/*
- * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* https://www.openssl.org/source/license.html
*/
+/* We need to use some engine deprecated APIs */
+#define OPENSSL_SUPPRESS_DEPRECATED
+
#include <stdio.h>
+#include <limits.h>
#include <assert.h>
-#include "internal/cryptlib.h"
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/rand.h>
-#include <openssl/rand_drbg.h>
-#include <openssl/engine.h>
+#ifndef FIPS_MODULE
+# include <openssl/engine.h>
+#endif
#include <openssl/params.h>
#include <openssl/core_names.h>
-#include "internal/evp_int.h"
+#include "internal/cryptlib.h"
#include "internal/provider.h"
-#include "evp_locl.h"
+#include "internal/core.h"
+#include "internal/safe_math.h"
+#include "crypto/evp.h"
+#include "evp_local.h"
+
+OSSL_SAFE_MATH_SIGNED(int, int)
int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx)
{
if (ctx->cipher == NULL || ctx->cipher->prov == NULL)
goto legacy;
- if (ctx->provctx != NULL) {
+ if (ctx->algctx != NULL) {
if (ctx->cipher->freectx != NULL)
- ctx->cipher->freectx(ctx->provctx);
- ctx->provctx = NULL;
+ ctx->cipher->freectx(ctx->algctx);
+ ctx->algctx = NULL;
}
if (ctx->fetched_cipher != NULL)
- EVP_CIPHER_meth_free(ctx->fetched_cipher);
+ EVP_CIPHER_free(ctx->fetched_cipher);
memset(ctx, 0, sizeof(*ctx));
+ ctx->iv_len = -1;
return 1;
- /* TODO(3.0): Remove legacy code below */
+ /* Remove legacy code below when legacy support is removed. */
legacy:
if (ctx->cipher != NULL) {
OPENSSL_cleanse(ctx->cipher_data, ctx->cipher->ctx_size);
}
OPENSSL_free(ctx->cipher_data);
-#ifndef OPENSSL_NO_ENGINE
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
ENGINE_finish(ctx->engine);
#endif
memset(ctx, 0, sizeof(*ctx));
+ ctx->iv_len = -1;
return 1;
}
EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void)
{
- return OPENSSL_zalloc(sizeof(EVP_CIPHER_CTX));
+ EVP_CIPHER_CTX *ctx;
+
+ ctx = OPENSSL_zalloc(sizeof(EVP_CIPHER_CTX));
+ if (ctx == NULL)
+ return NULL;
+
+ ctx->iv_len = -1;
+ return ctx;
}
void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx)
{
+ if (ctx == NULL)
+ return;
EVP_CIPHER_CTX_reset(ctx);
OPENSSL_free(ctx);
}
-int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
- const unsigned char *key, const unsigned char *iv, int enc)
-{
- if (cipher != NULL)
- EVP_CIPHER_CTX_reset(ctx);
- return EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, enc);
-}
-
-int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
- ENGINE *impl, const unsigned char *key,
- const unsigned char *iv, int enc)
+static int evp_cipher_init_internal(EVP_CIPHER_CTX *ctx,
+ const EVP_CIPHER *cipher,
+ ENGINE *impl, const unsigned char *key,
+ const unsigned char *iv, int enc,
+ const OSSL_PARAM params[])
{
- EVP_CIPHER *provciph = NULL;
+ int n;
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
ENGINE *tmpimpl = NULL;
- const EVP_CIPHER *tmpcipher;
+#endif
/*
* enc == 1 means we are encrypting.
}
if (cipher == NULL && ctx->cipher == NULL) {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_NO_CIPHER_SET);
+ ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
return 0;
}
- /* TODO(3.0): Legacy work around code below. Remove this */
+ /* Code below to be removed when legacy support is dropped. */
-#ifndef OPENSSL_NO_ENGINE
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
/*
* Whether it's nice or not, "Inits" can be used on "Final"'d contexts so
* this context may already have an ENGINE! Try to avoid releasing the
* If there are engines involved then we should use legacy handling for now.
*/
if (ctx->engine != NULL
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
+ || tmpimpl != NULL
+#endif
|| impl != NULL
- || tmpimpl != NULL) {
+ || (cipher != NULL && cipher->origin == EVP_ORIG_METH)
+ || (cipher == NULL && ctx->cipher != NULL
+ && ctx->cipher->origin == EVP_ORIG_METH)) {
if (ctx->cipher == ctx->fetched_cipher)
ctx->cipher = NULL;
- EVP_CIPHER_meth_free(ctx->fetched_cipher);
+ EVP_CIPHER_free(ctx->fetched_cipher);
ctx->fetched_cipher = NULL;
goto legacy;
}
-
- tmpcipher = (cipher == NULL) ? ctx->cipher : cipher;
-
- if (tmpcipher->prov == NULL) {
- switch(tmpcipher->nid) {
- case NID_aes_256_ecb:
- case NID_aes_192_ecb:
- case NID_aes_128_ecb:
- case NID_aes_256_cbc:
- case NID_aes_192_cbc:
- case NID_aes_128_cbc:
- case NID_aes_256_ofb128:
- case NID_aes_192_ofb128:
- case NID_aes_128_ofb128:
- case NID_aes_256_cfb128:
- case NID_aes_192_cfb128:
- case NID_aes_128_cfb128:
- case NID_aes_256_cfb1:
- case NID_aes_192_cfb1:
- case NID_aes_128_cfb1:
- case NID_aes_256_cfb8:
- case NID_aes_192_cfb8:
- case NID_aes_128_cfb8:
- case NID_aes_256_ctr:
- case NID_aes_192_ctr:
- case NID_aes_128_ctr:
- break;
- default:
- goto legacy;
- }
- }
-
/*
* Ensure a context left lying around from last time is cleared
* (legacy code)
*/
if (cipher != NULL && ctx->cipher != NULL) {
+ if (ctx->cipher->cleanup != NULL && !ctx->cipher->cleanup(ctx))
+ return 0;
OPENSSL_clear_free(ctx->cipher_data, ctx->cipher->ctx_size);
ctx->cipher_data = NULL;
}
-
- /* TODO(3.0): Start of non-legacy code below */
+ /* Start of non-legacy code below */
/* Ensure a context left lying around from last time is cleared */
if (cipher != NULL && ctx->cipher != NULL) {
ctx->flags = flags;
}
- if (cipher != NULL)
- ctx->cipher = cipher;
- else
+ if (cipher == NULL)
cipher = ctx->cipher;
if (cipher->prov == NULL) {
- provciph = EVP_CIPHER_fetch(NULL, OBJ_nid2sn(cipher->nid), "");
- if (provciph == NULL) {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
+#ifdef FIPS_MODULE
+ /* We only do explicit fetches inside the FIPS module */
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ return 0;
+#else
+ EVP_CIPHER *provciph =
+ EVP_CIPHER_fetch(NULL,
+ cipher->nid == NID_undef ? "NULL"
+ : OBJ_nid2sn(cipher->nid),
+ "");
+
+ if (provciph == NULL)
return 0;
- }
cipher = provciph;
- EVP_CIPHER_meth_free(ctx->fetched_cipher);
+ EVP_CIPHER_free(ctx->fetched_cipher);
ctx->fetched_cipher = provciph;
+#endif
}
+ if (!ossl_assert(cipher->prov != NULL)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ return 0;
+ }
+
+ if (cipher != ctx->fetched_cipher) {
+ if (!EVP_CIPHER_up_ref((EVP_CIPHER *)cipher)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ return 0;
+ }
+ EVP_CIPHER_free(ctx->fetched_cipher);
+ /* Coverity false positive, the reference counting is confusing it */
+ /* coverity[use_after_free] */
+ ctx->fetched_cipher = (EVP_CIPHER *)cipher;
+ }
ctx->cipher = cipher;
- if (ctx->provctx == NULL) {
- ctx->provctx = ctx->cipher->newctx(ossl_provider_ctx(cipher->prov));
- if (ctx->provctx == NULL) {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ if (ctx->algctx == NULL) {
+ ctx->algctx = ctx->cipher->newctx(ossl_provider_ctx(cipher->prov));
+ if (ctx->algctx == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
return 0;
}
}
return 0;
}
- switch (EVP_CIPHER_mode(ctx->cipher)) {
- case EVP_CIPH_CFB_MODE:
- case EVP_CIPH_OFB_MODE:
- case EVP_CIPH_CBC_MODE:
- /* For these modes we remember the original IV for later use */
- if (!ossl_assert(EVP_CIPHER_CTX_iv_length(ctx) <= (int)sizeof(ctx->oiv))) {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
- return 0;
+#ifndef FIPS_MODULE
+ /*
+ * Fix for CVE-2023-5363
+ * Passing in a size as part of the init call takes effect late
+ * so, force such to occur before the initialisation.
+ *
+ * The FIPS provider's internal library context is used in a manner
+ * such that this is not an issue.
+ */
+ if (params != NULL) {
+ OSSL_PARAM param_lens[3] = { OSSL_PARAM_END, OSSL_PARAM_END,
+ OSSL_PARAM_END };
+ OSSL_PARAM *q = param_lens;
+ const OSSL_PARAM *p;
+
+ p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_KEYLEN);
+ if (p != NULL)
+ memcpy(q++, p, sizeof(*q));
+
+ /*
+ * Note that OSSL_CIPHER_PARAM_AEAD_IVLEN is a synonym for
+ * OSSL_CIPHER_PARAM_IVLEN so both are covered here.
+ */
+ p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_IVLEN);
+ if (p != NULL)
+ memcpy(q++, p, sizeof(*q));
+
+ if (q != param_lens) {
+ if (!EVP_CIPHER_CTX_set_params(ctx, param_lens)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
+ return 0;
+ }
}
- if (iv != NULL)
- memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
}
+#endif
if (enc) {
if (ctx->cipher->einit == NULL) {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
return 0;
}
- return ctx->cipher->einit(ctx->provctx,
+ return ctx->cipher->einit(ctx->algctx,
key,
key == NULL ? 0
- : EVP_CIPHER_CTX_key_length(ctx),
+ : EVP_CIPHER_CTX_get_key_length(ctx),
iv,
iv == NULL ? 0
- : EVP_CIPHER_CTX_iv_length(ctx));
+ : EVP_CIPHER_CTX_get_iv_length(ctx),
+ params);
}
if (ctx->cipher->dinit == NULL) {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
return 0;
}
- return ctx->cipher->dinit(ctx->provctx,
+ return ctx->cipher->dinit(ctx->algctx,
key,
key == NULL ? 0
- : EVP_CIPHER_CTX_key_length(ctx),
+ : EVP_CIPHER_CTX_get_key_length(ctx),
iv,
iv == NULL ? 0
- : EVP_CIPHER_CTX_iv_length(ctx));
+ : EVP_CIPHER_CTX_get_iv_length(ctx),
+ params);
- /* TODO(3.0): Remove legacy code below */
+ /* Code below to be removed when legacy support is dropped. */
legacy:
if (cipher != NULL) {
ctx->encrypt = enc;
ctx->flags = flags;
}
-#ifndef OPENSSL_NO_ENGINE
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
if (impl != NULL) {
if (!ENGINE_init(impl)) {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
return 0;
}
} else {
* is that we should at least be able to avoid using US
* misspellings of "initialisation"?
*/
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
return 0;
}
/* We'll use the ENGINE's private cipher definition */
ctx->cipher_data = OPENSSL_zalloc(ctx->cipher->ctx_size);
if (ctx->cipher_data == NULL) {
ctx->cipher = NULL;
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, ERR_R_MALLOC_FAILURE);
return 0;
}
} else {
/* Preserve wrap enable flag, zero everything else */
ctx->flags &= EVP_CIPHER_CTX_FLAG_WRAP_ALLOW;
if (ctx->cipher->flags & EVP_CIPH_CTRL_INIT) {
- if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) {
+ if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL) <= 0) {
ctx->cipher = NULL;
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
return 0;
}
}
}
-#ifndef OPENSSL_NO_ENGINE
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
skip_to_init:
#endif
if (ctx->cipher == NULL)
|| ctx->cipher->block_size == 16);
if (!(ctx->flags & EVP_CIPHER_CTX_FLAG_WRAP_ALLOW)
- && EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_WRAP_MODE) {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_WRAP_MODE_NOT_ALLOWED);
+ && EVP_CIPHER_CTX_get_mode(ctx) == EVP_CIPH_WRAP_MODE) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_WRAP_MODE_NOT_ALLOWED);
return 0;
}
- if (!(EVP_CIPHER_flags(EVP_CIPHER_CTX_cipher(ctx)) & EVP_CIPH_CUSTOM_IV)) {
- switch (EVP_CIPHER_CTX_mode(ctx)) {
+ if ((EVP_CIPHER_get_flags(EVP_CIPHER_CTX_get0_cipher(ctx))
+ & EVP_CIPH_CUSTOM_IV) == 0) {
+ switch (EVP_CIPHER_CTX_get_mode(ctx)) {
case EVP_CIPH_STREAM_CIPHER:
case EVP_CIPH_ECB_MODE:
/* fall-through */
case EVP_CIPH_CBC_MODE:
-
- OPENSSL_assert(EVP_CIPHER_CTX_iv_length(ctx) <=
- (int)sizeof(ctx->iv));
- if (iv)
- memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
- memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
+ n = EVP_CIPHER_CTX_get_iv_length(ctx);
+ if (n < 0 || n > (int)sizeof(ctx->iv)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_IV_LENGTH);
+ return 0;
+ }
+ if (iv != NULL)
+ memcpy(ctx->oiv, iv, n);
+ memcpy(ctx->iv, ctx->oiv, n);
break;
case EVP_CIPH_CTR_MODE:
ctx->num = 0;
/* Don't reuse IV for CTR mode */
- if (iv)
- memcpy(ctx->iv, iv, EVP_CIPHER_CTX_iv_length(ctx));
+ if (iv != NULL) {
+ n = EVP_CIPHER_CTX_get_iv_length(ctx);
+ if (n <= 0 || n > (int)sizeof(ctx->iv)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_IV_LENGTH);
+ return 0;
+ }
+ memcpy(ctx->iv, iv, n);
+ }
break;
default:
}
}
- if (key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
+ if (key != NULL || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
if (!ctx->cipher->init(ctx, key, iv, enc))
return 0;
}
return 1;
}
+int EVP_CipherInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+ const unsigned char *key, const unsigned char *iv,
+ int enc, const OSSL_PARAM params[])
+{
+ return evp_cipher_init_internal(ctx, cipher, NULL, key, iv, enc, params);
+}
+
+int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+ const unsigned char *key, const unsigned char *iv, int enc)
+{
+ if (cipher != NULL)
+ EVP_CIPHER_CTX_reset(ctx);
+ return evp_cipher_init_internal(ctx, cipher, NULL, key, iv, enc, NULL);
+}
+
+int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+ ENGINE *impl, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ return evp_cipher_init_internal(ctx, cipher, impl, key, iv, enc, NULL);
+}
+
int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
const unsigned char *in, int inl)
{
return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1);
}
+int EVP_EncryptInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+ const unsigned char *key, const unsigned char *iv,
+ const OSSL_PARAM params[])
+{
+ return EVP_CipherInit_ex2(ctx, cipher, key, iv, 1, params);
+}
+
int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
const unsigned char *key, const unsigned char *iv)
{
return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0);
}
+int EVP_DecryptInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
+ const unsigned char *key, const unsigned char *iv,
+ const OSSL_PARAM params[])
+{
+ return EVP_CipherInit_ex2(ctx, cipher, key, iv, 0, params);
+}
+
/*
* According to the letter of standard difference between pointers
* is specified to be valid only within same object. This makes
# define PTRDIFF_T size_t
#endif
-int is_partially_overlapping(const void *ptr1, const void *ptr2, int len)
+int ossl_is_partially_overlapping(const void *ptr1, const void *ptr2, int len)
{
PTRDIFF_T diff = (PTRDIFF_T)ptr1-(PTRDIFF_T)ptr2;
/*
int i, j, bl, cmpl = inl;
if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
- cmpl = (cmpl + 7) / 8;
+ cmpl = safe_div_round_up_int(cmpl, 8, NULL);
bl = ctx->cipher->block_size;
- if (inl <= 0) {
- *outl = 0;
- return inl == 0;
- }
-
if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
/* If block size > 1 then the cipher will have to do this check */
- if (bl == 1 && is_partially_overlapping(out, in, cmpl)) {
- EVPerr(EVP_F_EVP_ENCRYPTDECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
+ if (bl == 1 && ossl_is_partially_overlapping(out, in, cmpl)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
return 0;
}
return 1;
}
- if (is_partially_overlapping(out + ctx->buf_len, in, cmpl)) {
- EVPerr(EVP_F_EVP_ENCRYPTDECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
+ if (inl <= 0) {
+ *outl = 0;
+ return inl == 0;
+ }
+ if (ossl_is_partially_overlapping(out + ctx->buf_len, in, cmpl)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
return 0;
}
return 1;
} else {
j = bl - i;
+
+ /*
+ * Once we've processed the first j bytes from in, the amount of
+ * data left that is a multiple of the block length is:
+ * (inl - j) & ~(bl - 1)
+ * We must ensure that this amount of data, plus the one block that
+ * we process from ctx->buf does not exceed INT_MAX
+ */
+ if (((inl - j) & ~(bl - 1)) > INT_MAX - bl) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_OUTPUT_WOULD_OVERFLOW);
+ return 0;
+ }
memcpy(&(ctx->buf[i]), in, j);
inl -= j;
in += j;
const unsigned char *in, int inl)
{
int ret;
- size_t soutl;
+ size_t soutl, inl_ = (size_t)inl;
int blocksize;
+ if (ossl_likely(outl != NULL)) {
+ *outl = 0;
+ } else {
+ ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+
/* Prevent accidental use of decryption context when encrypting */
- if (!ctx->encrypt) {
- EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_INVALID_OPERATION);
+ if (ossl_unlikely(!ctx->encrypt)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
return 0;
}
- if (ctx->cipher == NULL || ctx->cipher->prov == NULL)
+ if (ossl_unlikely(ctx->cipher == NULL)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
+ return 0;
+ }
+
+ if (ossl_unlikely(ctx->cipher->prov == NULL))
goto legacy;
- blocksize = EVP_CIPHER_CTX_block_size(ctx);
+ blocksize = ctx->cipher->block_size;
- if (ctx->cipher->cupdate == NULL || blocksize < 1) {
- EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_UPDATE_ERROR);
+ if (ossl_unlikely(ctx->cipher->cupdate == NULL || blocksize < 1)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
return 0;
}
- ret = ctx->cipher->cupdate(ctx->provctx, out, &soutl,
- inl + (blocksize == 1 ? 0 : blocksize), in,
- (size_t)inl);
- if (ret) {
+ ret = ctx->cipher->cupdate(ctx->algctx, out, &soutl,
+ inl_ + (size_t)(blocksize == 1 ? 0 : blocksize),
+ in, inl_);
+
+ if (ossl_likely(ret)) {
if (soutl > INT_MAX) {
- EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_UPDATE_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
return 0;
}
*outl = soutl;
return ret;
- /* TODO(3.0): Remove legacy code below */
+ /* Code below to be removed when legacy support is dropped. */
legacy:
return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl);
size_t soutl;
int blocksize;
+ if (outl != NULL) {
+ *outl = 0;
+ } else {
+ ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+
/* Prevent accidental use of decryption context when encrypting */
if (!ctx->encrypt) {
- EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX, EVP_R_INVALID_OPERATION);
+ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
return 0;
}
if (ctx->cipher == NULL) {
- EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX, EVP_R_NO_CIPHER_SET);
+ ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
return 0;
}
if (ctx->cipher->prov == NULL)
goto legacy;
- blocksize = EVP_CIPHER_CTX_block_size(ctx);
+ blocksize = EVP_CIPHER_CTX_get_block_size(ctx);
if (blocksize < 1 || ctx->cipher->cfinal == NULL) {
- EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX, EVP_R_FINAL_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
return 0;
}
- ret = ctx->cipher->cfinal(ctx->provctx, out, &soutl,
+ ret = ctx->cipher->cfinal(ctx->algctx, out, &soutl,
blocksize == 1 ? 0 : blocksize);
if (ret) {
if (soutl > INT_MAX) {
- EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX, EVP_R_FINAL_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
return 0;
}
*outl = soutl;
return ret;
- /* TODO(3.0): Remove legacy code below */
+ /* Code below to be removed when legacy support is dropped. */
legacy:
if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
bl = ctx->buf_len;
if (ctx->flags & EVP_CIPH_NO_PADDING) {
if (bl) {
- EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX,
- EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
+ ERR_raise(ERR_LIB_EVP, EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
return 0;
}
*outl = 0;
{
int fix_len, cmpl = inl, ret;
unsigned int b;
- size_t soutl;
+ size_t soutl, inl_ = (size_t)inl;
int blocksize;
+ if (ossl_likely(outl != NULL)) {
+ *outl = 0;
+ } else {
+ ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+
/* Prevent accidental use of encryption context when decrypting */
- if (ctx->encrypt) {
- EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_INVALID_OPERATION);
+ if (ossl_unlikely(ctx->encrypt)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
return 0;
}
- if (ctx->cipher == NULL) {
- EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_NO_CIPHER_SET);
+ if (ossl_unlikely(ctx->cipher == NULL)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
return 0;
}
- if (ctx->cipher->prov == NULL)
+ if (ossl_unlikely(ctx->cipher->prov == NULL))
goto legacy;
- blocksize = EVP_CIPHER_CTX_block_size(ctx);
+ blocksize = EVP_CIPHER_CTX_get_block_size(ctx);
- if (ctx->cipher->cupdate == NULL || blocksize < 1) {
- EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_UPDATE_ERROR);
+ if (ossl_unlikely(ctx->cipher->cupdate == NULL || blocksize < 1)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
return 0;
}
- ret = ctx->cipher->cupdate(ctx->provctx, out, &soutl,
- inl + (blocksize == 1 ? 0 : blocksize), in,
- (size_t)inl);
+ ret = ctx->cipher->cupdate(ctx->algctx, out, &soutl,
+ inl_ + (size_t)(blocksize == 1 ? 0 : blocksize),
+ in, inl_);
- if (ret) {
+ if (ossl_likely(ret)) {
if (soutl > INT_MAX) {
- EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_UPDATE_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
return 0;
}
*outl = soutl;
return ret;
- /* TODO(3.0): Remove legacy code below */
+ /* Code below to be removed when legacy support is dropped. */
legacy:
b = ctx->cipher->block_size;
if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
- cmpl = (cmpl + 7) / 8;
-
- if (inl <= 0) {
- *outl = 0;
- return inl == 0;
- }
+ cmpl = safe_div_round_up_int(cmpl, 8, NULL);
if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
- if (b == 1 && is_partially_overlapping(out, in, cmpl)) {
- EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
+ if (b == 1 && ossl_is_partially_overlapping(out, in, cmpl)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
return 0;
}
return 1;
}
+ if (inl <= 0) {
+ *outl = 0;
+ return inl == 0;
+ }
+
if (ctx->flags & EVP_CIPH_NO_PADDING)
return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl);
if (ctx->final_used) {
/* see comment about PTRDIFF_T comparison above */
if (((PTRDIFF_T)out == (PTRDIFF_T)in)
- || is_partially_overlapping(out, in, b)) {
- EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
+ || ossl_is_partially_overlapping(out, in, b)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
+ return 0;
+ }
+ /*
+ * final_used is only ever set if buf_len is 0. Therefore the maximum
+ * length output we will ever see from evp_EncryptDecryptUpdate is
+ * the maximum multiple of the block length that is <= inl, or just:
+ * inl & ~(b - 1)
+ * Since final_used has been set then the final output length is:
+ * (inl & ~(b - 1)) + b
+ * This must never exceed INT_MAX
+ */
+ if ((inl & ~(b - 1)) > INT_MAX - b) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_OUTPUT_WOULD_OVERFLOW);
return 0;
}
memcpy(out, ctx->final, b);
int ret;
int blocksize;
+ if (outl != NULL) {
+ *outl = 0;
+ } else {
+ ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+
/* Prevent accidental use of encryption context when decrypting */
if (ctx->encrypt) {
- EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_INVALID_OPERATION);
+ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
return 0;
}
- if (ctx->cipher == NULL || ctx->cipher->prov == NULL)
+ if (ctx->cipher == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
+ return 0;
+ }
+
+ if (ctx->cipher->prov == NULL)
goto legacy;
- blocksize = EVP_CIPHER_CTX_block_size(ctx);
+ blocksize = EVP_CIPHER_CTX_get_block_size(ctx);
if (blocksize < 1 || ctx->cipher->cfinal == NULL) {
- EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_FINAL_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
return 0;
}
- ret = ctx->cipher->cfinal(ctx->provctx, out, &soutl,
+ ret = ctx->cipher->cfinal(ctx->algctx, out, &soutl,
blocksize == 1 ? 0 : blocksize);
if (ret) {
if (soutl > INT_MAX) {
- EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_FINAL_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
return 0;
}
*outl = soutl;
return ret;
- /* TODO(3.0): Remove legacy code below */
+ /* Code below to be removed when legacy support is dropped. */
legacy:
*outl = 0;
- if (ctx->cipher == NULL) {
- EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_NO_CIPHER_SET);
- return 0;
- }
-
if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
i = ctx->cipher->do_cipher(ctx, out, NULL, 0);
if (i < 0)
b = ctx->cipher->block_size;
if (ctx->flags & EVP_CIPH_NO_PADDING) {
if (ctx->buf_len) {
- EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,
- EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
+ ERR_raise(ERR_LIB_EVP, EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
return 0;
}
*outl = 0;
}
if (b > 1) {
if (ctx->buf_len || !ctx->final_used) {
- EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_WRONG_FINAL_BLOCK_LENGTH);
+ ERR_raise(ERR_LIB_EVP, EVP_R_WRONG_FINAL_BLOCK_LENGTH);
return 0;
}
OPENSSL_assert(b <= sizeof(ctx->final));
*/
n = ctx->final[b - 1];
if (n == 0 || n > (int)b) {
- EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_BAD_DECRYPT);
+ ERR_raise(ERR_LIB_EVP, EVP_R_BAD_DECRYPT);
return 0;
}
for (i = 0; i < n; i++) {
if (ctx->final[--b] != n) {
- EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_BAD_DECRYPT);
+ ERR_raise(ERR_LIB_EVP, EVP_R_BAD_DECRYPT);
return 0;
}
}
for (i = 0; i < n; i++)
out[i] = ctx->final[i];
*outl = n;
- } else
- *outl = 0;
+ }
return 1;
}
int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen)
{
+ if (c->cipher->prov != NULL) {
+ int ok;
+ OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
+ size_t len;
+
+ if (EVP_CIPHER_CTX_get_key_length(c) == keylen)
+ return 1;
+
+ /* Check the cipher actually understands this parameter */
+ if (OSSL_PARAM_locate_const(EVP_CIPHER_settable_ctx_params(c->cipher),
+ OSSL_CIPHER_PARAM_KEYLEN) == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH);
+ return 0;
+ }
+
+ params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &len);
+ if (!OSSL_PARAM_set_int(params, keylen))
+ return 0;
+ ok = evp_do_ciph_ctx_setparams(c->cipher, c->algctx, params);
+ if (ok <= 0)
+ return 0;
+ c->key_len = keylen;
+ return 1;
+ }
+
+ /* Code below to be removed when legacy support is dropped. */
+
+ /*
+ * Note there have never been any built-in ciphers that define this flag
+ * since it was first introduced.
+ */
if (c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH)
return EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_KEY_LENGTH, keylen, NULL);
- if (EVP_CIPHER_CTX_key_length(c) == keylen)
+ if (EVP_CIPHER_CTX_get_key_length(c) == keylen)
return 1;
if ((keylen > 0) && (c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) {
c->key_len = keylen;
return 1;
}
- EVPerr(EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH, EVP_R_INVALID_KEY_LENGTH);
+ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH);
return 0;
}
int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad)
{
+ int ok;
+ OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
+ unsigned int pd = pad;
+
if (pad)
ctx->flags &= ~EVP_CIPH_NO_PADDING;
else
ctx->flags |= EVP_CIPH_NO_PADDING;
- if (ctx->cipher != NULL && ctx->cipher->prov != NULL) {
- OSSL_PARAM params[] = {
- OSSL_PARAM_int(OSSL_CIPHER_PARAM_PADDING, NULL),
- OSSL_PARAM_END
- };
+ if (ctx->cipher != NULL && ctx->cipher->prov == NULL)
+ return 1;
+ params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_PADDING, &pd);
+ ok = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
- params[0].data = &pad;
+ return ok != 0;
+}
- if (ctx->cipher->ctx_set_params == NULL) {
- EVPerr(EVP_F_EVP_CIPHER_CTX_SET_PADDING, EVP_R_CTRL_NOT_IMPLEMENTED);
- return 0;
- }
+int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
+{
+ int ret = EVP_CTRL_RET_UNSUPPORTED;
+ int set_params = 1;
+ size_t sz = arg;
+ unsigned int i;
+ OSSL_PARAM params[4] = {
+ OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END
+ };
+
+ if (ctx == NULL || ctx->cipher == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
+ return 0;
+ }
- if (!ctx->cipher->ctx_set_params(ctx->provctx, params))
+ if (ctx->cipher->prov == NULL)
+ goto legacy;
+
+ switch (type) {
+ case EVP_CTRL_SET_KEY_LENGTH:
+ if (arg < 0)
+ return 0;
+ if (ctx->key_len == arg)
+ /* Skip calling into provider if unchanged. */
+ return 1;
+ params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &sz);
+ ctx->key_len = -1;
+ break;
+ case EVP_CTRL_RAND_KEY: /* Used by DES */
+ set_params = 0;
+ params[0] =
+ OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY,
+ ptr, sz);
+ break;
+
+ case EVP_CTRL_INIT:
+ /*
+ * EVP_CTRL_INIT is purely legacy, no provider counterpart.
+ * As a matter of fact, this should be dead code, but some caller
+ * might still do a direct control call with this command, so...
+ * Legacy methods return 1 except for exceptional circumstances, so
+ * we do the same here to not be disruptive.
+ */
+ return 1;
+ case EVP_CTRL_SET_PIPELINE_OUTPUT_BUFS: /* Used by DASYNC */
+ default:
+ goto end;
+ case EVP_CTRL_AEAD_SET_IVLEN:
+ if (arg < 0)
+ return 0;
+ if (ctx->iv_len == arg)
+ /* Skip calling into provider if unchanged. */
+ return 1;
+ params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &sz);
+ ctx->iv_len = -1;
+ break;
+ case EVP_CTRL_CCM_SET_L:
+ if (arg < 2 || arg > 8)
+ return 0;
+ sz = 15 - arg;
+ params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &sz);
+ ctx->iv_len = -1;
+ break;
+ case EVP_CTRL_AEAD_SET_IV_FIXED:
+ params[0] = OSSL_PARAM_construct_octet_string(
+ OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED, ptr, sz);
+ break;
+ case EVP_CTRL_GCM_IV_GEN:
+ set_params = 0;
+ if (arg < 0)
+ sz = 0; /* special case that uses the iv length */
+ params[0] = OSSL_PARAM_construct_octet_string(
+ OSSL_CIPHER_PARAM_AEAD_TLS1_GET_IV_GEN, ptr, sz);
+ break;
+ case EVP_CTRL_GCM_SET_IV_INV:
+ if (arg < 0)
+ return 0;
+ params[0] = OSSL_PARAM_construct_octet_string(
+ OSSL_CIPHER_PARAM_AEAD_TLS1_SET_IV_INV, ptr, sz);
+ break;
+ case EVP_CTRL_GET_RC5_ROUNDS:
+ set_params = 0; /* Fall thru */
+ case EVP_CTRL_SET_RC5_ROUNDS:
+ if (arg < 0)
+ return 0;
+ i = (unsigned int)arg;
+ params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_ROUNDS, &i);
+ break;
+ case EVP_CTRL_SET_SPEED:
+ if (arg < 0)
+ return 0;
+ i = (unsigned int)arg;
+ params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_SPEED, &i);
+ break;
+ case EVP_CTRL_AEAD_GET_TAG:
+ set_params = 0; /* Fall thru */
+ case EVP_CTRL_AEAD_SET_TAG:
+ params[0] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG,
+ ptr, sz);
+ break;
+ case EVP_CTRL_AEAD_TLS1_AAD:
+ /* This one does a set and a get - since it returns a size */
+ params[0] =
+ OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD,
+ ptr, sz);
+ ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
+ if (ret <= 0)
+ goto end;
+ params[0] =
+ OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD, &sz);
+ ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
+ if (ret <= 0)
+ goto end;
+ return sz;
+#ifndef OPENSSL_NO_RC2
+ case EVP_CTRL_GET_RC2_KEY_BITS:
+ set_params = 0; /* Fall thru */
+ case EVP_CTRL_SET_RC2_KEY_BITS:
+ params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_RC2_KEYBITS, &sz);
+ break;
+#endif /* OPENSSL_NO_RC2 */
+#if !defined(OPENSSL_NO_MULTIBLOCK)
+ case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
+ params[0] = OSSL_PARAM_construct_size_t(
+ OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_SEND_FRAGMENT, &sz);
+ ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
+ if (ret <= 0)
return 0;
- }
- return 1;
-}
+ params[0] = OSSL_PARAM_construct_size_t(
+ OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_BUFSIZE, &sz);
+ params[1] = OSSL_PARAM_construct_end();
+ ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
+ if (ret <= 0)
+ return 0;
+ return sz;
+ case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD: {
+ EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *p =
+ (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
-int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
-{
- int ret;
+ if (arg < (int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM))
+ return 0;
- if (!ctx->cipher) {
- EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_NO_CIPHER_SET);
- return 0;
+ params[0] = OSSL_PARAM_construct_octet_string(
+ OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD, (void*)p->inp, p->len);
+ params[1] = OSSL_PARAM_construct_uint(
+ OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
+ ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
+ if (ret <= 0)
+ return ret;
+ /* Retrieve the return values changed by the set */
+ params[0] = OSSL_PARAM_construct_size_t(
+ OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD_PACKLEN, &sz);
+ params[1] = OSSL_PARAM_construct_uint(
+ OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
+ params[2] = OSSL_PARAM_construct_end();
+ ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
+ if (ret <= 0)
+ return 0;
+ return sz;
}
+ case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT: {
+ EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *p =
+ (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
+
+ params[0] = OSSL_PARAM_construct_octet_string(
+ OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC, p->out, p->len);
+
+ params[1] = OSSL_PARAM_construct_octet_string(
+ OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_IN, (void*)p->inp,
+ p->len);
+ params[2] = OSSL_PARAM_construct_uint(
+ OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
+ ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
+ if (ret <= 0)
+ return ret;
+ params[0] = OSSL_PARAM_construct_size_t(
+ OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_LEN, &sz);
+ params[1] = OSSL_PARAM_construct_end();
+ ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
+ if (ret <= 0)
+ return 0;
+ return sz;
+ }
+#endif /* OPENSSL_NO_MULTIBLOCK */
+ case EVP_CTRL_AEAD_SET_MAC_KEY:
+ if (arg < 0)
+ return -1;
+ params[0] = OSSL_PARAM_construct_octet_string(
+ OSSL_CIPHER_PARAM_AEAD_MAC_KEY, ptr, sz);
+ break;
+ }
+
+ if (set_params)
+ ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
+ else
+ ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
+ goto end;
- if (!ctx->cipher->ctrl) {
- EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_NOT_IMPLEMENTED);
+ /* Code below to be removed when legacy support is dropped. */
+legacy:
+ if (ctx->cipher->ctrl == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_NOT_IMPLEMENTED);
return 0;
}
ret = ctx->cipher->ctrl(ctx, type, arg, ptr);
- if (ret == -1) {
- EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL,
- EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED);
+
+ end:
+ if (ret == EVP_CTRL_RET_UNSUPPORTED) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED);
return 0;
}
return ret;
}
+int EVP_CIPHER_get_params(EVP_CIPHER *cipher, OSSL_PARAM params[])
+{
+ if (cipher != NULL && cipher->get_params != NULL)
+ return cipher->get_params(params);
+ return 0;
+}
+
+int EVP_CIPHER_CTX_set_params(EVP_CIPHER_CTX *ctx, const OSSL_PARAM params[])
+{
+ int r = 0;
+ const OSSL_PARAM *p;
+
+ if (ctx->cipher != NULL && ctx->cipher->set_ctx_params != NULL) {
+ r = ctx->cipher->set_ctx_params(ctx->algctx, params);
+ if (r > 0) {
+ p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_KEYLEN);
+ if (p != NULL && !OSSL_PARAM_get_int(p, &ctx->key_len)) {
+ r = 0;
+ ctx->key_len = -1;
+ }
+ }
+ if (r > 0) {
+ p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_IVLEN);
+ if (p != NULL && !OSSL_PARAM_get_int(p, &ctx->iv_len)) {
+ r = 0;
+ ctx->iv_len = -1;
+ }
+ }
+ }
+ return r;
+}
+
+int EVP_CIPHER_CTX_get_params(EVP_CIPHER_CTX *ctx, OSSL_PARAM params[])
+{
+ if (ctx->cipher != NULL && ctx->cipher->get_ctx_params != NULL)
+ return ctx->cipher->get_ctx_params(ctx->algctx, params);
+ return 0;
+}
+
+const OSSL_PARAM *EVP_CIPHER_gettable_params(const EVP_CIPHER *cipher)
+{
+ if (cipher != NULL && cipher->gettable_params != NULL)
+ return cipher->gettable_params(
+ ossl_provider_ctx(EVP_CIPHER_get0_provider(cipher)));
+ return NULL;
+}
+
+const OSSL_PARAM *EVP_CIPHER_settable_ctx_params(const EVP_CIPHER *cipher)
+{
+ void *provctx;
+
+ if (cipher != NULL && cipher->settable_ctx_params != NULL) {
+ provctx = ossl_provider_ctx(EVP_CIPHER_get0_provider(cipher));
+ return cipher->settable_ctx_params(NULL, provctx);
+ }
+ return NULL;
+}
+
+const OSSL_PARAM *EVP_CIPHER_gettable_ctx_params(const EVP_CIPHER *cipher)
+{
+ void *provctx;
+
+ if (cipher != NULL && cipher->gettable_ctx_params != NULL) {
+ provctx = ossl_provider_ctx(EVP_CIPHER_get0_provider(cipher));
+ return cipher->gettable_ctx_params(NULL, provctx);
+ }
+ return NULL;
+}
+
+const OSSL_PARAM *EVP_CIPHER_CTX_settable_params(EVP_CIPHER_CTX *cctx)
+{
+ void *alg;
+
+ if (cctx != NULL && cctx->cipher->settable_ctx_params != NULL) {
+ alg = ossl_provider_ctx(EVP_CIPHER_get0_provider(cctx->cipher));
+ return cctx->cipher->settable_ctx_params(cctx->algctx, alg);
+ }
+ return NULL;
+}
+
+const OSSL_PARAM *EVP_CIPHER_CTX_gettable_params(EVP_CIPHER_CTX *cctx)
+{
+ void *provctx;
+
+ if (cctx != NULL && cctx->cipher->gettable_ctx_params != NULL) {
+ provctx = ossl_provider_ctx(EVP_CIPHER_get0_provider(cctx->cipher));
+ return cctx->cipher->gettable_ctx_params(cctx->algctx, provctx);
+ }
+ return NULL;
+}
+
+#ifndef FIPS_MODULE
+static OSSL_LIB_CTX *EVP_CIPHER_CTX_get_libctx(EVP_CIPHER_CTX *ctx)
+{
+ const EVP_CIPHER *cipher = ctx->cipher;
+ const OSSL_PROVIDER *prov;
+
+ if (cipher == NULL)
+ return NULL;
+
+ prov = EVP_CIPHER_get0_provider(cipher);
+ return ossl_provider_libctx(prov);
+}
+#endif
+
int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key)
{
- int kl;
if (ctx->cipher->flags & EVP_CIPH_RAND_KEY)
return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_RAND_KEY, 0, key);
- kl = EVP_CIPHER_CTX_key_length(ctx);
- if (kl <= 0 || RAND_priv_bytes(key, kl) <= 0)
- return 0;
- return 1;
+
+#ifdef FIPS_MODULE
+ return 0;
+#else
+ {
+ int kl;
+ OSSL_LIB_CTX *libctx = EVP_CIPHER_CTX_get_libctx(ctx);
+
+ kl = EVP_CIPHER_CTX_get_key_length(ctx);
+ if (kl <= 0 || RAND_priv_bytes_ex(libctx, key, kl, 0) <= 0)
+ return 0;
+ return 1;
+ }
+#endif /* FIPS_MODULE */
+}
+
+EVP_CIPHER_CTX *EVP_CIPHER_CTX_dup(const EVP_CIPHER_CTX *in)
+{
+ EVP_CIPHER_CTX *out = EVP_CIPHER_CTX_new();
+
+ if (out != NULL && !EVP_CIPHER_CTX_copy(out, in)) {
+ EVP_CIPHER_CTX_free(out);
+ out = NULL;
+ }
+ return out;
}
int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in)
{
if ((in == NULL) || (in->cipher == NULL)) {
- EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, EVP_R_INPUT_NOT_INITIALIZED);
+ ERR_raise(ERR_LIB_EVP, EVP_R_INPUT_NOT_INITIALIZED);
return 0;
}
goto legacy;
if (in->cipher->dupctx == NULL) {
- EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, EVP_R_NOT_ABLE_TO_COPY_CTX);
+ ERR_raise(ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX);
return 0;
}
EVP_CIPHER_CTX_reset(out);
*out = *in;
- out->provctx = NULL;
+ out->algctx = NULL;
- if (in->fetched_cipher != NULL && !EVP_CIPHER_upref(in->fetched_cipher)) {
+ if (in->fetched_cipher != NULL && !EVP_CIPHER_up_ref(in->fetched_cipher)) {
out->fetched_cipher = NULL;
return 0;
}
- out->provctx = in->cipher->dupctx(in->provctx);
- if (out->provctx == NULL) {
- EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, EVP_R_NOT_ABLE_TO_COPY_CTX);
+ out->algctx = in->cipher->dupctx(in->algctx);
+ if (out->algctx == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX);
return 0;
}
return 1;
- /* TODO(3.0): Remove legacy code below */
+ /* Code below to be removed when legacy support is dropped. */
legacy:
-#ifndef OPENSSL_NO_ENGINE
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
/* Make sure it's safe to copy a cipher context using an ENGINE */
if (in->engine && !ENGINE_init(in->engine)) {
- EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, ERR_R_ENGINE_LIB);
+ ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
return 0;
}
#endif
out->cipher_data = OPENSSL_malloc(in->cipher->ctx_size);
if (out->cipher_data == NULL) {
out->cipher = NULL;
- EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, ERR_R_MALLOC_FAILURE);
return 0;
}
memcpy(out->cipher_data, in->cipher_data, in->cipher->ctx_size);
if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY)
if (!in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out)) {
out->cipher = NULL;
- EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, EVP_R_INITIALIZATION_ERROR);
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
return 0;
}
return 1;
}
-static void *evp_cipher_from_dispatch(int nid, const OSSL_DISPATCH *fns,
- OSSL_PROVIDER *prov)
+EVP_CIPHER *evp_cipher_new(void)
+{
+ EVP_CIPHER *cipher = OPENSSL_zalloc(sizeof(EVP_CIPHER));
+
+ if (cipher != NULL && !CRYPTO_NEW_REF(&cipher->refcnt, 1)) {
+ OPENSSL_free(cipher);
+ return NULL;
+ }
+ return cipher;
+}
+
+/*
+ * FIPS module note: since internal fetches will be entirely
+ * provider based, we know that none of its code depends on legacy
+ * NIDs or any functionality that use them.
+ */
+#ifndef FIPS_MODULE
+/* After removal of legacy support get rid of the need for legacy NIDs */
+static void set_legacy_nid(const char *name, void *vlegacy_nid)
+{
+ int nid;
+ int *legacy_nid = vlegacy_nid;
+ /*
+ * We use lowest level function to get the associated method, because
+ * higher level functions such as EVP_get_cipherbyname() have changed
+ * to look at providers too.
+ */
+ const void *legacy_method = OBJ_NAME_get(name, OBJ_NAME_TYPE_CIPHER_METH);
+
+ if (*legacy_nid == -1) /* We found a clash already */
+ return;
+ if (legacy_method == NULL)
+ return;
+ nid = EVP_CIPHER_get_nid(legacy_method);
+ if (*legacy_nid != NID_undef && *legacy_nid != nid) {
+ *legacy_nid = -1;
+ return;
+ }
+ *legacy_nid = nid;
+}
+#endif
+
+static void *evp_cipher_from_algorithm(const int name_id,
+ const OSSL_ALGORITHM *algodef,
+ OSSL_PROVIDER *prov)
{
+ const OSSL_DISPATCH *fns = algodef->implementation;
EVP_CIPHER *cipher = NULL;
int fnciphcnt = 0, fnctxcnt = 0;
- if ((cipher = EVP_CIPHER_meth_new(nid, 0, 0)) == NULL)
+ if ((cipher = evp_cipher_new()) == NULL) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_EVP_LIB);
+ return NULL;
+ }
+
+#ifndef FIPS_MODULE
+ cipher->nid = NID_undef;
+ if (!evp_names_do_all(prov, name_id, set_legacy_nid, &cipher->nid)
+ || cipher->nid == -1) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
+ EVP_CIPHER_free(cipher);
+ return NULL;
+ }
+#endif
+
+ cipher->name_id = name_id;
+ if ((cipher->type_name = ossl_algorithm_get1_first_name(algodef)) == NULL) {
+ EVP_CIPHER_free(cipher);
return NULL;
+ }
+ cipher->description = algodef->algorithm_description;
for (; fns->function_id != 0; fns++) {
switch (fns->function_id) {
case OSSL_FUNC_CIPHER_NEWCTX:
if (cipher->newctx != NULL)
break;
- cipher->newctx = OSSL_get_OP_cipher_newctx(fns);
+ cipher->newctx = OSSL_FUNC_cipher_newctx(fns);
fnctxcnt++;
break;
case OSSL_FUNC_CIPHER_ENCRYPT_INIT:
if (cipher->einit != NULL)
break;
- cipher->einit = OSSL_get_OP_cipher_encrypt_init(fns);
+ cipher->einit = OSSL_FUNC_cipher_encrypt_init(fns);
fnciphcnt++;
break;
case OSSL_FUNC_CIPHER_DECRYPT_INIT:
if (cipher->dinit != NULL)
break;
- cipher->dinit = OSSL_get_OP_cipher_decrypt_init(fns);
+ cipher->dinit = OSSL_FUNC_cipher_decrypt_init(fns);
fnciphcnt++;
break;
case OSSL_FUNC_CIPHER_UPDATE:
if (cipher->cupdate != NULL)
break;
- cipher->cupdate = OSSL_get_OP_cipher_update(fns);
+ cipher->cupdate = OSSL_FUNC_cipher_update(fns);
fnciphcnt++;
break;
case OSSL_FUNC_CIPHER_FINAL:
if (cipher->cfinal != NULL)
break;
- cipher->cfinal = OSSL_get_OP_cipher_final(fns);
+ cipher->cfinal = OSSL_FUNC_cipher_final(fns);
fnciphcnt++;
break;
case OSSL_FUNC_CIPHER_CIPHER:
if (cipher->ccipher != NULL)
break;
- cipher->ccipher = OSSL_get_OP_cipher_cipher(fns);
+ cipher->ccipher = OSSL_FUNC_cipher_cipher(fns);
break;
case OSSL_FUNC_CIPHER_FREECTX:
if (cipher->freectx != NULL)
break;
- cipher->freectx = OSSL_get_OP_cipher_freectx(fns);
+ cipher->freectx = OSSL_FUNC_cipher_freectx(fns);
fnctxcnt++;
break;
case OSSL_FUNC_CIPHER_DUPCTX:
if (cipher->dupctx != NULL)
break;
- cipher->dupctx = OSSL_get_OP_cipher_dupctx(fns);
+ cipher->dupctx = OSSL_FUNC_cipher_dupctx(fns);
break;
- case OSSL_FUNC_CIPHER_KEY_LENGTH:
- if (cipher->key_length != NULL)
+ case OSSL_FUNC_CIPHER_GET_PARAMS:
+ if (cipher->get_params != NULL)
break;
- cipher->key_length = OSSL_get_OP_cipher_key_length(fns);
+ cipher->get_params = OSSL_FUNC_cipher_get_params(fns);
break;
- case OSSL_FUNC_CIPHER_IV_LENGTH:
- if (cipher->iv_length != NULL)
+ case OSSL_FUNC_CIPHER_GET_CTX_PARAMS:
+ if (cipher->get_ctx_params != NULL)
break;
- cipher->iv_length = OSSL_get_OP_cipher_iv_length(fns);
+ cipher->get_ctx_params = OSSL_FUNC_cipher_get_ctx_params(fns);
break;
- case OSSL_FUNC_CIPHER_BLOCK_SIZE:
- if (cipher->blocksize != NULL)
+ case OSSL_FUNC_CIPHER_SET_CTX_PARAMS:
+ if (cipher->set_ctx_params != NULL)
break;
- cipher->blocksize = OSSL_get_OP_cipher_block_size(fns);
+ cipher->set_ctx_params = OSSL_FUNC_cipher_set_ctx_params(fns);
break;
- case OSSL_FUNC_CIPHER_GET_PARAMS:
- if (cipher->get_params != NULL)
+ case OSSL_FUNC_CIPHER_GETTABLE_PARAMS:
+ if (cipher->gettable_params != NULL)
break;
- cipher->get_params = OSSL_get_OP_cipher_get_params(fns);
+ cipher->gettable_params = OSSL_FUNC_cipher_gettable_params(fns);
break;
- case OSSL_FUNC_CIPHER_CTX_GET_PARAMS:
- if (cipher->ctx_get_params != NULL)
+ case OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS:
+ if (cipher->gettable_ctx_params != NULL)
break;
- cipher->ctx_get_params = OSSL_get_OP_cipher_ctx_get_params(fns);
+ cipher->gettable_ctx_params =
+ OSSL_FUNC_cipher_gettable_ctx_params(fns);
break;
- case OSSL_FUNC_CIPHER_CTX_SET_PARAMS:
- if (cipher->ctx_set_params != NULL)
+ case OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS:
+ if (cipher->settable_ctx_params != NULL)
break;
- cipher->ctx_set_params = OSSL_get_OP_cipher_ctx_set_params(fns);
+ cipher->settable_ctx_params =
+ OSSL_FUNC_cipher_settable_ctx_params(fns);
break;
}
}
if ((fnciphcnt != 0 && fnciphcnt != 3 && fnciphcnt != 4)
|| (fnciphcnt == 0 && cipher->ccipher == NULL)
- || fnctxcnt != 2
- || cipher->blocksize == NULL
- || cipher->iv_length == NULL
- || cipher->key_length == NULL) {
+ || fnctxcnt != 2) {
/*
* In order to be a consistent set of functions we must have at least
* a complete set of "encrypt" functions, or a complete set of "decrypt"
- * functions, or a single "cipher" function. In all cases we need a
- * complete set of context management functions, as well as the
- * blocksize, iv_length and key_length functions.
+ * functions, or a single "cipher" function. In all cases we need both
+ * the "newctx" and "freectx" functions.
*/
- EVP_CIPHER_meth_free(cipher);
- EVPerr(EVP_F_EVP_CIPHER_FROM_DISPATCH, EVP_R_INVALID_PROVIDER_FUNCTIONS);
+ EVP_CIPHER_free(cipher);
+ ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
return NULL;
}
cipher->prov = prov;
if (prov != NULL)
- ossl_provider_upref(prov);
+ ossl_provider_up_ref(prov);
+
+ if (!evp_cipher_cache_constants(cipher)) {
+ EVP_CIPHER_free(cipher);
+ ERR_raise(ERR_LIB_EVP, EVP_R_CACHE_CONSTANTS_FAILED);
+ cipher = NULL;
+ }
return cipher;
}
-static int evp_cipher_upref(void *cipher)
+static int evp_cipher_up_ref(void *cipher)
{
- return EVP_CIPHER_upref(cipher);
+ return EVP_CIPHER_up_ref(cipher);
}
static void evp_cipher_free(void *cipher)
{
- EVP_CIPHER_meth_free(cipher);
+ EVP_CIPHER_free(cipher);
}
-static int evp_cipher_nid(void *vcipher)
+EVP_CIPHER *EVP_CIPHER_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
+ const char *properties)
{
- EVP_CIPHER *cipher = vcipher;
+ EVP_CIPHER *cipher =
+ evp_generic_fetch(ctx, OSSL_OP_CIPHER, algorithm, properties,
+ evp_cipher_from_algorithm, evp_cipher_up_ref,
+ evp_cipher_free);
- return cipher->nid;
+ return cipher;
}
-EVP_CIPHER *EVP_CIPHER_fetch(OPENSSL_CTX *ctx, const char *algorithm,
- const char *properties)
+int EVP_CIPHER_up_ref(EVP_CIPHER *cipher)
+{
+ int ref = 0;
+
+ if (cipher->origin == EVP_ORIG_DYNAMIC)
+ CRYPTO_UP_REF(&cipher->refcnt, &ref);
+ return 1;
+}
+
+void evp_cipher_free_int(EVP_CIPHER *cipher)
+{
+ OPENSSL_free(cipher->type_name);
+ ossl_provider_free(cipher->prov);
+ CRYPTO_FREE_REF(&cipher->refcnt);
+ OPENSSL_free(cipher);
+}
+
+void EVP_CIPHER_free(EVP_CIPHER *cipher)
+{
+ int i;
+
+ if (cipher == NULL || cipher->origin != EVP_ORIG_DYNAMIC)
+ return;
+
+ CRYPTO_DOWN_REF(&cipher->refcnt, &i);
+ if (i > 0)
+ return;
+ evp_cipher_free_int(cipher);
+}
+
+void EVP_CIPHER_do_all_provided(OSSL_LIB_CTX *libctx,
+ void (*fn)(EVP_CIPHER *mac, void *arg),
+ void *arg)
{
- return evp_generic_fetch(ctx, OSSL_OP_CIPHER, algorithm, properties,
- evp_cipher_from_dispatch, evp_cipher_upref,
- evp_cipher_free, evp_cipher_nid);
+ evp_generic_do_all(libctx, OSSL_OP_CIPHER,
+ (void (*)(void *, void *))fn, arg,
+ evp_cipher_from_algorithm, evp_cipher_up_ref,
+ evp_cipher_free);
}