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mbedtls_ecp_gen_privkey_mx: rename n_bits to high_bit

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For Montgomery keys, n_bits is actually the position of the highest
bit and not the number of bits, which would be 1 more (fence vs
posts). Rename the variable accordingly to lessen the confusion.

No semantic change.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2021-03-24 12:34:40 +01:00
parent de33213f23
commit 3838f28c33
2 changed files with 9 additions and 9 deletions
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2
library/ecp_invasive.h
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@ -57,7 +57,7 @@ void mbedtls_ecp_fix_negative( mbedtls_mpi *N, signed char c, size_t bits );
* \note - [Curve25519] http://cr.yp.to/ecdh/curve25519-20060209.pdf
* - [RFC7748] https://tools.ietf.org/html/rfc7748
*
* \p n_bits The position of the high-order bit of the key to generate.
* \p high_bit The position of the high-order bit of the key to generate.
* This is the bit-size of the key minus 1:
* 254 for Curve25519 or 447 for Curve448.
* \param d The randomly generated key. This is a number of size