diff options
Diffstat (limited to 'thirdparty/openssl/crypto/evp/bio_enc.c')
-rw-r--r-- | thirdparty/openssl/crypto/evp/bio_enc.c | 437 |
1 files changed, 0 insertions, 437 deletions
diff --git a/thirdparty/openssl/crypto/evp/bio_enc.c b/thirdparty/openssl/crypto/evp/bio_enc.c deleted file mode 100644 index 0806f233b6..0000000000 --- a/thirdparty/openssl/crypto/evp/bio_enc.c +++ /dev/null @@ -1,437 +0,0 @@ -/* crypto/evp/bio_enc.c */ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * All rights reserved. - * - * 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: - * 1. Redistributions of source code must retain the copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * "This product includes cryptographic software written by - * 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 - * 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 - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * 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 - * [including the GNU Public Licence.] - */ - -#include <stdio.h> -#include <errno.h> -#include "cryptlib.h" -#include <openssl/buffer.h> -#include <openssl/evp.h> - -static int enc_write(BIO *h, const char *buf, int num); -static int enc_read(BIO *h, char *buf, int size); -/* - * static int enc_puts(BIO *h, const char *str); - */ -/* - * static int enc_gets(BIO *h, char *str, int size); - */ -static long enc_ctrl(BIO *h, int cmd, long arg1, void *arg2); -static int enc_new(BIO *h); -static int enc_free(BIO *data); -static long enc_callback_ctrl(BIO *h, int cmd, bio_info_cb *fps); -#define ENC_BLOCK_SIZE (1024*4) -#define BUF_OFFSET (EVP_MAX_BLOCK_LENGTH*2) - -typedef struct enc_struct { - int buf_len; - int buf_off; - int cont; /* <= 0 when finished */ - int finished; - int ok; /* bad decrypt */ - EVP_CIPHER_CTX cipher; - /* - * buf is larger than ENC_BLOCK_SIZE because EVP_DecryptUpdate can return - * up to a block more data than is presented to it - */ - char buf[ENC_BLOCK_SIZE + BUF_OFFSET + 2]; -} BIO_ENC_CTX; - -static BIO_METHOD methods_enc = { - BIO_TYPE_CIPHER, "cipher", - enc_write, - enc_read, - NULL, /* enc_puts, */ - NULL, /* enc_gets, */ - enc_ctrl, - enc_new, - enc_free, - enc_callback_ctrl, -}; - -BIO_METHOD *BIO_f_cipher(void) -{ - return (&methods_enc); -} - -static int enc_new(BIO *bi) -{ - BIO_ENC_CTX *ctx; - - ctx = (BIO_ENC_CTX *)OPENSSL_malloc(sizeof(BIO_ENC_CTX)); - if (ctx == NULL) - return (0); - EVP_CIPHER_CTX_init(&ctx->cipher); - - ctx->buf_len = 0; - ctx->buf_off = 0; - ctx->cont = 1; - ctx->finished = 0; - ctx->ok = 1; - - bi->init = 0; - bi->ptr = (char *)ctx; - bi->flags = 0; - return (1); -} - -static int enc_free(BIO *a) -{ - BIO_ENC_CTX *b; - - if (a == NULL) - return (0); - b = (BIO_ENC_CTX *)a->ptr; - EVP_CIPHER_CTX_cleanup(&(b->cipher)); - OPENSSL_cleanse(a->ptr, sizeof(BIO_ENC_CTX)); - OPENSSL_free(a->ptr); - a->ptr = NULL; - a->init = 0; - a->flags = 0; - return (1); -} - -static int enc_read(BIO *b, char *out, int outl) -{ - int ret = 0, i; - BIO_ENC_CTX *ctx; - - if (out == NULL) - return (0); - ctx = (BIO_ENC_CTX *)b->ptr; - - if ((ctx == NULL) || (b->next_bio == NULL)) - return (0); - - /* First check if there are bytes decoded/encoded */ - if (ctx->buf_len > 0) { - i = ctx->buf_len - ctx->buf_off; - if (i > outl) - i = outl; - memcpy(out, &(ctx->buf[ctx->buf_off]), i); - ret = i; - out += i; - outl -= i; - ctx->buf_off += i; - if (ctx->buf_len == ctx->buf_off) { - ctx->buf_len = 0; - ctx->buf_off = 0; - } - } - - /* - * At this point, we have room of outl bytes and an empty buffer, so we - * should read in some more. - */ - - while (outl > 0) { - if (ctx->cont <= 0) - break; - - /* - * read in at IV offset, read the EVP_Cipher documentation about why - */ - i = BIO_read(b->next_bio, &(ctx->buf[BUF_OFFSET]), ENC_BLOCK_SIZE); - - if (i <= 0) { - /* Should be continue next time we are called? */ - if (!BIO_should_retry(b->next_bio)) { - ctx->cont = i; - i = EVP_CipherFinal_ex(&(ctx->cipher), - (unsigned char *)ctx->buf, - &(ctx->buf_len)); - ctx->ok = i; - ctx->buf_off = 0; - } else { - ret = (ret == 0) ? i : ret; - break; - } - } else { - if (!EVP_CipherUpdate(&ctx->cipher, - (unsigned char *)ctx->buf, &ctx->buf_len, - (unsigned char *)&(ctx->buf[BUF_OFFSET]), - i)) { - BIO_clear_retry_flags(b); - ctx->ok = 0; - return 0; - } - ctx->cont = 1; - /* - * Note: it is possible for EVP_CipherUpdate to decrypt zero - * bytes because this is or looks like the final block: if this - * happens we should retry and either read more data or decrypt - * the final block - */ - if (ctx->buf_len == 0) - continue; - } - - if (ctx->buf_len <= outl) - i = ctx->buf_len; - else - i = outl; - if (i <= 0) - break; - memcpy(out, ctx->buf, i); - ret += i; - ctx->buf_off = i; - outl -= i; - out += i; - } - - BIO_clear_retry_flags(b); - BIO_copy_next_retry(b); - return ((ret == 0) ? ctx->cont : ret); -} - -static int enc_write(BIO *b, const char *in, int inl) -{ - int ret = 0, n, i; - BIO_ENC_CTX *ctx; - - ctx = (BIO_ENC_CTX *)b->ptr; - ret = inl; - - BIO_clear_retry_flags(b); - n = ctx->buf_len - ctx->buf_off; - while (n > 0) { - i = BIO_write(b->next_bio, &(ctx->buf[ctx->buf_off]), n); - if (i <= 0) { - BIO_copy_next_retry(b); - return (i); - } - ctx->buf_off += i; - n -= i; - } - /* at this point all pending data has been written */ - - if ((in == NULL) || (inl <= 0)) - return (0); - - ctx->buf_off = 0; - while (inl > 0) { - n = (inl > ENC_BLOCK_SIZE) ? ENC_BLOCK_SIZE : inl; - if (!EVP_CipherUpdate(&ctx->cipher, - (unsigned char *)ctx->buf, &ctx->buf_len, - (unsigned char *)in, n)) { - BIO_clear_retry_flags(b); - ctx->ok = 0; - return 0; - } - inl -= n; - in += n; - - ctx->buf_off = 0; - n = ctx->buf_len; - while (n > 0) { - i = BIO_write(b->next_bio, &(ctx->buf[ctx->buf_off]), n); - if (i <= 0) { - BIO_copy_next_retry(b); - return (ret == inl) ? i : ret - inl; - } - n -= i; - ctx->buf_off += i; - } - ctx->buf_len = 0; - ctx->buf_off = 0; - } - BIO_copy_next_retry(b); - return (ret); -} - -static long enc_ctrl(BIO *b, int cmd, long num, void *ptr) -{ - BIO *dbio; - BIO_ENC_CTX *ctx, *dctx; - long ret = 1; - int i; - EVP_CIPHER_CTX **c_ctx; - - ctx = (BIO_ENC_CTX *)b->ptr; - - switch (cmd) { - case BIO_CTRL_RESET: - ctx->ok = 1; - ctx->finished = 0; - EVP_CipherInit_ex(&(ctx->cipher), NULL, NULL, NULL, NULL, - ctx->cipher.encrypt); - ret = BIO_ctrl(b->next_bio, cmd, num, ptr); - break; - case BIO_CTRL_EOF: /* More to read */ - if (ctx->cont <= 0) - ret = 1; - else - ret = BIO_ctrl(b->next_bio, cmd, num, ptr); - break; - case BIO_CTRL_WPENDING: - ret = ctx->buf_len - ctx->buf_off; - if (ret <= 0) - ret = BIO_ctrl(b->next_bio, cmd, num, ptr); - break; - case BIO_CTRL_PENDING: /* More to read in buffer */ - ret = ctx->buf_len - ctx->buf_off; - if (ret <= 0) - ret = BIO_ctrl(b->next_bio, cmd, num, ptr); - break; - case BIO_CTRL_FLUSH: - /* do a final write */ - again: - while (ctx->buf_len != ctx->buf_off) { - i = enc_write(b, NULL, 0); - if (i < 0) - return i; - } - - if (!ctx->finished) { - ctx->finished = 1; - ctx->buf_off = 0; - ret = EVP_CipherFinal_ex(&(ctx->cipher), - (unsigned char *)ctx->buf, - &(ctx->buf_len)); - ctx->ok = (int)ret; - if (ret <= 0) - break; - - /* push out the bytes */ - goto again; - } - - /* Finally flush the underlying BIO */ - ret = BIO_ctrl(b->next_bio, cmd, num, ptr); - break; - case BIO_C_GET_CIPHER_STATUS: - ret = (long)ctx->ok; - break; - case BIO_C_DO_STATE_MACHINE: - BIO_clear_retry_flags(b); - ret = BIO_ctrl(b->next_bio, cmd, num, ptr); - BIO_copy_next_retry(b); - break; - case BIO_C_GET_CIPHER_CTX: - c_ctx = (EVP_CIPHER_CTX **)ptr; - (*c_ctx) = &(ctx->cipher); - b->init = 1; - break; - case BIO_CTRL_DUP: - dbio = (BIO *)ptr; - dctx = (BIO_ENC_CTX *)dbio->ptr; - EVP_CIPHER_CTX_init(&dctx->cipher); - ret = EVP_CIPHER_CTX_copy(&dctx->cipher, &ctx->cipher); - if (ret) - dbio->init = 1; - break; - default: - ret = BIO_ctrl(b->next_bio, cmd, num, ptr); - break; - } - return (ret); -} - -static long enc_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp) -{ - long ret = 1; - - if (b->next_bio == NULL) - return (0); - switch (cmd) { - default: - ret = BIO_callback_ctrl(b->next_bio, cmd, fp); - break; - } - return (ret); -} - -/*- -void BIO_set_cipher_ctx(b,c) -BIO *b; -EVP_CIPHER_ctx *c; - { - if (b == NULL) return; - - if ((b->callback != NULL) && - (b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,0L) <= 0)) - return; - - b->init=1; - ctx=(BIO_ENC_CTX *)b->ptr; - memcpy(ctx->cipher,c,sizeof(EVP_CIPHER_CTX)); - - if (b->callback != NULL) - b->callback(b,BIO_CB_CTRL,(char *)c,BIO_CTRL_SET,e,1L); - } -*/ - -void BIO_set_cipher(BIO *b, const EVP_CIPHER *c, const unsigned char *k, - const unsigned char *i, int e) -{ - BIO_ENC_CTX *ctx; - - if (b == NULL) - return; - - if ((b->callback != NULL) && - (b->callback(b, BIO_CB_CTRL, (const char *)c, BIO_CTRL_SET, e, 0L) <= - 0)) - return; - - b->init = 1; - ctx = (BIO_ENC_CTX *)b->ptr; - EVP_CipherInit_ex(&(ctx->cipher), c, NULL, k, i, e); - - if (b->callback != NULL) - b->callback(b, BIO_CB_CTRL, (const char *)c, BIO_CTRL_SET, e, 1L); -} |