linux.git/crypto/testmgr.h, branch v4.20

crypto: testmgr - update sm4 test vectors

2018-09-28T04:46:26+00:00

Add additional test vectors from "The SM4 Blockcipher Algorithm And Its
Modes Of Operations" draft-ribose-cfrg-sm4-10 and register cipher speed
tests for sm4.

Signed-off-by: Gilad Ben-Yossef 
Signed-off-by: Herbert Xu

crypto: tcrypt - remove remnants of pcomp-based zlib

2018-09-28T04:46:26+00:00

Commit 110492183c4b ("crypto: compress - remove unused pcomp interface")
removed pcomp interface but missed cleaning up tcrypt.

Signed-off-by: Horia Geantă 
Signed-off-by: Herbert Xu

crypto: testmgr - Add test for LRW counter wrap-around

2018-09-21T05:24:52+00:00

This patch adds a test vector for lrw(aes) that triggers wrap-around of
the counter, which is a tricky corner case.

Suggested-by: Eric Biggers 
Signed-off-by: Ondrej Mosnacek 
Signed-off-by: Herbert Xu

crypto: speck - remove Speck

2018-09-04T03:35:03+00:00

These are unused, undesired, and have never actually been used by
anybody. The original authors of this code have changed their mind about
its inclusion. While originally proposed for disk encryption on low-end
devices, the idea was discarded [1] in favor of something else before
that could really get going. Therefore, this patch removes Speck.

[1] https://marc.info/?l=linux-crypto-vger&m=153359499015659

Signed-off-by: Jason A. Donenfeld 
Acked-by: Eric Biggers 
Cc: stable@vger.kernel.org
Acked-by: Ard Biesheuvel 
Signed-off-by: Herbert Xu

crypto: dh - fix calculating encoded key size

2018-08-03T10:06:06+00:00

It was forgotten to increase DH_KPP_SECRET_MIN_SIZE to include 'q_size',
causing an out-of-bounds write of 4 bytes in crypto_dh_encode_key(), and
an out-of-bounds read of 4 bytes in crypto_dh_decode_key().  Fix it, and
fix the lengths of the test vectors to match this.

Reported-by: syzbot+6d38d558c25b53b8f4ed@syzkaller.appspotmail.com
Fixes: e3fe0ae12962 ("crypto: dh - add public key verification test")
Signed-off-by: Eric Biggers 
Signed-off-by: Herbert Xu

crypto: dh - update test for public key verification

2018-07-20T05:51:21+00:00

By adding a zero byte-length for the DH parameter Q value, the public
key verification test is disabled for the given test.

Reported-by: Eric Biggers 
Signed-off-by: Stephan Mueller 
Signed-off-by: Herbert Xu

crypto: vmac - remove insecure version with hardcoded nonce

2018-07-01T13:00:44+00:00

Remove the original version of the VMAC template that had the nonce
hardcoded to 0 and produced a digest with the wrong endianness.  I'm
unsure whether this had users or not (there are no explicit in-kernel
references to it), but given that the hardcoded nonce made it wildly
insecure unless a unique key was used for each message, let's try
removing it and see if anyone complains.

Leave the new "vmac64" template that requires the nonce to be explicitly
specified as the first 16 bytes of data and uses the correct endianness
for the digest.

Signed-off-by: Eric Biggers 
Signed-off-by: Herbert Xu

crypto: vmac - add nonced version with big endian digest

2018-07-01T13:00:43+00:00

Currently the VMAC template uses a "nonce" hardcoded to 0, which makes
it insecure unless a unique key is set for every message.  Also, the
endianness of the final digest is wrong: the implementation uses little
endian, but the VMAC specification has it as big endian, as do other
VMAC implementations such as the one in Crypto++.

Add a new VMAC template where the nonce is passed as the first 16 bytes
of data (similar to what is done for Poly1305's nonce), and the digest
is big endian.  Call it "vmac64", since the old name of simply "vmac"
didn't clarify whether the implementation is of VMAC-64 or of VMAC-128
(which produce 64-bit and 128-bit digests respectively); so we fix the
naming ambiguity too.

Signed-off-by: Eric Biggers 
Signed-off-by: Herbert Xu

crypto: testmgr - eliminate redundant decryption test vectors

2018-05-30T16:13:39+00:00

Currently testmgr has separate encryption and decryption test vectors
for symmetric ciphers.  That's massively redundant, since with few
exceptions (mostly mistakes, apparently), all decryption tests are
identical to the encryption tests, just with the input/result flipped.

Therefore, eliminate the redundancy by removing the decryption test
vectors and updating testmgr to test both encryption and decryption
using what used to be the encryption test vectors.  Naming is adjusted
accordingly: each cipher_testvec now has a 'ptext' (plaintext), 'ctext'
(ciphertext), and 'len' instead of an 'input', 'result', 'ilen', and
'rlen'.  Note that it was always the case that 'ilen == rlen'.

AES keywrap ("kw(aes)") is special because its IV is generated by the
encryption.  Previously this was handled by specifying 'iv_out' for
encryption and 'iv' for decryption.  To make it work cleanly with only
one set of test vectors, put the IV in 'iv', remove 'iv_out', and add a
boolean that indicates that the IV is generated by the encryption.

In total, this removes over 10000 lines from testmgr.h, with no
reduction in test coverage since prior patches already copied the few
unique decryption test vectors into the encryption test vectors.

This covers all algorithms that used 'struct cipher_testvec', e.g. any
block cipher in the ECB, CBC, CTR, XTS, LRW, CTS-CBC, PCBC, OFB, or
keywrap modes, and Salsa20 and ChaCha20.  No change is made to AEAD
tests, though we probably can eliminate a similar redundancy there too.

The testmgr.h portion of this patch was automatically generated using
the following awk script, with some slight manual fixups on top (updated
'struct cipher_testvec' definition, updated a few comments, and fixed up
the AES keywrap test vectors):

    BEGIN { OTHER = 0; ENCVEC = 1; DECVEC = 2; DECVEC_TAIL = 3; mode = OTHER }

    /^static const struct cipher_testvec.*_enc_/ { sub("_enc", ""); mode = ENCVEC }
    /^static const struct cipher_testvec.*_dec_/ { mode = DECVEC }
    mode == ENCVEC && !/\.ilen[[:space:]]*=/ {
    	sub(/\.input[[:space:]]*=$/,    ".ptext =")
    	sub(/\.input[[:space:]]*=/,     ".ptext\t=")
    	sub(/\.result[[:space:]]*=$/,   ".ctext =")
    	sub(/\.result[[:space:]]*=/,    ".ctext\t=")
    	sub(/\.rlen[[:space:]]*=/,      ".len\t=")
    	print
    }
    mode == DECVEC_TAIL && /[^[:space:]]/ { mode = OTHER }
    mode == OTHER                         { print }
    mode == ENCVEC && /^};/               { mode = OTHER }
    mode == DECVEC && /^};/               { mode = DECVEC_TAIL }

Note that git's default diff algorithm gets confused by the testmgr.h
portion of this patch, and reports too many lines added and removed.
It's better viewed with 'git diff --minimal' (or 'git show --minimal'),
which reports "2 files changed, 919 insertions(+), 11723 deletions(-)".

Signed-off-by: Eric Biggers 
Signed-off-by: Herbert Xu

crypto: testmgr - add extra kw(aes) encryption test vector

2018-05-30T16:13:38+00:00

One "kw(aes)" decryption test vector doesn't exactly match an encryption
test vector with input and result swapped.  In preparation for removing
the decryption test vectors, add this test vector to the encryption test
vectors, so we don't lose any test coverage.

Signed-off-by: Eric Biggers 
Signed-off-by: Herbert Xu