v2 / vlib / x / crypto / ascon / hash_test.v
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1// Copyright ©2025 blackshirt.


2// Use of this source code is governed by an MIT license


3// that can be found in the LICENSE file.


4//


5module ascon


6


7import arrays


8import encoding.hex


9


10struct HashTest {


11    count int


12    msg   string


13    md    string


14}


15


16// This test material mostly taken and adapted from Known-Answer-Test (KAT) of reference implementation.


17// See at https://github.com/ascon/ascon-c/blob/main/crypto_hash/asconhash256/LWC_HASH_KAT_128_256.txt


18fn test_hash256_sum_chunked() ! {


19    item := HashTest{


20        count: 500


21        msg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


22        md:    '8174F5E8DFC9441DBB7A183D56F431B1AEF9513E747A3878BB806BAE27655E3E'


23    }


24    msg := hex.decode(item.msg)!


25    md := hex.decode(item.md)!


26    // One shoot sum256 function


27    md0 := sum256(msg)


28    assert md0 == md


29


30    // Digest based


31    mut h := new_hash256()


32    expected_md := h.sum(msg)


33    assert expected_md == md


34


35    // with multistep


36    h.reset()


37    _ := h.Digest.absorb(msg)


38    h.Digest.finish()


39    mut dst := []u8{len: hash256_size}


40    h.Digest.squeeze(mut dst)


41    assert dst == md


42


43    // with splitted message


44    msg0 := msg[0..200]


45    msg1 := msg[200..400]


46    msg2 := msg[400..]


47    h.reset()


48    _ := h.Digest.absorb(msg0)


49    _ := h.Digest.absorb(msg1)


50    _ := h.Digest.absorb(msg2)


51    h.Digest.finish()


52    h.Digest.squeeze(mut dst)


53    assert dst == md


54


55    // with arrays chunk


56    h.reset()


57    chunks := arrays.chunk[u8](msg, 200)


58    mut n := 0


59    for chunk in chunks {


60        n += h.Digest.absorb(chunk)


61    }


62    assert n == msg.len


63    h.Digest.finish()


64    h.Digest.squeeze(mut dst)


65    assert dst == md


66


67    // with sum


68    h.reset()


69    for chunk in chunks {


70        n += h.write(chunk)!


71    }


72    chunked_md := h.sum([]u8{})


73    assert chunked_md == md


74}


75


76fn test_hash256_sum_kat() ! {


77    for item in ascon_hash256_test_data {


78        msg := hex.decode(item.msg)!


79        md := hex.decode(item.md)!


80        out := sum256(msg)


81        assert out == md


82


83        // work with Digest opaque


84        mut h := new_hash256()


85        exp_md := h.sum(msg)


86        assert exp_md == md


87


88        // Lets work in streaming-way


89        chunks := arrays.chunk[u8](msg, 7)


90        h.reset()


91        mut tot := 0


92        for chunk in chunks {


93            n := h.write(chunk)!


94            tot += n


95        }


96        assert msg.len == tot


97


98        chunked_md := h.sum([]u8{})


99        assert chunked_md == md


100    }


101}


102


103const ascon_hash256_test_data = [


104    HashTest{


105        count: 1


106        msg:   ''


107        md:    '0b3be5850f2f6b98caf29f8fdea89b64a1fa70aa249b8f839bd53baa304d92b2'


108    },


109    HashTest{


110        count: 2


111        msg:   '00'


112        md:    '0728621035af3ed2bca03bf6fde900f9456f5330e4b5ee23e7f6a1e70291bc80'


113    },


114    HashTest{


115        count: 3


116        msg:   '0001'


117        md:    '6115e7c9c4081c2797fc8fe1bc57a836afa1c5381e556dd583860ca2dfb48dd2'


118    },


119    HashTest{


120        count: 4


121        msg:   '000102'


122        md:    '265ab89a609f5a05dca57e83fbba700f9a2d2c4211ba4cc9f0a1a369e17b915c'


123    },


124    HashTest{


125        count: 5


126        msg:   '00010203'


127        md:    'd7e4c7ed9b8a325cd08b9ef259f8877054ecd8304fe1b2d7fd847137df6727ee'


128    },


129    HashTest{


130        count: 6


131        msg:   '0001020304'


132        md:    'c7b28962d4f5c2211f466f83d3c57ae1504387e2a326949747a8376447a6bb51'


133    },


134    HashTest{


135        count: 7


136        msg:   '000102030405'


137        md:    'dc0c6748af8ffe63e1084aa3e5786a194685c88c21348b29e184fb50409703bc'


138    },


139    HashTest{


140        count: 8


141        msg:   '00010203040506'


142        md:    '3e4d273ba69b3b9c53216107e88b75cdbeedbcbf8faf0219c3928ab62b116577'


143    },


144    HashTest{


145        count: 9


146        msg:   '0001020304050607'


147        md:    'b88e497ae8e6fb641b87ef622eb8f2fca0ed95383f7ffebe167acf1099ba764f'


148    },


149    HashTest{


150        count: 10


151        msg:   '000102030405060708'


152        md:    '94269C30E0296E1EC86655041841823EFA1927F520FD58C8E9BCE6197878C1A6'


153    },


154    HashTest{


155        count: 500


156        msg:   '000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F404142434445464748494A4B4C4D4E4F505152535455565758595A5B5C5D5E5F606162636465666768696A6B6C6D6E6F707172737475767778797A7B7C7D7E7F808182838485868788898A8B8C8D8E8F909192939495969798999A9B9C9D9E9FA0A1A2A3A4A5A6A7A8A9AAABACADAEAFB0B1B2B3B4B5B6B7B8B9BABBBCBDBEBFC0C1C2C3C4C5C6C7C8C9CACBCCCDCECFD0D1D2D3D4D5D6D7D8D9DADBDCDDDEDFE0E1E2E3E4E5E6E7E8E9EAEBECEDEEEFF0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F404142434445464748494A4B4C4D4E4F505152535455565758595A5B5C5D5E5F606162636465666768696A6B6C6D6E6F707172737475767778797A7B7C7D7E7F808182838485868788898A8B8C8D8E8F909192939495969798999A9B9C9D9E9FA0A1A2A3A4A5A6A7A8A9AAABACADAEAFB0B1B2B3B4B5B6B7B8B9BABBBCBDBEBFC0C1C2C3C4C5C6C7C8C9CACBCCCDCECFD0D1D2D3D4D5D6D7D8D9DADBDCDDDEDFE0E1E2E3E4E5E6E7E8E9EAEBECEDEEEFF0F1F2'


157        md:    '8174F5E8DFC9441DBB7A183D56F431B1AEF9513E747A3878BB806BAE27655E3E'


158    },


159    HashTest{


160        count: 501


161        msg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


162        md:    'E73D4DDB9D248BF2C0F8D49892D7455A4C3053153DE7F79BA4487C7D823F605C'


163    },


164    HashTest{


165        count: 502


166        msg:   '000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F404142434445464748494A4B4C4D4E4F505152535455565758595A5B5C5D5E5F606162636465666768696A6B6C6D6E6F707172737475767778797A7B7C7D7E7F808182838485868788898A8B8C8D8E8F909192939495969798999A9B9C9D9E9FA0A1A2A3A4A5A6A7A8A9AAABACADAEAFB0B1B2B3B4B5B6B7B8B9BABBBCBDBEBFC0C1C2C3C4C5C6C7C8C9CACBCCCDCECFD0D1D2D3D4D5D6D7D8D9DADBDCDDDEDFE0E1E2E3E4E5E6E7E8E9EAEBECEDEEEFF0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F404142434445464748494A4B4C4D4E4F505152535455565758595A5B5C5D5E5F606162636465666768696A6B6C6D6E6F707172737475767778797A7B7C7D7E7F808182838485868788898A8B8C8D8E8F909192939495969798999A9B9C9D9E9FA0A1A2A3A4A5A6A7A8A9AAABACADAEAFB0B1B2B3B4B5B6B7B8B9BABBBCBDBEBFC0C1C2C3C4C5C6C7C8C9CACBCCCDCECFD0D1D2D3D4D5D6D7D8D9DADBDCDDDEDFE0E1E2E3E4E5E6E7E8E9EAEBECEDEEEFF0F1F2F3F4'


167        md:    'B73FA04079263F6A733B67466552784B436138F41F80B72C4D5D03934B72207D'


168    },


169]


170