/*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * 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
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/rand.h>
+#include <openssl/rand_drbg.h>
#include <openssl/engine.h>
-#include "internal/evp_int.h"
-#include "evp_locl.h"
+#include <openssl/params.h>
+#include <openssl/core_names.h>
+#include "crypto/evp.h"
+#include "internal/provider.h"
+#include "evp_local.h"
-int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *c)
+int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx)
{
- if (c == NULL)
+ if (ctx == NULL)
return 1;
- if (c->cipher != NULL) {
- if (c->cipher->cleanup && !c->cipher->cleanup(c))
+
+ if (ctx->cipher == NULL || ctx->cipher->prov == NULL)
+ goto legacy;
+
+ if (ctx->provctx != NULL) {
+ if (ctx->cipher->freectx != NULL)
+ ctx->cipher->freectx(ctx->provctx);
+ ctx->provctx = NULL;
+ }
+ if (ctx->fetched_cipher != NULL)
+ EVP_CIPHER_free(ctx->fetched_cipher);
+ memset(ctx, 0, sizeof(*ctx));
+
+ return 1;
+
+ /* TODO(3.0): Remove legacy code below */
+ legacy:
+
+ if (ctx->cipher != NULL) {
+ if (ctx->cipher->cleanup && !ctx->cipher->cleanup(ctx))
return 0;
/* Cleanse cipher context data */
- if (c->cipher_data && c->cipher->ctx_size)
- OPENSSL_cleanse(c->cipher_data, c->cipher->ctx_size);
+ if (ctx->cipher_data && ctx->cipher->ctx_size)
+ OPENSSL_cleanse(ctx->cipher_data, ctx->cipher->ctx_size);
}
- OPENSSL_free(c->cipher_data);
-#ifndef OPENSSL_NO_ENGINE
- ENGINE_finish(c->engine);
+ OPENSSL_free(ctx->cipher_data);
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
+ ENGINE_finish(ctx->engine);
#endif
- memset(c, 0, sizeof(*c));
+ memset(ctx, 0, sizeof(*ctx));
return 1;
}
int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
const unsigned char *key, const unsigned char *iv, int enc)
{
- EVP_CIPHER_CTX_reset(ctx);
+ if (cipher != NULL)
+ EVP_CIPHER_CTX_reset(ctx);
return EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, enc);
}
ENGINE *impl, const unsigned char *key,
const unsigned char *iv, int enc)
{
- if (enc == -1)
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
+ ENGINE *tmpimpl = NULL;
+#endif
+ const EVP_CIPHER *tmpcipher;
+
+ /*
+ * enc == 1 means we are encrypting.
+ * enc == 0 means we are decrypting.
+ * enc == -1 means, use the previously initialised value for encrypt/decrypt
+ */
+ if (enc == -1) {
enc = ctx->encrypt;
- else {
+ } else {
if (enc)
enc = 1;
ctx->encrypt = enc;
}
-#ifndef OPENSSL_NO_ENGINE
+
+ if (cipher == NULL && ctx->cipher == NULL) {
+ EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_NO_CIPHER_SET);
+ return 0;
+ }
+
+ /* TODO(3.0): Legacy work around code below. Remove this */
+
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
/*
* 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 (ctx->engine && ctx->cipher
&& (cipher == NULL || cipher->nid == ctx->cipher->nid))
goto skip_to_init;
+
+ if (cipher != NULL && impl == NULL) {
+ /* Ask if an ENGINE is reserved for this job */
+ tmpimpl = ENGINE_get_cipher_engine(cipher->nid);
+ }
+#endif
+
+ /*
+ * If there are engines involved then we should use legacy handling for now.
+ */
+ if (ctx->engine != NULL
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
+ || tmpimpl != NULL
+#endif
+ || impl != NULL) {
+ if (ctx->cipher == ctx->fetched_cipher)
+ ctx->cipher = NULL;
+ 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:
+ case NID_aes_128_xts:
+ case NID_aes_256_xts:
+ case NID_aes_256_ocb:
+ case NID_aes_192_ocb:
+ case NID_aes_128_ocb:
+ case NID_aes_256_gcm:
+ case NID_aes_192_gcm:
+ case NID_aes_128_gcm:
+ case NID_id_aes256_wrap:
+ case NID_id_aes256_wrap_pad:
+ case NID_id_aes192_wrap:
+ case NID_id_aes192_wrap_pad:
+ case NID_id_aes128_wrap:
+ case NID_id_aes128_wrap_pad:
+ case NID_aria_256_gcm:
+ case NID_aria_192_gcm:
+ case NID_aria_128_gcm:
+ case NID_aes_256_ccm:
+ case NID_aes_192_ccm:
+ case NID_aes_128_ccm:
+ case NID_aria_256_ccm:
+ case NID_aria_192_ccm:
+ case NID_aria_128_ccm:
+ case NID_aria_256_ecb:
+ case NID_aria_192_ecb:
+ case NID_aria_128_ecb:
+ case NID_aria_256_cbc:
+ case NID_aria_192_cbc:
+ case NID_aria_128_cbc:
+ case NID_aria_256_ofb128:
+ case NID_aria_192_ofb128:
+ case NID_aria_128_ofb128:
+ case NID_aria_256_cfb128:
+ case NID_aria_192_cfb128:
+ case NID_aria_128_cfb128:
+ case NID_aria_256_cfb1:
+ case NID_aria_192_cfb1:
+ case NID_aria_128_cfb1:
+ case NID_aria_256_cfb8:
+ case NID_aria_192_cfb8:
+ case NID_aria_128_cfb8:
+ case NID_aria_256_ctr:
+ case NID_aria_192_ctr:
+ case NID_aria_128_ctr:
+ case NID_camellia_256_ecb:
+ case NID_camellia_192_ecb:
+ case NID_camellia_128_ecb:
+ case NID_camellia_256_cbc:
+ case NID_camellia_192_cbc:
+ case NID_camellia_128_cbc:
+ case NID_camellia_256_ofb128:
+ case NID_camellia_192_ofb128:
+ case NID_camellia_128_ofb128:
+ case NID_camellia_256_cfb128:
+ case NID_camellia_192_cfb128:
+ case NID_camellia_128_cfb128:
+ case NID_camellia_256_cfb1:
+ case NID_camellia_192_cfb1:
+ case NID_camellia_128_cfb1:
+ case NID_camellia_256_cfb8:
+ case NID_camellia_192_cfb8:
+ case NID_camellia_128_cfb8:
+ case NID_camellia_256_ctr:
+ case NID_camellia_192_ctr:
+ case NID_camellia_128_ctr:
+ case NID_des_ede3_cbc:
+ case NID_des_ede3_ecb:
+ case NID_des_ede3_ofb64:
+ case NID_des_ede3_cfb64:
+ case NID_des_ede3_cfb8:
+ case NID_des_ede3_cfb1:
+ case NID_des_ede_cbc:
+ case NID_des_ede_ecb:
+ case NID_des_ede_ofb64:
+ case NID_des_ede_cfb64:
+ case NID_desx_cbc:
+ case NID_des_cbc:
+ case NID_des_ecb:
+ case NID_des_cfb1:
+ case NID_des_cfb8:
+ case NID_des_cfb64:
+ case NID_des_ofb64:
+ case NID_id_smime_alg_CMS3DESwrap:
+ case NID_bf_cbc:
+ case NID_bf_ecb:
+ case NID_bf_cfb64:
+ case NID_bf_ofb64:
+ case NID_idea_cbc:
+ case NID_idea_ecb:
+ case NID_idea_cfb64:
+ case NID_idea_ofb64:
+ case NID_cast5_cbc:
+ case NID_cast5_ecb:
+ case NID_cast5_cfb64:
+ case NID_cast5_ofb64:
+ case NID_seed_cbc:
+ case NID_seed_ecb:
+ case NID_seed_cfb128:
+ case NID_seed_ofb128:
+ case NID_sm4_cbc:
+ case NID_sm4_ecb:
+ case NID_sm4_ctr:
+ case NID_sm4_cfb128:
+ case NID_sm4_ofb128:
+ case NID_rc4:
+ case NID_rc4_40:
+ case NID_rc5_cbc:
+ case NID_rc5_ecb:
+ case NID_rc5_cfb64:
+ case NID_rc5_ofb64:
+ case NID_rc2_cbc:
+ case NID_rc2_40_cbc:
+ case NID_rc2_64_cbc:
+ case NID_rc2_cfb64:
+ case NID_rc2_ofb64:
+ case NID_chacha20:
+ case NID_chacha20_poly1305:
+ break;
+ default:
+ goto legacy;
+ }
+ }
+
+ /*
+ * Ensure a context left lying around from last time is cleared
+ * (legacy code)
+ */
+ if (cipher != NULL && ctx->cipher != NULL) {
+ OPENSSL_clear_free(ctx->cipher_data, ctx->cipher->ctx_size);
+ ctx->cipher_data = NULL;
+ }
+
+
+ /* TODO(3.0): Start of non-legacy code below */
+
+ /* Ensure a context left lying around from last time is cleared */
+ if (cipher != NULL && ctx->cipher != NULL) {
+ unsigned long flags = ctx->flags;
+
+ EVP_CIPHER_CTX_reset(ctx);
+ /* Restore encrypt and flags */
+ ctx->encrypt = enc;
+ ctx->flags = flags;
+ }
+
+ if (cipher == NULL)
+ cipher = ctx->cipher;
+
+ if (cipher->prov == NULL) {
+#ifdef FIPS_MODE
+ /* We only do explict fetches inside the FIPS module */
+ EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ return 0;
+#else
+ EVP_CIPHER *provciph =
+ EVP_CIPHER_fetch(NULL, OBJ_nid2sn(cipher->nid), "");
+
+ if (provciph == NULL) {
+ EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ return 0;
+ }
+ cipher = provciph;
+ EVP_CIPHER_free(ctx->fetched_cipher);
+ ctx->fetched_cipher = provciph;
#endif
- if (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);
+ return 0;
+ }
+ }
+
+ if ((ctx->flags & EVP_CIPH_NO_PADDING) != 0) {
+ /*
+ * If this ctx was already set up for no padding then we need to tell
+ * the new cipher about it.
+ */
+ if (!EVP_CIPHER_CTX_set_padding(ctx, 0))
+ return 0;
+ }
+
+ if (enc) {
+ if (ctx->cipher->einit == NULL) {
+ EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ return 0;
+ }
+
+ return ctx->cipher->einit(ctx->provctx,
+ key,
+ key == NULL ? 0
+ : EVP_CIPHER_CTX_key_length(ctx),
+ iv,
+ iv == NULL ? 0
+ : EVP_CIPHER_CTX_iv_length(ctx));
+ }
+
+ if (ctx->cipher->dinit == NULL) {
+ EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
+ return 0;
+ }
+
+ return ctx->cipher->dinit(ctx->provctx,
+ key,
+ key == NULL ? 0
+ : EVP_CIPHER_CTX_key_length(ctx),
+ iv,
+ iv == NULL ? 0
+ : EVP_CIPHER_CTX_iv_length(ctx));
+
+ /* TODO(3.0): Remove legacy code below */
+ legacy:
+
+ if (cipher != NULL) {
/*
- * Ensure a context left lying around from last time is cleared (the
- * previous check attempted to avoid this if the same ENGINE and
+ * Ensure a context left lying around from last time is cleared (we
+ * previously attempted to avoid this if the same ENGINE and
* EVP_CIPHER could be used).
*/
if (ctx->cipher) {
ctx->encrypt = enc;
ctx->flags = flags;
}
-#ifndef OPENSSL_NO_ENGINE
- if (impl) {
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
+ if (impl != NULL) {
if (!ENGINE_init(impl)) {
EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
return 0;
}
- } else
- /* Ask if an ENGINE is reserved for this job */
- impl = ENGINE_get_cipher_engine(cipher->nid);
- if (impl) {
+ } else {
+ impl = tmpimpl;
+ }
+ if (impl != NULL) {
/* There's an ENGINE for this job ... (apparently) */
const EVP_CIPHER *c = ENGINE_get_cipher(impl, cipher->nid);
- if (!c) {
+
+ if (c == NULL) {
/*
* One positive side-effect of US's export control history,
* is that we should at least be able to avoid using US
* from an ENGINE and we need to release it when done.
*/
ctx->engine = impl;
- } else
+ } else {
ctx->engine = NULL;
+ }
#endif
ctx->cipher = cipher;
if (ctx->cipher->ctx_size) {
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;
}
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)) {
+ ctx->cipher = NULL;
EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
return 0;
}
}
- } else if (!ctx->cipher) {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_NO_CIPHER_SET);
- return 0;
}
-#ifndef OPENSSL_NO_ENGINE
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
skip_to_init:
#endif
+ if (ctx->cipher == NULL)
+ return 0;
+
/* we assume block size is a power of 2 in *cryptUpdate */
OPENSSL_assert(ctx->cipher->block_size == 1
|| ctx->cipher->block_size == 8
*/
int overlapped = (len > 0) & (diff != 0) & ((diff < (PTRDIFF_T)len) |
(diff > (0 - (PTRDIFF_T)len)));
- assert(!overlapped);
+
return overlapped;
}
-int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
- const unsigned char *in, int inl)
+static int evp_EncryptDecryptUpdate(EVP_CIPHER_CTX *ctx,
+ unsigned char *out, int *outl,
+ const unsigned char *in, int inl)
{
- int i, j, bl;
+ int i, j, bl, cmpl = inl;
+
+ if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
+ cmpl = (cmpl + 7) / 8;
bl = ctx->cipher->block_size;
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, inl)) {
- EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
+ if (bl == 1 && is_partially_overlapping(out, in, cmpl)) {
+ EVPerr(EVP_F_EVP_ENCRYPTDECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
return 0;
}
*outl = 0;
return inl == 0;
}
- if (is_partially_overlapping(out + ctx->buf_len, in, inl)) {
- EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
+ if (is_partially_overlapping(out + ctx->buf_len, in, cmpl)) {
+ EVPerr(EVP_F_EVP_ENCRYPTDECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
return 0;
}
return 1;
}
+
+int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
+ const unsigned char *in, int inl)
+{
+ int ret;
+ size_t soutl;
+ int blocksize;
+
+ /* Prevent accidental use of decryption context when encrypting */
+ if (!ctx->encrypt) {
+ EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_INVALID_OPERATION);
+ return 0;
+ }
+
+ if (ctx->cipher == NULL) {
+ EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_NO_CIPHER_SET);
+ return 0;
+ }
+
+ if (ctx->cipher->prov == NULL)
+ goto legacy;
+
+ blocksize = EVP_CIPHER_CTX_block_size(ctx);
+
+ if (ctx->cipher->cupdate == NULL || blocksize < 1) {
+ EVPerr(EVP_F_EVP_ENCRYPTUPDATE, 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) {
+ if (soutl > INT_MAX) {
+ EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_UPDATE_ERROR);
+ return 0;
+ }
+ *outl = soutl;
+ }
+
+ return ret;
+
+ /* TODO(3.0): Remove legacy code below */
+ legacy:
+
+ return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl);
+}
+
int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
{
int ret;
{
int n, ret;
unsigned int i, b, bl;
+ size_t soutl;
+ int blocksize;
+
+ /* Prevent accidental use of decryption context when encrypting */
+ if (!ctx->encrypt) {
+ EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX, EVP_R_INVALID_OPERATION);
+ return 0;
+ }
+
+ if (ctx->cipher == NULL) {
+ EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX, EVP_R_NO_CIPHER_SET);
+ return 0;
+ }
+ if (ctx->cipher->prov == NULL)
+ goto legacy;
+
+ blocksize = EVP_CIPHER_CTX_block_size(ctx);
+
+ if (blocksize < 1 || ctx->cipher->cfinal == NULL) {
+ EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX, EVP_R_FINAL_ERROR);
+ return 0;
+ }
+
+ ret = ctx->cipher->cfinal(ctx->provctx, out, &soutl,
+ blocksize == 1 ? 0 : blocksize);
+
+ if (ret) {
+ if (soutl > INT_MAX) {
+ EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX, EVP_R_FINAL_ERROR);
+ return 0;
+ }
+ *outl = soutl;
+ }
+
+ return ret;
+
+ /* TODO(3.0): Remove legacy code below */
+ legacy:
if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
ret = ctx->cipher->do_cipher(ctx, out, NULL, 0);
}
b = ctx->cipher->block_size;
- OPENSSL_assert(b <= sizeof ctx->buf);
+ OPENSSL_assert(b <= sizeof(ctx->buf));
if (b == 1) {
*outl = 0;
return 1;
int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
const unsigned char *in, int inl)
{
- int fix_len;
+ int fix_len, cmpl = inl, ret;
unsigned int b;
+ size_t soutl;
+ int blocksize;
+
+ /* Prevent accidental use of encryption context when decrypting */
+ if (ctx->encrypt) {
+ EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_INVALID_OPERATION);
+ return 0;
+ }
+
+ if (ctx->cipher == NULL) {
+ EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_NO_CIPHER_SET);
+ return 0;
+ }
+ if (ctx->cipher->prov == NULL)
+ goto legacy;
+
+ blocksize = EVP_CIPHER_CTX_block_size(ctx);
+
+ if (ctx->cipher->cupdate == NULL || blocksize < 1) {
+ EVPerr(EVP_F_EVP_DECRYPTUPDATE, 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) {
+ if (soutl > INT_MAX) {
+ EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_UPDATE_ERROR);
+ return 0;
+ }
+ *outl = soutl;
+ }
+
+ return ret;
+
+ /* TODO(3.0): Remove legacy code below */
+ legacy:
b = ctx->cipher->block_size;
+ if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
+ cmpl = (cmpl + 7) / 8;
+
if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
- if (b == 1 && is_partially_overlapping(out, in, inl)) {
+ if (b == 1 && is_partially_overlapping(out, in, cmpl)) {
EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
return 0;
}
}
if (ctx->flags & EVP_CIPH_NO_PADDING)
- return EVP_EncryptUpdate(ctx, out, outl, in, inl);
+ return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl);
- OPENSSL_assert(b <= sizeof ctx->final);
+ OPENSSL_assert(b <= sizeof(ctx->final));
if (ctx->final_used) {
/* see comment about PTRDIFF_T comparison above */
} else
fix_len = 0;
- if (!EVP_EncryptUpdate(ctx, out, outl, in, inl))
+ if (!evp_EncryptDecryptUpdate(ctx, out, outl, in, inl))
return 0;
/*
{
int i, n;
unsigned int b;
- *outl = 0;
+ size_t soutl;
+ int ret;
+ int blocksize;
+
+ /* Prevent accidental use of encryption context when decrypting */
+ if (ctx->encrypt) {
+ EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_INVALID_OPERATION);
+ return 0;
+ }
+ if (ctx->cipher == NULL) {
+ EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_NO_CIPHER_SET);
+ return 0;
+ }
+
+ if (ctx->cipher->prov == NULL)
+ goto legacy;
+
+ blocksize = EVP_CIPHER_CTX_block_size(ctx);
+
+ if (blocksize < 1 || ctx->cipher->cfinal == NULL) {
+ EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_FINAL_ERROR);
+ return 0;
+ }
+
+ ret = ctx->cipher->cfinal(ctx->provctx, out, &soutl,
+ blocksize == 1 ? 0 : blocksize);
+
+ if (ret) {
+ if (soutl > INT_MAX) {
+ EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_FINAL_ERROR);
+ return 0;
+ }
+ *outl = soutl;
+ }
+
+ return ret;
+
+ /* TODO(3.0): Remove legacy code below */
+ legacy:
+
+ *outl = 0;
if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
i = ctx->cipher->do_cipher(ctx, out, NULL, 0);
if (i < 0)
if (b > 1) {
if (ctx->buf_len || !ctx->final_used) {
EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_WRONG_FINAL_BLOCK_LENGTH);
- return (0);
+ return 0;
}
- OPENSSL_assert(b <= sizeof ctx->final);
+ OPENSSL_assert(b <= sizeof(ctx->final));
/*
* The following assumes that the ciphertext has been authenticated.
n = ctx->final[b - 1];
if (n == 0 || n > (int)b) {
EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_BAD_DECRYPT);
- return (0);
+ return 0;
}
for (i = 0; i < n; i++) {
if (ctx->final[--b] != n) {
EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_BAD_DECRYPT);
- return (0);
+ return 0;
}
}
n = ctx->cipher->block_size - n;
*outl = n;
} else
*outl = 0;
- return (1);
+ return 1;
}
int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen)
{
+ int ok;
+ OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
+ size_t len = keylen;
+
+ params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &len);
+ ok = evp_do_ciph_ctx_setparams(c->cipher, c->provctx, params);
+
+ if (ok != EVP_CTRL_RET_UNSUPPORTED)
+ return ok;
+
+ /* TODO(3.0) legacy code follows */
if (c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH)
return EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_KEY_LENGTH, keylen, NULL);
- if (c->key_len == keylen)
+ if (EVP_CIPHER_CTX_key_length(c) == keylen)
return 1;
if ((keylen > 0) && (c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) {
c->key_len = keylen;
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;
- return 1;
+
+ params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_PADDING, &pd);
+ ok = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
+
+ return ok != 0;
}
int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
{
- int ret;
- if (!ctx->cipher) {
+ int ret = EVP_CTRL_RET_UNSUPPORTED;
+ int set_params = 1;
+ size_t sz = arg;
+ unsigned int i;
+ OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
+
+ if (ctx == NULL || ctx->cipher == NULL) {
EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_NO_CIPHER_SET);
return 0;
}
- if (!ctx->cipher->ctrl) {
+ if (ctx->cipher->prov == NULL)
+ goto legacy;
+
+ switch (type) {
+ case EVP_CTRL_SET_KEY_LENGTH:
+ params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &sz);
+ 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_SET_PIPELINE_OUTPUT_BUFS: /* Used by DASYNC */
+ case EVP_CTRL_INIT: /* TODO(3.0) Purely legacy, no provider counterpart */
+ default:
+ goto end;
+ case EVP_CTRL_GET_IV:
+ set_params = 0;
+ params[0] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_IV,
+ ptr, sz);
+ break;
+ case EVP_CTRL_AEAD_SET_IVLEN:
+ if (arg < 0)
+ return 0;
+ params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &sz);
+ break;
+ case EVP_CTRL_GCM_SET_IV_FIXED:
+ params[0] =
+ OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED,
+ 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_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_SET_MAC_KEY:
+ params[0] =
+ OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_MAC_KEY,
+ ptr, sz);
+ break;
+ case EVP_CTRL_AEAD_TLS1_AAD:
+ /* This one does a set and a get - since it returns a padding 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->provctx, 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->provctx, 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 (set_params)
+ ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
+ else
+ ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
+ goto end;
+
+/* TODO(3.0): Remove legacy code below */
+legacy:
+ if (ctx->cipher->ctrl == NULL) {
EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_NOT_IMPLEMENTED);
return 0;
}
ret = ctx->cipher->ctrl(ctx, type, arg, ptr);
- if (ret == -1) {
+
+ end:
+ if (ret == EVP_CTRL_RET_UNSUPPORTED) {
EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL,
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[])
+{
+ if (ctx->cipher != NULL && ctx->cipher->set_ctx_params != NULL)
+ return ctx->cipher->set_ctx_params(ctx->provctx, params);
+ return 0;
+}
+
+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->provctx, 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();
+ return NULL;
+}
+
+const OSSL_PARAM *EVP_CIPHER_settable_ctx_params(const EVP_CIPHER *cipher)
+{
+ if (cipher != NULL && cipher->settable_ctx_params != NULL)
+ return cipher->settable_ctx_params();
+ return NULL;
+}
+
+const OSSL_PARAM *EVP_CIPHER_gettable_ctx_params(const EVP_CIPHER *cipher)
+{
+ if (cipher != NULL && cipher->gettable_ctx_params != NULL)
+ return cipher->gettable_ctx_params();
+ return NULL;
+}
+
int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key)
{
if (ctx->cipher->flags & EVP_CIPH_RAND_KEY)
return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_RAND_KEY, 0, key);
- if (RAND_bytes(key, ctx->key_len) <= 0)
- return 0;
- return 1;
+
+#ifdef FIPS_MODE
+ return 0;
+#else
+ {
+ int kl;
+
+ kl = EVP_CIPHER_CTX_key_length(ctx);
+ if (kl <= 0 || RAND_priv_bytes(key, kl) <= 0)
+ return 0;
+ return 1;
+ }
+#endif /* FIPS_MODE */
}
int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in)
EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, EVP_R_INPUT_NOT_INITIALIZED);
return 0;
}
-#ifndef OPENSSL_NO_ENGINE
+
+ if (in->cipher->prov == NULL)
+ goto legacy;
+
+ if (in->cipher->dupctx == NULL) {
+ EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, EVP_R_NOT_ABLE_TO_COPY_CTX);
+ return 0;
+ }
+
+ EVP_CIPHER_CTX_reset(out);
+
+ *out = *in;
+ out->provctx = NULL;
+
+ 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);
+ return 0;
+ }
+
+ return 1;
+
+ /* TODO(3.0): Remove legacy code below */
+ legacy:
+
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
/* 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);
if (in->cipher_data && in->cipher->ctx_size) {
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;
}
}
if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY)
- return in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out);
+ 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);
+ return 0;
+ }
+ return 1;
+}
+
+EVP_CIPHER *evp_cipher_new(void)
+{
+ EVP_CIPHER *cipher = OPENSSL_zalloc(sizeof(EVP_CIPHER));
+
+ if (cipher != NULL) {
+ cipher->lock = CRYPTO_THREAD_lock_new();
+ if (cipher->lock == NULL) {
+ OPENSSL_free(cipher);
+ return NULL;
+ }
+ cipher->refcnt = 1;
+ }
+ 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_MODE
+/* TODO(3.x) 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;
+
+ if (*legacy_nid == -1) /* We found a clash already */
+ return;
+ if ((nid = OBJ_sn2nid(name)) == NID_undef
+ && (nid = OBJ_ln2nid(name)) == NID_undef)
+ return;
+ if (*legacy_nid != NID_undef && *legacy_nid != nid) {
+ *legacy_nid = -1;
+ return;
+ }
+ *legacy_nid = nid;
+}
+#endif
+
+static void *evp_cipher_from_dispatch(const int name_id,
+ const OSSL_DISPATCH *fns,
+ OSSL_PROVIDER *prov,
+ void *unused)
+{
+ EVP_CIPHER *cipher = NULL;
+ int fnciphcnt = 0, fnctxcnt = 0;
+
+ if ((cipher = evp_cipher_new()) == NULL) {
+ EVPerr(0, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
+#ifndef FIPS_MODE
+ /* TODO(3.x) get rid of the need for legacy NIDs */
+ cipher->nid = NID_undef;
+ evp_doall_names(prov, name_id, set_legacy_nid, &cipher->nid);
+ if (cipher->nid == -1) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
+ EVP_CIPHER_free(cipher);
+ return NULL;
+ }
+#endif
+
+ cipher->name_id = name_id;
+
+ 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);
+ fnctxcnt++;
+ break;
+ case OSSL_FUNC_CIPHER_ENCRYPT_INIT:
+ if (cipher->einit != NULL)
+ break;
+ cipher->einit = OSSL_get_OP_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);
+ fnciphcnt++;
+ break;
+ case OSSL_FUNC_CIPHER_UPDATE:
+ if (cipher->cupdate != NULL)
+ break;
+ cipher->cupdate = OSSL_get_OP_cipher_update(fns);
+ fnciphcnt++;
+ break;
+ case OSSL_FUNC_CIPHER_FINAL:
+ if (cipher->cfinal != NULL)
+ break;
+ cipher->cfinal = OSSL_get_OP_cipher_final(fns);
+ fnciphcnt++;
+ break;
+ case OSSL_FUNC_CIPHER_CIPHER:
+ if (cipher->ccipher != NULL)
+ break;
+ cipher->ccipher = OSSL_get_OP_cipher_cipher(fns);
+ break;
+ case OSSL_FUNC_CIPHER_FREECTX:
+ if (cipher->freectx != NULL)
+ break;
+ cipher->freectx = OSSL_get_OP_cipher_freectx(fns);
+ fnctxcnt++;
+ break;
+ case OSSL_FUNC_CIPHER_DUPCTX:
+ if (cipher->dupctx != NULL)
+ break;
+ cipher->dupctx = OSSL_get_OP_cipher_dupctx(fns);
+ break;
+ case OSSL_FUNC_CIPHER_GET_PARAMS:
+ if (cipher->get_params != NULL)
+ break;
+ cipher->get_params = OSSL_get_OP_cipher_get_params(fns);
+ break;
+ case OSSL_FUNC_CIPHER_GET_CTX_PARAMS:
+ if (cipher->get_ctx_params != NULL)
+ break;
+ cipher->get_ctx_params = OSSL_get_OP_cipher_get_ctx_params(fns);
+ break;
+ case OSSL_FUNC_CIPHER_SET_CTX_PARAMS:
+ if (cipher->set_ctx_params != NULL)
+ break;
+ cipher->set_ctx_params = OSSL_get_OP_cipher_set_ctx_params(fns);
+ break;
+ case OSSL_FUNC_CIPHER_GETTABLE_PARAMS:
+ if (cipher->gettable_params != NULL)
+ break;
+ cipher->gettable_params = OSSL_get_OP_cipher_gettable_params(fns);
+ break;
+ case OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS:
+ if (cipher->gettable_ctx_params != NULL)
+ break;
+ cipher->gettable_ctx_params =
+ OSSL_get_OP_cipher_gettable_ctx_params(fns);
+ break;
+ case OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS:
+ if (cipher->settable_ctx_params != NULL)
+ break;
+ cipher->settable_ctx_params =
+ OSSL_get_OP_cipher_settable_ctx_params(fns);
+ break;
+ }
+ }
+ if ((fnciphcnt != 0 && fnciphcnt != 3 && fnciphcnt != 4)
+ || (fnciphcnt == 0 && cipher->ccipher == 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 both
+ * the "newctx" and "freectx" functions.
+ */
+ EVP_CIPHER_free(cipher);
+ EVPerr(EVP_F_EVP_CIPHER_FROM_DISPATCH, EVP_R_INVALID_PROVIDER_FUNCTIONS);
+ return NULL;
+ }
+ cipher->prov = prov;
+ if (prov != NULL)
+ ossl_provider_up_ref(prov);
+
+ return cipher;
+}
+
+static int evp_cipher_up_ref(void *cipher)
+{
+ return EVP_CIPHER_up_ref(cipher);
+}
+
+static void evp_cipher_free(void *cipher)
+{
+ EVP_CIPHER_free(cipher);
+}
+
+EVP_CIPHER *EVP_CIPHER_fetch(OPENSSL_CTX *ctx, const char *algorithm,
+ const char *properties)
+{
+ EVP_CIPHER *cipher =
+ evp_generic_fetch(ctx, OSSL_OP_CIPHER, algorithm, properties,
+ evp_cipher_from_dispatch, NULL, evp_cipher_up_ref,
+ evp_cipher_free);
+
+ return cipher;
+}
+
+int EVP_CIPHER_up_ref(EVP_CIPHER *cipher)
+{
+ int ref = 0;
+
+ CRYPTO_UP_REF(&cipher->refcnt, &ref, cipher->lock);
return 1;
}
+
+void EVP_CIPHER_free(EVP_CIPHER *cipher)
+{
+ int i;
+
+ if (cipher == NULL)
+ return;
+
+ CRYPTO_DOWN_REF(&cipher->refcnt, &i, cipher->lock);
+ if (i > 0)
+ return;
+ ossl_provider_free(cipher->prov);
+ CRYPTO_THREAD_lock_free(cipher->lock);
+ OPENSSL_free(cipher);
+}
+
+void EVP_CIPHER_do_all_ex(OPENSSL_CTX *libctx,
+ void (*fn)(EVP_CIPHER *mac, void *arg),
+ void *arg)
+{
+ evp_generic_do_all(libctx, OSSL_OP_CIPHER,
+ (void (*)(void *, void *))fn, arg,
+ evp_cipher_from_dispatch, NULL, evp_cipher_free);
+}
projects / openssl.git / blobdiff