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AppleM1: Update openssl to v1.1.1l

This commit is contained in:
winlin 2022-08-14 19:05:01 +08:00
parent 1fe12b8e8c
commit b787656eea
990 changed files with 13406 additions and 18710 deletions

View file

@ -2,3 +2,5 @@ LIBS=../../libcrypto
SOURCE[../../libcrypto]=\
randfile.c rand_lib.c rand_err.c rand_egd.c \
rand_win.c rand_unix.c rand_vms.c drbg_lib.c drbg_ctr.c
INCLUDE[drbg_ctr.o]=../modes

View file

@ -1,5 +1,5 @@
/*
* Copyright 2011-2018 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 2011-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@ -12,28 +12,25 @@
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/rand.h>
#include "modes_local.h"
#include "internal/thread_once.h"
#include "internal/thread_once.h"
#include "rand_lcl.h"
#include "rand_local.h"
/*
* Implementation of NIST SP 800-90A CTR DRBG.
*/
static void inc_128(RAND_DRBG_CTR *ctr)
{
int i;
unsigned char c;
unsigned char *p = &ctr->V[15];
unsigned char *p = &ctr->V[0];
u32 n = 16, c = 1;
for (i = 0; i < 16; i++, p--) {
c = *p;
c++;
*p = c;
if (c != 0) {
/* If we didn't wrap around, we're done. */
break;
}
}
do {
--n;
c += p[n];
p[n] = (u8)c;
c >>= 8;
} while (n);
}
static void ctr_XOR(RAND_DRBG_CTR *ctr, const unsigned char *in, size_t inlen)
@ -66,15 +63,15 @@ static void ctr_XOR(RAND_DRBG_CTR *ctr, const unsigned char *in, size_t inlen)
* Process a complete block using BCC algorithm of SP 800-90A 10.3.3
*/
__owur static int ctr_BCC_block(RAND_DRBG_CTR *ctr, unsigned char *out,
const unsigned char *in)
const unsigned char *in, int len)
{
int i, outlen = AES_BLOCK_SIZE;
for (i = 0; i < 16; i++)
for (i = 0; i < len; i++)
out[i] ^= in[i];
if (!EVP_CipherUpdate(ctr->ctx_df, out, &outlen, out, AES_BLOCK_SIZE)
|| outlen != AES_BLOCK_SIZE)
if (!EVP_CipherUpdate(ctr->ctx_df, out, &outlen, out, len)
|| outlen != len)
return 0;
return 1;
}
@ -85,12 +82,16 @@ __owur static int ctr_BCC_block(RAND_DRBG_CTR *ctr, unsigned char *out,
*/
__owur static int ctr_BCC_blocks(RAND_DRBG_CTR *ctr, const unsigned char *in)
{
if (!ctr_BCC_block(ctr, ctr->KX, in)
|| !ctr_BCC_block(ctr, ctr->KX + 16, in))
return 0;
if (ctr->keylen != 16 && !ctr_BCC_block(ctr, ctr->KX + 32, in))
return 0;
return 1;
unsigned char in_tmp[48];
unsigned char num_of_blk = 2;
memcpy(in_tmp, in, 16);
memcpy(in_tmp + 16, in, 16);
if (ctr->keylen != 16) {
memcpy(in_tmp + 32, in, 16);
num_of_blk = 3;
}
return ctr_BCC_block(ctr, ctr->KX, in_tmp, AES_BLOCK_SIZE * num_of_blk);
}
/*
@ -99,19 +100,14 @@ __owur static int ctr_BCC_blocks(RAND_DRBG_CTR *ctr, const unsigned char *in)
*/
__owur static int ctr_BCC_init(RAND_DRBG_CTR *ctr)
{
unsigned char bltmp[48] = {0};
unsigned char num_of_blk;
memset(ctr->KX, 0, 48);
memset(ctr->bltmp, 0, 16);
if (!ctr_BCC_block(ctr, ctr->KX, ctr->bltmp))
return 0;
ctr->bltmp[3] = 1;
if (!ctr_BCC_block(ctr, ctr->KX + 16, ctr->bltmp))
return 0;
if (ctr->keylen != 16) {
ctr->bltmp[3] = 2;
if (!ctr_BCC_block(ctr, ctr->KX + 32, ctr->bltmp))
return 0;
}
return 1;
num_of_blk = ctr->keylen == 16 ? 2 : 3;
bltmp[(AES_BLOCK_SIZE * 1) + 3] = 1;
bltmp[(AES_BLOCK_SIZE * 2) + 3] = 2;
return ctr_BCC_block(ctr, ctr->KX, bltmp, num_of_blk * AES_BLOCK_SIZE);
}
/*
@ -200,20 +196,20 @@ __owur static int ctr_df(RAND_DRBG_CTR *ctr,
|| !ctr_BCC_final(ctr))
return 0;
/* Set up key K */
if (!EVP_CipherInit_ex(ctr->ctx, ctr->cipher, NULL, ctr->KX, NULL, 1))
if (!EVP_CipherInit_ex(ctr->ctx_ecb, NULL, NULL, ctr->KX, NULL, -1))
return 0;
/* X follows key K */
if (!EVP_CipherUpdate(ctr->ctx, ctr->KX, &outlen, ctr->KX + ctr->keylen,
if (!EVP_CipherUpdate(ctr->ctx_ecb, ctr->KX, &outlen, ctr->KX + ctr->keylen,
AES_BLOCK_SIZE)
|| outlen != AES_BLOCK_SIZE)
return 0;
if (!EVP_CipherUpdate(ctr->ctx, ctr->KX + 16, &outlen, ctr->KX,
if (!EVP_CipherUpdate(ctr->ctx_ecb, ctr->KX + 16, &outlen, ctr->KX,
AES_BLOCK_SIZE)
|| outlen != AES_BLOCK_SIZE)
return 0;
if (ctr->keylen != 16)
if (!EVP_CipherUpdate(ctr->ctx, ctr->KX + 32, &outlen, ctr->KX + 16,
AES_BLOCK_SIZE)
if (!EVP_CipherUpdate(ctr->ctx_ecb, ctr->KX + 32, &outlen,
ctr->KX + 16, AES_BLOCK_SIZE)
|| outlen != AES_BLOCK_SIZE)
return 0;
return 1;
@ -232,31 +228,25 @@ __owur static int ctr_update(RAND_DRBG *drbg,
{
RAND_DRBG_CTR *ctr = &drbg->data.ctr;
int outlen = AES_BLOCK_SIZE;
unsigned char V_tmp[48], out[48];
unsigned char len;
/* correct key is already set up. */
memcpy(V_tmp, ctr->V, 16);
inc_128(ctr);
if (!EVP_CipherUpdate(ctr->ctx, ctr->K, &outlen, ctr->V, AES_BLOCK_SIZE)
|| outlen != AES_BLOCK_SIZE)
return 0;
/* If keylen longer than 128 bits need extra encrypt */
if (ctr->keylen != 16) {
memcpy(V_tmp + 16, ctr->V, 16);
if (ctr->keylen == 16) {
len = 32;
} else {
inc_128(ctr);
if (!EVP_CipherUpdate(ctr->ctx, ctr->K+16, &outlen, ctr->V,
AES_BLOCK_SIZE)
|| outlen != AES_BLOCK_SIZE)
return 0;
memcpy(V_tmp + 32, ctr->V, 16);
len = 48;
}
inc_128(ctr);
if (!EVP_CipherUpdate(ctr->ctx, ctr->V, &outlen, ctr->V, AES_BLOCK_SIZE)
|| outlen != AES_BLOCK_SIZE)
if (!EVP_CipherUpdate(ctr->ctx_ecb, out, &outlen, V_tmp, len)
|| outlen != len)
return 0;
/* If 192 bit key part of V is on end of K */
if (ctr->keylen == 24) {
memcpy(ctr->V + 8, ctr->V, 8);
memcpy(ctr->V, ctr->K + 24, 8);
}
memcpy(ctr->K, out, ctr->keylen);
memcpy(ctr->V, out + ctr->keylen, 16);
if ((drbg->flags & RAND_DRBG_FLAG_CTR_NO_DF) == 0) {
/* If no input reuse existing derived value */
@ -271,7 +261,8 @@ __owur static int ctr_update(RAND_DRBG *drbg,
ctr_XOR(ctr, in2, in2len);
}
if (!EVP_CipherInit_ex(ctr->ctx, ctr->cipher, NULL, ctr->K, NULL, 1))
if (!EVP_CipherInit_ex(ctr->ctx_ecb, NULL, NULL, ctr->K, NULL, -1)
|| !EVP_CipherInit_ex(ctr->ctx_ctr, NULL, NULL, ctr->K, NULL, -1))
return 0;
return 1;
}
@ -288,8 +279,10 @@ __owur static int drbg_ctr_instantiate(RAND_DRBG *drbg,
memset(ctr->K, 0, sizeof(ctr->K));
memset(ctr->V, 0, sizeof(ctr->V));
if (!EVP_CipherInit_ex(ctr->ctx, ctr->cipher, NULL, ctr->K, NULL, 1))
if (!EVP_CipherInit_ex(ctr->ctx_ecb, NULL, NULL, ctr->K, NULL, -1))
return 0;
inc_128(ctr);
if (!ctr_update(drbg, entropy, entropylen, pers, perslen, nonce, noncelen))
return 0;
return 1;
@ -299,20 +292,40 @@ __owur static int drbg_ctr_reseed(RAND_DRBG *drbg,
const unsigned char *entropy, size_t entropylen,
const unsigned char *adin, size_t adinlen)
{
RAND_DRBG_CTR *ctr = &drbg->data.ctr;
if (entropy == NULL)
return 0;
inc_128(ctr);
if (!ctr_update(drbg, entropy, entropylen, adin, adinlen, NULL, 0))
return 0;
return 1;
}
static void ctr96_inc(unsigned char *counter)
{
u32 n = 12, c = 1;
do {
--n;
c += counter[n];
counter[n] = (u8)c;
c >>= 8;
} while (n);
}
__owur static int drbg_ctr_generate(RAND_DRBG *drbg,
unsigned char *out, size_t outlen,
const unsigned char *adin, size_t adinlen)
{
RAND_DRBG_CTR *ctr = &drbg->data.ctr;
unsigned int ctr32, blocks;
int outl, buflen;
if (adin != NULL && adinlen != 0) {
inc_128(ctr);
if (!ctr_update(drbg, adin, adinlen, NULL, 0, NULL, 0))
return 0;
/* This means we reuse derived value */
@ -324,28 +337,53 @@ __owur static int drbg_ctr_generate(RAND_DRBG *drbg,
adinlen = 0;
}
for ( ; ; ) {
int outl = AES_BLOCK_SIZE;
inc_128(ctr);
if (outlen == 0) {
inc_128(ctr);
if (outlen < 16) {
/* Use K as temp space as it will be updated */
if (!EVP_CipherUpdate(ctr->ctx, ctr->K, &outl, ctr->V,
AES_BLOCK_SIZE)
|| outl != AES_BLOCK_SIZE)
return 0;
memcpy(out, ctr->K, outlen);
break;
}
if (!EVP_CipherUpdate(ctr->ctx, out, &outl, ctr->V, AES_BLOCK_SIZE)
|| outl != AES_BLOCK_SIZE)
if (!ctr_update(drbg, adin, adinlen, NULL, 0, NULL, 0))
return 0;
out += 16;
outlen -= 16;
if (outlen == 0)
break;
return 1;
}
memset(out, 0, outlen);
do {
if (!EVP_CipherInit_ex(ctr->ctx_ctr,
NULL, NULL, NULL, ctr->V, -1))
return 0;
/*-
* outlen has type size_t while EVP_CipherUpdate takes an
* int argument and thus cannot be guaranteed to process more
* than 2^31-1 bytes at a time. We process such huge generate
* requests in 2^30 byte chunks, which is the greatest multiple
* of AES block size lower than or equal to 2^31-1.
*/
buflen = outlen > (1U << 30) ? (1U << 30) : outlen;
blocks = (buflen + 15) / 16;
ctr32 = GETU32(ctr->V + 12) + blocks;
if (ctr32 < blocks) {
/* 32-bit counter overflow into V. */
if (ctr32 != 0) {
blocks -= ctr32;
buflen = blocks * 16;
ctr32 = 0;
}
ctr96_inc(ctr->V);
}
PUTU32(ctr->V + 12, ctr32);
if (!EVP_CipherUpdate(ctr->ctx_ctr, out, &outl, out, buflen)
|| outl != buflen)
return 0;
out += buflen;
outlen -= buflen;
} while (outlen);
if (!ctr_update(drbg, adin, adinlen, NULL, 0, NULL, 0))
return 0;
return 1;
@ -353,7 +391,8 @@ __owur static int drbg_ctr_generate(RAND_DRBG *drbg,
static int drbg_ctr_uninstantiate(RAND_DRBG *drbg)
{
EVP_CIPHER_CTX_free(drbg->data.ctr.ctx);
EVP_CIPHER_CTX_free(drbg->data.ctr.ctx_ecb);
EVP_CIPHER_CTX_free(drbg->data.ctr.ctx_ctr);
EVP_CIPHER_CTX_free(drbg->data.ctr.ctx_df);
OPENSSL_cleanse(&drbg->data.ctr, sizeof(drbg->data.ctr));
return 1;
@ -377,25 +416,36 @@ int drbg_ctr_init(RAND_DRBG *drbg)
return 0;
case NID_aes_128_ctr:
keylen = 16;
ctr->cipher = EVP_aes_128_ecb();
ctr->cipher_ecb = EVP_aes_128_ecb();
ctr->cipher_ctr = EVP_aes_128_ctr();
break;
case NID_aes_192_ctr:
keylen = 24;
ctr->cipher = EVP_aes_192_ecb();
ctr->cipher_ecb = EVP_aes_192_ecb();
ctr->cipher_ctr = EVP_aes_192_ctr();
break;
case NID_aes_256_ctr:
keylen = 32;
ctr->cipher = EVP_aes_256_ecb();
ctr->cipher_ecb = EVP_aes_256_ecb();
ctr->cipher_ctr = EVP_aes_256_ctr();
break;
}
drbg->meth = &drbg_ctr_meth;
ctr->keylen = keylen;
if (ctr->ctx == NULL)
ctr->ctx = EVP_CIPHER_CTX_new();
if (ctr->ctx == NULL)
if (ctr->ctx_ecb == NULL)
ctr->ctx_ecb = EVP_CIPHER_CTX_new();
if (ctr->ctx_ctr == NULL)
ctr->ctx_ctr = EVP_CIPHER_CTX_new();
if (ctr->ctx_ecb == NULL || ctr->ctx_ctr == NULL
|| !EVP_CipherInit_ex(ctr->ctx_ecb,
ctr->cipher_ecb, NULL, NULL, NULL, 1)
|| !EVP_CipherInit_ex(ctr->ctx_ctr,
ctr->cipher_ctr, NULL, NULL, NULL, 1))
return 0;
drbg->meth = &drbg_ctr_meth;
drbg->strength = keylen * 8;
drbg->seedlen = keylen + 16;
@ -413,7 +463,8 @@ int drbg_ctr_init(RAND_DRBG *drbg)
if (ctr->ctx_df == NULL)
return 0;
/* Set key schedule for df_key */
if (!EVP_CipherInit_ex(ctr->ctx_df, ctr->cipher, NULL, df_key, NULL, 1))
if (!EVP_CipherInit_ex(ctr->ctx_df,
ctr->cipher_ecb, NULL, df_key, NULL, 1))
return 0;
drbg->min_entropylen = ctr->keylen;

View file

@ -1,5 +1,5 @@
/*
* Copyright 2011-2018 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 2011-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@ -11,10 +11,10 @@
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/rand.h>
#include "rand_lcl.h"
#include "rand_local.h"
#include "internal/thread_once.h"
#include "internal/rand_int.h"
#include "internal/cryptlib_int.h"
#include "crypto/rand.h"
#include "crypto/cryptlib.h"
/*
* Support framework for NIST SP 800-90A DRBG
@ -188,8 +188,8 @@ static RAND_DRBG *rand_drbg_new(int secure,
unsigned int flags,
RAND_DRBG *parent)
{
RAND_DRBG *drbg = secure ?
OPENSSL_secure_zalloc(sizeof(*drbg)) : OPENSSL_zalloc(sizeof(*drbg));
RAND_DRBG *drbg = secure ? OPENSSL_secure_zalloc(sizeof(*drbg))
: OPENSSL_zalloc(sizeof(*drbg));
if (drbg == NULL) {
RANDerr(RAND_F_RAND_DRBG_NEW, ERR_R_MALLOC_FAILURE);
@ -197,7 +197,7 @@ static RAND_DRBG *rand_drbg_new(int secure,
}
drbg->secure = secure && CRYPTO_secure_allocated(drbg);
drbg->fork_count = rand_fork_count;
drbg->fork_id = openssl_get_fork_id();
drbg->parent = parent;
if (parent == NULL) {
@ -318,7 +318,7 @@ int RAND_DRBG_instantiate(RAND_DRBG *drbg,
/*
* NIST SP800-90Ar1 section 9.1 says you can combine getting the entropy
* and nonce in 1 call by increasing the entropy with 50% and increasing
* the minimum length to accomadate the length of the nonce.
* the minimum length to accommodate the length of the nonce.
* We do this in case a nonce is require and get_nonce is NULL.
*/
if (drbg->min_noncelen > 0 && drbg->get_nonce == NULL) {
@ -327,13 +327,6 @@ int RAND_DRBG_instantiate(RAND_DRBG *drbg,
max_entropylen += drbg->max_noncelen;
}
drbg->reseed_next_counter = tsan_load(&drbg->reseed_prop_counter);
if (drbg->reseed_next_counter) {
drbg->reseed_next_counter++;
if(!drbg->reseed_next_counter)
drbg->reseed_next_counter = 1;
}
if (drbg->get_entropy != NULL)
entropylen = drbg->get_entropy(drbg, &entropy, min_entropy,
min_entropylen, max_entropylen, 0);
@ -359,9 +352,15 @@ int RAND_DRBG_instantiate(RAND_DRBG *drbg,
}
drbg->state = DRBG_READY;
drbg->reseed_gen_counter = 1;
drbg->generate_counter = 1;
drbg->reseed_time = time(NULL);
tsan_store(&drbg->reseed_prop_counter, drbg->reseed_next_counter);
if (drbg->enable_reseed_propagation) {
if (drbg->parent == NULL)
tsan_counter(&drbg->reseed_counter);
else
tsan_store(&drbg->reseed_counter,
tsan_load(&drbg->parent->reseed_counter));
}
end:
if (entropy != NULL && drbg->cleanup_entropy != NULL)
@ -428,14 +427,6 @@ int RAND_DRBG_reseed(RAND_DRBG *drbg,
}
drbg->state = DRBG_ERROR;
drbg->reseed_next_counter = tsan_load(&drbg->reseed_prop_counter);
if (drbg->reseed_next_counter) {
drbg->reseed_next_counter++;
if(!drbg->reseed_next_counter)
drbg->reseed_next_counter = 1;
}
if (drbg->get_entropy != NULL)
entropylen = drbg->get_entropy(drbg, &entropy, drbg->strength,
drbg->min_entropylen,
@ -451,9 +442,15 @@ int RAND_DRBG_reseed(RAND_DRBG *drbg,
goto end;
drbg->state = DRBG_READY;
drbg->reseed_gen_counter = 1;
drbg->generate_counter = 1;
drbg->reseed_time = time(NULL);
tsan_store(&drbg->reseed_prop_counter, drbg->reseed_next_counter);
if (drbg->enable_reseed_propagation) {
if (drbg->parent == NULL)
tsan_counter(&drbg->reseed_counter);
else
tsan_store(&drbg->reseed_counter,
tsan_load(&drbg->parent->reseed_counter));
}
end:
if (entropy != NULL && drbg->cleanup_entropy != NULL)
@ -554,7 +551,9 @@ int rand_drbg_restart(RAND_DRBG *drbg,
drbg->meth->reseed(drbg, adin, adinlen, NULL, 0);
} else if (reseeded == 0) {
/* do a full reseeding if it has not been done yet above */
RAND_DRBG_reseed(drbg, NULL, 0, 0);
if (!RAND_DRBG_reseed(drbg, NULL, 0, 0)) {
RANDerr(RAND_F_RAND_DRBG_RESTART, RAND_R_RESEED_ERROR);
}
}
}
@ -578,6 +577,7 @@ int RAND_DRBG_generate(RAND_DRBG *drbg, unsigned char *out, size_t outlen,
int prediction_resistance,
const unsigned char *adin, size_t adinlen)
{
int fork_id;
int reseed_required = 0;
if (drbg->state != DRBG_READY) {
@ -603,13 +603,15 @@ int RAND_DRBG_generate(RAND_DRBG *drbg, unsigned char *out, size_t outlen,
return 0;
}
if (drbg->fork_count != rand_fork_count) {
drbg->fork_count = rand_fork_count;
fork_id = openssl_get_fork_id();
if (drbg->fork_id != fork_id) {
drbg->fork_id = fork_id;
reseed_required = 1;
}
if (drbg->reseed_interval > 0) {
if (drbg->reseed_gen_counter >= drbg->reseed_interval)
if (drbg->generate_counter >= drbg->reseed_interval)
reseed_required = 1;
}
if (drbg->reseed_time_interval > 0) {
@ -618,11 +620,8 @@ int RAND_DRBG_generate(RAND_DRBG *drbg, unsigned char *out, size_t outlen,
|| now - drbg->reseed_time >= drbg->reseed_time_interval)
reseed_required = 1;
}
if (drbg->parent != NULL) {
unsigned int reseed_counter = tsan_load(&drbg->reseed_prop_counter);
if (reseed_counter > 0
&& tsan_load(&drbg->parent->reseed_prop_counter)
!= reseed_counter)
if (drbg->enable_reseed_propagation && drbg->parent != NULL) {
if (drbg->reseed_counter != tsan_load(&drbg->parent->reseed_counter))
reseed_required = 1;
}
@ -641,7 +640,7 @@ int RAND_DRBG_generate(RAND_DRBG *drbg, unsigned char *out, size_t outlen,
return 0;
}
drbg->reseed_gen_counter++;
drbg->generate_counter++;
return 1;
}
@ -664,7 +663,7 @@ int RAND_DRBG_bytes(RAND_DRBG *drbg, unsigned char *out, size_t outlen)
if (drbg->adin_pool == NULL) {
if (drbg->type == 0)
goto err;
drbg->adin_pool = rand_pool_new(0, 0, drbg->max_adinlen);
drbg->adin_pool = rand_pool_new(0, 0, 0, drbg->max_adinlen);
if (drbg->adin_pool == NULL)
goto err;
}
@ -703,8 +702,7 @@ int RAND_DRBG_set_callbacks(RAND_DRBG *drbg,
RAND_DRBG_get_nonce_fn get_nonce,
RAND_DRBG_cleanup_nonce_fn cleanup_nonce)
{
if (drbg->state != DRBG_UNINITIALISED
|| drbg->parent != NULL)
if (drbg->state != DRBG_UNINITIALISED)
return 0;
drbg->get_entropy = get_entropy;
drbg->cleanup_entropy = cleanup_entropy;
@ -880,8 +878,9 @@ static RAND_DRBG *drbg_setup(RAND_DRBG *parent)
if (parent == NULL && rand_drbg_enable_locking(drbg) == 0)
goto err;
/* enable seed propagation */
tsan_store(&drbg->reseed_prop_counter, 1);
/* enable reseed propagation */
drbg->enable_reseed_propagation = 1;
drbg->reseed_counter = 1;
/*
* Ignore instantiation error to support just-in-time instantiation.
@ -1041,7 +1040,7 @@ static int drbg_add(const void *buf, int num, double randomness)
return ret;
#else
/*
* If an os entropy source is avaible then we declare the buffer content
* If an os entropy source is available then we declare the buffer content
* as additional data by setting randomness to zero and trigger a regular
* reseeding.
*/

View file

@ -1,6 +1,6 @@
/*
* Generated by util/mkerr.pl DO NOT EDIT
* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@ -14,6 +14,8 @@
#ifndef OPENSSL_NO_ERR
static const ERR_STRING_DATA RAND_str_functs[] = {
{ERR_PACK(ERR_LIB_RAND, RAND_F_DATA_COLLECT_METHOD, 0),
"data_collect_method"},
{ERR_PACK(ERR_LIB_RAND, RAND_F_DRBG_BYTES, 0), "drbg_bytes"},
{ERR_PACK(ERR_LIB_RAND, RAND_F_DRBG_GET_ENTROPY, 0), "drbg_get_entropy"},
{ERR_PACK(ERR_LIB_RAND, RAND_F_DRBG_SETUP, 0), "drbg_setup"},
@ -47,7 +49,9 @@ static const ERR_STRING_DATA RAND_str_functs[] = {
{ERR_PACK(ERR_LIB_RAND, RAND_F_RAND_POOL_ATTACH, 0), "rand_pool_attach"},
{ERR_PACK(ERR_LIB_RAND, RAND_F_RAND_POOL_BYTES_NEEDED, 0),
"rand_pool_bytes_needed"},
{ERR_PACK(ERR_LIB_RAND, RAND_F_RAND_POOL_GROW, 0), "rand_pool_grow"},
{ERR_PACK(ERR_LIB_RAND, RAND_F_RAND_POOL_NEW, 0), "rand_pool_new"},
{ERR_PACK(ERR_LIB_RAND, RAND_F_RAND_PSEUDO_BYTES, 0), "RAND_pseudo_bytes"},
{ERR_PACK(ERR_LIB_RAND, RAND_F_RAND_WRITE_FILE, 0), "RAND_write_file"},
{0, NULL}
};

View file

@ -1,5 +1,5 @@
/*
* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@ -11,10 +11,10 @@
#include <time.h>
#include "internal/cryptlib.h"
#include <openssl/opensslconf.h>
#include "internal/rand_int.h"
#include "crypto/rand.h"
#include <openssl/engine.h>
#include "internal/thread_once.h"
#include "rand_lcl.h"
#include "rand_local.h"
#include "e_os.h"
#ifndef OPENSSL_NO_ENGINE
@ -26,8 +26,6 @@ static CRYPTO_RWLOCK *rand_meth_lock;
static const RAND_METHOD *default_RAND_meth;
static CRYPTO_ONCE rand_init = CRYPTO_ONCE_STATIC_INIT;
int rand_fork_count;
static CRYPTO_RWLOCK *rand_nonce_lock;
static int rand_nonce_count;
@ -137,7 +135,7 @@ size_t rand_drbg_get_entropy(RAND_DRBG *drbg,
size_t entropy_available = 0;
RAND_POOL *pool;
if (drbg->parent && drbg->strength > drbg->parent->strength) {
if (drbg->parent != NULL && drbg->strength > drbg->parent->strength) {
/*
* We currently don't support the algorithm from NIST SP 800-90C
* 10.1.2 to use a weaker DRBG as source
@ -150,12 +148,12 @@ size_t rand_drbg_get_entropy(RAND_DRBG *drbg,
pool = drbg->seed_pool;
pool->entropy_requested = entropy;
} else {
pool = rand_pool_new(entropy, min_len, max_len);
pool = rand_pool_new(entropy, drbg->secure, min_len, max_len);
if (pool == NULL)
return 0;
}
if (drbg->parent) {
if (drbg->parent != NULL) {
size_t bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
unsigned char *buffer = rand_pool_add_begin(pool, bytes_needed);
@ -163,7 +161,9 @@ size_t rand_drbg_get_entropy(RAND_DRBG *drbg,
size_t bytes = 0;
/*
* Get random from parent, include our state as additional input.
* Get random data from parent. Include our address as additional input,
* in order to provide some additional distinction between different
* DRBG child instances.
* Our lock is already held, but we need to lock our parent before
* generating bits from it. (Note: taking the lock will be a no-op
* if locking if drbg->parent->lock == NULL.)
@ -172,10 +172,8 @@ size_t rand_drbg_get_entropy(RAND_DRBG *drbg,
if (RAND_DRBG_generate(drbg->parent,
buffer, bytes_needed,
prediction_resistance,
NULL, 0) != 0)
(unsigned char *)&drbg, sizeof(drbg)) != 0)
bytes = bytes_needed;
drbg->reseed_next_counter
= tsan_load(&drbg->parent->reseed_prop_counter);
rand_drbg_unlock(drbg->parent);
rand_pool_add_end(pool, bytes, 8 * bytes);
@ -216,8 +214,12 @@ size_t rand_drbg_get_entropy(RAND_DRBG *drbg,
void rand_drbg_cleanup_entropy(RAND_DRBG *drbg,
unsigned char *out, size_t outlen)
{
if (drbg->seed_pool == NULL)
OPENSSL_secure_clear_free(out, outlen);
if (drbg->seed_pool == NULL) {
if (drbg->secure)
OPENSSL_secure_clear_free(out, outlen);
else
OPENSSL_clear_free(out, outlen);
}
}
@ -235,9 +237,10 @@ size_t rand_drbg_get_nonce(RAND_DRBG *drbg,
struct {
void * instance;
int count;
} data = { 0 };
} data;
pool = rand_pool_new(0, min_len, max_len);
memset(&data, 0, sizeof(data));
pool = rand_pool_new(0, 0, min_len, max_len);
if (pool == NULL)
return 0;
@ -266,7 +269,7 @@ size_t rand_drbg_get_nonce(RAND_DRBG *drbg,
void rand_drbg_cleanup_nonce(RAND_DRBG *drbg,
unsigned char *out, size_t outlen)
{
OPENSSL_secure_clear_free(out, outlen);
OPENSSL_clear_free(out, outlen);
}
/*
@ -298,11 +301,6 @@ void rand_drbg_cleanup_additional_data(RAND_POOL *pool, unsigned char *out)
rand_pool_reattach(pool, out);
}
void rand_fork(void)
{
rand_fork_count++;
}
DEFINE_RUN_ONCE_STATIC(do_rand_init)
{
#ifndef OPENSSL_NO_ENGINE
@ -362,7 +360,7 @@ void rand_cleanup_int(void)
}
/*
* RAND_close_seed_files() ensures that any seed file decriptors are
* RAND_close_seed_files() ensures that any seed file descriptors are
* closed after use.
*/
void RAND_keep_random_devices_open(int keep)
@ -386,6 +384,9 @@ int RAND_poll(void)
const RAND_METHOD *meth = RAND_get_rand_method();
if (meth == NULL)
return 0;
if (meth == RAND_OpenSSL()) {
/* fill random pool and seed the master DRBG */
RAND_DRBG *drbg = RAND_DRBG_get0_master();
@ -401,8 +402,8 @@ int RAND_poll(void)
} else {
/* fill random pool and seed the current legacy RNG */
pool = rand_pool_new(RAND_DRBG_STRENGTH,
RAND_DRBG_STRENGTH / 8,
pool = rand_pool_new(RAND_DRBG_STRENGTH, 1,
(RAND_DRBG_STRENGTH + 7) / 8,
RAND_POOL_MAX_LENGTH);
if (pool == NULL)
return 0;
@ -428,10 +429,16 @@ err:
* Allocate memory and initialize a new random pool
*/
RAND_POOL *rand_pool_new(int entropy_requested, size_t min_len, size_t max_len)
RAND_POOL *rand_pool_new(int entropy_requested, int secure,
size_t min_len, size_t max_len)
{
RAND_POOL *pool = OPENSSL_zalloc(sizeof(*pool));
RAND_POOL *pool;
size_t min_alloc_size = RAND_POOL_MIN_ALLOCATION(secure);
if (!RUN_ONCE(&rand_init, do_rand_init))
return NULL;
pool = OPENSSL_zalloc(sizeof(*pool));
if (pool == NULL) {
RANDerr(RAND_F_RAND_POOL_NEW, ERR_R_MALLOC_FAILURE);
return NULL;
@ -440,14 +447,22 @@ RAND_POOL *rand_pool_new(int entropy_requested, size_t min_len, size_t max_len)
pool->min_len = min_len;
pool->max_len = (max_len > RAND_POOL_MAX_LENGTH) ?
RAND_POOL_MAX_LENGTH : max_len;
pool->alloc_len = min_len < min_alloc_size ? min_alloc_size : min_len;
if (pool->alloc_len > pool->max_len)
pool->alloc_len = pool->max_len;
if (secure)
pool->buffer = OPENSSL_secure_zalloc(pool->alloc_len);
else
pool->buffer = OPENSSL_zalloc(pool->alloc_len);
pool->buffer = OPENSSL_secure_zalloc(pool->max_len);
if (pool->buffer == NULL) {
RANDerr(RAND_F_RAND_POOL_NEW, ERR_R_MALLOC_FAILURE);
goto err;
}
pool->entropy_requested = entropy_requested;
pool->secure = secure;
return pool;
@ -482,7 +497,7 @@ RAND_POOL *rand_pool_attach(const unsigned char *buffer, size_t len,
pool->attached = 1;
pool->min_len = pool->max_len = pool->len;
pool->min_len = pool->max_len = pool->alloc_len = pool->len;
pool->entropy = entropy;
return pool;
@ -502,8 +517,13 @@ void rand_pool_free(RAND_POOL *pool)
* to rand_pool_attach() as `const unsigned char*`.
* (see corresponding comment in rand_pool_attach()).
*/
if (!pool->attached)
OPENSSL_secure_clear_free(pool->buffer, pool->max_len);
if (!pool->attached) {
if (pool->secure)
OPENSSL_secure_clear_free(pool->buffer, pool->alloc_len);
else
OPENSSL_clear_free(pool->buffer, pool->alloc_len);
}
OPENSSL_free(pool);
}
@ -596,6 +616,42 @@ size_t rand_pool_entropy_needed(RAND_POOL *pool)
return 0;
}
/* Increase the allocation size -- not usable for an attached pool */
static int rand_pool_grow(RAND_POOL *pool, size_t len)
{
if (len > pool->alloc_len - pool->len) {
unsigned char *p;
const size_t limit = pool->max_len / 2;
size_t newlen = pool->alloc_len;
if (pool->attached || len > pool->max_len - pool->len) {
RANDerr(RAND_F_RAND_POOL_GROW, ERR_R_INTERNAL_ERROR);
return 0;
}
do
newlen = newlen < limit ? newlen * 2 : pool->max_len;
while (len > newlen - pool->len);
if (pool->secure)
p = OPENSSL_secure_zalloc(newlen);
else
p = OPENSSL_zalloc(newlen);
if (p == NULL) {
RANDerr(RAND_F_RAND_POOL_GROW, ERR_R_MALLOC_FAILURE);
return 0;
}
memcpy(p, pool->buffer, pool->len);
if (pool->secure)
OPENSSL_secure_clear_free(pool->buffer, pool->alloc_len);
else
OPENSSL_clear_free(pool->buffer, pool->alloc_len);
pool->buffer = p;
pool->alloc_len = newlen;
}
return 1;
}
/*
* Returns the number of bytes needed to fill the pool, assuming
* the input has 1 / |entropy_factor| entropy bits per data bit.
@ -625,6 +681,24 @@ size_t rand_pool_bytes_needed(RAND_POOL *pool, unsigned int entropy_factor)
/* to meet the min_len requirement */
bytes_needed = pool->min_len - pool->len;
/*
* Make sure the buffer is large enough for the requested amount
* of data. This guarantees that existing code patterns where
* rand_pool_add_begin, rand_pool_add_end or rand_pool_add
* are used to collect entropy data without any error handling
* whatsoever, continue to be valid.
* Furthermore if the allocation here fails once, make sure that
* we don't fall back to a less secure or even blocking random source,
* as that could happen by the existing code patterns.
* This is not a concern for additional data, therefore that
* is not needed if rand_pool_grow fails in other places.
*/
if (!rand_pool_grow(pool, bytes_needed)) {
/* persistent error for this pool */
pool->max_len = pool->len = 0;
return 0;
}
return bytes_needed;
}
@ -657,6 +731,27 @@ int rand_pool_add(RAND_POOL *pool,
}
if (len > 0) {
/*
* This is to protect us from accidentally passing the buffer
* returned from rand_pool_add_begin.
* The check for alloc_len makes sure we do not compare the
* address of the end of the allocated memory to something
* different, since that comparison would have an
* indeterminate result.
*/
if (pool->alloc_len > pool->len && pool->buffer + pool->len == buffer) {
RANDerr(RAND_F_RAND_POOL_ADD, ERR_R_INTERNAL_ERROR);
return 0;
}
/*
* We have that only for cases when a pool is used to collect
* additional data.
* For entropy data, as long as the allocation request stays within
* the limits given by rand_pool_bytes_needed this rand_pool_grow
* below is guaranteed to succeed, thus no allocation happens.
*/
if (!rand_pool_grow(pool, len))
return 0;
memcpy(pool->buffer + pool->len, buffer, len);
pool->len += len;
pool->entropy += entropy;
@ -675,7 +770,7 @@ int rand_pool_add(RAND_POOL *pool,
* is returned without producing an error message.
*
* After updating the buffer, rand_pool_add_end() needs to be called
* to finish the udpate operation (see next comment).
* to finish the update operation (see next comment).
*/
unsigned char *rand_pool_add_begin(RAND_POOL *pool, size_t len)
{
@ -689,9 +784,21 @@ unsigned char *rand_pool_add_begin(RAND_POOL *pool, size_t len)
if (pool->buffer == NULL) {
RANDerr(RAND_F_RAND_POOL_ADD_BEGIN, ERR_R_INTERNAL_ERROR);
return 0;
return NULL;
}
/*
* As long as the allocation request stays within the limits given
* by rand_pool_bytes_needed this rand_pool_grow below is guaranteed
* to succeed, thus no allocation happens.
* We have that only for cases when a pool is used to collect
* additional data. Then the buffer might need to grow here,
* and of course the caller is responsible to check the return
* value of this function.
*/
if (!rand_pool_grow(pool, len))
return NULL;
return pool->buffer + pool->len;
}
@ -706,7 +813,7 @@ unsigned char *rand_pool_add_begin(RAND_POOL *pool, size_t len)
*/
int rand_pool_add_end(RAND_POOL *pool, size_t len, size_t entropy)
{
if (len > pool->max_len - pool->len) {
if (len > pool->alloc_len - pool->len) {
RANDerr(RAND_F_RAND_POOL_ADD_END, RAND_R_RANDOM_POOL_OVERFLOW);
return 0;
}
@ -794,7 +901,7 @@ void RAND_seed(const void *buf, int num)
{
const RAND_METHOD *meth = RAND_get_rand_method();
if (meth->seed != NULL)
if (meth != NULL && meth->seed != NULL)
meth->seed(buf, num);
}
@ -802,7 +909,7 @@ void RAND_add(const void *buf, int num, double randomness)
{
const RAND_METHOD *meth = RAND_get_rand_method();
if (meth->add != NULL)
if (meth != NULL && meth->add != NULL)
meth->add(buf, num, randomness);
}
@ -815,24 +922,22 @@ int RAND_priv_bytes(unsigned char *buf, int num)
{
const RAND_METHOD *meth = RAND_get_rand_method();
RAND_DRBG *drbg;
int ret;
if (meth != RAND_OpenSSL())
if (meth != NULL && meth != RAND_OpenSSL())
return RAND_bytes(buf, num);
drbg = RAND_DRBG_get0_private();
if (drbg == NULL)
return 0;
if (drbg != NULL)
return RAND_DRBG_bytes(drbg, buf, num);
ret = RAND_DRBG_bytes(drbg, buf, num);
return ret;
return 0;
}
int RAND_bytes(unsigned char *buf, int num)
{
const RAND_METHOD *meth = RAND_get_rand_method();
if (meth->bytes != NULL)
if (meth != NULL && meth->bytes != NULL)
return meth->bytes(buf, num);
RANDerr(RAND_F_RAND_BYTES, RAND_R_FUNC_NOT_IMPLEMENTED);
return -1;
@ -843,8 +948,9 @@ int RAND_pseudo_bytes(unsigned char *buf, int num)
{
const RAND_METHOD *meth = RAND_get_rand_method();
if (meth->pseudorand != NULL)
if (meth != NULL && meth->pseudorand != NULL)
return meth->pseudorand(buf, num);
RANDerr(RAND_F_RAND_PSEUDO_BYTES, RAND_R_FUNC_NOT_IMPLEMENTED);
return -1;
}
#endif
@ -853,7 +959,7 @@ int RAND_status(void)
{
const RAND_METHOD *meth = RAND_get_rand_method();
if (meth->status != NULL)
if (meth != NULL && meth->status != NULL)
return meth->status();
return 0;
}

View file

@ -1,5 +1,5 @@
/*
* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@ -7,8 +7,8 @@
* https://www.openssl.org/source/license.html
*/
#ifndef HEADER_RAND_LCL_H
# define HEADER_RAND_LCL_H
#ifndef OSSL_CRYPTO_RAND_LOCAL_H
# define OSSL_CRYPTO_RAND_LOCAL_H
# include <openssl/aes.h>
# include <openssl/evp.h>
@ -45,7 +45,6 @@
# define DRBG_MAX_LENGTH INT32_MAX
/*
* Maximum allocation size for RANDOM_POOL buffers
*
@ -72,6 +71,24 @@
* 1.5 * (RAND_DRBG_STRENGTH / 8))
*/
/*
* Initial allocation minimum.
*
* There is a distinction between the secure and normal allocation minimums.
* Ideally, the secure allocation size should be a power of two. The normal
* allocation size doesn't have any such restriction.
*
* The secure value is based on 128 bits of secure material, which is 16 bytes.
* Typically, the DRBGs will set a minimum larger than this so optimal
* allocation ought to take place (for full quality seed material).
*
* The normal value has been chosen by noticing that the rand_drbg_get_nonce
* function is usually the largest of the built in allocation (twenty four
* bytes and then appending another sixteen bytes). This means the buffer ends
* with 40 bytes. The value of forty eight is comfortably above this which
* allows some slack in the platform specific values used.
*/
# define RAND_POOL_MIN_ALLOCATION(secure) ((secure) ? 16 : 48)
/* DRBG status values */
typedef enum drbg_status_e {
@ -121,9 +138,11 @@ typedef struct rand_drbg_method_st {
* The state of a DRBG AES-CTR.
*/
typedef struct rand_drbg_ctr_st {
EVP_CIPHER_CTX *ctx;
EVP_CIPHER_CTX *ctx_ecb;
EVP_CIPHER_CTX *ctx_ctr;
EVP_CIPHER_CTX *ctx_df;
const EVP_CIPHER *cipher;
const EVP_CIPHER *cipher_ecb;
const EVP_CIPHER *cipher_ctr;
size_t keylen;
unsigned char K[32];
unsigned char V[16];
@ -150,9 +169,11 @@ struct rand_pool_st {
size_t len; /* current number of random bytes contained in the pool */
int attached; /* true pool was attached to existing buffer */
int secure; /* 1: allocated on the secure heap, 0: otherwise */
size_t min_len; /* minimum number of random bytes requested */
size_t max_len; /* maximum number of random bytes (allocated buffer size) */
size_t alloc_len; /* current number of bytes allocated */
size_t entropy; /* current entropy count in bits */
size_t entropy_requested; /* requested entropy count in bits */
};
@ -167,12 +188,12 @@ struct rand_drbg_st {
int secure; /* 1: allocated on the secure heap, 0: otherwise */
int type; /* the nid of the underlying algorithm */
/*
* Stores the value of the rand_fork_count global as of when we last
* reseeded. The DRBG reseeds automatically whenever drbg->fork_count !=
* rand_fork_count. Used to provide fork-safety and reseed this DRBG in
* the child process.
* Stores the return value of openssl_get_fork_id() as of when we last
* reseeded. The DRBG reseeds automatically whenever drbg->fork_id !=
* openssl_get_fork_id(). Used to provide fork-safety and reseed this
* DRBG in the child process.
*/
int fork_count;
int fork_id;
unsigned short flags; /* various external flags */
/*
@ -214,7 +235,7 @@ struct rand_drbg_st {
size_t max_perslen, max_adinlen;
/* Counts the number of generate requests since the last reseed. */
unsigned int reseed_gen_counter;
unsigned int generate_counter;
/*
* Maximum number of generate requests until a reseed is required.
* This value is ignored if it is zero.
@ -227,9 +248,15 @@ struct rand_drbg_st {
* This value is ignored if it is zero.
*/
time_t reseed_time_interval;
/*
* Enables reseed propagation (see following comment)
*/
unsigned int enable_reseed_propagation;
/*
* Counts the number of reseeds since instantiation.
* This value is ignored if it is zero.
* This value is ignored if enable_reseed_propagation is zero.
*
* This counter is used only for seed propagation from the <master> DRBG
* to its two children, the <public> and <private> DRBG. This feature is
@ -237,8 +264,7 @@ struct rand_drbg_st {
* is added by RAND_add() or RAND_seed() will have an immediate effect on
* the output of RAND_bytes() resp. RAND_priv_bytes().
*/
TSAN_QUALIFIER unsigned int reseed_prop_counter;
unsigned int reseed_next_counter;
TSAN_QUALIFIER unsigned int reseed_counter;
size_t seedlen;
DRBG_STATUS state;
@ -264,19 +290,6 @@ struct rand_drbg_st {
/* The global RAND method, and the global buffer and DRBG instance. */
extern RAND_METHOD rand_meth;
/*
* A "generation count" of forks. Incremented in the child process after a
* fork. Since rand_fork_count is increment-only, and only ever written to in
* the child process of the fork, which is guaranteed to be single-threaded, no
* locking is needed for normal (read) accesses; the rest of pthread fork
* processing is assumed to introduce the necessary memory barriers. Sibling
* children of a given parent will produce duplicate values, but this is not
* problematic because the reseeding process pulls input from the system CSPRNG
* and/or other global sources, so the siblings will end up generating
* different output streams.
*/
extern int rand_fork_count;
/* DRBG helpers */
int rand_drbg_restart(RAND_DRBG *drbg,
const unsigned char *buffer, size_t len, size_t entropy);

View file

@ -1,5 +1,5 @@
/*
* Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@ -14,21 +14,29 @@
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/rand.h>
#include "rand_lcl.h"
#include "internal/rand_int.h"
#include <openssl/crypto.h>
#include "rand_local.h"
#include "crypto/rand.h"
#include <stdio.h>
#include "internal/dso.h"
#if defined(__linux)
#ifdef __linux
# include <sys/syscall.h>
# ifdef DEVRANDOM_WAIT
# include <sys/shm.h>
# include <sys/utsname.h>
# endif
#endif
#if defined(__FreeBSD__)
#if (defined(__FreeBSD__) || defined(__NetBSD__)) && !defined(OPENSSL_SYS_UEFI)
# include <sys/types.h>
# include <sys/sysctl.h>
# include <sys/param.h>
#endif
#if defined(__OpenBSD__) || defined(__NetBSD__)
#if defined(__OpenBSD__)
# include <sys/param.h>
#endif
#if defined(__APPLE__)
# include <CommonCrypto/CommonRandom.h>
#endif
#if defined(OPENSSL_SYS_UNIX) || defined(__DJGPP__)
# include <sys/types.h>
@ -75,7 +83,8 @@ static uint64_t get_timer_bits(void);
# define OSSL_POSIX_TIMER_OKAY
# endif
# endif
#endif /* defined(OPENSSL_SYS_UNIX) || defined(__DJGPP__) */
#endif /* (defined(OPENSSL_SYS_UNIX) && !defined(OPENSSL_SYS_VXWORKS))
|| defined(__DJGPP__) */
#if defined(OPENSSL_RAND_SEED_NONE)
/* none means none. this simplifies the following logic */
@ -241,10 +250,12 @@ static ssize_t sysctl_random(char *buf, size_t buflen)
* when the sysctl returns long and we want to request something not a
* multiple of longs, which should never be the case.
*/
#if defined(__FreeBSD__)
if (!ossl_assert(buflen % sizeof(long) == 0)) {
errno = EINVAL;
return -1;
}
#endif
/*
* On NetBSD before 4.0 KERN_ARND was an alias for KERN_URND, and only
@ -262,7 +273,7 @@ static ssize_t sysctl_random(char *buf, size_t buflen)
mib[1] = KERN_ARND;
do {
len = buflen;
len = buflen > 256 ? 256 : buflen;
if (sysctl(mib, 2, buf, &len, NULL, 0) == -1)
return done > 0 ? done : -1;
done += len;
@ -275,6 +286,63 @@ static ssize_t sysctl_random(char *buf, size_t buflen)
# endif
# if defined(OPENSSL_RAND_SEED_GETRANDOM)
# if defined(__linux) && !defined(__NR_getrandom)
# if defined(__arm__)
# define __NR_getrandom (__NR_SYSCALL_BASE+384)
# elif defined(__i386__)
# define __NR_getrandom 355
# elif defined(__x86_64__)
# if defined(__ILP32__)
# define __NR_getrandom (__X32_SYSCALL_BIT + 318)
# else
# define __NR_getrandom 318
# endif
# elif defined(__xtensa__)
# define __NR_getrandom 338
# elif defined(__s390__) || defined(__s390x__)
# define __NR_getrandom 349
# elif defined(__bfin__)
# define __NR_getrandom 389
# elif defined(__powerpc__)
# define __NR_getrandom 359
# elif defined(__mips__) || defined(__mips64)
# if _MIPS_SIM == _MIPS_SIM_ABI32
# define __NR_getrandom (__NR_Linux + 353)
# elif _MIPS_SIM == _MIPS_SIM_ABI64
# define __NR_getrandom (__NR_Linux + 313)
# elif _MIPS_SIM == _MIPS_SIM_NABI32
# define __NR_getrandom (__NR_Linux + 317)
# endif
# elif defined(__hppa__)
# define __NR_getrandom (__NR_Linux + 339)
# elif defined(__sparc__)
# define __NR_getrandom 347
# elif defined(__ia64__)
# define __NR_getrandom 1339
# elif defined(__alpha__)
# define __NR_getrandom 511
# elif defined(__sh__)
# if defined(__SH5__)
# define __NR_getrandom 373
# else
# define __NR_getrandom 384
# endif
# elif defined(__avr32__)
# define __NR_getrandom 317
# elif defined(__microblaze__)
# define __NR_getrandom 385
# elif defined(__m68k__)
# define __NR_getrandom 352
# elif defined(__cris__)
# define __NR_getrandom 356
# elif defined(__aarch64__)
# define __NR_getrandom 278
# else /* generic */
# define __NR_getrandom 278
# endif
# endif
/*
* syscall_random(): Try to get random data using a system call
* returns the number of bytes returned in buf, or < 0 on error.
@ -300,12 +368,24 @@ static ssize_t syscall_random(void *buf, size_t buflen)
* - OpenBSD since 5.6
* - Linux since 3.17 with glibc 2.25
* - FreeBSD since 12.0 (1200061)
*
* Note: Sometimes getentropy() can be provided but not implemented
* internally. So we need to check errno for ENOSYS
*/
# if defined(__GNUC__) && __GNUC__>=2 && defined(__ELF__) && !defined(__hpux)
extern int getentropy(void *buffer, size_t length) __attribute__((weak));
if (getentropy != NULL)
return getentropy(buf, buflen) == 0 ? (ssize_t)buflen : -1;
if (getentropy != NULL) {
if (getentropy(buf, buflen) == 0)
return (ssize_t)buflen;
if (errno != ENOSYS)
return -1;
}
# elif defined(__APPLE__)
if (CCRandomGenerateBytes(buf, buflen) == kCCSuccess)
return (ssize_t)buflen;
return -1;
# else
union {
void *p;
@ -324,8 +404,8 @@ static ssize_t syscall_random(void *buf, size_t buflen)
# endif
/* Linux supports this since version 3.17 */
# if defined(__linux) && defined(SYS_getrandom)
return syscall(SYS_getrandom, buf, buflen, 0);
# if defined(__linux) && defined(__NR_getrandom)
return syscall(__NR_getrandom, buf, buflen, 0);
# elif (defined(__FreeBSD__) || defined(__NetBSD__)) && defined(KERN_ARND)
return sysctl_random(buf, buflen);
# else
@ -346,6 +426,92 @@ static struct random_device {
} random_devices[OSSL_NELEM(random_device_paths)];
static int keep_random_devices_open = 1;
# if defined(__linux) && defined(DEVRANDOM_WAIT) \
&& defined(OPENSSL_RAND_SEED_GETRANDOM)
static void *shm_addr;
static void cleanup_shm(void)
{
shmdt(shm_addr);
}
/*
* Ensure that the system randomness source has been adequately seeded.
* This is done by having the first start of libcrypto, wait until the device
* /dev/random becomes able to supply a byte of entropy. Subsequent starts
* of the library and later reseedings do not need to do this.
*/
static int wait_random_seeded(void)
{
static int seeded = OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID < 0;
static const int kernel_version[] = { DEVRANDOM_SAFE_KERNEL };
int kernel[2];
int shm_id, fd, r;
char c, *p;
struct utsname un;
fd_set fds;
if (!seeded) {
/* See if anything has created the global seeded indication */
if ((shm_id = shmget(OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID, 1, 0)) == -1) {
/*
* Check the kernel's version and fail if it is too recent.
*
* Linux kernels from 4.8 onwards do not guarantee that
* /dev/urandom is properly seeded when /dev/random becomes
* readable. However, such kernels support the getentropy(2)
* system call and this should always succeed which renders
* this alternative but essentially identical source moot.
*/
if (uname(&un) == 0) {
kernel[0] = atoi(un.release);
p = strchr(un.release, '.');
kernel[1] = p == NULL ? 0 : atoi(p + 1);
if (kernel[0] > kernel_version[0]
|| (kernel[0] == kernel_version[0]
&& kernel[1] >= kernel_version[1])) {
return 0;
}
}
/* Open /dev/random and wait for it to be readable */
if ((fd = open(DEVRANDOM_WAIT, O_RDONLY)) != -1) {
if (DEVRANDM_WAIT_USE_SELECT && fd < FD_SETSIZE) {
FD_ZERO(&fds);
FD_SET(fd, &fds);
while ((r = select(fd + 1, &fds, NULL, NULL, NULL)) < 0
&& errno == EINTR);
} else {
while ((r = read(fd, &c, 1)) < 0 && errno == EINTR);
}
close(fd);
if (r == 1) {
seeded = 1;
/* Create the shared memory indicator */
shm_id = shmget(OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID, 1,
IPC_CREAT | S_IRUSR | S_IRGRP | S_IROTH);
}
}
}
if (shm_id != -1) {
seeded = 1;
/*
* Map the shared memory to prevent its premature destruction.
* If this call fails, it isn't a big problem.
*/
shm_addr = shmat(shm_id, NULL, SHM_RDONLY);
if (shm_addr != (void *)-1)
OPENSSL_atexit(&cleanup_shm);
}
}
return seeded;
}
# else /* defined __linux && DEVRANDOM_WAIT && OPENSSL_RAND_SEED_GETRANDOM */
static int wait_random_seeded(void)
{
return 1;
}
# endif
/*
* Verify that the file descriptor associated with the random source is
* still valid. The rationale for doing this is the fact that it is not
@ -472,12 +638,12 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
# if defined(OPENSSL_RAND_SEED_NONE)
return rand_pool_entropy_available(pool);
# else
size_t bytes_needed;
size_t entropy_available = 0;
unsigned char *buffer;
size_t entropy_available;
# if defined(OPENSSL_RAND_SEED_GETRANDOM)
{
size_t bytes_needed;
unsigned char *buffer;
ssize_t bytes;
/* Maximum allowed number of consecutive unsuccessful attempts */
int attempts = 3;
@ -507,13 +673,16 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
# endif
# if defined(OPENSSL_RAND_SEED_DEVRANDOM)
bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
{
if (wait_random_seeded()) {
size_t bytes_needed;
unsigned char *buffer;
size_t i;
for (i = 0; bytes_needed > 0 && i < OSSL_NELEM(random_device_paths); i++) {
bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
for (i = 0; bytes_needed > 0 && i < OSSL_NELEM(random_device_paths);
i++) {
ssize_t bytes = 0;
/* Maximum allowed number of consecutive unsuccessful attempts */
/* Maximum number of consecutive unsuccessful attempts */
int attempts = 3;
const int fd = get_random_device(i);
@ -527,7 +696,7 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
if (bytes > 0) {
rand_pool_add_end(pool, bytes, 8 * bytes);
bytes_needed -= bytes;
attempts = 3; /* reset counter after successful attempt */
attempts = 3; /* reset counter on successful attempt */
} else if (bytes < 0 && errno != EINTR) {
break;
}
@ -535,7 +704,7 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
if (bytes < 0 || !keep_random_devices_open)
close_random_device(i);
bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
bytes_needed = rand_pool_bytes_needed(pool, 1);
}
entropy_available = rand_pool_entropy_available(pool);
if (entropy_available > 0)
@ -556,26 +725,29 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
# endif
# if defined(OPENSSL_RAND_SEED_EGD)
bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
if (bytes_needed > 0) {
{
static const char *paths[] = { DEVRANDOM_EGD, NULL };
size_t bytes_needed;
unsigned char *buffer;
int i;
for (i = 0; paths[i] != NULL; i++) {
buffer = rand_pool_add_begin(pool, bytes_needed);
if (buffer != NULL) {
size_t bytes = 0;
int num = RAND_query_egd_bytes(paths[i],
buffer, (int)bytes_needed);
if (num == (int)bytes_needed)
bytes = bytes_needed;
bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
for (i = 0; bytes_needed > 0 && paths[i] != NULL; i++) {
size_t bytes = 0;
int num;
rand_pool_add_end(pool, bytes, 8 * bytes);
entropy_available = rand_pool_entropy_available(pool);
}
if (entropy_available > 0)
return entropy_available;
buffer = rand_pool_add_begin(pool, bytes_needed);
num = RAND_query_egd_bytes(paths[i],
buffer, (int)bytes_needed);
if (num == (int)bytes_needed)
bytes = bytes_needed;
rand_pool_add_end(pool, bytes, 8 * bytes);
bytes_needed = rand_pool_bytes_needed(pool, 1);
}
entropy_available = rand_pool_entropy_available(pool);
if (entropy_available > 0)
return entropy_available;
}
# endif
@ -609,15 +781,18 @@ int rand_pool_add_nonce_data(RAND_POOL *pool)
int rand_pool_add_additional_data(RAND_POOL *pool)
{
struct {
int fork_id;
CRYPTO_THREAD_ID tid;
uint64_t time;
} data = { 0 };
/*
* Add some noise from the thread id and a high resolution timer.
* The fork_id adds some extra fork-safety.
* The thread id adds a little randomness if the drbg is accessed
* concurrently (which is the case for the <master> drbg).
*/
data.fork_id = openssl_get_fork_id();
data.tid = CRYPTO_THREAD_get_current_id();
data.time = get_timer_bits();
@ -704,4 +879,5 @@ static uint64_t get_timer_bits(void)
# endif
return time(NULL);
}
#endif /* defined(OPENSSL_SYS_UNIX) || defined(__DJGPP__) */
#endif /* (defined(OPENSSL_SYS_UNIX) && !defined(OPENSSL_SYS_VXWORKS))
|| defined(__DJGPP__) */

View file

@ -1,5 +1,5 @@
/*
* Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 2001-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@ -13,9 +13,11 @@
# define __NEW_STARLET 1 /* New starlet definitions since VMS 7.0 */
# include <unistd.h>
# include "internal/cryptlib.h"
# include <openssl/bio.h>
# include <openssl/err.h>
# include <openssl/rand.h>
# include "internal/rand_int.h"
# include "rand_lcl.h"
# include "crypto/rand.h"
# include "rand_local.h"
# include <descrip.h>
# include <dvidef.h>
# include <jpidef.h>
@ -32,10 +34,21 @@
# pragma message disable DOLLARID
# endif
# include <dlfcn.h> /* SYS$GET_ENTROPY presence */
# ifndef OPENSSL_RAND_SEED_OS
# error "Unsupported seeding method configured; must be os"
# endif
/*
* DATA COLLECTION METHOD
* ======================
*
* This is a method to get low quality entropy.
* It works by collecting all kinds of statistical data that
* VMS offers and using them as random seed.
*/
/* We need to make sure we have the right size pointer in some cases */
# if __INITIAL_POINTER_SIZE == 64
# pragma pointer_size save
@ -330,7 +343,7 @@ static void massage_JPI(ILE3 *items)
*/
#define ENTROPY_FACTOR 20
size_t rand_pool_acquire_entropy(RAND_POOL *pool)
size_t data_collect_method(RAND_POOL *pool)
{
ILE3 JPI_items_64bit[OSSL_NELEM(JPI_item_data_64bit) + 1];
ILE3 RMI_items_64bit[OSSL_NELEM(RMI_item_data_64bit) + 1];
@ -445,15 +458,12 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
* If we can't feed the requirements from the caller, we're in deep trouble.
*/
if (!ossl_assert(total_length >= bytes_needed)) {
char neededstr[20];
char availablestr[20];
char buf[100]; /* That should be enough */
BIO_snprintf(neededstr, sizeof(neededstr), "%zu", bytes_needed);
BIO_snprintf(availablestr, sizeof(availablestr), "%zu", total_length);
RANDerr(RAND_F_RAND_POOL_ACQUIRE_ENTROPY,
RAND_R_RANDOM_POOL_UNDERFLOW);
ERR_add_error_data(4, "Needed: ", neededstr, ", Available: ",
availablestr);
BIO_snprintf(buf, sizeof(buf), "Needed: %zu, Available: %zu",
bytes_needed, total_length);
RANDerr(RAND_F_DATA_COLLECT_METHOD, RAND_R_RANDOM_POOL_UNDERFLOW);
ERR_add_error_data(1, buf);
return 0;
}
@ -480,7 +490,7 @@ int rand_pool_add_nonce_data(RAND_POOL *pool)
/*
* Add process id, thread id, and a high resolution timestamp
* (where available, which is OpenVMS v8.4 and up) to ensure that
* the nonce is unique whith high probability for different process
* the nonce is unique with high probability for different process
* instances.
*/
data.pid = getpid();
@ -494,6 +504,80 @@ int rand_pool_add_nonce_data(RAND_POOL *pool)
return rand_pool_add(pool, (unsigned char *)&data, sizeof(data), 0);
}
/*
* SYS$GET_ENTROPY METHOD
* ======================
*
* This is a high entropy method based on a new system service that is
* based on getentropy() from FreeBSD 12. It's only used if available,
* and its availability is detected at run-time.
*
* We assume that this function provides full entropy random output.
*/
#define PUBLIC_VECTORS "SYS$LIBRARY:SYS$PUBLIC_VECTORS.EXE"
#define GET_ENTROPY "SYS$GET_ENTROPY"
static int get_entropy_address_flag = 0;
static int (*get_entropy_address)(void *buffer, size_t buffer_size) = NULL;
static int init_get_entropy_address(void)
{
if (get_entropy_address_flag == 0)
get_entropy_address = dlsym(dlopen(PUBLIC_VECTORS, 0), GET_ENTROPY);
get_entropy_address_flag = 1;
return get_entropy_address != NULL;
}
size_t get_entropy_method(RAND_POOL *pool)
{
/*
* The documentation says that SYS$GET_ENTROPY will give a maximum of
* 256 bytes of data.
*/
unsigned char buffer[256];
size_t bytes_needed;
size_t bytes_to_get = 0;
uint32_t status;
for (bytes_needed = rand_pool_bytes_needed(pool, 1);
bytes_needed > 0;
bytes_needed -= bytes_to_get) {
bytes_to_get =
bytes_needed > sizeof(buffer) ? sizeof(buffer) : bytes_needed;
status = get_entropy_address(buffer, bytes_to_get);
if (status == SS$_RETRY) {
/* Set to zero so the loop doesn't diminish |bytes_needed| */
bytes_to_get = 0;
/* Should sleep some amount of time */
continue;
}
if (status != SS$_NORMAL) {
lib$signal(status);
return 0;
}
rand_pool_add(pool, buffer, bytes_to_get, 8 * bytes_to_get);
}
return rand_pool_entropy_available(pool);
}
/*
* MAIN ENTROPY ACQUISITION FUNCTIONS
* ==================================
*
* These functions are called by the RAND / DRBG functions
*/
size_t rand_pool_acquire_entropy(RAND_POOL *pool)
{
if (init_get_entropy_address())
return get_entropy_method(pool);
return data_collect_method(pool);
}
int rand_pool_add_additional_data(RAND_POOL *pool)
{
struct {
@ -507,7 +591,11 @@ int rand_pool_add_additional_data(RAND_POOL *pool)
* concurrently (which is the case for the <master> drbg).
*/
data.tid = CRYPTO_THREAD_get_current_id();
#if __CRTL_VER >= 80400000
sys$gettim_prec(&data.time);
#else
sys$gettim((void*)&data.time);
#endif
return rand_pool_add(pool, (unsigned char *)&data, sizeof(data), 0);
}

View file

@ -1,5 +1,5 @@
/*
* Copyright 1995-2018 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
* this file except in compliance with the License. You can obtain a copy
@ -9,8 +9,8 @@
#include "internal/cryptlib.h"
#include <openssl/rand.h>
#include "rand_lcl.h"
#include "internal/rand_int.h"
#include "rand_local.h"
#include "crypto/rand.h"
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
# ifndef OPENSSL_RAND_SEED_OS
@ -18,8 +18,9 @@
# endif
# include <windows.h>
/* On Windows 7 or higher use BCrypt instead of the legacy CryptoAPI */
# if defined(_MSC_VER) && defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0601
/* On Windows Vista or higher use BCrypt instead of the legacy CryptoAPI */
# if defined(_MSC_VER) && _MSC_VER > 1500 /* 1500 = Visual Studio 2008 */ \
&& defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0600
# define USE_BCRYPTGENRANDOM
# endif
@ -129,7 +130,7 @@ int rand_pool_add_nonce_data(RAND_POOL *pool)
/*
* Add process id, thread id, and a high resolution timestamp to
* ensure that the nonce is unique whith high probability for
* ensure that the nonce is unique with high probability for
* different process instances.
*/
data.pid = GetCurrentProcessId();

View file

@ -1,5 +1,5 @@
/*
* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@ -26,7 +26,7 @@
#ifndef OPENSSL_NO_POSIX_IO
# include <sys/stat.h>
# include <fcntl.h>
# ifdef _WIN32
# if defined(_WIN32) && !defined(_WIN32_WCE)
# include <windows.h>
# include <io.h>
# define stat _stat
@ -254,7 +254,7 @@ const char *RAND_file_name(char *buf, size_t size)
size_t len;
int use_randfile = 1;
#if defined(_WIN32) && defined(CP_UTF8)
#if defined(_WIN32) && defined(CP_UTF8) && !defined(_WIN32_WCE)
DWORD envlen;
WCHAR *var;