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author | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2020-03-03 08:17:40 +0100 |
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committer | David Monniaux <david.monniaux@univ-grenoble-alpes.fr> | 2020-03-03 08:17:40 +0100 |
commit | 1ab7b51c30e1b10ac45b0bd64cefdc01da0f7f68 (patch) | |
tree | 210ffc156c83f04fb0c61a40b4f9037d7ba8a7e1 /test/monniaux/BearSSL/src/symcipher/aes_ct_cbcenc.c | |
parent | 222c9047d61961db9c6b19fed5ca49829223fd33 (diff) | |
parent | 12be46d59a2483a10d77fa8ee67f7e0ca1bd702f (diff) | |
download | compcert-kvx-1ab7b51c30e1b10ac45b0bd64cefdc01da0f7f68.tar.gz compcert-kvx-1ab7b51c30e1b10ac45b0bd64cefdc01da0f7f68.zip |
Merge branch 'mppa-cse2' of gricad-gitlab.univ-grenoble-alpes.fr:sixcy/CompCert into mppa-work
Diffstat (limited to 'test/monniaux/BearSSL/src/symcipher/aes_ct_cbcenc.c')
-rw-r--r-- | test/monniaux/BearSSL/src/symcipher/aes_ct_cbcenc.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/test/monniaux/BearSSL/src/symcipher/aes_ct_cbcenc.c b/test/monniaux/BearSSL/src/symcipher/aes_ct_cbcenc.c new file mode 100644 index 00000000..cb85977b --- /dev/null +++ b/test/monniaux/BearSSL/src/symcipher/aes_ct_cbcenc.c @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org> + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include "inner.h" + +/* see bearssl_block.h */ +void +br_aes_ct_cbcenc_init(br_aes_ct_cbcenc_keys *ctx, + const void *key, size_t len) +{ + ctx->vtable = &br_aes_ct_cbcenc_vtable; + ctx->num_rounds = br_aes_ct_keysched(ctx->skey, key, len); +} + +/* see bearssl_block.h */ +void +br_aes_ct_cbcenc_run(const br_aes_ct_cbcenc_keys *ctx, + void *iv, void *data, size_t len) +{ + unsigned char *buf, *ivbuf; + uint32_t q[8]; + uint32_t iv0, iv1, iv2, iv3; + uint32_t sk_exp[120]; + + q[1] = 0; + q[3] = 0; + q[5] = 0; + q[7] = 0; + br_aes_ct_skey_expand(sk_exp, ctx->num_rounds, ctx->skey); + ivbuf = iv; + iv0 = br_dec32le(ivbuf); + iv1 = br_dec32le(ivbuf + 4); + iv2 = br_dec32le(ivbuf + 8); + iv3 = br_dec32le(ivbuf + 12); + buf = data; + while (len > 0) { + q[0] = iv0 ^ br_dec32le(buf); + q[2] = iv1 ^ br_dec32le(buf + 4); + q[4] = iv2 ^ br_dec32le(buf + 8); + q[6] = iv3 ^ br_dec32le(buf + 12); + br_aes_ct_ortho(q); + br_aes_ct_bitslice_encrypt(ctx->num_rounds, sk_exp, q); + br_aes_ct_ortho(q); + iv0 = q[0]; + iv1 = q[2]; + iv2 = q[4]; + iv3 = q[6]; + br_enc32le(buf, iv0); + br_enc32le(buf + 4, iv1); + br_enc32le(buf + 8, iv2); + br_enc32le(buf + 12, iv3); + buf += 16; + len -= 16; + } + br_enc32le(ivbuf, iv0); + br_enc32le(ivbuf + 4, iv1); + br_enc32le(ivbuf + 8, iv2); + br_enc32le(ivbuf + 12, iv3); +} + +/* see bearssl_block.h */ +const br_block_cbcenc_class br_aes_ct_cbcenc_vtable = { + sizeof(br_aes_ct_cbcenc_keys), + 16, + 4, + (void (*)(const br_block_cbcenc_class **, const void *, size_t)) + &br_aes_ct_cbcenc_init, + (void (*)(const br_block_cbcenc_class *const *, void *, void *, size_t)) + &br_aes_ct_cbcenc_run +}; |