109 lines
3.8 KiB
Nim
109 lines
3.8 KiB
Nim
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# Constantine
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# Copyright (c) 2018-2019 Status Research & Development GmbH
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# Copyright (c) 2020-Present Mamy André-Ratsimbazafy
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
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stew/byteutils,
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../constantine/[hashes, mac/mac_hmac, kdf/kdf_hkdf]
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proc hexToBytes(s: string): seq[byte] =
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if s.len != 0: return hexToSeqByte(s)
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template test(id, constants: untyped) =
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proc `test _ id`() =
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# We create a proc to avoid allocating too much globals.
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constants
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let
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bikm = hexToBytes(IKM)
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bsalt = hexToBytes(salt)
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binfo = hexToBytes(info)
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bprk = hexToBytes(PRK)
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bokm = hexToBytes(OKM)
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var output = newSeq[byte](L)
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var ctx: HKDF[HashType]
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var prk: array[HashType.digestSize, byte]
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# let salt = if bsalt.len == 0: nil
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# else: bsalt[0].unsafeAddr
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# let ikm = if bikm.len == 0: nil
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# else: bikm[0].unsafeAddr
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# let info = if binfo.len == 0: nil
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# else: binfo[0].unsafeAddr
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let
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salt = bsalt
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ikm = bikm
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info = binfo
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hkdfExtract(ctx, prk, salt, ikm)
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hkdfExpand(ctx, output, prk, info)
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doAssert @(prk) == bprk, "\nComputed 0x" & toHex(prk) &
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"\nbut expected " & PRK & '\n'
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doAssert output == bokm, "\nComputed 0x" & toHex(output) &
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"\nbut expected " & OKM & '\n'
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echo "HKDF Test ", astToStr(id), " - SUCCESS"
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`test _ id`()
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test 1: # Basic test case with SHA-256
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type HashType = sha256
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const
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IKM = "0x0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"
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salt = "0x000102030405060708090a0b0c"
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info = "0xf0f1f2f3f4f5f6f7f8f9"
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L = 42
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PRK = "0x077709362c2e32df0ddc3f0dc47bba63" &
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"90b6c73bb50f9c3122ec844ad7c2b3e5"
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OKM = "0x3cb25f25faacd57a90434f64d0362f2a" &
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"2d2d0a90cf1a5a4c5db02d56ecc4c5bf" &
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"34007208d5b887185865"
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test 2: # Test with SHA-256 and longer inputs/outputs
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type HashType = sha256
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const
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IKM = "0x000102030405060708090a0b0c0d0e0f" &
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"101112131415161718191a1b1c1d1e1f" &
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"202122232425262728292a2b2c2d2e2f" &
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"303132333435363738393a3b3c3d3e3f" &
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"404142434445464748494a4b4c4d4e4f"
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salt = "0x606162636465666768696a6b6c6d6e6f" &
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"707172737475767778797a7b7c7d7e7f" &
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"808182838485868788898a8b8c8d8e8f" &
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"909192939495969798999a9b9c9d9e9f" &
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"a0a1a2a3a4a5a6a7a8a9aaabacadaeaf"
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info = "0xb0b1b2b3b4b5b6b7b8b9babbbcbdbebf" &
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"c0c1c2c3c4c5c6c7c8c9cacbcccdcecf" &
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"d0d1d2d3d4d5d6d7d8d9dadbdcdddedf" &
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"e0e1e2e3e4e5e6e7e8e9eaebecedeeef" &
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"f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff"
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L = 82
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PRK = "0x06a6b88c5853361a06104c9ceb35b45c" &
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"ef760014904671014a193f40c15fc244"
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OKM = "0xb11e398dc80327a1c8e7f78c596a4934" &
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"4f012eda2d4efad8a050cc4c19afa97c" &
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"59045a99cac7827271cb41c65e590e09" &
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"da3275600c2f09b8367793a9aca3db71" &
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"cc30c58179ec3e87c14c01d5c1f3434f" &
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"1d87"
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test 3: # Test with SHA-256 and zero-length salt/info
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type HashType = sha256
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const
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IKM = "0x0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"
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salt = ""
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info = ""
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L = 42
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PRK = "0x19ef24a32c717b167f33a91d6f648bdf" &
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"96596776afdb6377ac434c1c293ccb04"
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OKM = "0x8da4e775a563c18f715f802a063c5a31" &
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"b8a11f5c5ee1879ec3454e5f3c738d2d" &
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"9d201395faa4b61a96c8"
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