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rsa exp: move declarations before code

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Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17287)
This commit is contained in:
Pauli 2021-12-16 20:12:25 +11:00 committed by Pauli
parent 7ca3bf792a
commit 2437832be1
1 changed files with 5 additions and 2 deletions
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7
crypto/bn/rsaz_exp_x2.c
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@ -412,6 +412,8 @@ int RSAZ_mod_exp_x2_ifma256(BN_ULONG *out,
int exp_chunk_no = exp_bit_no / 64;
int exp_chunk_shift = exp_bit_no % 64;
BN_ULONG red_table_idx_0, red_table_idx_1;
/*
* If rem == 0, then
* exp_bit_no = modulus_bitsize - exp_win_size
@ -423,8 +425,9 @@ int RSAZ_mod_exp_x2_ifma256(BN_ULONG *out,
OPENSSL_assert(rem != 0);
/* Process 1-st exp window - just init result */
BN_ULONG red_table_idx_0 = expz[exp_chunk_no + 0 * (exp_digits + 1)];
BN_ULONG red_table_idx_1 = expz[exp_chunk_no + 1 * (exp_digits + 1)];
red_table_idx_0 = expz[exp_chunk_no + 0 * (exp_digits + 1)];
red_table_idx_1 = expz[exp_chunk_no + 1 * (exp_digits + 1)];
/*
* The function operates with fixed moduli sizes divisible by 64,
* thus table index here is always in supported range [0, EXP_WIN_SIZE).