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crypto: x86/sm4 - Remove cfb(sm4)
Remove the unused CFB implementation. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu
parent
29fa12e918
commit
05bd1e2a78
@ -189,7 +189,7 @@ config CRYPTO_SERPENT_AVX2_X86_64
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Processes 16 blocks in parallel.
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config CRYPTO_SM4_AESNI_AVX_X86_64
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tristate "Ciphers: SM4 with modes: ECB, CBC, CFB, CTR (AES-NI/AVX)"
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tristate "Ciphers: SM4 with modes: ECB, CBC, CTR (AES-NI/AVX)"
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depends on X86 && 64BIT
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select CRYPTO_SKCIPHER
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select CRYPTO_SIMD
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@ -197,7 +197,7 @@ config CRYPTO_SM4_AESNI_AVX_X86_64
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select CRYPTO_SM4
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help
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Length-preserving ciphers: SM4 cipher algorithms
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(OSCCA GB/T 32907-2016) with ECB, CBC, CFB, and CTR modes
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(OSCCA GB/T 32907-2016) with ECB, CBC, and CTR modes
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Architecture: x86_64 using:
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- AES-NI (AES New Instructions)
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@ -210,7 +210,7 @@ config CRYPTO_SM4_AESNI_AVX_X86_64
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If unsure, say N.
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config CRYPTO_SM4_AESNI_AVX2_X86_64
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tristate "Ciphers: SM4 with modes: ECB, CBC, CFB, CTR (AES-NI/AVX2)"
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tristate "Ciphers: SM4 with modes: ECB, CBC, CTR (AES-NI/AVX2)"
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depends on X86 && 64BIT
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select CRYPTO_SKCIPHER
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select CRYPTO_SIMD
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@ -219,7 +219,7 @@ config CRYPTO_SM4_AESNI_AVX2_X86_64
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select CRYPTO_SM4_AESNI_AVX_X86_64
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help
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Length-preserving ciphers: SM4 cipher algorithms
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(OSCCA GB/T 32907-2016) with ECB, CBC, CFB, and CTR modes
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(OSCCA GB/T 32907-2016) with ECB, CBC, and CTR modes
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Architecture: x86_64 using:
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- AES-NI (AES New Instructions)
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@ -534,55 +534,3 @@ SYM_TYPED_FUNC_START(sm4_aesni_avx_cbc_dec_blk8)
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FRAME_END
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RET;
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SYM_FUNC_END(sm4_aesni_avx_cbc_dec_blk8)
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/*
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* void sm4_aesni_avx_cfb_dec_blk8(const u32 *rk, u8 *dst,
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* const u8 *src, u8 *iv)
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*/
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SYM_TYPED_FUNC_START(sm4_aesni_avx_cfb_dec_blk8)
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/* input:
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* %rdi: round key array, CTX
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* %rsi: dst (8 blocks)
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* %rdx: src (8 blocks)
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* %rcx: iv
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*/
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FRAME_BEGIN
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/* Load input */
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vmovdqu (%rcx), RA0;
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vmovdqu 0 * 16(%rdx), RA1;
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vmovdqu 1 * 16(%rdx), RA2;
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vmovdqu 2 * 16(%rdx), RA3;
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vmovdqu 3 * 16(%rdx), RB0;
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vmovdqu 4 * 16(%rdx), RB1;
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vmovdqu 5 * 16(%rdx), RB2;
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vmovdqu 6 * 16(%rdx), RB3;
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/* Update IV */
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vmovdqu 7 * 16(%rdx), RNOT;
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vmovdqu RNOT, (%rcx);
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call __sm4_crypt_blk8;
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vpxor (0 * 16)(%rdx), RA0, RA0;
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vpxor (1 * 16)(%rdx), RA1, RA1;
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vpxor (2 * 16)(%rdx), RA2, RA2;
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vpxor (3 * 16)(%rdx), RA3, RA3;
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vpxor (4 * 16)(%rdx), RB0, RB0;
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vpxor (5 * 16)(%rdx), RB1, RB1;
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vpxor (6 * 16)(%rdx), RB2, RB2;
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vpxor (7 * 16)(%rdx), RB3, RB3;
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vmovdqu RA0, (0 * 16)(%rsi);
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vmovdqu RA1, (1 * 16)(%rsi);
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vmovdqu RA2, (2 * 16)(%rsi);
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vmovdqu RA3, (3 * 16)(%rsi);
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vmovdqu RB0, (4 * 16)(%rsi);
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vmovdqu RB1, (5 * 16)(%rsi);
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vmovdqu RB2, (6 * 16)(%rsi);
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vmovdqu RB3, (7 * 16)(%rsi);
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vzeroall;
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FRAME_END
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RET;
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SYM_FUNC_END(sm4_aesni_avx_cfb_dec_blk8)
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@ -439,58 +439,3 @@ SYM_TYPED_FUNC_START(sm4_aesni_avx2_cbc_dec_blk16)
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FRAME_END
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RET;
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SYM_FUNC_END(sm4_aesni_avx2_cbc_dec_blk16)
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/*
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* void sm4_aesni_avx2_cfb_dec_blk16(const u32 *rk, u8 *dst,
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* const u8 *src, u8 *iv)
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*/
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SYM_TYPED_FUNC_START(sm4_aesni_avx2_cfb_dec_blk16)
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/* input:
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* %rdi: round key array, CTX
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* %rsi: dst (16 blocks)
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* %rdx: src (16 blocks)
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* %rcx: iv
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*/
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FRAME_BEGIN
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vzeroupper;
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/* Load input */
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vmovdqu (%rcx), RNOTx;
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vinserti128 $1, (%rdx), RNOT, RA0;
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vmovdqu (0 * 32 + 16)(%rdx), RA1;
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vmovdqu (1 * 32 + 16)(%rdx), RA2;
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vmovdqu (2 * 32 + 16)(%rdx), RA3;
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vmovdqu (3 * 32 + 16)(%rdx), RB0;
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vmovdqu (4 * 32 + 16)(%rdx), RB1;
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vmovdqu (5 * 32 + 16)(%rdx), RB2;
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vmovdqu (6 * 32 + 16)(%rdx), RB3;
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/* Update IV */
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vmovdqu (7 * 32 + 16)(%rdx), RNOTx;
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vmovdqu RNOTx, (%rcx);
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call __sm4_crypt_blk16;
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vpxor (0 * 32)(%rdx), RA0, RA0;
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vpxor (1 * 32)(%rdx), RA1, RA1;
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vpxor (2 * 32)(%rdx), RA2, RA2;
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vpxor (3 * 32)(%rdx), RA3, RA3;
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vpxor (4 * 32)(%rdx), RB0, RB0;
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vpxor (5 * 32)(%rdx), RB1, RB1;
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vpxor (6 * 32)(%rdx), RB2, RB2;
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vpxor (7 * 32)(%rdx), RB3, RB3;
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vmovdqu RA0, (0 * 32)(%rsi);
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vmovdqu RA1, (1 * 32)(%rsi);
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vmovdqu RA2, (2 * 32)(%rsi);
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vmovdqu RA3, (3 * 32)(%rsi);
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vmovdqu RB0, (4 * 32)(%rsi);
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vmovdqu RB1, (5 * 32)(%rsi);
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vmovdqu RB2, (6 * 32)(%rsi);
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vmovdqu RB3, (7 * 32)(%rsi);
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vzeroall;
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FRAME_END
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RET;
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SYM_FUNC_END(sm4_aesni_avx2_cfb_dec_blk16)
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@ -14,10 +14,6 @@ int sm4_cbc_encrypt(struct skcipher_request *req);
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int sm4_avx_cbc_decrypt(struct skcipher_request *req,
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unsigned int bsize, sm4_crypt_func func);
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int sm4_cfb_encrypt(struct skcipher_request *req);
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int sm4_avx_cfb_decrypt(struct skcipher_request *req,
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unsigned int bsize, sm4_crypt_func func);
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int sm4_avx_ctr_crypt(struct skcipher_request *req,
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unsigned int bsize, sm4_crypt_func func);
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@ -23,8 +23,6 @@ asmlinkage void sm4_aesni_avx2_ctr_enc_blk16(const u32 *rk, u8 *dst,
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const u8 *src, u8 *iv);
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asmlinkage void sm4_aesni_avx2_cbc_dec_blk16(const u32 *rk, u8 *dst,
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const u8 *src, u8 *iv);
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asmlinkage void sm4_aesni_avx2_cfb_dec_blk16(const u32 *rk, u8 *dst,
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const u8 *src, u8 *iv);
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static int sm4_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
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unsigned int key_len)
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@ -41,12 +39,6 @@ static int cbc_decrypt(struct skcipher_request *req)
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}
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static int cfb_decrypt(struct skcipher_request *req)
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{
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return sm4_avx_cfb_decrypt(req, SM4_CRYPT16_BLOCK_SIZE,
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sm4_aesni_avx2_cfb_dec_blk16);
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}
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static int ctr_crypt(struct skcipher_request *req)
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{
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return sm4_avx_ctr_crypt(req, SM4_CRYPT16_BLOCK_SIZE,
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@ -87,24 +79,6 @@ static struct skcipher_alg sm4_aesni_avx2_skciphers[] = {
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.setkey = sm4_skcipher_setkey,
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.encrypt = sm4_cbc_encrypt,
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.decrypt = cbc_decrypt,
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}, {
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.base = {
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.cra_name = "__cfb(sm4)",
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.cra_driver_name = "__cfb-sm4-aesni-avx2",
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.cra_priority = 500,
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.cra_flags = CRYPTO_ALG_INTERNAL,
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.cra_blocksize = 1,
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.cra_ctxsize = sizeof(struct sm4_ctx),
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.cra_module = THIS_MODULE,
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},
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.min_keysize = SM4_KEY_SIZE,
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.max_keysize = SM4_KEY_SIZE,
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.ivsize = SM4_BLOCK_SIZE,
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.chunksize = SM4_BLOCK_SIZE,
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.walksize = 16 * SM4_BLOCK_SIZE,
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.setkey = sm4_skcipher_setkey,
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.encrypt = sm4_cfb_encrypt,
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.decrypt = cfb_decrypt,
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}, {
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.base = {
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.cra_name = "__ctr(sm4)",
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@ -27,8 +27,6 @@ asmlinkage void sm4_aesni_avx_ctr_enc_blk8(const u32 *rk, u8 *dst,
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const u8 *src, u8 *iv);
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asmlinkage void sm4_aesni_avx_cbc_dec_blk8(const u32 *rk, u8 *dst,
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const u8 *src, u8 *iv);
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asmlinkage void sm4_aesni_avx_cfb_dec_blk8(const u32 *rk, u8 *dst,
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const u8 *src, u8 *iv);
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static int sm4_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
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unsigned int key_len)
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@ -188,116 +186,6 @@ static int cbc_decrypt(struct skcipher_request *req)
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sm4_aesni_avx_cbc_dec_blk8);
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}
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int sm4_cfb_encrypt(struct skcipher_request *req)
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{
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
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struct sm4_ctx *ctx = crypto_skcipher_ctx(tfm);
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struct skcipher_walk walk;
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unsigned int nbytes;
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int err;
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err = skcipher_walk_virt(&walk, req, false);
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while ((nbytes = walk.nbytes) > 0) {
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u8 keystream[SM4_BLOCK_SIZE];
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const u8 *iv = walk.iv;
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const u8 *src = walk.src.virt.addr;
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u8 *dst = walk.dst.virt.addr;
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while (nbytes >= SM4_BLOCK_SIZE) {
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sm4_crypt_block(ctx->rkey_enc, keystream, iv);
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crypto_xor_cpy(dst, src, keystream, SM4_BLOCK_SIZE);
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iv = dst;
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src += SM4_BLOCK_SIZE;
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dst += SM4_BLOCK_SIZE;
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nbytes -= SM4_BLOCK_SIZE;
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}
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if (iv != walk.iv)
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memcpy(walk.iv, iv, SM4_BLOCK_SIZE);
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/* tail */
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if (walk.nbytes == walk.total && nbytes > 0) {
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sm4_crypt_block(ctx->rkey_enc, keystream, walk.iv);
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crypto_xor_cpy(dst, src, keystream, nbytes);
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nbytes = 0;
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}
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err = skcipher_walk_done(&walk, nbytes);
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}
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return err;
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}
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EXPORT_SYMBOL_GPL(sm4_cfb_encrypt);
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int sm4_avx_cfb_decrypt(struct skcipher_request *req,
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unsigned int bsize, sm4_crypt_func func)
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{
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struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
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struct sm4_ctx *ctx = crypto_skcipher_ctx(tfm);
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struct skcipher_walk walk;
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unsigned int nbytes;
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int err;
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err = skcipher_walk_virt(&walk, req, false);
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while ((nbytes = walk.nbytes) > 0) {
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const u8 *src = walk.src.virt.addr;
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u8 *dst = walk.dst.virt.addr;
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kernel_fpu_begin();
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while (nbytes >= bsize) {
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func(ctx->rkey_enc, dst, src, walk.iv);
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dst += bsize;
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src += bsize;
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nbytes -= bsize;
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}
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while (nbytes >= SM4_BLOCK_SIZE) {
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u8 keystream[SM4_BLOCK_SIZE * 8];
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unsigned int nblocks = min(nbytes >> 4, 8u);
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memcpy(keystream, walk.iv, SM4_BLOCK_SIZE);
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if (nblocks > 1)
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memcpy(&keystream[SM4_BLOCK_SIZE], src,
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(nblocks - 1) * SM4_BLOCK_SIZE);
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memcpy(walk.iv, src + (nblocks - 1) * SM4_BLOCK_SIZE,
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SM4_BLOCK_SIZE);
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sm4_aesni_avx_crypt8(ctx->rkey_enc, keystream,
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keystream, nblocks);
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crypto_xor_cpy(dst, src, keystream,
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nblocks * SM4_BLOCK_SIZE);
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dst += nblocks * SM4_BLOCK_SIZE;
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src += nblocks * SM4_BLOCK_SIZE;
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nbytes -= nblocks * SM4_BLOCK_SIZE;
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}
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kernel_fpu_end();
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/* tail */
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if (walk.nbytes == walk.total && nbytes > 0) {
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u8 keystream[SM4_BLOCK_SIZE];
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sm4_crypt_block(ctx->rkey_enc, keystream, walk.iv);
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crypto_xor_cpy(dst, src, keystream, nbytes);
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nbytes = 0;
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}
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err = skcipher_walk_done(&walk, nbytes);
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}
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return err;
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}
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EXPORT_SYMBOL_GPL(sm4_avx_cfb_decrypt);
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static int cfb_decrypt(struct skcipher_request *req)
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{
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return sm4_avx_cfb_decrypt(req, SM4_CRYPT8_BLOCK_SIZE,
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sm4_aesni_avx_cfb_dec_blk8);
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}
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int sm4_avx_ctr_crypt(struct skcipher_request *req,
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unsigned int bsize, sm4_crypt_func func)
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{
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@ -406,24 +294,6 @@ static struct skcipher_alg sm4_aesni_avx_skciphers[] = {
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.setkey = sm4_skcipher_setkey,
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.encrypt = sm4_cbc_encrypt,
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.decrypt = cbc_decrypt,
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}, {
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.base = {
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.cra_name = "__cfb(sm4)",
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.cra_driver_name = "__cfb-sm4-aesni-avx",
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.cra_priority = 400,
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.cra_flags = CRYPTO_ALG_INTERNAL,
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.cra_blocksize = 1,
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.cra_ctxsize = sizeof(struct sm4_ctx),
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.cra_module = THIS_MODULE,
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},
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.min_keysize = SM4_KEY_SIZE,
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.max_keysize = SM4_KEY_SIZE,
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.ivsize = SM4_BLOCK_SIZE,
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.chunksize = SM4_BLOCK_SIZE,
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.walksize = 8 * SM4_BLOCK_SIZE,
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.setkey = sm4_skcipher_setkey,
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.encrypt = sm4_cfb_encrypt,
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.decrypt = cfb_decrypt,
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}, {
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.base = {
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.cra_name = "__ctr(sm4)",
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