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mbedtls_entropy_func returns up to MBEDTLS_ENTROPY_BLOCK_SIZE bytes. This is the output of a hash function and does not indicate how many bytes of entropy went into the hash computation. Enforce that mbedtls_entropy_func gathers a total of MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. Weak sources don't count for this calculation. This is complementary to the per-source threshold mechanism. In particular, we define system sources with a threshold of 32. But when using SHA-512 for the entropy accumulator, MBEDTLS_ENTROPY_BLOCK_SIZE = 64, so users can expect 64 bytes' worth of entropy. Before, you only got 64 bytes of entropy if there were two sources. Now you get 64 bytes of entropy even with a single source with a threshold of 32. |
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.. | ||
.gitignore | ||
aes.c | ||
aesni.c | ||
arc4.c | ||
aria.c | ||
asn1parse.c | ||
asn1write.c | ||
base64.c | ||
bignum.c | ||
blowfish.c | ||
camellia.c | ||
ccm.c | ||
chacha20.c | ||
chachapoly.c | ||
cipher_wrap.c | ||
cipher.c | ||
cmac.c | ||
CMakeLists.txt | ||
ctr_drbg.c | ||
des.c | ||
dhm.c | ||
ecdh.c | ||
ecdsa.c | ||
ecjpake.c | ||
ecp_curves.c | ||
ecp.c | ||
entropy_poll.c | ||
entropy.c | ||
error.c | ||
gcm.c | ||
havege.c | ||
hkdf.c | ||
hmac_drbg.c | ||
Makefile | ||
md2.c | ||
md4.c | ||
md5.c | ||
md.c | ||
memory_buffer_alloc.c | ||
nist_kw.c | ||
oid.c | ||
padlock.c | ||
pem.c | ||
pk_wrap.c | ||
pk.c | ||
pkcs5.c | ||
pkcs12.c | ||
pkparse.c | ||
pkwrite.c | ||
platform_util.c | ||
platform.c | ||
poly1305.c | ||
psa_crypto_core.h | ||
psa_crypto_invasive.h | ||
psa_crypto_its.h | ||
psa_crypto_se.c | ||
psa_crypto_se.h | ||
psa_crypto_service_integration.h | ||
psa_crypto_slot_management.c | ||
psa_crypto_slot_management.h | ||
psa_crypto_storage.c | ||
psa_crypto_storage.h | ||
psa_crypto.c | ||
psa_its_file.c | ||
ripemd160.c | ||
rsa_internal.c | ||
rsa.c | ||
sha1.c | ||
sha256.c | ||
sha512.c | ||
threading.c | ||
timing.c | ||
version_features.c | ||
version.c | ||
xtea.c |