diff options
Diffstat (limited to 'arch/sparc/crypto')
| -rw-r--r-- | arch/sparc/crypto/aes_asm.S | 95 | ||||
| -rw-r--r-- | arch/sparc/crypto/aes_glue.c | 62 |
2 files changed, 157 insertions, 0 deletions
diff --git a/arch/sparc/crypto/aes_asm.S b/arch/sparc/crypto/aes_asm.S index 50faae03c592..7a975d689919 100644 --- a/arch/sparc/crypto/aes_asm.S +++ b/arch/sparc/crypto/aes_asm.S @@ -44,6 +44,8 @@ .word 0x85b02307; #define MOVXTOD_O0_F0 \ .word 0x81b02308; +#define MOVXTOD_O5_F0 \ + .word 0x81b0230d; #define MOVXTOD_O5_F2 \ .word 0x85b0230d; @@ -1137,3 +1139,96 @@ ENTRY(aes_sparc64_cbc_decrypt_256) retl nop ENDPROC(aes_sparc64_cbc_decrypt_256) + + .align 32 +ENTRY(aes_sparc64_ctr_crypt_128) + /* %o0=key, %o1=input, %o2=output, %o3=len, %o4=IV */ + ldx [%o4 + 0x00], %g3 + ldx [%o4 + 0x08], %g7 + ldx [%o0 + 0x00], %g1 + ldx [%o0 + 0x08], %g2 +1: xor %g1, %g3, %o5 + MOVXTOD_O5_F0 + xor %g2, %g7, %o5 + MOVXTOD_O5_F2 + add %g7, 1, %g7 + add %g3, 1, %o5 + movrz %g7, %o5, %g3 + ENCRYPT_128(8, 0, 2, 4, 6) + ldd [%o1 + 0x00], %f4 + ldd [%o1 + 0x08], %f6 + fxor %f4, %f0, %f4 + fxor %f6, %f2, %f6 + std %f4, [%o2 + 0x00] + std %f6, [%o2 + 0x08] + subcc %o3, 0x10, %o3 + add %o1, 0x10, %o1 + bne,pt %xcc, 1b + add %o2, 0x10, %o2 + stx %g3, [%o4 + 0x00] + stx %g7, [%o4 + 0x08] + retl + nop +ENDPROC(aes_sparc64_ctr_crypt_128) + + .align 32 +ENTRY(aes_sparc64_ctr_crypt_192) + /* %o0=key, %o1=input, %o2=output, %o3=len, %o4=IV */ + ldx [%o4 + 0x00], %g3 + ldx [%o4 + 0x08], %g7 + ldx [%o0 + 0x00], %g1 + ldx [%o0 + 0x08], %g2 +1: xor %g1, %g3, %o5 + MOVXTOD_O5_F0 + xor %g2, %g7, %o5 + MOVXTOD_O5_F2 + add %g7, 1, %g7 + add %g3, 1, %o5 + movrz %g7, %o5, %g3 + ENCRYPT_192(8, 0, 2, 4, 6) + ldd [%o1 + 0x00], %f4 + ldd [%o1 + 0x08], %f6 + fxor %f4, %f0, %f4 + fxor %f6, %f2, %f6 + std %f4, [%o2 + 0x00] + std %f6, [%o2 + 0x08] + subcc %o3, 0x10, %o3 + add %o1, 0x10, %o1 + bne,pt %xcc, 1b + add %o2, 0x10, %o2 + stx %g3, [%o4 + 0x00] + stx %g7, [%o4 + 0x08] + retl + nop +ENDPROC(aes_sparc64_ctr_crypt_192) + + .align 32 +ENTRY(aes_sparc64_ctr_crypt_256) + /* %o0=key, %o1=input, %o2=output, %o3=len, %o4=IV */ + ldx [%o4 + 0x00], %g3 + ldx [%o4 + 0x08], %g7 + ldx [%o0 + 0x00], %g1 + ldx [%o0 + 0x08], %g2 +1: xor %g1, %g3, %o5 + MOVXTOD_O5_F0 + xor %g2, %g7, %o5 + MOVXTOD_O5_F2 + add %g7, 1, %g7 + add %g3, 1, %o5 + movrz %g7, %o5, %g3 + ENCRYPT_256(8, 0, 2, 4, 6) + ldd [%o1 + 0x00], %f4 + ldd [%o1 + 0x08], %f6 + fxor %f4, %f0, %f4 + fxor %f6, %f2, %f6 + std %f4, [%o2 + 0x00] + std %f6, [%o2 + 0x08] + subcc %o3, 0x10, %o3 + add %o1, 0x10, %o1 + bne,pt %xcc, 1b + add %o2, 0x10, %o2 + stx %g3, [%o4 + 0x00] + stx %g7, [%o4 + 0x08] + retl + nop +ENDPROC(aes_sparc64_ctr_crypt_256) diff --git a/arch/sparc/crypto/aes_glue.c b/arch/sparc/crypto/aes_glue.c index 0b1de0b470a2..f457fc69edeb 100644 --- a/arch/sparc/crypto/aes_glue.c +++ b/arch/sparc/crypto/aes_glue.c @@ -39,6 +39,8 @@ struct aes_ops { unsigned int len, u64 *iv); void (*cbc_decrypt)(const u64 *key, const u64 *input, u64 *output, unsigned int len, u64 *iv); + void (*ctr_crypt)(const u64 *key, const u64 *input, u64 *output, + unsigned int len, u64 *iv); }; struct crypto_sparc64_aes_ctx { @@ -108,6 +110,16 @@ extern void aes_sparc64_cbc_decrypt_256(const u64 *key, const u64 *input, u64 *output, unsigned int len, u64 *iv); +extern void aes_sparc64_ctr_crypt_128(const u64 *key, const u64 *input, + u64 *output, unsigned int len, + u64 *iv); +extern void aes_sparc64_ctr_crypt_192(const u64 *key, const u64 *input, + u64 *output, unsigned int len, + u64 *iv); +extern void aes_sparc64_ctr_crypt_256(const u64 *key, const u64 *input, + u64 *output, unsigned int len, + u64 *iv); + struct aes_ops aes128_ops = { .encrypt = aes_sparc64_encrypt_128, .decrypt = aes_sparc64_decrypt_128, @@ -117,6 +129,7 @@ struct aes_ops aes128_ops = { .ecb_decrypt = aes_sparc64_ecb_decrypt_128, .cbc_encrypt = aes_sparc64_cbc_encrypt_128, .cbc_decrypt = aes_sparc64_cbc_decrypt_128, + .ctr_crypt = aes_sparc64_ctr_crypt_128, }; struct aes_ops aes192_ops = { @@ -128,6 +141,7 @@ struct aes_ops aes192_ops = { .ecb_decrypt = aes_sparc64_ecb_decrypt_192, .cbc_encrypt = aes_sparc64_cbc_encrypt_192, .cbc_decrypt = aes_sparc64_cbc_decrypt_192, + .ctr_crypt = aes_sparc64_ctr_crypt_192, }; struct aes_ops aes256_ops = { @@ -139,6 +153,7 @@ struct aes_ops aes256_ops = { .ecb_decrypt = aes_sparc64_ecb_decrypt_256, .cbc_encrypt = aes_sparc64_cbc_encrypt_256, .cbc_decrypt = aes_sparc64_cbc_decrypt_256, + .ctr_crypt = aes_sparc64_ctr_crypt_256, }; extern void aes_sparc64_key_expand(const u32 *in_key, u64 *output_key, @@ -310,6 +325,34 @@ static int cbc_decrypt(struct blkcipher_desc *desc, return err; } +static int ctr_crypt(struct blkcipher_desc *desc, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) +{ + struct crypto_sparc64_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + struct blkcipher_walk walk; + int err; + + blkcipher_walk_init(&walk, dst, src, nbytes); + err = blkcipher_walk_virt(desc, &walk); + + ctx->ops->load_encrypt_keys(&ctx->key[0]); + while ((nbytes = walk.nbytes)) { + unsigned int block_len = nbytes & AES_BLOCK_MASK; + + if (likely(block_len)) { + ctx->ops->ctr_crypt(&ctx->key[0], + (const u64 *)walk.src.virt.addr, + (u64 *) walk.dst.virt.addr, + block_len, (u64 *) walk.iv); + } + nbytes &= AES_BLOCK_SIZE - 1; + err = blkcipher_walk_done(desc, &walk, nbytes); + } + fprs_write(0); + return err; +} + static struct crypto_alg algs[] = { { .cra_name = "aes", .cra_driver_name = "aes-sparc64", @@ -366,6 +409,25 @@ static struct crypto_alg algs[] = { { .decrypt = cbc_decrypt, }, }, +}, { + .cra_name = "ctr(aes)", + .cra_driver_name = "ctr-aes-sparc64", + .cra_priority = 150, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct crypto_sparc64_aes_ctx), + .cra_alignmask = 7, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_u = { + .blkcipher = { + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .setkey = aes_set_key, + .encrypt = ctr_crypt, + .decrypt = ctr_crypt, + }, + }, } }; static bool __init sparc64_has_aes_opcode(void) |