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[CRYPTO] ctr: Refactor into ctr and rfc3686

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As discussed previously, this patch moves the basic CTR functionality
into a chainable algorithm called ctr.  The IPsec-specific variant of
it is now placed on top with the name rfc3686.

So ctr(aes) gives a chainable cipher with IV size 16 while the IPsec
variant will be called rfc3686(ctr(aes)).  This patch also adjusts
gcm accordingly.

Signed-off-by: Herbert Xu <[email protected]>
This commit is contained in:
Herbert Xu 2007-12-17 21:34:32 +08:00
commit 5311f248b7
4 changed files with 233 additions and 136 deletions
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8
crypto/tcrypt.c
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@ -1193,9 +1193,9 @@ static void do_test(void)
AES_XTS_ENC_TEST_VECTORS);
test_cipher("xts(aes)", DECRYPT, aes_xts_dec_tv_template,
AES_XTS_DEC_TEST_VECTORS);
test_cipher("ctr(aes,4,8,4)", ENCRYPT, aes_ctr_enc_tv_template,
test_cipher("rfc3686(ctr(aes))", ENCRYPT, aes_ctr_enc_tv_template,
AES_CTR_ENC_TEST_VECTORS);
test_cipher("ctr(aes,4,8,4)", DECRYPT, aes_ctr_dec_tv_template,
test_cipher("rfc3686(ctr(aes))", DECRYPT, aes_ctr_dec_tv_template,
AES_CTR_DEC_TEST_VECTORS);
test_aead("gcm(aes)", ENCRYPT, aes_gcm_enc_tv_template,
AES_GCM_ENC_TEST_VECTORS);
@ -1394,9 +1394,9 @@ static void do_test(void)
AES_XTS_ENC_TEST_VECTORS);
test_cipher("xts(aes)", DECRYPT, aes_xts_dec_tv_template,
AES_XTS_DEC_TEST_VECTORS);
test_cipher("ctr(aes,4,8,4)", ENCRYPT, aes_ctr_enc_tv_template,
test_cipher("rfc3686(ctr(aes))", ENCRYPT, aes_ctr_enc_tv_template,
AES_CTR_ENC_TEST_VECTORS);
test_cipher("ctr(aes,4,8,4)", DECRYPT, aes_ctr_dec_tv_template,
test_cipher("rfc3686(ctr(aes))", DECRYPT, aes_ctr_dec_tv_template,
AES_CTR_DEC_TEST_VECTORS);
break;