diff options
| author | Alois Klink <alois@aloisklink.com> | 2023-04-16 18:03:23 +0200 |
|---|---|---|
| committer | Alois Klink <alois@aloisklink.com> | 2023-04-16 18:07:24 +0200 |
| commit | f659f7a1c70709caa1727bb0b7f836d170d35bb5 (patch) | |
| tree | 4dafb61c2bcf7a22541f6f5287098295bc606688 /crypto/bn | |
| parent | bn_nist: replace pointer bit-fiddling with ternary (diff) | |
| download | openssl-f659f7a1c70709caa1727bb0b7f836d170d35bb5.tar.xz openssl-f659f7a1c70709caa1727bb0b7f836d170d35bb5.zip | |
bn_nist: remove unused type-punning union `u`
We no longer need to cast function pointers to PTR_SIZE_INT.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/20748)
Diffstat (limited to 'crypto/bn')
| -rw-r--r-- | crypto/bn/bn_nist.c | 33 |
1 files changed, 12 insertions, 21 deletions
diff --git a/crypto/bn/bn_nist.c b/crypto/bn/bn_nist.c index 4ff320d0bb..b10bf1e51f 100644 --- a/crypto/bn/bn_nist.c +++ b/crypto/bn/bn_nist.c @@ -474,10 +474,7 @@ int BN_nist_mod_224(BIGNUM *r, const BIGNUM *a, const BIGNUM *field, sizeof(unsigned int)]; } buf; BN_ULONG c_d[BN_NIST_224_TOP], *res; - union { - bn_addsub_f f; - PTR_SIZE_INT p; - } u; + bn_addsub_f adjust; static const BIGNUM ossl_bignum_nist_p_224_sqr = { (BN_ULONG *)_nist_p_224_sqr, OSSL_NELEM(_nist_p_224_sqr), @@ -591,7 +588,7 @@ int BN_nist_mod_224(BIGNUM *r, const BIGNUM *a, const BIGNUM *field, # endif } #endif - u.f = bn_sub_words; + adjust = bn_sub_words; if (carry > 0) { carry = (int)bn_sub_words(r_d, r_d, _nist_p_224[carry - 1], @@ -610,12 +607,12 @@ int BN_nist_mod_224(BIGNUM *r, const BIGNUM *a, const BIGNUM *field, carry = (int)bn_add_words(r_d, r_d, _nist_p_224[-carry - 1], BN_NIST_224_TOP); - u.f = carry ? bn_sub_words : bn_add_words; + adjust = carry ? bn_sub_words : bn_add_words; } else carry = 1; /* otherwise it's effectively same as in BN_nist_mod_192... */ - res = ((*u.f) (c_d, r_d, _nist_p_224[0], BN_NIST_224_TOP) && carry) + res = ((*adjust) (c_d, r_d, _nist_p_224[0], BN_NIST_224_TOP) && carry) ? r_d : c_d; nist_cp_bn(r_d, res, BN_NIST_224_TOP); @@ -649,10 +646,7 @@ int BN_nist_mod_256(BIGNUM *r, const BIGNUM *a, const BIGNUM *field, sizeof(unsigned int)]; } buf; BN_ULONG c_d[BN_NIST_256_TOP], *res; - union { - bn_addsub_f f; - PTR_SIZE_INT p; - } u; + bn_addsub_f adjust; static const BIGNUM ossl_bignum_nist_p_256_sqr = { (BN_ULONG *)_nist_p_256_sqr, OSSL_NELEM(_nist_p_256_sqr), @@ -838,7 +832,7 @@ int BN_nist_mod_256(BIGNUM *r, const BIGNUM *a, const BIGNUM *field, } #endif /* see BN_nist_mod_224 for explanation */ - u.f = bn_sub_words; + adjust = bn_sub_words; if (carry > 0) carry = (int)bn_sub_words(r_d, r_d, _nist_p_256[carry - 1], @@ -847,11 +841,11 @@ int BN_nist_mod_256(BIGNUM *r, const BIGNUM *a, const BIGNUM *field, carry = (int)bn_add_words(r_d, r_d, _nist_p_256[-carry - 1], BN_NIST_256_TOP); - u.f = carry ? bn_sub_words : bn_add_words; + adjust = carry ? bn_sub_words : bn_add_words; } else carry = 1; - res = ((*u.f) (c_d, r_d, _nist_p_256[0], BN_NIST_256_TOP) && carry) + res = ((*adjust) (c_d, r_d, _nist_p_256[0], BN_NIST_256_TOP) && carry) ? r_d : c_d; nist_cp_bn(r_d, res, BN_NIST_256_TOP); @@ -889,10 +883,7 @@ int BN_nist_mod_384(BIGNUM *r, const BIGNUM *a, const BIGNUM *field, sizeof(unsigned int)]; } buf; BN_ULONG c_d[BN_NIST_384_TOP], *res; - union { - bn_addsub_f f; - PTR_SIZE_INT p; - } u; + bn_addsub_f adjust; static const BIGNUM ossl_bignum_nist_p_384_sqr = { (BN_ULONG *)_nist_p_384_sqr, OSSL_NELEM(_nist_p_384_sqr), @@ -1113,7 +1104,7 @@ int BN_nist_mod_384(BIGNUM *r, const BIGNUM *a, const BIGNUM *field, } #endif /* see BN_nist_mod_224 for explanation */ - u.f = bn_sub_words; + adjust = bn_sub_words; if (carry > 0) carry = (int)bn_sub_words(r_d, r_d, _nist_p_384[carry - 1], @@ -1122,11 +1113,11 @@ int BN_nist_mod_384(BIGNUM *r, const BIGNUM *a, const BIGNUM *field, carry = (int)bn_add_words(r_d, r_d, _nist_p_384[-carry - 1], BN_NIST_384_TOP); - u.f = carry ? bn_sub_words : bn_add_words; + adjust = carry ? bn_sub_words : bn_add_words; } else carry = 1; - res = ((*u.f) (c_d, r_d, _nist_p_384[0], BN_NIST_384_TOP) && carry) + res = ((*adjust) (c_d, r_d, _nist_p_384[0], BN_NIST_384_TOP) && carry) ? r_d : c_d; nist_cp_bn(r_d, res, BN_NIST_384_TOP); |