* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
- *
+ *
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
+ *
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
- *
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
+ * 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
+ *
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
- *
+ *
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
*/
#include <stdio.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#ifndef OPENSSL_NO_DES
-#include <openssl/evp.h>
-#include <openssl/objects.h>
-#include "evp_locl.h"
-#include <openssl/des.h>
-#include <openssl/rand.h>
+# 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[3];
+ } ks;
+ union {
+ void (*cbc) (const void *, void *, size_t, const void *, void *);
+ } stream;
+} DES_EDE_KEY;
+# define ks1 ks.ks[0]
+# define ks2 ks.ks[1]
+# define ks3 ks.ks[2]
+
+# 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_ede3_cbc_encrypt(const void *inp, void *out, size_t len,
+ DES_key_schedule *ks, unsigned char iv[8]);
+void des_t4_ede3_cbc_decrypt(const void *inp, void *out, size_t len,
+ DES_key_schedule *ks, unsigned char iv[8]);
+# endif
static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv,int enc);
+ const unsigned char *iv, int enc);
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv,int enc);
+ const unsigned char *iv, int enc);
static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
-typedef struct
- {
- DES_key_schedule ks1;/* key schedule */
- DES_key_schedule ks2;/* key schedule (for ede) */
- DES_key_schedule ks3;/* key schedule (for ede3) */
- } DES_EDE_KEY;
+# define data(ctx) EVP_C_DATA(DES_EDE_KEY,ctx)
-#define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
-
-/* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
+/*
+ * Because of various casts and different args can't use
+ * IMPLEMENT_BLOCK_CIPHER
+ */
static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
+ const unsigned char *in, size_t inl)
{
- BLOCK_CIPHER_ecb_loop()
- DES_ecb3_encrypt((const_DES_cblock *)(in + i),
- (DES_cblock *)(out + i),
- &data(ctx)->ks1, &data(ctx)->ks2,
- &data(ctx)->ks3,
- ctx->encrypt);
- return 1;
+ BLOCK_CIPHER_ecb_loop()
+ DES_ecb3_encrypt((const_DES_cblock *)(in + i),
+ (DES_cblock *)(out + i),
+ &data(ctx)->ks1, &data(ctx)->ks2,
+ &data(ctx)->ks3, EVP_CIPHER_CTX_encrypting(ctx));
+ return 1;
}
static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
+ const unsigned char *in, size_t inl)
{
- if (inl>=EVP_MAXCHUNK)
- {
- DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
- &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
- (DES_cblock *)ctx->iv, &ctx->num);
- inl-=EVP_MAXCHUNK;
- in +=EVP_MAXCHUNK;
- out+=EVP_MAXCHUNK;
- }
- if (inl)
- DES_ede3_ofb64_encrypt(in, out, (long)inl,
- &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
- (DES_cblock *)ctx->iv, &ctx->num);
-
- return 1;
+ while (inl >= EVP_MAXCHUNK) {
+ int num = EVP_CIPHER_CTX_num(ctx);
+ DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
+ &data(ctx)->ks1, &data(ctx)->ks2,
+ &data(ctx)->ks3,
+ (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_ede3_ofb64_encrypt(in, out, (long)inl,
+ &data(ctx)->ks1, &data(ctx)->ks2,
+ &data(ctx)->ks3,
+ (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
+ &num);
+ EVP_CIPHER_CTX_set_num(ctx, num);
+ }
+ return 1;
}
static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
+ const unsigned char *in, size_t inl)
{
-#ifdef KSSL_DEBUG
- {
- int i;
- char *cp;
- printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", ctx, ctx->buf_len);
- printf("\t iv= ");
- for(i=0;i<8;i++)
- printf("%02X",ctx->iv[i]);
- printf("\n");
- }
-#endif /* KSSL_DEBUG */
- if (inl>=EVP_MAXCHUNK)
- {
- DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
- &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
- (DES_cblock *)ctx->iv, ctx->encrypt);
- inl-=EVP_MAXCHUNK;
- in +=EVP_MAXCHUNK;
- out+=EVP_MAXCHUNK;
- }
- if (inl)
- DES_ede3_cbc_encrypt(in, out, (long)inl,
- &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
- (DES_cblock *)ctx->iv, ctx->encrypt);
- return 1;
+ DES_EDE_KEY *dat = data(ctx);
+
+ if (dat->stream.cbc) {
+ (*dat->stream.cbc) (in, out, inl, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx));
+ return 1;
+ }
+
+ while (inl >= EVP_MAXCHUNK) {
+ DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
+ &dat->ks1, &dat->ks2, &dat->ks3,
+ (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_ede3_cbc_encrypt(in, out, (long)inl,
+ &dat->ks1, &dat->ks2, &dat->ks3,
+ (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));
+ return 1;
}
static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
+ const unsigned char *in, size_t inl)
{
- if (inl>=EVP_MAXCHUNK)
- {
- DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
- &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
- (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
- inl-=EVP_MAXCHUNK;
- in +=EVP_MAXCHUNK;
- out+=EVP_MAXCHUNK;
- }
- if (inl)
- DES_ede3_cfb64_encrypt(in, out, (long)inl,
- &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
- (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
- return 1;
+ while (inl >= EVP_MAXCHUNK) {
+ int num = EVP_CIPHER_CTX_num(ctx);
+ DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
+ &data(ctx)->ks1, &data(ctx)->ks2,
+ &data(ctx)->ks3,
+ (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_ede3_cfb64_encrypt(in, out, (long)inl,
+ &data(ctx)->ks1, &data(ctx)->ks2,
+ &data(ctx)->ks3,
+ (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 3-DES, it doesn't pack the right
- way, so wrap it here */
+/*
+ * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
+ * right way, so wrap it here
+ */
static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
- {
+ const unsigned char *in, size_t inl)
+{
size_t n;
- unsigned char c[1],d[1];
+ unsigned char c[1], d[1];
- for(n=0 ; n < inl ; ++n)
- {
- c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
- DES_ede3_cfb_encrypt(c,d,1,1,
- &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
- (DES_cblock *)ctx->iv,ctx->encrypt);
- out[n/8]=(out[n/8]&~(0x80 >> (n%8)))|((d[0]&0x80) >> (n%8));
- }
+ for (n = 0; n < inl; ++n) {
+ c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
+ DES_ede3_cfb_encrypt(c, d, 1, 1,
+ &data(ctx)->ks1, &data(ctx)->ks2,
+ &data(ctx)->ks3, (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));
+ }
return 1;
- }
+}
static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
- {
- while (inl>=EVP_MAXCHUNK)
- {
- DES_ede3_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,
- &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
- (DES_cblock *)ctx->iv,ctx->encrypt);
- inl-=EVP_MAXCHUNK;
- in +=EVP_MAXCHUNK;
- out+=EVP_MAXCHUNK;
- }
+ const unsigned char *in, size_t inl)
+{
+ while (inl >= EVP_MAXCHUNK) {
+ DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
+ &data(ctx)->ks1, &data(ctx)->ks2,
+ &data(ctx)->ks3, (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_ede3_cfb_encrypt(in,out,8,(long)inl,
- &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
- (DES_cblock *)ctx->iv,ctx->encrypt);
+ DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
+ &data(ctx)->ks1, &data(ctx)->ks2,
+ &data(ctx)->ks3, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
+ EVP_CIPHER_CTX_encrypting(ctx));
return 1;
- }
+}
BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
- EVP_CIPH_RAND_KEY, des_ede_init_key, NULL,
- EVP_CIPHER_set_asn1_iv,
- EVP_CIPHER_get_asn1_iv,
- des3_ctrl)
-
-#define des_ede3_cfb64_cipher des_ede_cfb64_cipher
-#define des_ede3_ofb_cipher des_ede_ofb_cipher
-#define des_ede3_cbc_cipher des_ede_cbc_cipher
-#define des_ede3_ecb_cipher des_ede_ecb_cipher
-
-BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
- EVP_CIPH_RAND_KEY, des_ede3_init_key, NULL,
- EVP_CIPHER_set_asn1_iv,
- EVP_CIPHER_get_asn1_iv,
- des3_ctrl)
-
-BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
- EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
- EVP_CIPHER_set_asn1_iv,
- EVP_CIPHER_get_asn1_iv,
- des3_ctrl)
-
-BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
- EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
- EVP_CIPHER_set_asn1_iv,
- EVP_CIPHER_get_asn1_iv,
- des3_ctrl)
+ EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
+ des_ede_init_key, NULL, NULL, NULL, des3_ctrl)
+# define des_ede3_cfb64_cipher des_ede_cfb64_cipher
+# define des_ede3_ofb_cipher des_ede_ofb_cipher
+# define des_ede3_cbc_cipher des_ede_cbc_cipher
+# define des_ede3_ecb_cipher des_ede_ecb_cipher
+ BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
+ EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
+ des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
+
+ BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1,
+ EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
+ des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
+
+ BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8,
+ EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1,
+ des_ede3_init_key, NULL, NULL, NULL, des3_ctrl)
static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
- {
- DES_cblock *deskey = (DES_cblock *)key;
-#ifdef EVP_CHECK_DES_KEY
- if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
- !! DES_set_key_checked(&deskey[1],&data(ctx)->ks2))
- return 0;
-#else
- DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
- DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
-#endif
- memcpy(&data(ctx)->ks3,&data(ctx)->ks1,
- sizeof(data(ctx)->ks1));
- return 1;
- }
+ const unsigned char *iv, int enc)
+{
+ DES_cblock *deskey = (DES_cblock *)key;
+ DES_EDE_KEY *dat = 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(&deskey[0], &dat->ks1);
+ des_t4_key_expand(&deskey[1], &dat->ks2);
+ memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
+ dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
+ des_t4_ede3_cbc_decrypt;
+ return 1;
+ }
+ }
+# endif
+ DES_set_key_unchecked(&deskey[0], &dat->ks1);
+ DES_set_key_unchecked(&deskey[1], &dat->ks2);
+ memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1));
+ return 1;
+}
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
- {
- DES_cblock *deskey = (DES_cblock *)key;
-#ifdef KSSL_DEBUG
- {
- int i;
- printf("des_ede3_init_key(ctx=%lx)\n", ctx);
- printf("\tKEY= ");
- for(i=0;i<24;i++) printf("%02X",key[i]); printf("\n");
- printf("\t IV= ");
- for(i=0;i<8;i++) printf("%02X",iv[i]); printf("\n");
- }
-#endif /* KSSL_DEBUG */
-
-#ifdef EVP_CHECK_DES_KEY
- if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
- || DES_set_key_checked(&deskey[1],&data(ctx)->ks2)
- || DES_set_key_checked(&deskey[2],&data(ctx)->ks3))
- return 0;
-#else
- DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
- DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
- DES_set_key_unchecked(&deskey[2],&data(ctx)->ks3);
-#endif
- return 1;
- }
-
-static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
- {
-
- DES_cblock *deskey = ptr;
-
- switch(type)
- {
- case EVP_CTRL_RAND_KEY:
- if (RAND_bytes(ptr, c->key_len) <= 0)
- return 0;
- DES_set_odd_parity(deskey);
- if (c->key_len >= 16)
- DES_set_odd_parity(deskey + 1);
- if (c->key_len >= 24)
- DES_set_odd_parity(deskey + 2);
- return 1;
-
- default:
- return -1;
- }
- }
+ const unsigned char *iv, int enc)
+{
+ DES_cblock *deskey = (DES_cblock *)key;
+ DES_EDE_KEY *dat = 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(&deskey[0], &dat->ks1);
+ des_t4_key_expand(&deskey[1], &dat->ks2);
+ des_t4_key_expand(&deskey[2], &dat->ks3);
+ dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt :
+ des_t4_ede3_cbc_decrypt;
+ return 1;
+ }
+ }
+# endif
+ DES_set_key_unchecked(&deskey[0], &dat->ks1);
+ DES_set_key_unchecked(&deskey[1], &dat->ks2);
+ DES_set_key_unchecked(&deskey[2], &dat->ks3);
+ return 1;
+}
+
+static int des3_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
+{
+
+ DES_cblock *deskey = ptr;
+
+ switch (type) {
+ case EVP_CTRL_RAND_KEY:
+ if (RAND_bytes(ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0)
+ return 0;
+ DES_set_odd_parity(deskey);
+ if (EVP_CIPHER_CTX_key_length(ctx) >= 16)
+ DES_set_odd_parity(deskey + 1);
+ if (EVP_CIPHER_CTX_key_length(ctx) >= 24)
+ DES_set_odd_parity(deskey + 2);
+ return 1;
+
+ default:
+ return -1;
+ }
+}
const EVP_CIPHER *EVP_des_ede(void)
{
- return &des_ede_ecb;
+ return &des_ede_ecb;
}
const EVP_CIPHER *EVP_des_ede3(void)
{
- return &des_ede3_ecb;
+ return &des_ede3_ecb;
+}
+
+
+# include <openssl/sha.h>
+
+static const unsigned char wrap_iv[8] =
+ { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 };
+
+static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+{
+ unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH];
+ int rv = -1;
+ if (inl < 24)
+ return -1;
+ if (!out)
+ return inl - 16;
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
+ /* Decrypt first block which will end up as icv */
+ des_ede_cbc_cipher(ctx, icv, in, 8);
+ /* Decrypt central blocks */
+ /*
+ * If decrypting in place move whole output along a block so the next
+ * des_ede_cbc_cipher is in place.
+ */
+ if (out == in) {
+ memmove(out, out + 8, inl - 8);
+ in -= 8;
+ }
+ des_ede_cbc_cipher(ctx, out, in + 8, inl - 16);
+ /* Decrypt final block which will be IV */
+ des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8);
+ /* Reverse order of everything */
+ BUF_reverse(icv, NULL, 8);
+ BUF_reverse(out, NULL, inl - 16);
+ BUF_reverse(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 8);
+ /* Decrypt again using new IV */
+ des_ede_cbc_cipher(ctx, out, out, inl - 16);
+ des_ede_cbc_cipher(ctx, icv, icv, 8);
+ /* Work out SHA1 hash of first portion */
+ SHA1(out, inl - 16, sha1tmp);
+
+ if (!CRYPTO_memcmp(sha1tmp, icv, 8))
+ rv = inl - 16;
+ OPENSSL_cleanse(icv, 8);
+ OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
+ OPENSSL_cleanse(iv, 8);
+ OPENSSL_cleanse(EVP_CIPHER_CTX_iv_noconst(ctx), 8);
+ if (rv == -1)
+ OPENSSL_cleanse(out, inl - 16);
+
+ return rv;
}
+
+static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+{
+ unsigned char sha1tmp[SHA_DIGEST_LENGTH];
+ if (!out)
+ return inl + 16;
+ /* Copy input to output buffer + 8 so we have space for IV */
+ memmove(out + 8, in, inl);
+ /* Work out ICV */
+ SHA1(in, inl, sha1tmp);
+ memcpy(out + inl + 8, sha1tmp, 8);
+ OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH);
+ /* Generate random IV */
+ if (RAND_bytes(EVP_CIPHER_CTX_iv_noconst(ctx), 8) <= 0)
+ return -1;
+ memcpy(out, EVP_CIPHER_CTX_iv_noconst(ctx), 8);
+ /* Encrypt everything after IV in place */
+ des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8);
+ BUF_reverse(out, NULL, inl + 16);
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8);
+ des_ede_cbc_cipher(ctx, out, out, inl + 16);
+ return inl + 16;
+}
+
+static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+{
+ /*
+ * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK
+ * is more than will ever be needed. Also input length must be a multiple
+ * of 8 bits.
+ */
+ if (inl >= EVP_MAXCHUNK || inl % 8)
+ return -1;
+ if (EVP_CIPHER_CTX_encrypting(ctx))
+ return des_ede3_wrap(ctx, out, in, inl);
+ else
+ return des_ede3_unwrap(ctx, out, in, inl);
+}
+
+static const EVP_CIPHER des3_wrap = {
+ NID_id_smime_alg_CMS3DESwrap,
+ 8, 24, 0,
+ EVP_CIPH_WRAP_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
+ | EVP_CIPH_FLAG_DEFAULT_ASN1,
+ des_ede3_init_key, des_ede3_wrap_cipher,
+ NULL,
+ sizeof(DES_EDE_KEY),
+ NULL, NULL, NULL, NULL
+};
+
+const EVP_CIPHER *EVP_des_ede3_wrap(void)
+{
+ return &des3_wrap;
+}
+
#endif
projects / openssl.git / blobdiff