ if(M_do_cipher(ctx,out,in,inl))
{
*outl=inl;
return 1;
}
i=ctx->buf_len;
bl=ctx->cipher->block_size;
- OPENSSL_assert(bl <= sizeof ctx->buf);
+ OPENSSL_assert(bl <= (int)sizeof(ctx->buf));
if (i != 0)
{
if (i+inl < bl)
{
j=bl-i;
memcpy(&(ctx->buf[i]),in,j);
- if(!ctx->cipher->do_cipher(ctx,out,ctx->buf,bl)) return 0;
+ if(!M_do_cipher(ctx,out,ctx->buf,bl)) return 0;
inl-=j;
in+=j;
out+=bl;
inl-=i;
if (inl > 0)
{
- if(!ctx->cipher->do_cipher(ctx,out,in,inl)) return 0;
+ if(!M_do_cipher(ctx,out,in,inl)) return 0;
*outl+=inl;
}
int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
{
- int i,n,b,bl,ret;
+ int n,ret;
+ unsigned int i, b, bl;
+
+ if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER)
+ {
+ ret = M_do_cipher(ctx, out, NULL, 0);
+ if (ret < 0)
+ return 0;
+ else
+ *outl = ret;
+ return 1;
+ }
b=ctx->cipher->block_size;
OPENSSL_assert(b <= sizeof ctx->buf);
{
if(bl)
{
- EVPerr(EVP_F_EVP_ENCRYPTFINAL,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
+ EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
return 0;
}
*outl = 0;
n=b-bl;
for (i=bl; i<b; i++)
ctx->buf[i]=n;
- ret=ctx->cipher->do_cipher(ctx,out,ctx->buf,b);
+ ret=M_do_cipher(ctx,out,ctx->buf,b);
if(ret)
int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
const unsigned char *in, int inl)
{
- int b, fix_len;
+ int fix_len;
+ unsigned int b;
- if (inl == 0)
+ if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER)
{
- *outl=0;
+ fix_len = M_do_cipher(ctx, out, in, inl);
+ if (fix_len < 0)
+ {
+ *outl = 0;
+ return 0;
+ }
+ else
+ *outl = fix_len;
return 1;
}
+ if (inl <= 0)
+ {
+ *outl = 0;
+ return inl == 0;
+ }
+
if (ctx->flags & EVP_CIPH_NO_PADDING)
return EVP_EncryptUpdate(ctx, out, outl, in, inl);
int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
{
- int i,b;
- int n;
-
+ int i,n;
+ unsigned int b;
*outl=0;
+
+ if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER)
+ {
+ i = M_do_cipher(ctx, out, NULL, 0);
+ if (i < 0)
+ return 0;
+ else
+ *outl = i;
+ return 1;
+ }
+
b=ctx->cipher->block_size;
if (ctx->flags & EVP_CIPH_NO_PADDING)
{
if(ctx->buf_len)
{
- EVPerr(EVP_F_EVP_DECRYPTFINAL,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
+ EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
return 0;
}
*outl = 0;
{
if (ctx->buf_len || !ctx->final_used)
{
- EVPerr(EVP_F_EVP_DECRYPTFINAL,EVP_R_WRONG_FINAL_BLOCK_LENGTH);
+ EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_WRONG_FINAL_BLOCK_LENGTH);
return(0);
}
OPENSSL_assert(b <= sizeof ctx->final);
n=ctx->final[b-1];
- if (n > b)
+ if (n == 0 || n > (int)b)
{
- EVPerr(EVP_F_EVP_DECRYPTFINAL,EVP_R_BAD_DECRYPT);
+ EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_BAD_DECRYPT);
return(0);
}
for (i=0; i<n; i++)
{
if (ctx->final[--b] != n)
{
- EVPerr(EVP_F_EVP_DECRYPTFINAL,EVP_R_BAD_DECRYPT);
+ EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_BAD_DECRYPT);
return(0);
}
}
return(1);
}
+void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx)
+ {
+ if (ctx)
+ {
+ EVP_CIPHER_CTX_cleanup(ctx);
+ OPENSSL_free(ctx);
+ }
+ }
+
int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c)
{
+#ifndef OPENSSL_FIPS
if (c->cipher != NULL)
{
if(c->cipher->cleanup && !c->cipher->cleanup(c))
}
if (c->cipher_data)
OPENSSL_free(c->cipher_data);
+#endif
+#ifndef OPENSSL_NO_ENGINE
if (c->engine)
/* The EVP_CIPHER we used belongs to an ENGINE, release the
* functional reference we held for this reason. */
ENGINE_finish(c->engine);
+#endif
+#ifdef OPENSSL_FIPS
+ FIPS_cipher_ctx_cleanup(c);
+#endif
memset(c,0,sizeof(EVP_CIPHER_CTX));
return 1;
}
}
return ret;
}
+
+int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key)
+ {
+ if (ctx->cipher->flags & EVP_CIPH_RAND_KEY)
+ return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_RAND_KEY, 0, key);
+ if (RAND_bytes(key, ctx->key_len) <= 0)
+ return 0;
+ return 1;
+ }
+
+int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in)
+ {
+ if ((in == NULL) || (in->cipher == NULL))
+ {
+ EVPerr(EVP_F_EVP_CIPHER_CTX_COPY,EVP_R_INPUT_NOT_INITIALIZED);
+ return 0;
+ }
+#ifndef OPENSSL_NO_ENGINE
+ /* Make sure it's safe to copy a cipher context using an ENGINE */
+ if (in->engine && !ENGINE_init(in->engine))
+ {
+ EVPerr(EVP_F_EVP_CIPHER_CTX_COPY,ERR_R_ENGINE_LIB);
+ return 0;
+ }
+#endif
+
+ EVP_CIPHER_CTX_cleanup(out);
+ memcpy(out,in,sizeof *out);
+
+ if (in->cipher_data && in->cipher->ctx_size)
+ {
+ out->cipher_data=OPENSSL_malloc(in->cipher->ctx_size);
+ if (!out->cipher_data)
+ {
+ EVPerr(EVP_F_EVP_CIPHER_CTX_COPY,ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ memcpy(out->cipher_data,in->cipher_data,in->cipher->ctx_size);
+ }
+
+ if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY)
+ return in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out);
+ return 1;
+ }
+
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