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Update some internal comments

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The refactoring of fill_random had left some obsolete bits in comments.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2022-10-27 20:15:13 +02:00
parent dd54324765
commit 22cdd0ccd3
2 changed files with 5 additions and 7 deletions
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7
library/bignum.c
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@ -1933,10 +1933,9 @@ cleanup:
/*
* Fill X with size bytes of random.
*
* Use a temporary bytes representation to make sure the result is the same
* regardless of the platform endianness (useful when f_rng is actually
* deterministic, eg for tests).
* The bytes returned from the RNG are used in a specific order which
* is suitable for deterministic ECDSA (see the specification of
* mbedtls_mpi_random() and the implementation in mbedtls_mpi_fill_random()).
*/
int mbedtls_mpi_fill_random( mbedtls_mpi *X, size_t size,
int (*f_rng)(void *, unsigned char *, size_t),

5
library/bignum_core.c
View file

@ -557,9 +557,8 @@ void mbedtls_mpi_core_ct_uint_table_lookup( mbedtls_mpi_uint *dest,
/* Fill X with n_bytes random bytes.
* X must already have room for those bytes.
* The ordering of the bytes returned from the RNG is suitable for
* deterministic ECDSA (see RFC 6979 §3.3 and mbedtls_mpi_core_random()).
* The size and sign of X are unchanged.
* n_bytes must not be 0.
* deterministic ECDSA (see RFC 6979 §3.3 and the specification of
* mbedtls_mpi_core_random()).
*/
int mbedtls_mpi_core_fill_random(
mbedtls_mpi_uint *X, size_t X_limbs,