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Separate out to_montgomery and from_montgomery for bignum tests

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Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
This commit is contained in:
Tom Cosgrove 2022-12-06 12:20:43 +00:00
parent ecda186893
commit c240600f24
3 changed files with 11 additions and 6 deletions
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6
scripts/mbedtls_dev/bignum_core.py
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@ -764,7 +764,7 @@ class BignumCoreExpMod(BignumCoreTarget, bignum_common.ModOperationCommon):
def arguments(self) -> List[str]:
# Input 'a' has to be given in Montgomery form
mont_a = (self.int_a * self.r) % self.int_n
mont_a = self.to_montgomery(self.int_a)
arg_mont_a = self.format_arg('{:x}'.format(mont_a))
return [bignum_common.quote_str(n) for n in [self.arg_n,
arg_mont_a,
@ -772,9 +772,9 @@ class BignumCoreExpMod(BignumCoreTarget, bignum_common.ModOperationCommon):
] + self.result()
def result(self) -> List[str]:
# Result has to be given in Montgomery form
# Result has to be given in Montgomery form too
result = pow(self.int_a, self.int_b, self.int_n)
mont_result = (result * self.r) % self.int_n
mont_result = self.to_montgomery(result)
return [self.format_result(mont_result)]
@property