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Clear seed source structures.

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If the structures have empty padding bytes, ensure they are zeroed.
These structures are added to seed pools as complete blocks including
any padding and alignment bytes.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8610)
This commit is contained in:
Pauli 2019-03-29 17:46:11 +10:00
parent 9c98aa354d
commit 678d2681b2
3 changed files with 24 additions and 6 deletions
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10
crypto/rand/rand_unix.c
View File

@ -615,7 +615,10 @@ int rand_pool_add_nonce_data(RAND_POOL *pool)
pid_t pid;
CRYPTO_THREAD_ID tid;
uint64_t time;
} data = { 0 };
} data;
/* Erase the entire structure including any padding */
memset(&data, 0, sizeof(data));
/*
* Add process id, thread id, and a high resolution timestamp to
@ -634,7 +637,10 @@ int rand_pool_add_additional_data(RAND_POOL *pool)
struct {
CRYPTO_THREAD_ID tid;
uint64_t time;
} data = { 0 };
} data;
/* Erase the entire structure including any padding */
memset(&data, 0, sizeof(data));
/*
* Add some noise from the thread id and a high resolution timer.

10
crypto/rand/rand_vms.c
View File

@ -475,7 +475,10 @@ int rand_pool_add_nonce_data(RAND_POOL *pool)
pid_t pid;
CRYPTO_THREAD_ID tid;
uint64_t time;
} data = { 0 };
} data;
/* Erase the entire structure including any padding */
memset(&data, 0, sizeof(data));
/*
* Add process id, thread id, and a high resolution timestamp
@ -499,7 +502,10 @@ int rand_pool_add_additional_data(RAND_POOL *pool)
struct {
CRYPTO_THREAD_ID tid;
uint64_t time;
} data = { 0 };
} data;
/* Erase the entire structure including any padding */
memset(&data, 0, sizeof(data));
/*
* Add some noise from the thread id and a high resolution timer.

10
crypto/rand/rand_win.c
View File

@ -125,7 +125,10 @@ int rand_pool_add_nonce_data(RAND_POOL *pool)
DWORD pid;
DWORD tid;
FILETIME time;
} data = { 0 };
} data;
/* Erase the entire structure including any padding */
memset(&data, 0, sizeof(data));
/*
* Add process id, thread id, and a high resolution timestamp to
@ -144,7 +147,10 @@ int rand_pool_add_additional_data(RAND_POOL *pool)
struct {
DWORD tid;
LARGE_INTEGER time;
} data = { 0 };
} data;
/* Erase the entire structure including any padding */
memset(&data, 0, sizeof(data));
/*
* Add some noise from the thread id and a high resolution timer.