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LibCrypto: Add ::import_data() and ::export_data() to UnsignedBigInteger

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These functions allow conversion to-and-from big-endian buffers
This commit also adds a ""_bigint operator for easy bigint use
This commit is contained in:
AnotherTest 2020-04-10 01:00:37 +04:30 • committed by Andreas Kling
parent c52d3e65b9
commit 6b742c69bd
3 changed files with 66 additions and 0 deletions
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21
Userland/test-crypto.cpp
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@ -183,6 +183,9 @@ auto main(int argc, char** argv) -> int
puts("\tencrypt -- Access encryption functions");
puts("\tdecrypt -- Access decryption functions");
puts("\tlist -- List all known modes");
puts("these modes only contain tests");
puts("\tbigint -- Run big integer test suite");
puts("\tpk -- Run Public-key system tests");
return 0;
}
@ -308,6 +311,7 @@ void bigint_subtraction();
void bigint_multiplication();
void bigint_division();
void bigint_base10();
void bigint_import_export();
int aes_cbc_tests()
{
@ -805,6 +809,7 @@ int bigint_tests()
bigint_multiplication();
bigint_division();
bigint_base10();
bigint_import_export();
return 0;
}
@ -1027,3 +1032,19 @@ void bigint_base10()
}
}
}
void bigint_import_export()
{
{
I_TEST((BigInteger | BigEndian Decode / Encode roundtrip));
u8 random_bytes[128];
u8 target_buffer[128];
arc4random_buf(random_bytes, 128);
auto encoded = Crypto::UnsignedBigInteger::import_data(random_bytes, 128);
encoded.export_data(target_buffer, 128);
if (memcmp(target_buffer, random_bytes, 128) != 0)
FAIL(Could not roundtrip);
else
PASS;
}
}