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124 lines
3.9 KiB
124 lines
3.9 KiB
// Copyright 2015 blake2-rfc Developers
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// Copyright 2017 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
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// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
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// http://opensource.org/licenses/MIT>, at your option. This file may not be
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// copied, modified, or distributed except according to those terms.
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//! The BLAKE2b hash function.
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//!
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//! # Examples
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//!
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//! ```
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//! use blake2_rfc::blake2b::{Blake2b, blake2b};
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//!
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//! // Using the convenience function.
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//! let hash = blake2b(64, &[], b"The quick brown fox jumps over the lazy dog");
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//!
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//! // Using the state context.
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//! let mut context = Blake2b::new(64);
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//! context.update(b"The quick brown fox jumps over the lazy dog");
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//! let hash = context.finalize();
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//!
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//! // Using the convenience function, with a key.
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//! let hash = blake2b(64, b"key", b"The quick brown fox jumps over the lazy dog");
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//!
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//! // Using the state context, with a key.
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//! let mut context = Blake2b::with_key(64, b"key");
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//! context.update(b"The quick brown fox jumps over the lazy dog");
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//! let hash = context.finalize();
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//! ```
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//!
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//! The returned hash is a `Blake2bResult`, which can be compared with
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//! a byte string (the comparison will take constant time), or converted
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//! into a byte string.
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#![cfg_attr(feature = "cargo-clippy", allow(unreadable_literal))]
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blake2_impl!(Blake2b, Blake2bResult, blake2b, u64, u64x4, 64, 32, 24, 16, 63, [
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0x6A09E667F3BCC908, 0xBB67AE8584CAA73B,
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0x3C6EF372FE94F82B, 0xA54FF53A5F1D36F1,
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0x510E527FADE682D1, 0x9B05688C2B3E6C1F,
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0x1F83D9ABFB41BD6B, 0x5BE0CD19137E2179,
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]);
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blake2_selftest_impl!(Blake2b, blake2b, [
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0xC2, 0x3A, 0x78, 0x00, 0xD9, 0x81, 0x23, 0xBD,
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0x10, 0xF5, 0x06, 0xC6, 0x1E, 0x29, 0xDA, 0x56,
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0x03, 0xD7, 0x63, 0xB8, 0xBB, 0xAD, 0x2E, 0x73,
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0x7F, 0x5E, 0x76, 0x5A, 0x7B, 0xCC, 0xD4, 0x75,
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], [ 20, 32, 48, 64 ], [ 0, 3, 128, 129, 255, 1024 ]);
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#[cfg(test)]
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mod tests {
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#![cfg_attr(feature = "cargo-clippy", allow(result_unwrap_used))]
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extern crate data_encoding;
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use self::data_encoding::HEXUPPER;
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use blake2::selftest_seq;
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use super::{Blake2b, blake2b};
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#[test]
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fn test_empty() {
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assert_eq!(&blake2b(64, &[], b""), &HEXUPPER.decode(
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b"786A02F742015903C6C6FD852552D272912F4740E15847618A86E217F71F5419D25E1031AFEE585313896444934EB04B903A685B1448B755D56F701AFE9BE2CE")
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.unwrap()[..]);
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}
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#[test]
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fn test_default() {
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assert_eq!(&Blake2b::default().finalize(), &HEXUPPER.decode(
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b"786A02F742015903C6C6FD852552D272912F4740E15847618A86E217F71F5419D25E1031AFEE585313896444934EB04B903A685B1448B755D56F701AFE9BE2CE")
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.unwrap()[..]);
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}
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#[test]
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fn selftest() {
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super::selftest();
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}
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#[test]
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fn test_split() {
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let data = selftest_seq(512);
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let mut ctx = Blake2b::new(64);
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ctx.update(&data[..32]);
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ctx.update(&data[32..64]);
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ctx.update(&data[64..448]);
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ctx.update(&data[448..]);
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assert_eq!(&ctx.finalize(), &blake2b(64, &[], &data));
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}
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#[cfg(feature = "std")]
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#[test]
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fn test_write() {
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use std::io::prelude::*;
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let data = selftest_seq(1024);
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let mut ctx = Blake2b::new(64);
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ctx.update(&data[..]);
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let mut writer = Blake2b::new(64);
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writer.write_all(&data[..]).unwrap();
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assert_eq!(&writer.finalize(), &ctx.finalize());
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}
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#[cfg_attr(debug_assertions, ignore)]
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#[test]
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fn test_4g() {
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const ZEROS: [u8; 4096] = [0; 4096];
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let mut state = Blake2b::new(64);
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for _ in 0..1048576 {
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state.update(&ZEROS);
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}
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assert_eq!(&state.finalize(), &HEXUPPER.decode(
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b"645572CA5756F9104329ED543735FC11904F0C18C4DF8ADF930F22D07F3094919A519FF34FD240AE3F5D5B4C8042225C109FB951036FDC99E7D2CD0C1D36B267")
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.unwrap()[..]);
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}
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}
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