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path: root/openssl/crypto/evp/evp_enc.c
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Diffstat (limited to 'openssl/crypto/evp/evp_enc.c')
-rw-r--r--openssl/crypto/evp/evp_enc.c95
1 files changed, 86 insertions, 9 deletions
diff --git a/openssl/crypto/evp/evp_enc.c b/openssl/crypto/evp/evp_enc.c
index c268d25cb..691072655 100644
--- a/openssl/crypto/evp/evp_enc.c
+++ b/openssl/crypto/evp/evp_enc.c
@@ -64,8 +64,18 @@
#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif
+#ifdef OPENSSL_FIPS
+#include <openssl/fips.h>
+#endif
#include "evp_locl.h"
+#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)
@@ -115,10 +125,14 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *imp
/* Ensure a context left lying around from last time is cleared
* (the previous check attempted to avoid this if the same
* ENGINE and EVP_CIPHER could be used). */
- EVP_CIPHER_CTX_cleanup(ctx);
-
- /* Restore encrypt field: it is zeroed by cleanup */
- ctx->encrypt = enc;
+ if (ctx->cipher)
+ {
+ unsigned long flags = ctx->flags;
+ EVP_CIPHER_CTX_cleanup(ctx);
+ /* Restore encrypt and flags */
+ ctx->encrypt = enc;
+ ctx->flags = flags;
+ }
#ifndef OPENSSL_NO_ENGINE
if(impl)
{
@@ -155,6 +169,9 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *imp
ctx->engine = NULL;
#endif
+#ifdef OPENSSL_FIPS
+ return FIPS_cipherinit(ctx, cipher, key, iv, enc);
+#else
ctx->cipher=cipher;
if (ctx->cipher->ctx_size)
{
@@ -179,6 +196,7 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *imp
return 0;
}
}
+#endif
}
else if(!ctx->cipher)
{
@@ -188,6 +206,9 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *imp
#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
@@ -214,6 +235,13 @@ skip_to_init:
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;
@@ -227,6 +255,7 @@ skip_to_init:
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,
@@ -280,6 +309,16 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
{
int i,j,bl;
+ 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;
@@ -288,7 +327,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
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;
@@ -315,7 +354,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
{
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;
@@ -328,7 +367,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
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;
}
@@ -350,6 +389,16 @@ int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
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 (b == 1)
@@ -372,7 +421,7 @@ int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
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)
@@ -387,6 +436,19 @@ int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
int fix_len;
unsigned int b;
+ if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER)
+ {
+ 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;
@@ -440,8 +502,18 @@ int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
{
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)
{
@@ -496,6 +568,7 @@ void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *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))
@@ -506,12 +579,16 @@ int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *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;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-09 04:30:17 +0000