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Allow kuznyechik-ctr-acpkm-omac
PKCS12 integration
#413
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When CMS files are created, IV (and, hence, these parameters) shouldn't be zeroes. |
Если прямо обязательно, чтобы была рандомная строка по умолчанию, то можно добавить в структуру контекста поле |
Просто оставить в инициализации не получается, потому что |
Да, это вариант |
Просто убрал своё удаление инициализации. Так тоже ключи шифруются и расшифровываются стандартной библиотекой. |
gost_grasshopper_cipher.c
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gost_grasshopper_cipher_ctx_ctr *ctr = EVP_CIPHER_CTX_get_cipher_data(ctx); | ||
if (init_zero_kdf_seed(ctr->kdf_seed) == 0) | ||
return -1; | ||
} |
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этот фрагмент дублирует инициализацию. заполнение kdf_seed
рандомной строкой есть в init()
тут я оказался не прав |
Правильно было бы использовать |
if (RAND_bytes(kdf_seed, 8) != 1) | ||
return 0; | ||
} | ||
|
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Так где сейчас берётся случайный IV?
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case EVP_CTRL_AEAD_GET_TAG: | ||
case EVP_CTRL_AEAD_SET_TAG: | ||
{ | ||
int taglen = arg; | ||
unsigned char *tag = ptr; | ||
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gost_grasshopper_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx); | ||
if (c->c.type != GRASSHOPPER_CIPHER_MGM) |
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MGM тоже нужен. Или этого #define не сохранилось?
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этот код был под #if 0
OpenSSL PKCS12 module sets all-zeros initial vector on encryption and doesn't change it on decryption. This patch addresses `kuznyechik-ctr-acpkm-omac` behavior differences in two places: 1. in `gost2015_acpkm_omac_init()` IV is initialized with a random value on encryption, thus overwriting user-defined value 2. in `gost_grasshopper_cipher_init` IV is initialized with a random value, thus overwriting assumed default all-zeros value This patch also implements 3 ctrl operations required by PKCS12 module: - EVP_CTRL_AEAD_GET_TAG - EVP_CTRL_AEAD_SET_TAG - EVP_CTRL_AEAD_TLS1_AAD Signed-off-by: Sergei Ianovich <[email protected]>
OpenSSL PKCS12 module sets all-zeros initial vector on encryption and doesn't change it on decryption.
This patch addresses
kuznyechik-ctr-acpkm-omac
behavior differences in two places:in
gost2015_acpkm_omac_init()
IV is initialized with a random value on encryption, thus overwriting user-defined valuein
gost_grasshopper_cipher_init
IV is initialized with a random value, thus overwriting assumed default all-zeros valueThis patch also implements 3 ctrl operations required by PKCS12 module:
Signed-off-by: Sergei Ianovich [email protected]