Files
c3c/test/unit/stdlib/hash/sha256.c3
Zack Puhl 0448e50b3d Fix Incorrect SHA256 Hashes for Large Inputs (#2247)
* fix >256MiB sha256 bitcount computation overflow
2025-06-28 03:20:33 +02:00

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module std::hash::sha256_test @test;
import std::hash::sha256;
fn void test_sha256_empty()
{
Sha256 sha;
sha.init();
sha.update("");
assert(sha.final() == x"E3B0C442 98FC1C14 9AFBF4C8 996FB924 27AE41E4 649B934C A495991B 7852B855");
}
fn void test_sha256_abc()
{
Sha256 sha;
sha.init();
sha.update("abc");
assert(sha.final() == x"BA7816BF 8F01CFEA 414140DE 5DAE2223 B00361A3 96177A9C B410FF61 F20015AD");
}
fn void test_sha256_longer()
{
Sha256 sha;
sha.init();
sha.update("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopqabcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq");
assert(sha.final() == x"59F109D9 533B2B70 E7C3B814 A2BD218F 78EA5D37 14455BC6 7987CF0D 664399CF");
}
fn void gigahash_sha256()
{
// > 256 MiB is just at the threshold where the SHA bitcounter rolls overflows 'len', but doesn't hit the uint.max limit...
char[] c = calloc(257 * (1024*1024))[:(257*1024*1024)];
defer free(c);
Sha256 sha;
sha.init();
sha.update(c);
assert(sha.final() == x"053EADFD EC682CF1 6F3F8704 C7609C57 868DD757 65E08DC5 A7491F5D 06BCB74D");
}
fn void test_pbkdf2()
{
char[] pw = "password";
char[] s = "salt";
char[32] out;
sha256::pbkdf2(pw, s, 1, &out);
assert(out == x'120FB6CF FCF8B32C 43E72252 56C4F837 A86548C9 2CCC3548 0805987C B70BE17B');
sha256::pbkdf2(pw, s, 2, &out);
assert(out == x'AE4D0C95 AF6B46D3 2D0ADFF9 28F06DD0 2A303F8E F3C251DF D6E2D85A 95474C43');
sha256::pbkdf2(pw, s, 4096, &out);
assert(out == x'C5E478D5 9288C841 AA530DB6 845C4C8D 962893A0 01CE4E11 A4963873 AA98134A');
}
fn void test_pbkdf2_2()
{
char[] pw = "passwordPASSWORDpassword";
char[] s = "saltSALTsaltSALTsaltSALTsaltSALTsalt";
char[32] out;
sha256::pbkdf2(pw, s, 4096, &out);
assert(out == x'348C89DB CBD32B2F 32D814B8 116E84CF 2B17347E BC180018 1C4E2A1F B8DD53E1');
}
fn void test_pbkdf2_3()
{
char[] pw = "pass\0word";
char[] salt = "sa\0lt";
char[32] out;
sha256::pbkdf2(pw, salt, 4096, &out);
assert(out == x'89B69D05 16F82989 3C696226 650A8687 8C029AC1 3EE27650 9D5AE58B 6466A724');
}
fn void test_sha256_million_a()
{
Sha256 sha;
sha.init();
const int COUNT = 1_000_000;
for (int i = 0; i < COUNT / 10; i++)
{
sha.update("aaaaaaaaaa");
}
assert(sha.final() == x"CDC76E5C 9914FB92 81A1C7E2 84D73E67 F1809A48 A497200E 046D39CC C7112CD0");
}