717 lines
18 KiB
C
717 lines
18 KiB
C
// Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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#include <openssl/cipher.h>
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#include <assert.h>
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#include <limits.h>
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#include <string.h>
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include <openssl/nid.h>
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#include <openssl/obj.h>
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#include "internal.h"
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#include "../../internal.h"
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void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx) {
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OPENSSL_memset(ctx, 0, sizeof(EVP_CIPHER_CTX));
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ctx->poisoned = 1;
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}
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EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void) {
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EVP_CIPHER_CTX *ctx = OPENSSL_zalloc(sizeof(EVP_CIPHER_CTX));
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if (ctx) {
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ctx->poisoned = 1;
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// NO-OP: struct already zeroed
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// EVP_CIPHER_CTX_init(ctx);
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}
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return ctx;
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}
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int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c) {
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GUARD_PTR(c);
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if (c->cipher != NULL && c->cipher->cleanup) {
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c->cipher->cleanup(c);
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}
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OPENSSL_free(c->cipher_data);
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OPENSSL_memset(c, 0, sizeof(EVP_CIPHER_CTX));
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c->poisoned = 1;
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return 1;
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}
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void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx) {
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if (ctx) {
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EVP_CIPHER_CTX_cleanup(ctx);
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OPENSSL_free(ctx);
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}
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}
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int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in) {
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SET_DIT_AUTO_RESET;
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if (in == NULL || in->cipher == NULL) {
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OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INPUT_NOT_INITIALIZED);
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return 0;
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}
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if (in->poisoned) {
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OPENSSL_PUT_ERROR(CIPHER, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
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return 0;
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}
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GUARD_PTR(out);
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EVP_CIPHER_CTX_cleanup(out);
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OPENSSL_memcpy(out, in, sizeof(EVP_CIPHER_CTX));
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if (in->cipher_data && in->cipher->ctx_size) {
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out->cipher_data = OPENSSL_memdup(in->cipher_data, in->cipher->ctx_size);
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if (!out->cipher_data) {
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out->cipher = NULL;
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return 0;
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}
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}
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if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY) {
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if (!in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out)) {
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out->cipher = NULL;
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return 0;
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}
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}
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return 1;
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}
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int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx) {
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EVP_CIPHER_CTX_cleanup(ctx);
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EVP_CIPHER_CTX_init(ctx);
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return 1;
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}
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int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
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ENGINE *engine, const uint8_t *key, const uint8_t *iv,
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int enc) {
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SET_DIT_AUTO_RESET;
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GUARD_PTR(ctx);
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if (enc == -1) {
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enc = ctx->encrypt;
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} else {
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if (enc) {
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enc = 1;
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}
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ctx->encrypt = enc;
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}
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if (cipher) {
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// Ensure a context left from last time is cleared (the previous check
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// attempted to avoid this if the same ENGINE and EVP_CIPHER could be
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// used).
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if (ctx->cipher) {
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EVP_CIPHER_CTX_cleanup(ctx);
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// Restore encrypt and flags
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ctx->encrypt = enc;
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}
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ctx->cipher = cipher;
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if (ctx->cipher->ctx_size) {
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ctx->cipher_data = OPENSSL_malloc(ctx->cipher->ctx_size);
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if (!ctx->cipher_data) {
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ctx->cipher = NULL;
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return 0;
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}
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} else {
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ctx->cipher_data = NULL;
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}
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ctx->key_len = cipher->key_len;
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ctx->flags = 0;
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if (ctx->cipher->flags & EVP_CIPH_CTRL_INIT) {
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if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) {
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ctx->cipher = NULL;
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OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INITIALIZATION_ERROR);
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return 0;
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}
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}
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} else if (!ctx->cipher) {
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OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_NO_CIPHER_SET);
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return 0;
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}
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// we assume block size is a power of 2 in *cryptUpdate
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assert(ctx->cipher->block_size == 1 || ctx->cipher->block_size == 8 ||
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ctx->cipher->block_size == 16);
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if (!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) {
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switch (EVP_CIPHER_CTX_mode(ctx)) {
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case EVP_CIPH_STREAM_CIPHER:
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case EVP_CIPH_ECB_MODE:
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break;
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case EVP_CIPH_CFB_MODE:
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ctx->num = 0;
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OPENSSL_FALLTHROUGH;
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case EVP_CIPH_CBC_MODE:
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assert(EVP_CIPHER_CTX_iv_length(ctx) <= sizeof(ctx->iv));
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if (iv) {
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OPENSSL_memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
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}
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OPENSSL_memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
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break;
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case EVP_CIPH_CTR_MODE:
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case EVP_CIPH_OFB_MODE:
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ctx->num = 0;
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// Don't reuse IV for CTR mode
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if (iv) {
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OPENSSL_memcpy(ctx->iv, iv, EVP_CIPHER_CTX_iv_length(ctx));
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}
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break;
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default:
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return 0;
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}
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}
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if (key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
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if (!ctx->cipher->init(ctx, key, iv, enc)) {
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return 0;
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}
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}
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ctx->buf_len = 0;
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ctx->final_used = 0;
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// Clear the poisoned flag to permit re-use of a CTX that previously had a
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// failed operation.
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ctx->poisoned = 0;
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return 1;
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}
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int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
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ENGINE *impl, const uint8_t *key, const uint8_t *iv) {
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return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1);
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}
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int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
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ENGINE *impl, const uint8_t *key, const uint8_t *iv) {
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return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0);
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}
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// block_remainder returns the number of bytes to remove from |len| to get a
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// multiple of |ctx|'s block size.
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static int block_remainder(const EVP_CIPHER_CTX *ctx, int len) {
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// |block_size| must be a power of two.
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assert(ctx->cipher->block_size != 0);
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assert((ctx->cipher->block_size & (ctx->cipher->block_size - 1)) == 0);
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return len & (ctx->cipher->block_size - 1);
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}
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int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len,
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const uint8_t *in, int in_len) {
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SET_DIT_AUTO_RESET;
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GUARD_PTR(ctx);
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if (ctx->poisoned) {
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OPENSSL_PUT_ERROR(CIPHER, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
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return 0;
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}
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// If the first call to |cipher| succeeds and the second fails, |ctx| may be
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// left in an indeterminate state. We set a poison flag on failure to ensure
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// callers do not continue to use the object in that case.
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ctx->poisoned = 1;
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// Ciphers that use blocks may write up to |bl| extra bytes. Ensure the output
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// does not overflow |*out_len|.
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GUARD_PTR(ctx->cipher);
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int bl = ctx->cipher->block_size;
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if (bl > 1 && in_len > INT_MAX - bl) {
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OPENSSL_PUT_ERROR(CIPHER, ERR_R_OVERFLOW);
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return 0;
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}
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if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
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int ret = ctx->cipher->cipher(ctx, out, in, in_len);
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if (ret < 0) {
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return 0;
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} else {
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*out_len = ret;
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}
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ctx->poisoned = 0;
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return 1;
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}
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if (in_len <= 0) {
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*out_len = 0;
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if (in_len == 0) {
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ctx->poisoned = 0;
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return 1;
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}
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return 0;
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}
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if (ctx->buf_len == 0 && block_remainder(ctx, in_len) == 0) {
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if (ctx->cipher->cipher(ctx, out, in, in_len)) {
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*out_len = in_len;
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ctx->poisoned = 0;
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return 1;
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} else {
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*out_len = 0;
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return 0;
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}
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}
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int i = ctx->buf_len;
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assert(bl <= (int)sizeof(ctx->buf));
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if (i != 0) {
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if (bl - i > in_len) {
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OPENSSL_memcpy(&ctx->buf[i], in, in_len);
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ctx->buf_len += in_len;
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*out_len = 0;
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ctx->poisoned = 0;
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return 1;
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} else {
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int j = bl - i;
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OPENSSL_memcpy(&ctx->buf[i], in, j);
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if (!ctx->cipher->cipher(ctx, out, ctx->buf, bl)) {
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return 0;
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}
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in_len -= j;
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in += j;
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out += bl;
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*out_len = bl;
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}
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} else {
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*out_len = 0;
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}
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i = block_remainder(ctx, in_len);
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in_len -= i;
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if (in_len > 0) {
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if (!ctx->cipher->cipher(ctx, out, in, in_len)) {
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return 0;
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}
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*out_len += in_len;
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}
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if (i != 0) {
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OPENSSL_memcpy(ctx->buf, &in[in_len], i);
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}
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ctx->buf_len = i;
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ctx->poisoned = 0;
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return 1;
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}
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int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len) {
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SET_DIT_AUTO_RESET;
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int n;
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unsigned int i, b, bl;
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GUARD_PTR(ctx);
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if (ctx->poisoned) {
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OPENSSL_PUT_ERROR(CIPHER, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
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return 0;
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}
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GUARD_PTR(ctx->cipher);
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if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
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// When EVP_CIPH_FLAG_CUSTOM_CIPHER is set, the return value of |cipher| is
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// the number of bytes written, or -1 on error. Otherwise the return value
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// is one on success and zero on error.
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const int num_bytes = ctx->cipher->cipher(ctx, out, NULL, 0);
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if (num_bytes < 0) {
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return 0;
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}
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*out_len = num_bytes;
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goto out;
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}
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b = ctx->cipher->block_size;
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assert(b <= sizeof(ctx->buf));
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if (b == 1) {
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*out_len = 0;
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goto out;
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}
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bl = ctx->buf_len;
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if (ctx->flags & EVP_CIPH_NO_PADDING) {
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if (bl) {
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OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
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return 0;
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}
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*out_len = 0;
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goto out;
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}
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n = b - bl;
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for (i = bl; i < b; i++) {
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ctx->buf[i] = n;
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}
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if (!ctx->cipher->cipher(ctx, out, ctx->buf, b)) {
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return 0;
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}
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*out_len = b;
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out:
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EVP_Cipher_verify_service_indicator(ctx);
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return 1;
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}
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int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len,
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const uint8_t *in, int in_len) {
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SET_DIT_AUTO_RESET;
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GUARD_PTR(ctx);
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if (ctx->poisoned) {
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OPENSSL_PUT_ERROR(CIPHER, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
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return 0;
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}
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// Ciphers that use blocks may write up to |bl| extra bytes. Ensure the output
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// does not overflow |*out_len|.
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GUARD_PTR(ctx->cipher);
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unsigned int b = ctx->cipher->block_size;
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if (b > 1 && in_len > INT_MAX - (int)b) {
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OPENSSL_PUT_ERROR(CIPHER, ERR_R_OVERFLOW);
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return 0;
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}
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if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
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int r = ctx->cipher->cipher(ctx, out, in, in_len);
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if (r < 0) {
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*out_len = 0;
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return 0;
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} else {
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*out_len = r;
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}
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return 1;
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}
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if (in_len <= 0) {
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*out_len = 0;
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return in_len == 0;
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}
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if (ctx->flags & EVP_CIPH_NO_PADDING) {
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return EVP_EncryptUpdate(ctx, out, out_len, in, in_len);
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}
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assert(b <= sizeof(ctx->final));
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int fix_len = 0;
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if (ctx->final_used) {
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OPENSSL_memcpy(out, ctx->final, b);
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out += b;
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fix_len = 1;
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}
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if (!EVP_EncryptUpdate(ctx, out, out_len, in, in_len)) {
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return 0;
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}
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// if we have 'decrypted' a multiple of block size, make sure
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// we have a copy of this last block
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if (b > 1 && !ctx->buf_len) {
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*out_len -= b;
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ctx->final_used = 1;
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OPENSSL_memcpy(ctx->final, &out[*out_len], b);
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} else {
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ctx->final_used = 0;
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}
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if (fix_len) {
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*out_len += b;
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}
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return 1;
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}
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int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *out_len) {
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SET_DIT_AUTO_RESET;
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int i, n;
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unsigned int b;
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*out_len = 0;
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GUARD_PTR(ctx);
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// |ctx->cipher->cipher| calls the static aes encryption function way under
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// the hood instead of |EVP_Cipher|, so the service indicator does not need
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// locking here.
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if (ctx->poisoned) {
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OPENSSL_PUT_ERROR(CIPHER, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
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return 0;
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}
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GUARD_PTR(ctx->cipher);
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if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
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i = ctx->cipher->cipher(ctx, out, NULL, 0);
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if (i < 0) {
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return 0;
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} else {
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*out_len = i;
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}
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goto out;
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}
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b = ctx->cipher->block_size;
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if (ctx->flags & EVP_CIPH_NO_PADDING) {
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if (ctx->buf_len) {
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OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
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return 0;
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}
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*out_len = 0;
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goto out;
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}
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if (b > 1) {
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if (ctx->buf_len || !ctx->final_used) {
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OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_WRONG_FINAL_BLOCK_LENGTH);
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return 0;
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}
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assert(b <= sizeof(ctx->final));
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// The following assumes that the ciphertext has been authenticated.
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// Otherwise it provides a padding oracle.
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n = ctx->final[b - 1];
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if (n == 0 || n > (int)b) {
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OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
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return 0;
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}
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for (i = 0; i < n; i++) {
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if (ctx->final[--b] != n) {
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OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
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return 0;
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}
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}
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n = ctx->cipher->block_size - n;
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for (i = 0; i < n; i++) {
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out[i] = ctx->final[i];
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}
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*out_len = n;
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} else {
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*out_len = 0;
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}
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out:
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EVP_Cipher_verify_service_indicator(ctx);
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return 1;
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}
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int EVP_Cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
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size_t in_len) {
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SET_DIT_AUTO_RESET;
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GUARD_PTR(ctx);
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GUARD_PTR(ctx->cipher);
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const int ret = ctx->cipher->cipher(ctx, out, in, in_len);
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// |EVP_CIPH_FLAG_CUSTOM_CIPHER| never sets the FIPS indicator via
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// |EVP_Cipher| because it's complicated whether the operation has completed
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// or not. E.g. AES-GCM with a non-NULL |in| argument hasn't completed an
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// operation. Callers should use the |EVP_AEAD| API or, at least,
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// |EVP_CipherUpdate| etc. AES-KeyWrap users should use the |AES_wrap_key|
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// API instead.
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//
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// This call can't be pushed into |EVP_Cipher_verify_service_indicator|
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// because whether |ret| indicates success or not depends on whether
|
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// |EVP_CIPH_FLAG_CUSTOM_CIPHER| is set. (This is unreasonable, but matches
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// OpenSSL.)
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if (!(ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) && ret) {
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EVP_Cipher_verify_service_indicator(ctx);
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}
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return ret;
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}
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int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len,
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const uint8_t *in, int in_len) {
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GUARD_PTR(ctx);
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if (ctx->encrypt) {
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return EVP_EncryptUpdate(ctx, out, out_len, in, in_len);
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} else {
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return EVP_DecryptUpdate(ctx, out, out_len, in, in_len);
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}
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}
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|
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int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len) {
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GUARD_PTR(ctx);
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if (ctx->encrypt) {
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return EVP_EncryptFinal_ex(ctx, out, out_len);
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} else {
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return EVP_DecryptFinal_ex(ctx, out, out_len);
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}
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}
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const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx) {
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return ctx->cipher;
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|
}
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|
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int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx) {
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|
return ctx->cipher->nid;
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|
}
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|
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int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx) {
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return ctx->encrypt;
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|
}
|
|
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|
unsigned EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx) {
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|
return ctx->cipher->block_size;
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|
}
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|
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|
unsigned EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx) {
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|
return ctx->key_len;
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|
}
|
|
|
|
unsigned EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx) {
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|
if (EVP_CIPHER_mode(ctx->cipher) == EVP_CIPH_GCM_MODE ||
|
|
EVP_CIPHER_mode(ctx->cipher) == EVP_CIPH_CCM_MODE) {
|
|
int length;
|
|
int res = EVP_CIPHER_CTX_ctrl((EVP_CIPHER_CTX *)ctx, EVP_CTRL_GET_IVLEN, 0,
|
|
&length);
|
|
// EVP_CIPHER_CTX_ctrl returning an error should be impossible under this
|
|
// circumstance. If it somehow did, fallback to the static cipher iv_len.
|
|
if (res == 1) {
|
|
return length;
|
|
}
|
|
}
|
|
return ctx->cipher->iv_len;
|
|
}
|
|
|
|
void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx) {
|
|
return ctx->app_data;
|
|
}
|
|
|
|
void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data) {
|
|
ctx->app_data = data;
|
|
}
|
|
|
|
uint32_t EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx) {
|
|
return ctx->cipher->flags & ~EVP_CIPH_MODE_MASK;
|
|
}
|
|
|
|
uint32_t EVP_CIPHER_CTX_mode(const EVP_CIPHER_CTX *ctx) {
|
|
return ctx->cipher->flags & EVP_CIPH_MODE_MASK;
|
|
}
|
|
|
|
int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int command, int arg, void *ptr) {
|
|
int ret;
|
|
if (!ctx->cipher) {
|
|
OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_NO_CIPHER_SET);
|
|
return 0;
|
|
}
|
|
|
|
if (!ctx->cipher->ctrl) {
|
|
OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_CTRL_NOT_IMPLEMENTED);
|
|
return 0;
|
|
}
|
|
|
|
ret = ctx->cipher->ctrl(ctx, command, arg, ptr);
|
|
if (ret == -1) {
|
|
OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_CTRL_OPERATION_NOT_IMPLEMENTED);
|
|
return 0;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad) {
|
|
if (pad) {
|
|
ctx->flags &= ~EVP_CIPH_NO_PADDING;
|
|
} else {
|
|
ctx->flags |= EVP_CIPH_NO_PADDING;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, unsigned key_len) {
|
|
if (c->key_len == key_len) {
|
|
return 1;
|
|
}
|
|
|
|
if (key_len == 0 || !(c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) {
|
|
OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_KEY_LENGTH);
|
|
return 0;
|
|
}
|
|
|
|
c->key_len = key_len;
|
|
return 1;
|
|
}
|
|
|
|
int EVP_CIPHER_nid(const EVP_CIPHER *cipher) {
|
|
if (cipher != NULL) {
|
|
return cipher->nid;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
unsigned EVP_CIPHER_block_size(const EVP_CIPHER *cipher) {
|
|
if (cipher != NULL) {
|
|
return cipher->block_size;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
unsigned EVP_CIPHER_key_length(const EVP_CIPHER *cipher) {
|
|
if (cipher != NULL) {
|
|
return cipher->key_len;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
unsigned EVP_CIPHER_iv_length(const EVP_CIPHER *cipher) {
|
|
if (cipher != NULL) {
|
|
return cipher->iv_len;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
uint32_t EVP_CIPHER_flags(const EVP_CIPHER *cipher) {
|
|
return cipher->flags & ~EVP_CIPH_MODE_MASK;
|
|
}
|
|
|
|
uint32_t EVP_CIPHER_mode(const EVP_CIPHER *cipher) {
|
|
return cipher->flags & EVP_CIPH_MODE_MASK;
|
|
}
|
|
|
|
const char *EVP_CIPHER_name(const EVP_CIPHER *cipher) {
|
|
if (cipher != NULL) {
|
|
return OBJ_nid2sn(cipher->nid);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
|
|
const uint8_t *key, const uint8_t *iv, int enc) {
|
|
if (cipher) {
|
|
EVP_CIPHER_CTX_init(ctx);
|
|
}
|
|
return EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, enc);
|
|
}
|
|
|
|
int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
|
|
const uint8_t *key, const uint8_t *iv) {
|
|
return EVP_CipherInit(ctx, cipher, key, iv, 1);
|
|
}
|
|
|
|
int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
|
|
const uint8_t *key, const uint8_t *iv) {
|
|
return EVP_CipherInit(ctx, cipher, key, iv, 0);
|
|
}
|
|
|
|
int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len) {
|
|
return EVP_CipherFinal_ex(ctx, out, out_len);
|
|
}
|
|
|
|
int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len) {
|
|
return EVP_EncryptFinal_ex(ctx, out, out_len);
|
|
}
|
|
|
|
int EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, uint8_t *out, int *out_len) {
|
|
return EVP_DecryptFinal_ex(ctx, out, out_len);
|
|
}
|
|
|
|
int EVP_add_cipher_alias(const char *a, const char *b) {
|
|
return 1;
|
|
}
|
|
|
|
void EVP_CIPHER_CTX_set_flags(const EVP_CIPHER_CTX *ctx, uint32_t flags) {}
|