1*0Sstevel@tonic-gate /* crypto/evp/bio_enc.c */ 2*0Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate * 5*0Sstevel@tonic-gate * This package is an SSL implementation written 6*0Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com). 7*0Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as 10*0Sstevel@tonic-gate * the following conditions are aheared to. The following conditions 11*0Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA, 12*0Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13*0Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms 14*0Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15*0Sstevel@tonic-gate * 16*0Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in 17*0Sstevel@tonic-gate * the code are not to be removed. 18*0Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution 19*0Sstevel@tonic-gate * as the author of the parts of the library used. 20*0Sstevel@tonic-gate * This can be in the form of a textual message at program startup or 21*0Sstevel@tonic-gate * in documentation (online or textual) provided with the package. 22*0Sstevel@tonic-gate * 23*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 24*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 25*0Sstevel@tonic-gate * are met: 26*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright 27*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 28*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 29*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 30*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 31*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software 32*0Sstevel@tonic-gate * must display the following acknowledgement: 33*0Sstevel@tonic-gate * "This product includes cryptographic software written by 34*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)" 35*0Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library 36*0Sstevel@tonic-gate * being used are not cryptographic related :-). 37*0Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from 38*0Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement: 39*0Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40*0Sstevel@tonic-gate * 41*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51*0Sstevel@tonic-gate * SUCH DAMAGE. 52*0Sstevel@tonic-gate * 53*0Sstevel@tonic-gate * The licence and distribution terms for any publically available version or 54*0Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be 55*0Sstevel@tonic-gate * copied and put under another distribution licence 56*0Sstevel@tonic-gate * [including the GNU Public Licence.] 57*0Sstevel@tonic-gate */ 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #include <stdio.h> 60*0Sstevel@tonic-gate #include <errno.h> 61*0Sstevel@tonic-gate #include "cryptlib.h" 62*0Sstevel@tonic-gate #include <openssl/buffer.h> 63*0Sstevel@tonic-gate #include <openssl/evp.h> 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate static int enc_write(BIO *h, const char *buf, int num); 66*0Sstevel@tonic-gate static int enc_read(BIO *h, char *buf, int size); 67*0Sstevel@tonic-gate /*static int enc_puts(BIO *h, const char *str); */ 68*0Sstevel@tonic-gate /*static int enc_gets(BIO *h, char *str, int size); */ 69*0Sstevel@tonic-gate static long enc_ctrl(BIO *h, int cmd, long arg1, void *arg2); 70*0Sstevel@tonic-gate static int enc_new(BIO *h); 71*0Sstevel@tonic-gate static int enc_free(BIO *data); 72*0Sstevel@tonic-gate static long enc_callback_ctrl(BIO *h, int cmd, bio_info_cb *fps); 73*0Sstevel@tonic-gate #define ENC_BLOCK_SIZE (1024*4) 74*0Sstevel@tonic-gate #define BUF_OFFSET EVP_MAX_BLOCK_LENGTH 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate typedef struct enc_struct 77*0Sstevel@tonic-gate { 78*0Sstevel@tonic-gate int buf_len; 79*0Sstevel@tonic-gate int buf_off; 80*0Sstevel@tonic-gate int cont; /* <= 0 when finished */ 81*0Sstevel@tonic-gate int finished; 82*0Sstevel@tonic-gate int ok; /* bad decrypt */ 83*0Sstevel@tonic-gate EVP_CIPHER_CTX cipher; 84*0Sstevel@tonic-gate /* buf is larger than ENC_BLOCK_SIZE because EVP_DecryptUpdate 85*0Sstevel@tonic-gate * can return up to a block more data than is presented to it 86*0Sstevel@tonic-gate */ 87*0Sstevel@tonic-gate char buf[ENC_BLOCK_SIZE+BUF_OFFSET+2]; 88*0Sstevel@tonic-gate } BIO_ENC_CTX; 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate static BIO_METHOD methods_enc= 91*0Sstevel@tonic-gate { 92*0Sstevel@tonic-gate BIO_TYPE_CIPHER,"cipher", 93*0Sstevel@tonic-gate enc_write, 94*0Sstevel@tonic-gate enc_read, 95*0Sstevel@tonic-gate NULL, /* enc_puts, */ 96*0Sstevel@tonic-gate NULL, /* enc_gets, */ 97*0Sstevel@tonic-gate enc_ctrl, 98*0Sstevel@tonic-gate enc_new, 99*0Sstevel@tonic-gate enc_free, 100*0Sstevel@tonic-gate enc_callback_ctrl, 101*0Sstevel@tonic-gate }; 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate BIO_METHOD *BIO_f_cipher(void) 104*0Sstevel@tonic-gate { 105*0Sstevel@tonic-gate return(&methods_enc); 106*0Sstevel@tonic-gate } 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate static int enc_new(BIO *bi) 109*0Sstevel@tonic-gate { 110*0Sstevel@tonic-gate BIO_ENC_CTX *ctx; 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate ctx=(BIO_ENC_CTX *)OPENSSL_malloc(sizeof(BIO_ENC_CTX)); 113*0Sstevel@tonic-gate if (ctx == NULL) return(0); 114*0Sstevel@tonic-gate EVP_CIPHER_CTX_init(&ctx->cipher); 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate ctx->buf_len=0; 117*0Sstevel@tonic-gate ctx->buf_off=0; 118*0Sstevel@tonic-gate ctx->cont=1; 119*0Sstevel@tonic-gate ctx->finished=0; 120*0Sstevel@tonic-gate ctx->ok=1; 121*0Sstevel@tonic-gate 122*0Sstevel@tonic-gate bi->init=0; 123*0Sstevel@tonic-gate bi->ptr=(char *)ctx; 124*0Sstevel@tonic-gate bi->flags=0; 125*0Sstevel@tonic-gate return(1); 126*0Sstevel@tonic-gate } 127*0Sstevel@tonic-gate 128*0Sstevel@tonic-gate static int enc_free(BIO *a) 129*0Sstevel@tonic-gate { 130*0Sstevel@tonic-gate BIO_ENC_CTX *b; 131*0Sstevel@tonic-gate 132*0Sstevel@tonic-gate if (a == NULL) return(0); 133*0Sstevel@tonic-gate b=(BIO_ENC_CTX *)a->ptr; 134*0Sstevel@tonic-gate EVP_CIPHER_CTX_cleanup(&(b->cipher)); 135*0Sstevel@tonic-gate OPENSSL_cleanse(a->ptr,sizeof(BIO_ENC_CTX)); 136*0Sstevel@tonic-gate OPENSSL_free(a->ptr); 137*0Sstevel@tonic-gate a->ptr=NULL; 138*0Sstevel@tonic-gate a->init=0; 139*0Sstevel@tonic-gate a->flags=0; 140*0Sstevel@tonic-gate return(1); 141*0Sstevel@tonic-gate } 142*0Sstevel@tonic-gate 143*0Sstevel@tonic-gate static int enc_read(BIO *b, char *out, int outl) 144*0Sstevel@tonic-gate { 145*0Sstevel@tonic-gate int ret=0,i; 146*0Sstevel@tonic-gate BIO_ENC_CTX *ctx; 147*0Sstevel@tonic-gate 148*0Sstevel@tonic-gate if (out == NULL) return(0); 149*0Sstevel@tonic-gate ctx=(BIO_ENC_CTX *)b->ptr; 150*0Sstevel@tonic-gate 151*0Sstevel@tonic-gate if ((ctx == NULL) || (b->next_bio == NULL)) return(0); 152*0Sstevel@tonic-gate 153*0Sstevel@tonic-gate /* First check if there are bytes decoded/encoded */ 154*0Sstevel@tonic-gate if (ctx->buf_len > 0) 155*0Sstevel@tonic-gate { 156*0Sstevel@tonic-gate i=ctx->buf_len-ctx->buf_off; 157*0Sstevel@tonic-gate if (i > outl) i=outl; 158*0Sstevel@tonic-gate memcpy(out,&(ctx->buf[ctx->buf_off]),i); 159*0Sstevel@tonic-gate ret=i; 160*0Sstevel@tonic-gate out+=i; 161*0Sstevel@tonic-gate outl-=i; 162*0Sstevel@tonic-gate ctx->buf_off+=i; 163*0Sstevel@tonic-gate if (ctx->buf_len == ctx->buf_off) 164*0Sstevel@tonic-gate { 165*0Sstevel@tonic-gate ctx->buf_len=0; 166*0Sstevel@tonic-gate ctx->buf_off=0; 167*0Sstevel@tonic-gate } 168*0Sstevel@tonic-gate } 169*0Sstevel@tonic-gate 170*0Sstevel@tonic-gate /* At this point, we have room of outl bytes and an empty 171*0Sstevel@tonic-gate * buffer, so we should read in some more. */ 172*0Sstevel@tonic-gate 173*0Sstevel@tonic-gate while (outl > 0) 174*0Sstevel@tonic-gate { 175*0Sstevel@tonic-gate if (ctx->cont <= 0) break; 176*0Sstevel@tonic-gate 177*0Sstevel@tonic-gate /* read in at IV offset, read the EVP_Cipher 178*0Sstevel@tonic-gate * documentation about why */ 179*0Sstevel@tonic-gate i=BIO_read(b->next_bio,&(ctx->buf[BUF_OFFSET]),ENC_BLOCK_SIZE); 180*0Sstevel@tonic-gate 181*0Sstevel@tonic-gate if (i <= 0) 182*0Sstevel@tonic-gate { 183*0Sstevel@tonic-gate /* Should be continue next time we are called? */ 184*0Sstevel@tonic-gate if (!BIO_should_retry(b->next_bio)) 185*0Sstevel@tonic-gate { 186*0Sstevel@tonic-gate ctx->cont=i; 187*0Sstevel@tonic-gate i=EVP_CipherFinal_ex(&(ctx->cipher), 188*0Sstevel@tonic-gate (unsigned char *)ctx->buf, 189*0Sstevel@tonic-gate &(ctx->buf_len)); 190*0Sstevel@tonic-gate ctx->ok=i; 191*0Sstevel@tonic-gate ctx->buf_off=0; 192*0Sstevel@tonic-gate } 193*0Sstevel@tonic-gate else 194*0Sstevel@tonic-gate { 195*0Sstevel@tonic-gate ret=(ret == 0)?i:ret; 196*0Sstevel@tonic-gate break; 197*0Sstevel@tonic-gate } 198*0Sstevel@tonic-gate } 199*0Sstevel@tonic-gate else 200*0Sstevel@tonic-gate { 201*0Sstevel@tonic-gate EVP_CipherUpdate(&(ctx->cipher), 202*0Sstevel@tonic-gate (unsigned char *)ctx->buf,&ctx->buf_len, 203*0Sstevel@tonic-gate (unsigned char *)&(ctx->buf[BUF_OFFSET]),i); 204*0Sstevel@tonic-gate ctx->cont=1; 205*0Sstevel@tonic-gate /* Note: it is possible for EVP_CipherUpdate to 206*0Sstevel@tonic-gate * decrypt zero bytes because this is or looks like 207*0Sstevel@tonic-gate * the final block: if this happens we should retry 208*0Sstevel@tonic-gate * and either read more data or decrypt the final 209*0Sstevel@tonic-gate * block 210*0Sstevel@tonic-gate */ 211*0Sstevel@tonic-gate if(ctx->buf_len == 0) continue; 212*0Sstevel@tonic-gate } 213*0Sstevel@tonic-gate 214*0Sstevel@tonic-gate if (ctx->buf_len <= outl) 215*0Sstevel@tonic-gate i=ctx->buf_len; 216*0Sstevel@tonic-gate else 217*0Sstevel@tonic-gate i=outl; 218*0Sstevel@tonic-gate if (i <= 0) break; 219*0Sstevel@tonic-gate memcpy(out,ctx->buf,i); 220*0Sstevel@tonic-gate ret+=i; 221*0Sstevel@tonic-gate ctx->buf_off=i; 222*0Sstevel@tonic-gate outl-=i; 223*0Sstevel@tonic-gate out+=i; 224*0Sstevel@tonic-gate } 225*0Sstevel@tonic-gate 226*0Sstevel@tonic-gate BIO_clear_retry_flags(b); 227*0Sstevel@tonic-gate BIO_copy_next_retry(b); 228*0Sstevel@tonic-gate return((ret == 0)?ctx->cont:ret); 229*0Sstevel@tonic-gate } 230*0Sstevel@tonic-gate 231*0Sstevel@tonic-gate static int enc_write(BIO *b, const char *in, int inl) 232*0Sstevel@tonic-gate { 233*0Sstevel@tonic-gate int ret=0,n,i; 234*0Sstevel@tonic-gate BIO_ENC_CTX *ctx; 235*0Sstevel@tonic-gate 236*0Sstevel@tonic-gate ctx=(BIO_ENC_CTX *)b->ptr; 237*0Sstevel@tonic-gate ret=inl; 238*0Sstevel@tonic-gate 239*0Sstevel@tonic-gate BIO_clear_retry_flags(b); 240*0Sstevel@tonic-gate n=ctx->buf_len-ctx->buf_off; 241*0Sstevel@tonic-gate while (n > 0) 242*0Sstevel@tonic-gate { 243*0Sstevel@tonic-gate i=BIO_write(b->next_bio,&(ctx->buf[ctx->buf_off]),n); 244*0Sstevel@tonic-gate if (i <= 0) 245*0Sstevel@tonic-gate { 246*0Sstevel@tonic-gate BIO_copy_next_retry(b); 247*0Sstevel@tonic-gate return(i); 248*0Sstevel@tonic-gate } 249*0Sstevel@tonic-gate ctx->buf_off+=i; 250*0Sstevel@tonic-gate n-=i; 251*0Sstevel@tonic-gate } 252*0Sstevel@tonic-gate /* at this point all pending data has been written */ 253*0Sstevel@tonic-gate 254*0Sstevel@tonic-gate if ((in == NULL) || (inl <= 0)) return(0); 255*0Sstevel@tonic-gate 256*0Sstevel@tonic-gate ctx->buf_off=0; 257*0Sstevel@tonic-gate while (inl > 0) 258*0Sstevel@tonic-gate { 259*0Sstevel@tonic-gate n=(inl > ENC_BLOCK_SIZE)?ENC_BLOCK_SIZE:inl; 260*0Sstevel@tonic-gate EVP_CipherUpdate(&(ctx->cipher), 261*0Sstevel@tonic-gate (unsigned char *)ctx->buf,&ctx->buf_len, 262*0Sstevel@tonic-gate (unsigned char *)in,n); 263*0Sstevel@tonic-gate inl-=n; 264*0Sstevel@tonic-gate in+=n; 265*0Sstevel@tonic-gate 266*0Sstevel@tonic-gate ctx->buf_off=0; 267*0Sstevel@tonic-gate n=ctx->buf_len; 268*0Sstevel@tonic-gate while (n > 0) 269*0Sstevel@tonic-gate { 270*0Sstevel@tonic-gate i=BIO_write(b->next_bio,&(ctx->buf[ctx->buf_off]),n); 271*0Sstevel@tonic-gate if (i <= 0) 272*0Sstevel@tonic-gate { 273*0Sstevel@tonic-gate BIO_copy_next_retry(b); 274*0Sstevel@tonic-gate return (ret == inl) ? i : ret - inl; 275*0Sstevel@tonic-gate } 276*0Sstevel@tonic-gate n-=i; 277*0Sstevel@tonic-gate ctx->buf_off+=i; 278*0Sstevel@tonic-gate } 279*0Sstevel@tonic-gate ctx->buf_len=0; 280*0Sstevel@tonic-gate ctx->buf_off=0; 281*0Sstevel@tonic-gate } 282*0Sstevel@tonic-gate BIO_copy_next_retry(b); 283*0Sstevel@tonic-gate return(ret); 284*0Sstevel@tonic-gate } 285*0Sstevel@tonic-gate 286*0Sstevel@tonic-gate static long enc_ctrl(BIO *b, int cmd, long num, void *ptr) 287*0Sstevel@tonic-gate { 288*0Sstevel@tonic-gate BIO *dbio; 289*0Sstevel@tonic-gate BIO_ENC_CTX *ctx,*dctx; 290*0Sstevel@tonic-gate long ret=1; 291*0Sstevel@tonic-gate int i; 292*0Sstevel@tonic-gate EVP_CIPHER_CTX **c_ctx; 293*0Sstevel@tonic-gate 294*0Sstevel@tonic-gate ctx=(BIO_ENC_CTX *)b->ptr; 295*0Sstevel@tonic-gate 296*0Sstevel@tonic-gate switch (cmd) 297*0Sstevel@tonic-gate { 298*0Sstevel@tonic-gate case BIO_CTRL_RESET: 299*0Sstevel@tonic-gate ctx->ok=1; 300*0Sstevel@tonic-gate ctx->finished=0; 301*0Sstevel@tonic-gate EVP_CipherInit_ex(&(ctx->cipher),NULL,NULL,NULL,NULL, 302*0Sstevel@tonic-gate ctx->cipher.encrypt); 303*0Sstevel@tonic-gate ret=BIO_ctrl(b->next_bio,cmd,num,ptr); 304*0Sstevel@tonic-gate break; 305*0Sstevel@tonic-gate case BIO_CTRL_EOF: /* More to read */ 306*0Sstevel@tonic-gate if (ctx->cont <= 0) 307*0Sstevel@tonic-gate ret=1; 308*0Sstevel@tonic-gate else 309*0Sstevel@tonic-gate ret=BIO_ctrl(b->next_bio,cmd,num,ptr); 310*0Sstevel@tonic-gate break; 311*0Sstevel@tonic-gate case BIO_CTRL_WPENDING: 312*0Sstevel@tonic-gate ret=ctx->buf_len-ctx->buf_off; 313*0Sstevel@tonic-gate if (ret <= 0) 314*0Sstevel@tonic-gate ret=BIO_ctrl(b->next_bio,cmd,num,ptr); 315*0Sstevel@tonic-gate break; 316*0Sstevel@tonic-gate case BIO_CTRL_PENDING: /* More to read in buffer */ 317*0Sstevel@tonic-gate ret=ctx->buf_len-ctx->buf_off; 318*0Sstevel@tonic-gate if (ret <= 0) 319*0Sstevel@tonic-gate ret=BIO_ctrl(b->next_bio,cmd,num,ptr); 320*0Sstevel@tonic-gate break; 321*0Sstevel@tonic-gate case BIO_CTRL_FLUSH: 322*0Sstevel@tonic-gate /* do a final write */ 323*0Sstevel@tonic-gate again: 324*0Sstevel@tonic-gate while (ctx->buf_len != ctx->buf_off) 325*0Sstevel@tonic-gate { 326*0Sstevel@tonic-gate i=enc_write(b,NULL,0); 327*0Sstevel@tonic-gate if (i < 0) 328*0Sstevel@tonic-gate return i; 329*0Sstevel@tonic-gate } 330*0Sstevel@tonic-gate 331*0Sstevel@tonic-gate if (!ctx->finished) 332*0Sstevel@tonic-gate { 333*0Sstevel@tonic-gate ctx->finished=1; 334*0Sstevel@tonic-gate ctx->buf_off=0; 335*0Sstevel@tonic-gate ret=EVP_CipherFinal_ex(&(ctx->cipher), 336*0Sstevel@tonic-gate (unsigned char *)ctx->buf, 337*0Sstevel@tonic-gate &(ctx->buf_len)); 338*0Sstevel@tonic-gate ctx->ok=(int)ret; 339*0Sstevel@tonic-gate if (ret <= 0) break; 340*0Sstevel@tonic-gate 341*0Sstevel@tonic-gate /* push out the bytes */ 342*0Sstevel@tonic-gate goto again; 343*0Sstevel@tonic-gate } 344*0Sstevel@tonic-gate 345*0Sstevel@tonic-gate /* Finally flush the underlying BIO */ 346*0Sstevel@tonic-gate ret=BIO_ctrl(b->next_bio,cmd,num,ptr); 347*0Sstevel@tonic-gate break; 348*0Sstevel@tonic-gate case BIO_C_GET_CIPHER_STATUS: 349*0Sstevel@tonic-gate ret=(long)ctx->ok; 350*0Sstevel@tonic-gate break; 351*0Sstevel@tonic-gate case BIO_C_DO_STATE_MACHINE: 352*0Sstevel@tonic-gate BIO_clear_retry_flags(b); 353*0Sstevel@tonic-gate ret=BIO_ctrl(b->next_bio,cmd,num,ptr); 354*0Sstevel@tonic-gate BIO_copy_next_retry(b); 355*0Sstevel@tonic-gate break; 356*0Sstevel@tonic-gate case BIO_C_GET_CIPHER_CTX: 357*0Sstevel@tonic-gate c_ctx=(EVP_CIPHER_CTX **)ptr; 358*0Sstevel@tonic-gate (*c_ctx)= &(ctx->cipher); 359*0Sstevel@tonic-gate b->init=1; 360*0Sstevel@tonic-gate break; 361*0Sstevel@tonic-gate case BIO_CTRL_DUP: 362*0Sstevel@tonic-gate dbio=(BIO *)ptr; 363*0Sstevel@tonic-gate dctx=(BIO_ENC_CTX *)dbio->ptr; 364*0Sstevel@tonic-gate memcpy(&(dctx->cipher),&(ctx->cipher),sizeof(ctx->cipher)); 365*0Sstevel@tonic-gate dbio->init=1; 366*0Sstevel@tonic-gate break; 367*0Sstevel@tonic-gate default: 368*0Sstevel@tonic-gate ret=BIO_ctrl(b->next_bio,cmd,num,ptr); 369*0Sstevel@tonic-gate break; 370*0Sstevel@tonic-gate } 371*0Sstevel@tonic-gate return(ret); 372*0Sstevel@tonic-gate } 373*0Sstevel@tonic-gate 374*0Sstevel@tonic-gate static long enc_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp) 375*0Sstevel@tonic-gate { 376*0Sstevel@tonic-gate long ret=1; 377*0Sstevel@tonic-gate 378*0Sstevel@tonic-gate if (b->next_bio == NULL) return(0); 379*0Sstevel@tonic-gate switch (cmd) 380*0Sstevel@tonic-gate { 381*0Sstevel@tonic-gate default: 382*0Sstevel@tonic-gate ret=BIO_callback_ctrl(b->next_bio,cmd,fp); 383*0Sstevel@tonic-gate break; 384*0Sstevel@tonic-gate } 385*0Sstevel@tonic-gate return(ret); 386*0Sstevel@tonic-gate } 387*0Sstevel@tonic-gate 388*0Sstevel@tonic-gate /* 389*0Sstevel@tonic-gate void BIO_set_cipher_ctx(b,c) 390*0Sstevel@tonic-gate BIO *b; 391*0Sstevel@tonic-gate EVP_CIPHER_ctx *c; 392*0Sstevel@tonic-gate { 393*0Sstevel@tonic-gate if (b == NULL) return; 394*0Sstevel@tonic-gate 395*0Sstevel@tonic-gate if ((b->callback != NULL) && 396*0Sstevel@tonic-gate (b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,0L) <= 0)) 397*0Sstevel@tonic-gate return; 398*0Sstevel@tonic-gate 399*0Sstevel@tonic-gate b->init=1; 400*0Sstevel@tonic-gate ctx=(BIO_ENC_CTX *)b->ptr; 401*0Sstevel@tonic-gate memcpy(ctx->cipher,c,sizeof(EVP_CIPHER_CTX)); 402*0Sstevel@tonic-gate 403*0Sstevel@tonic-gate if (b->callback != NULL) 404*0Sstevel@tonic-gate b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,1L); 405*0Sstevel@tonic-gate } 406*0Sstevel@tonic-gate */ 407*0Sstevel@tonic-gate 408*0Sstevel@tonic-gate void BIO_set_cipher(BIO *b, const EVP_CIPHER *c, unsigned char *k, 409*0Sstevel@tonic-gate unsigned char *i, int e) 410*0Sstevel@tonic-gate { 411*0Sstevel@tonic-gate BIO_ENC_CTX *ctx; 412*0Sstevel@tonic-gate 413*0Sstevel@tonic-gate if (b == NULL) return; 414*0Sstevel@tonic-gate 415*0Sstevel@tonic-gate if ((b->callback != NULL) && 416*0Sstevel@tonic-gate (b->callback(b,BIO_CB_CTRL,(const char *)c,BIO_CTRL_SET,e,0L) <= 0)) 417*0Sstevel@tonic-gate return; 418*0Sstevel@tonic-gate 419*0Sstevel@tonic-gate b->init=1; 420*0Sstevel@tonic-gate ctx=(BIO_ENC_CTX *)b->ptr; 421*0Sstevel@tonic-gate EVP_CipherInit_ex(&(ctx->cipher),c,NULL, k,i,e); 422*0Sstevel@tonic-gate 423*0Sstevel@tonic-gate if (b->callback != NULL) 424*0Sstevel@tonic-gate b->callback(b,BIO_CB_CTRL,(const char *)c,BIO_CTRL_SET,e,1L); 425*0Sstevel@tonic-gate } 426*0Sstevel@tonic-gate 427