ggstd 0.1.0

// Copyright 2023 The rust-ggstd authors. All rights reserved.
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

use super::HMAC;
use crate::crypto::md5;
use crate::crypto::sha1;
use crate::crypto::sha256;
use crate::encoding::hex;
use crate::hash::Hash;
use std::io::Write;

struct HmacTest {
    hash: &'static str,
    key: &'static [u8],
    input: &'static [u8],
    out: &'static str,
    size: usize,
    blocksize: usize,
}

impl HmacTest {
    const fn new(
        hash: &'static str,
        key: &'static [u8],
        input: &'static [u8],
        out: &'static str,
        size: usize,
        blocksize: usize,
    ) -> Self {
        Self {
            hash,
            key,
            input,
            out,
            size,
            blocksize,
        }
    }
}

const HMAC_TESTS: &[HmacTest] = &[
    // Tests from US FIPS 198
    // https://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf
    HmacTest::new(
        "sha1",
        &[
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
            0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b,
            0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29,
            0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
            0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
        ],
        b"Sample #1",
        "4f4ca3d5d68ba7cc0a1208c9c61e9c5da0403c0a",
        sha1::SIZE,
        sha1::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha1",
        &[
            0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d,
            0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43,
        ],
        b"Sample #2",
        "0922d3405faa3d194f82a45830737d5cc6c75d24",
        sha1::SIZE,
        sha1::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha1",
        &[
            0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d,
            0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b,
            0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
            0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
            0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95,
            0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3,
            0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1,
            0xb2, 0xb3,
        ],
        b"Sample #3",
        "bcf41eab8bb2d802f3d05caf7cb092ecf8d1a3aa",
        sha1::SIZE,
        sha1::BLOCK_SIZE,
    ),
    // Test from Plan 9.
    HmacTest::new(
        "md5",
        b"Jefe",
        b"what do ya want for nothing?",
        "750c783e6ab0b503eaa86e310a5db738",
        md5::SIZE,
        md5::BLOCK_SIZE,
    ),
    // Tests from RFC 4231
    HmacTest::new(
        "sha256",
        &[
            0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
            0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
        ],
        b"Hi There",
        "b0344c61d8db38535ca8afceaf0bf12b881dc200c9833da726e9376c2e32cff7",
        sha256::SIZE,
        sha256::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha256",
        b"Jefe",
        b"what do ya want for nothing?",
        "5bdcc146bf60754e6a042426089575c75a003f089d2739839dec58b964ec3843",
        sha256::SIZE,
        sha256::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha256",
        &[
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
        ],
        &[
            0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
            0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
            0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
            0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
        ],
        "773ea91e36800e46854db8ebd09181a72959098b3ef8c122d9635514ced565fe",
        sha256::SIZE,
        sha256::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha256",
        &[
            0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
            0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
        ],
        &[
            0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
            0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
            0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
            0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
        ],
        "82558a389a443c0ea4cc819899f2083a85f0faa3e578f8077a2e3ff46729665b",
        sha256::SIZE,
        sha256::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha256",
        &[
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa,
        ],
        b"Test Using Larger Than Block-Size Key - Hash Key First",
        "60e431591ee0b67f0d8a26aacbf5b77f8e0bc6213728c5140546040f0ee37f54",
        sha256::SIZE,
        sha256::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha256",
        &[
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa,
        ],
        b"This is a test using a larger than block-size key and a larger than block-size data. The key needs to be hashed before being used by the HMAC algorithm.",
        "9b09ffa71b942fcb27635fbcd5b0e944bfdc63644f0713938a7f51535c3a35e2",
        sha256::SIZE,
        sha256::BLOCK_SIZE,
    ),
    // Tests from https://csrc.nist.gov/groups/ST/toolkit/examples.html
    // (truncated tag tests are left out)
    HmacTest::new(
        "sha1",
        &[
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
            0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
            0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
            0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
            0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
            0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
        ],
        b"Sample message for keylen=blocklen",
        "5fd596ee78d5553c8ff4e72d266dfd192366da29",
        sha1::SIZE,
        sha1::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha1",
        &[
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
            0x10, 0x11, 0x12, 0x13,
        ],
        b"Sample message for keylen<blocklen",
        "4c99ff0cb1b31bd33f8431dbaf4d17fcd356a807",
        sha1::SIZE,
        sha1::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha1",
        &[
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
            0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
            0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
            0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
            0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
            0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
            0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
            0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
            0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
            0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
            0x60, 0x61, 0x62, 0x63,
        ],
        b"Sample message for keylen=blocklen",
        "2d51b2f7750e410584662e38f133435f4c4fd42a",
        sha1::SIZE,
        sha1::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha224",
        &[
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
            0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
            0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
            0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
            0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
            0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
        ],
        b"Sample message for keylen=blocklen",
        "c7405e3ae058e8cd30b08b4140248581ed174cb34e1224bcc1efc81b",
        sha256::SIZE224,
        sha256::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha224",
        &[
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
            0x18, 0x19, 0x1a, 0x1b,
        ],
        b"Sample message for keylen<blocklen",
        "e3d249a8cfb67ef8b7a169e9a0a599714a2cecba65999a51beb8fbbe",
        sha256::SIZE224,
        sha256::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha224",
        &[
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
            0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
            0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
            0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
            0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
            0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
            0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
            0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
            0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
            0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
            0x60, 0x61, 0x62, 0x63,
        ],
        b"Sample message for keylen=blocklen",
        "91c52509e5af8531601ae6230099d90bef88aaefb961f4080abc014d",
        sha256::SIZE224,
        sha256::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha256",
        &[
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
            0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
            0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
            0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
            0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
            0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
        ],
        b"Sample message for keylen=blocklen",
        "8bb9a1db9806f20df7f77b82138c7914d174d59e13dc4d0169c9057b133e1d62",
        sha256::SIZE,
        sha256::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha256",
        &[
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
            0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
        ],
        b"Sample message for keylen<blocklen",
        "a28cf43130ee696a98f14a37678b56bcfcbdd9e5cf69717fecf5480f0ebdf790",
        sha256::SIZE,
        sha256::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha256",
        &[
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
            0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
            0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
            0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
            0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
            0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
            0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
            0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
            0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
            0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
            0x60, 0x61, 0x62, 0x63,
        ],
        b"Sample message for keylen=blocklen",
        "bdccb6c72ddeadb500ae768386cb38cc41c63dbb0878ddb9c7a38a431b78378d",
        sha256::SIZE,
        sha256::BLOCK_SIZE,
    ),
    // HmacTest::new(
    // 		sha512.New384,
    // 		&[
    // 			0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
    // 			0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
    // 			0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
    // 			0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
    // 			0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
    // 			0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
    // 			0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
    // 			0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
    // 			0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
    // 			0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
    // 			0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
    // 			0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
    // 			0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
    // 			0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
    // 			0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
    // 			0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
    // 		],
    // 		b"Sample message for keylen=blocklen",
    // 		"63c5daa5e651847ca897c95814ab830bededc7d25e83eef9195cd45857a37f448947858f5af50cc2b1b730ddf29671a9",
    // 		sha512.Size384,
    // 		sha512::BLOCK_SIZE,
    // 	),
    // HmacTest::new(
    // 		sha512.New384,
    // 		&[
    // 			0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
    // 			0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
    // 			0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
    // 			0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
    // 			0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
    // 			0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
    // 		],
    // 		b"Sample message for keylen<blocklen",
    // 		"6eb242bdbb582ca17bebfa481b1e23211464d2b7f8c20b9ff2201637b93646af5ae9ac316e98db45d9cae773675eeed0",
    // 		sha512.Size384,
    // 		sha512::BLOCK_SIZE,
    // 	),
    // HmacTest::new(
    // 		sha512.New384,
    // 		&[
    // 			0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
    // 			0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
    // 			0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
    // 			0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
    // 			0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
    // 			0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
    // 			0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
    // 			0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
    // 			0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
    // 			0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
    // 			0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
    // 			0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
    // 			0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
    // 			0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
    // 			0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
    // 			0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
    // 			0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
    // 			0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
    // 			0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
    // 			0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
    // 			0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
    // 			0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
    // 			0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
    // 			0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
    // 			0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
    // 		],
    // 		b"Sample message for keylen=blocklen",
    // 		"5b664436df69b0ca22551231a3f0a3d5b4f97991713cfa84bff4d0792eff96c27dccbbb6f79b65d548b40e8564cef594",
    // 		sha512.Size384,
    // 		sha512::BLOCK_SIZE,
    // 	),
    // HmacTest::new(
    // 		sha512.New,
    // 		&[
    // 			0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
    // 			0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
    // 			0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
    // 			0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
    // 			0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
    // 			0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
    // 			0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
    // 			0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
    // 			0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
    // 			0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
    // 			0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
    // 			0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
    // 			0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
    // 			0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
    // 			0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
    // 			0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
    // 		],
    // 		b"Sample message for keylen=blocklen",
    // 		"fc25e240658ca785b7a811a8d3f7b4ca" +
    // 			"48cfa26a8a366bf2cd1f836b05fcb024bd36853081811d6c" +
    // 			"ea4216ebad79da1cfcb95ea4586b8a0ce356596a55fb1347",
    // 		sha512::SIZE,
    // 		sha512::BLOCK_SIZE,
    // 	),
    // HmacTest::new(
    // 		sha512.New,
    // 		&[
    // 			0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
    // 			0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
    // 			0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
    // 			0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
    // 			0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
    // 			0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
    // 			0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
    // 			0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
    // 		],
    // 		b"Sample message for keylen<blocklen",
    // 		"fd44c18bda0bb0a6ce0e82b031bf2818" +
    // 			"f6539bd56ec00bdc10a8a2d730b3634de2545d639b0f2cf7" +
    // 			"10d0692c72a1896f1f211c2b922d1a96c392e07e7ea9fedc",
    // 		sha512::SIZE,
    // 		sha512::BLOCK_SIZE,
    // 	),
    // HmacTest::new(
    // 		sha512.New,
    // 		&[
    // 			0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
    // 			0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
    // 			0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
    // 			0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
    // 			0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
    // 			0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
    // 			0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
    // 			0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
    // 			0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
    // 			0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
    // 			0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
    // 			0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
    // 			0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
    // 			0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
    // 			0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
    // 			0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
    // 			0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
    // 			0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
    // 			0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
    // 			0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
    // 			0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
    // 			0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
    // 			0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
    // 			0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
    // 			0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
    // 		],
    // 		b"Sample message for keylen=blocklen",
    // 		"d93ec8d2de1ad2a9957cb9b83f14e76a" +
    // 			"d6b5e0cce285079a127d3b14bccb7aa7286d4ac0d4ce6421" +
    // 			"5f2bc9e6870b33d97438be4aaa20cda5c5a912b48b8e27f3",
    // 		sha512::SIZE,
    // 		sha512::BLOCK_SIZE,
    // 	),
    // HMAC without key is dumb but should probably not fail.
    HmacTest::new(
        "sha1",
        &[],
        b"message",
        "d5d1ed05121417247616cfc8378f360a39da7cfa",
        sha1::SIZE,
        sha1::BLOCK_SIZE,
    ),
    HmacTest::new(
        "sha256",
        &[],
        b"message",
        "eb08c1f56d5ddee07f7bdf80468083da06b64cf4fac64fe3a90883df5feacae4",
        sha256::SIZE,
        sha256::BLOCK_SIZE,
    ),
    // HmacTest::new(
    // 		sha512.New,
    // 		&[],
    // 		b"message",
    // 		"08fce52f6395d59c2a3fb8abb281d74ad6f112b9a9c787bcea290d94dadbc82b2ca3e5e12bf2277c7fedbb0154d5493e41bb7459f63c8e39554ea3651b812492",
    // 		sha512::SIZE,
    // 		sha512::BLOCK_SIZE,
    // 	),
];

#[test]
fn test_hmac() {
    for (i, tt) in HMAC_TESTS.iter().enumerate() {
        let mut h: Box<dyn Hash> = match tt.hash {
            "sha1" => Box::new(HMAC::new(sha1::Digest::new, tt.key)),
            "sha256" => Box::new(HMAC::new(sha256::Digest::new, tt.key)),
            "sha224" => Box::new(HMAC::new(sha256::Digest::new224, tt.key)),
            "md5" => Box::new(HMAC::new(md5::Digest::new, tt.key)),
            _ => panic!("unsupported hash {}", tt.hash),
        };
        assert_eq!(
            h.size(),
            tt.size,
            "Size: got {}, want {}",
            h.size(),
            tt.size
        );
        assert_eq!(
            h.block_size(),
            tt.blocksize,
            "block_size: got {}, want {}",
            h.block_size(),
            tt.blocksize
        );
        for j in 0..4 {
            let n = h.write(tt.input).unwrap();
            assert_eq!(
                n,
                tt.input.len(),
                "test {}.{}: Write({}) = {}",
                i,
                j,
                tt.input.len(),
                n,
            );

            // Repetitive Sum() calls should return the same value
            for k in 0..2 {
                let sum = hex::encode_to_string(&h.sum(&[]));
                assert_eq!(
                    sum, tt.out,
                    "test {}.{}.{}: have {} want {}\n",
                    i, j, k, sum, tt.out
                );
            }

            // Second iteration: make sure reset works.
            h.reset();

            // 			// Third and fourth iteration: make sure hmac works on
            // 			// hashes without MarshalBinary/UnmarshalBinary
            // 			if j == 1 {
            // 				h = New(fn() hash.Hash { return justHash{tt.hash()} }, tt.key)
            // 			}
        }
    }
}

// #[test]
// fn TestNonUniqueHash() {
// 	if boring.Enabled {
// 		t.Skip("hash.Hash provided by boringcrypto are not comparable")
// 	}
// 	sha := "sha256"()
// 	defer fn() {
// 		err := recover()
// 		if err == nil {
// 			t.Error("expected panic when calling New with a non-unique hash generation function")
// 		}
// 	}()
// 	New(fn() hash.Hash { return sha }, []byte("bytes"))
// }

// // justHash implements just the hash.Hash methods and nothing else
// type justHash struct {
// 	hash.Hash
// }

#[test]
fn test_equal() {
    let a = b"test";
    let b = b"test1";
    let c = b"test2";
    assert!(super::equal(b, b), "Equal failed with equal arguments");
    assert!(
        !super::equal(a, b),
        "Equal accepted a prefix of the second argument"
    );
    assert!(
        !super::equal(b, a),
        "Equal accepted a prefix of the first argument"
    );
    assert!(!super::equal(b, c), "Equal accepted unequal slices");
}

#[test]
fn test_write_after_sum() {
    let mut h = HMAC::new(sha1::Digest::new, &[]);
    h.write_all(b"hello").unwrap();
    let sum_hello = h.sum(&[]);

    let mut h = HMAC::new(sha1::Digest::new, &[]);
    h.write_all(b"hello world").unwrap();
    let sum_hello_world = h.sum(&[]);

    // Test that Sum has no effect on future Sum or Write operations.
    // This is a bit unusual as far as usage, but it's allowed
    // by the definition of Go hash.Hash, and some clients expect it to work.
    let mut h = HMAC::new(sha1::Digest::new, &[]);
    h.write_all(b"hello").unwrap();
    // 	if
    let sum = h.sum(&[]);
    assert_eq!(
        sum, sum_hello,
        "1st Sum after hello = {:?}, want {:?}",
        sum, sum_hello,
    );
    let sum = h.sum(&[]);
    assert_eq!(
        sum, sum_hello,
        "2st Sum after hello = {:?}, want {:?}",
        sum, sum_hello,
    );

    h.write_all(b" world").unwrap();
    let sum = h.sum(&[]);
    assert_eq!(
        sum, sum_hello_world,
        "1st Sum after hello world = {:?}, want {:?}",
        sum, sum_hello_world,
    );
    let sum = h.sum(&[]);
    assert_eq!(
        sum, sum_hello_world,
        "2st Sum after hello world = {:?}, want {:?}",
        sum, sum_hello_world,
    );

    h.reset();
    h.write_all(b"hello").unwrap();
    let sum = h.sum(&[]);
    assert_eq!(
        sum, sum_hello,
        "Sum after reset + hello = {:?}, want {:?}",
        sum, sum_hello,
    );
}

// fn BenchmarkHMACSHA256_1K(b *testing.B) {
// 	key := make([]byte, 32)
// 	buf := make([]byte, 1024)
// 	h := New("sha256", key)
// 	b.SetBytes(int64(len(buf)))
// 	for i := 0; i < b.N; i++ {
// 		h.Write(buf)
// 		mac := h.sum(&[])
// 		h.reset()
// 		buf[0] = mac[0]
// 	}
// }

// fn BenchmarkHMACSHA256_32(b *testing.B) {
// 	key := make([]byte, 32)
// 	buf := make([]byte, 32)
// 	h := New("sha256", key)
// 	b.SetBytes(int64(len(buf)))
// 	for i := 0; i < b.N; i++ {
// 		h.Write(buf)
// 		mac := h.sum(&[])
// 		h.reset()
// 		buf[0] = mac[0]
// 	}
// }

// fn BenchmarkNewWriteSum(b *testing.B) {
// 	buf := make([]byte, 32)
// 	b.SetBytes(int64(len(buf)))
// 	for i := 0; i < b.N; i++ {
// 		h := New("sha256", make([]byte, 32))
// 		h.Write(buf)
// 		mac := h.sum(&[])
// 		buf[0] = mac[0]
// 	}
// }